Supply NOV Continental EMSCO D125 D225 D375 D550 DB550 DA700 D750 DA850 D1350 DC1650 Duplex Mud Pump Parts List Manual 2026

PISTON; ASSEMBLY; 012180394; 6 IN; PART FOR : MUD PUMP TRIPLEX OMEGA MODEL : D-750; (REPLACED PN.274-600000-2163)

EMSCO D-125 DUPLEX MUD PUMP

MISCELLANEOUS ITEMS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Gear Case Cover 1 500407-D
2 Cover Gasket, 3/8″ x 1″ Neopr. Sponge 1 7602-059011
3 Oil Level Indicator 2 6397-0182-00
4A Inspection Door, C-E, see p.P-31-1 1 7510-0201-00
or Inspection Door, Mid-Co., see p.P-31-1 1 7510-0208-00
5 Inspection Door Gasket 1 7502-0103-00
6 Hold-Down Bolt 4 7501-2610-00
7 Hold-Down Bolt 4 7501-2621-00
8 Breather Cap 1 6397-0186-00
9 Breather Cap Stud 1 7507-0200-00
10A Shear Relief Valve, See p.P-31-13 1 6923-0008-00
11 Rod Lubricator Tank 1 —
12 Rod Lubricator Tank Cover, N.S. 1 7510-0006-00
13 Rod Lubricator Tank Cover, F.S. 1 7510-0005-00
14 Cover Gasket 2 7502-0131-00
15 Main Bearing Bolt Wrench 1 3/4″ Allen Key-LS
16 Valve Pot Cover Bar 1 6397-0719-00
17 Proto X-Hvy Duty Socket 1 7602-301016
18 Proto Socket – Stuffing Box # 5548 1 —
19 Proto Sliding Bar, 5685 1 7602-301013
20 Proto 8″ Extension, 5661 1 7602-301014
21 H.P. Steel, Pipe Plug, 2″ 1 7601-259073
22 Hex Hd Cap Screw, 1/2″ x 1-1/4″ 4 7601-033050
23 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 4 7601-033051
25 Plpe Bushing, 3″ x 2″ 1 —
26 Lock Washer, 1/2″ 8 7601-132016
27 Galv Nipple, 1/2″ x —— 2 7601-258137 6-1/2″
FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. “PART NO.
API 6 VLV POT”
1 Fluid End 1 6397-0610-00
2 Fluid End Stud 16 7507-3404-00
3 Fluid End Stud 8 7507-1900-00
4 Fluid End Stud 20 7507-3405-00
5 Suction Flange Stud 12 7507-2003-00
6 Discharge Flange Stud 8 7507-1901-00
7A Air Chamber Assembly 1 6397-0073-00
8 Air Chamber Body 1 6397-0787-00
9 Strainer 1 6397-0129-00
10 Strainer Cap 1 6397-0665-00
11 Gasket 1 6397-0101-01
12 Stud 16 7507-1902-00
13 Discharge Flange 1 6397-0074-00
14 Gasket 1 6397-0001-01
15 Cylinder Head 2 6397-0599-00
16 Cylinder Liner Cage 2 6397-0597-00
17 Liner Seal 6 6397-0649-00
18 Valve Pot Cover 8 6397-0598-00
19 Valve Pot Cover Gasket 8 6397-0607-00
20 Valve Guide 8 6397-0602-00
21 Valve Bumper 8 6397-0148-00
22 Valve Guide Retainer 8 6397-0603-00
23 Valve Guide Retainer Bolt 32 7501-0051-00
24 Valve Spring 8 6397-0579-00
25 Suction Flange 1 6397-0233-00
26 Suction Flange Gasket, ARP 568-447 1 7602-160057
27 Shim Set 2 6397-0716-00
28 Hex Head Cap Screw 4 3/4″ x 3″
7601-033100
29 Hex Nut 4 3/4″
7601-061014
30 Hex Nut 16 7/8″
7601-061016
31 Hex Nut 8 7/8″ – 9 Hvy
7601-063023
32 Hex Nut, 1″ – 8 Hvy 12 7601-063020
33 Hex Nut, 1-1/8″ – 8 Hvy 36 7601-063026
34 Hex Nut 8 7/8″ – 9 Hvy
7601-063023
35 Lock Washer 4 3/4“
7601-132018
36 Teylor Blind Flange 4″ – 900 # 1 —
37 Air Chamber to Fluid End Gasket 1 6397-0001-01
38 Soft Iron Wire 1/16″ Ø
STUFFING BOX ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Diaphragm Stuffing Box Assembly 2 —
2 Diaphragm Stuffing Box 2 6397-0625-00
3 Diaphragm Stuffing Box Retainer 2 —
4 Diaphragm Stuffing Box Gasket 2 7502-0597-00
5 Diaphragm Stuffing Box Spacer Spring 2 6397-0626-00
6 Diaphragm Stuffing Box Lock Spring 2 6397-0627-00
7 Diaphragm Stuffing Box Oil Seal 4 6397-1238-00
8 Fluid Baffle 2 6397-0118-01
9 Fluid Stuffing Box 2 6397-0354-02
10 Fluid Stuffing Box Gland 2 6397-0355-01
11 Fluid Stuffing Box Gland Bushing 2 6397-0614-00
12 Fluid Stuffing Box Packing 2 6397-1209-00
13 Fluid Stuffing Box Junk Ring 2 6397-0630-00
14 Fluid Stuffing Box Gasket 2 7602-160030 ARP 568-349
15 #6-203 Hose Assembly 2 7503-0160-30
16 O – Ring 2 7602-160024 ARP 568-341
17 O – Ring 2 —

19 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 12 7601-033051
20 Hex Hd Cap Screw, 3/8″ x 2-1/4″ 12 —
21 Hex Hd Cap Screw, 3/8″ x 1″ 8 —
22 3/8″ Internal Tooth Lock Washer, Type B 12 —
23 Lock Washer 12 7601-132016 1/2″
CROSSHEAD ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Crosshead 2 6397-0610-00
2 Crosshead Pin 2 6397-0112-00
3 Crosshead Pin Retainer 2 6397-0631-00
4 Crosshead Pin Retainer Bolt 7501-0004-00(4)
7 Crosshead Bearing 2 6397-0632-00
8 Crosshead Guide 2 6397-0609-00
9 Crosshead Guide Extension 2 6397-0623-00
10 Crosshead Guide Seal 2 6397-1236-00
11 Crosshead Guide Frame Seal 2 6397-1230-00
12 Crosshead Extension 2 6397-0619-00
13 Crosshead Door, C-E 2 500775-B
or Crosshead Door, Mid-Co 2 508443-D
14 Crosshead Door Gasket 2 6397-0621-00
15 #10-225 Hose Assembly 2 —
or Copper Tubing As sembly 2 7508-0070-50
16 Hex Head Cap Screw 1/2″ X 1-1/4″ ( 26 )
7601-033050
17 Hex Head Cap Screw 12 1/2″ X 4-1/2″
7601-033061
18 Socket Head Cap Screw 1-1/8″ X 3″ ( 12 )
7601-034071
19 SAE Plain Washer 7601-133004 ( 26 )

20 1/2″ Internal Tooth Lock Washer, Type B 12 —
21 Galv Bushing, 1/2″ x 3/8″ 4 7601-253033
22 Soft Iron Wire 11 Ga.
23 Lock Washer, 1/2″ 12 7601-132016
24 STRATO HEX HOSE ADAPTOR 2 1011-6.85
PINION ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Pinion Shaft-Single Ext Straight 1 6397-0620-01
or Pinion Shaft-Dbl Ext Straight 1 —
2 Pinion Shaft Key-Single Ext Straight 1 7504-2118-00
or Pinion Shaft Key-Dbl Ext Straight 1 —
3 Pinion Shaft Cover-Dbl Ext Straight 1 —
4 Pinion Bearing Carrier 2 6397-0613-10
5 Pinion Bearing Carrier Gasket 2 7502-0598-00
6 Pinion Bearing Retainer 2 —
7 Bearing Retainer Gasket 2 —
8 Oil Seal Wear Ring 2 —
9 Pinion Bearing, Hyatt 2 A-5220-TS
7602-021033
10 Oil Seal, C/R 2 #38696
7602-213052
11 Retainer Ring, Truarc, #5000-700 2 7602-204016
12 Hex Hd Cap Screw 6 —

13 Hex Head Cap Screw 16 5/8″ X 1-3/4″ (12)
7601-033077
14 Hex Hd Cap Screw, 3/8″ x 7/8″ 6 —
15 Lock Washer, 3/8″ 6 —
ECCENTRIC ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Main Bearing Carrier 1 6397-0617-00
2 Main Bearing Carrier 1 6397-0618-00
3 Main Bearing Cap, C-E 2 6397-1237-00
or Main Bearing Cap, Min-Co. 2 300458-B
4 Main Bearing Cap, Gasket 2 7502-0596-00
5 Main Bearing Retainer Bolt 12 7501-0038-00
6 Main Bearing Retainer Bolt 6 502002-L
7 Main Bearing Retainer-Inner 2 6397-0615-00
8 Main Bearing Retainer-Outer 2 6397-0616-00
9 Main Bearing Carrler Bolt 4 7501-1263-00
10 Shim Bet 4 7502-0320-00
11 Eccentric Bearing 2 6397-0260-00
12 Eccentric Btrap 2 N-26441-10
13 Eccentric Bearing Retainer – Outer 2 6397-0612-00
14 Eccentric Bearing Retainer – Inner 6 —
15 Bccentric Bearing Retainer Bolt 6 —
16 Eccentric Bearing Retainer Bolt 16 7301-0066-00
17 Eccentric Bear Ring 1 —
18 Eccentric Bear Hub 1 —
19 Eccentric Bear and Hub 1 6397-0611-00
20 Eccentric Bear Bolt – —
21 2 7602-020008 122222-C
22 Hex Head Cap Screw 12 7601-033050 1/2″ X 1-1/4″
23 12 7601-133004 17/32″ X 1-1/16″
24 Socket Hd Cap Screw, 1/2″ x 5/8″ 2 7601-034026
25 – —

27 Soft lron Wire – 16 On.
28 Soft lron Wire – 11 On.
R1 Main Bearing 2 —
ROD OILER ASSEMBLY W/HYPRO PUMP FOR SINGLE EXTENDED STRATGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly 500376-B
1 Belt Guard 1 500680-B
2 Pump Support 1 H-75256-L
3 #12-225 Hose Assembly 1 7503-0150-58
4 #12-225 Hose Assembly 1 7503-0240-58
5A Hypro Pump w/Rubber Rollers, 40002, see p.P-31-9 1 7602-182007
6 QD Driver Sheave, S.B. Hub w/2″ Bore 1 7602-236206
or Drive Sheave 1 —
7 Driven Sheave 2″PD-“A” 1 7602-236131
8 V-Belt 1 4L-630
7602-033184
9 Galv Street Ell, 3/4″ x 90° 4 7601-257090
10 Galv Elbow, 3/4″ x 90° 1 —
11 Hex Hd Cap Screw, 5/16″ x 5/8″ 4 7601-033016
12 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
13 Lock Washer, 5/16″ 4 7601-132013
14 Lock Washer, 1/2″ 2 7601-132016
15 Plain Washer, 1/2″ 2 7601-134005
16 Hex Hd Cap Screw, 1/2″ x 7″ 3 —
17 Lock Washer, 1/2″ 3 —

R1 Rod Oiler Tank or Cover 1 See Miscellaneous Items-page PA-56-1
R2 Hex Hd Cap Screw, 1/2″ x 1″ 1 7601-033049
ROD OILER ASSEMBLY W/ BROWN & SHARPE PUMP FOR SINGLE EXTENDED STRAIGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly 515345-B
1 Belt Guard 1 515341-B
2 Pump Support 1 6397-0762-00
3 #225-12 Hose Assembly 1 7503-0150-58
4 #203-12 Hose Assembly 1 7503-0240-55
5 Drive Sheave 1 6397-0807-00
6 #1 B&S Rotary Gear Pump, Foot Mtg w/o Relier Valve, 713-1-1 1 7602-184008
7 Drive Sheave-1A Worthington w/Key, Bored to Fit 9/16″ Ø Shaft w/1/8″ x 1/16″ Keyway 1 2″PD,BA-1-20 7602-236064
8 V-Belt 1 4L-630 7602-033184
9 Hex Hd Cap Screw, 3/8″ x 1″ 4 7601-033030
10 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
11 Cup Point Setscrew, 3/8″ x 3/4″ 2 7601-037064
12 Plain Washer, 9/16″ x 1-1/4″ 1 7601-140001
13 Lock Washer, 3/8″ 4 7601-132014
14 Lock Washer, 1/2″ 2 7601-132016
15 Galv Street Ell, 3/4″ x 90° 2 7601-257090
16 Galv Elbow, 3/4″ x 90° 2 7601-257042
17 Galv Close Nipple, 3/8″ 2 7601-258106
18 Galv Bushing, 3/4″ x 3/8″ 2 7601-253037
19 Hex Head Cap Screw, 1/2″ x 8″ 3 —
20 Lock Washer, 1/2″ 3 —
21 Stflx Adapter 1011-12-12B 1 7601-209026
R1 Rod Lubricator Tank or Cover 1 See Misc. Items, p. PA-56-1
R2 Hex Head Cap Screw, 1/2″ x 1″ 1 7601-033049

EMSCO D-225 DUPLEX MUD PUMP

MISCELLANEOUS ITEMS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Gear Case Cover 1 6307-0003-00
2 Cover Gasket, 3/8″ x 1″ Neopr. Sponge 1 7602-059011
3 Oil Level Indicator 2 6397-0182-00
4A Inspection Door, C-E, see p.P-31-1 1 7510-0201-00
or Inspection Door, Mid-Co., see p.P-31-1 1 7510-0208-00
5 Inspection Door Gasket 1 7502-0103-00
6 Hold-Down Bolt 4 7501-2610-00
7 Hold-Down Bolt 4 7501-2621-00
8 Breather Cap 1 6397-0186-00
9 Breather Cap Stud 1 7507-0200-00
10A Shear Relief Valve, See p.P-31-13 1 6923-0008-00
11 Rod Lubricator Tank 1 —
12 Rod Lubricator Tank Cover, N.S. 1 7510-0006-00
13 Rod Lubricator Tank Cover, F.S. 1 7510-0005-00
14 Cover Gasket 2 7502-0131-00
15 Main Bearing Bolt Wrench 1 1″ Allen Key
16 Valve Pot Cover Bar 1 6397-0719-00
17 Proto X-Hvy Duty Socket 1 7602-301016
18 Proto Socket – Stuffing Box # 5548 1 7602-301035
19 Proto Sliding Bar, 5685 1 7602-301013
20 Proto 8″ Extension, 5661 1 7602-301014
21 H.P. Steel, Pipe Plug, 2″ 1 7601-259073
22 Hex Hd Cap Screw, 1/2″ x 1-1/4″ 4 7601-033050
23 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 4 7601-033051
25 Plpe Bushing, 3″ x 2″ 1 —
26 Lock Washer, 1/2″ 8 7601-132016
27 Galv Nipple, 1/2″ x —— 2 7601-258137 6-1/2″
FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. “PART NO.
API 6 VLV POT”
1 Fluid End 1 6397-0610-00
2 Fluid End Stud 16 7507-3404-00
3 Fluid End Stud 8 7507-1900-00
4 Fluid End Stud 20 7507-3405-00
5 Suction Flange Stud 12 7507-2003-00
6 Discharge Flange Stud 8 7507-1901-00
7A Air Chamber Assembly 1 6397-0073-00
8 Air Chamber Body 1 6397-0787-00
9 Strainer 1 6397-0129-00
10 Strainer Cap 1 6397-0665-00
11 Gasket 1 6397-0101-01
12 Stud 16 7507-1902-00
13 Discharge Flange 1 6397-0074-00
14 Gasket 1 6397-0001-01
15 Cylinder Head 2 6397-0599-00
16 Cylinder Liner Cage 2 6397-0597-00
17 Liner Seal 6 6397-0649-00
18 Valve Pot Cover 8 6397-0598-00
19 Valve Pot Cover Gasket 8 6397-0607-00
20 Valve Guide 8 6397-0602-00
21 Valve Bumper 8 6397-0148-00
22 Valve Guide Retainer 8 6397-0603-00
23 Valve Guide Retainer Bolt 32 7501-0051-00
24 Valve Spring 8 6397-0579-00
25 Suction Flange 1 6397-0233-00
26 Suction Flange Gasket, ARP 568-447 1 7602-160057
27 Shim Set 2 6397-0716-00
28 Hex Head Cap Screw 4 3/4″ x 3″
7601-033100
29 Hex Nut 4 3/4″
7601-061014
30 Hex Nut 16 7/8″
7601-061016
31 Hex Nut 8 7/8″ – 9 Hvy
7601-063023
32 Hex Nut, 1″ – 8 Hvy 12 7601-063020
33 Hex Nut, 1-1/8″ – 8 Hvy 36 7601-063026
34 Hex Nut 8 7/8″ – 9 Hvy
7601-063023
35 Lock Washer 4 3/4“
7601-132018
36 Teylor Blind Flange 4″ – 900 # 1 —
37 Air Chamber to Fluid End Gasket 1 6397-0001-01
38 Soft Iron Wire 1/16″ Ø
STUFFING BOX ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Diaphragm Stuffing Box Assembly 2 —
2 Diaphragm Stuffing Box 2 6397-0593-00
3 Diaphragm Stuffing Box Retainer 2 —
4 Diaphragm Stuffing Box Gasket 2 7502-0595-00
5 Diaphragm Stuffing Box Spacer Spring 2 6397-0551-00
6 Diaphragm Stuffing Box Lock Spring 2 6397-0595-00
7 Diaphragm Stuffing Box Oil Seal 4 6307-0016-00
8 Fluid Baffle 2 6397-0159-00
9 Fluid Stuffing Box 2 6397-0354-02
10 Fluid Stuffing Box Gland 2 6397-0355-01
11 Fluid Stuffing Box Gland Bushing 2 6397-0015-00
12 Fluid Stuffing Box Packing 2 6397-0741-00
13 Fluid Stuffing Box Junk Ring 2 6397-0012-00
14 Fluid Stuffing Box Gasket 2 7602-160030 ARP 568-349
15 #6-203 Hose Assembly 2 7503-0200-30
16 O – Ring 2 7602-160025 ARP 568-343
17 O – Ring 2 —

19 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 12 7601-033051
20 Hex Hd Cap Screw, 3/8″ x 2-1/4″ 12 —
21 Hex Hd Cap Screw, 3/8″ x 1″ 8 —
22 3/8″ Internal Tooth Lock Washer, Type B 12 —
23 Lock Washer 12 7601-132016 1/2″
CROSSHEAD ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Crosshead 2 6397-0574-00
2 Crosshead Pin 2 6397-0570-00
3 Crosshead Pin Retainer 2 6397-0584-00
4 Crosshead Pin Retainer Bolt 7501-1258-00 (8)
7 Crosshead Bearing 2 6397-0633-00
8 Crosshead Guide 2 6397-0582-00
9 Crosshead Guide Extension 2 6397-0594-00
10 Crosshead Guide Seal 2 6397-0596-00
11 Crosshead Guide Frame Seal 2 6397-0606-00
12 Crosshead Extension 2 6397-0600-00
13 Crosshead Door, C-E 2 6397-0608-00
or Crosshead Door, Mid-Co 2 6307-0017-00
14 Crosshead Door Gasket 2 6397-0622-00
15 #10-225 Hose Assembly 2 —
or Copper Tubing As sembly 2 7508-0080-36 HOSE
16 Hex Head Cap Screw 1/2″ X 1-1/4″ ( 26 )
7601-033050
17 Hex Head Cap Screw 12 1/2″ X 4-1/4″
7601-033445
18 Socket Head Cap Screw 1-1/8″ X 4″ ( 15 )
7601-034073
19 SAE Plain Washer 7601-133004 ( 36 )

20 1/2″ Internal Tooth Lock Washer, Type B 12 76-1-137008
21 Galv Bushing, 1/2″ x 3/8″ 4 7601-253033
22 Soft Iron Wire 11 Ga.
23 Lock Washer, 1/2″ 12 —
24 STRATO HEX HOSE ADAPTOR 2
PINION ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Pinion Shaft-Single Ext Straight 1 6397-0585-01
or Pinion Shaft-Dbl Ext Straight 1 —
2 Pinion Shaft Key-Single Ext Straight 1 7504-2118-00
or Pinion Shaft Key-Dbl Ext Straight 1 —
3 Pinion Shaft Cover-Dbl Ext Straight 1 —
4 Pinion Bearing Carrier 2 6397-0583-10
5 Pinion Bearing Carrier Gasket 2 7502-0592-00
6 Pinion Bearing Retainer 2 6397-0587-10
7 Bearing Retainer Gasket 2 7502-0591-00
8 Oil Seal Wear Ring 2 6397-0592-00
9 Pinion Bearing, Hyatt 2 A-5222-TS.
7602-021034
10 Oil Seal, C/R 2 #7381
7602-213069
11 Retainer Ring, Truarc, #5000-700 2 —
12 Hex Hd Cap Screw 6 3/8″ X 1-1/2″
7601-033032
13 Hex Head Cap Screw 16 3/4″ X 2″
7601-033097
14 Hex Hd Cap Screw, 3/8″ x 7/8″ 6 —
15 Lock Washer, 3/8″ 6 —
BCCENTRIC ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Main Bearing Carrier 1 6397-0500-00
2 Main Bearing Carrier 1 6397-0509-00
3 Main Bearing Cap, C-E 2 6397-0030-00
or Main Bearing Cap, Min-Co. 2 6397-0010-00
4 Main Bearing Cap, Gasket 2 7502-0594-00
5 Main Bearing Retainer Bolt 12 7501-0038-00 ( 10 )
6 Main Bearing Retainer Bolt 6 7501-0071-00
7 Main Bearing Retainer-Inner 2 6397-0603-00
8 Main Bearing Retainer-Outer 2 6397-0591-00
9 Main Bearing Carrler Bolt 4 7501-1261-00
10 Shim Bet 4 7502-0311-00
11 Eccentric Bearing 2 6397-0250-00
12 Eccentric Btrap 2 6397-0586-00
13 Eccentric Bearing Retainer – Outer 2 6397-0252-00
14 Eccentric Bearing Retainer – Inner 6 —
15 Bccentric Bearing Retainer Bolt 6 —
16 Eccentric Bearing Retainer Bolt 16 7501-1252-00
17 Eccentric Bear Ring 1 6397-0501-01
18 Eccentric Bear Hub 1 6397-0508-00
19 Eccentric Bear and Hub 1 —
20 Eccentric Bear Bolt – 7601-033101 3/4″ X 3-1/4″ ( 10 )
21 2 7602-020038 123034-C
22 Hex Head Cap Screw 12 7601-033030 1/2″ X 1-3/4″ ( 16 )
23 12 7601-133004 17/32″ X 1-1/16″ (16 )
24 Socket Hd Cap Screw, 1/2″ x 5/8″ 2 7601-034026
25 – 7601-072013 3/4″ ( 10 )
49- ? -120
27 Soft lron Wire – 16 On.
28 Soft lron Wire – 11 On.
R1 Main Bearing 2 —
ROD OILER ASSEMBLY W/HYPRO PUMP FOR SINGLE EXTENDED STRATGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly 500190-B
1 Belt Guard 1 500046-B
2 Pump Support 1 H-75256-L
3 #12-225 Hose Assembly 1 7503-0220-58
4 #12-225 Hose Assembly 1 7503-0320-58
5A Hypro Pump w/Rubber Rollers, 40002, see p.P-31-9 1 7602-182007
6 QD Driver Sheave, S.B. Hub w/2″ Bore 1 7602-236206
or Drive Sheave 1 —
7 Driven Sheave 2″PD-“A” 1 7602-236131
8 V-Belt 1 4L-670
7602-033178
9 Galv Street Ell, 3/4″ x 90° 4 7601-257090
10 Galv Elbow, 3/4″ x 90° 1 —
11 Hex Hd Cap Screw, 5/16″ x 5/8″ 4 7601-033016
12 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
13 Lock Washer, 5/16″ 4 7601-132013
14 Lock Washer, 1/2″ 2 7601-132016
15 Plain Washer, 1/2″ 2 7601-134005
16 Hex Hd Cap Screw, 1/2″ x 7″ 3 —
17 Lock Washer, 1/2″ 3 —

R1 Rod Oiler Tank or Cover 1 See Miscellaneous Items-page PA-56-1
R2 Hex Hd Cap Screw, 1/2″ x 1″ 1 7601-033049
ROD OILER ASSEMBLY W/ BROWN & SHARPE PUMP FOR SINGLE EXTENDED STRAIGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly 6307-0004-00
1 Belt Guard 1 6397-0838-00
2 Pump Support 1 6397-0762-00
3 #225-12 Hose Assembly 1 7503-0220-58
4 #203-12 Hose Assembly 1 7503-0264-55
5 Drive Sheave 1 6397-0807-00
6 #1 B&S Rotary Gear Pump, Foot Mtg w/o Relier Valve, 713-1-1 1 7602-184008
7 Drive Sheave-1A Worthington w/Key, Bored to Fit 9/16″ Ø Shaft w/1/8″ x 1/16″ Keyway 1 2″PD,BA-1-20 7602-236064
8 V-Belt 1 4L-670 7602-033178
9 Hex Hd Cap Screw, 3/8″ x 1″ 4 7601-033030
10 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
11 Cup Point Setscrew, 3/8″ x 3/4″ 2 7601-037064
12 Plain Washer, 9/16″ x 1-1/4″ 1 7601-140001
13 Lock Washer, 3/8″ 4 7601-132014
14 Lock Washer, 1/2″ 2 7601-132016
15 Galv Street Ell, 3/4″ x 90° 2 7601-257090
16 Galv Elbow, 3/4″ x 90° 2 7601-257042
17 Galv Close Nipple, 3/8″ 2 7601-258106
18 Galv Bushing, 3/4″ x 3/8″ 2 7601-253037
19 Hex Head Cap Screw, 1/2″ x 8″ 3 —
20 Lock Washer, 1/2″ 3 —
21 Stflx Adapter 1011-12-12B 1 7601-209026
R1 Rod Lubricator Tank or Cover 1 See Misc. Items, p. PA-56-1
R2 Hex Head Cap Screw, 1/2″ x 1″ 1 7601-033049

EMSCO D-375 DUPLEX MUD PUMP

MISCELLANEOUS ITEMS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Gear Case Cover 1 6397-0872-00
2 Cover Gasket, 3/8″ x 1″ Neopr. Sponge 1 7602-059015
3 Oil Level Indicator 2 6397-0668-00
4A Inspection Door, C-E, see p.P-31-1 1 7510-0201-00
or Inspection Door, Mid-Co., see p.P-31-1 1 7510-0208-00
5 Inspection Door Gasket 1 7502-0103-00
6 Hold-Down Bolt 4 7501-2610-00
7 Hold-Down Bolt 4 7501-2621-00
8 Breather Cap 1 6397-0186-00
9 Breather Cap Stud 1 7507-0200-00
10A Shear Relief Valve, See p.P-31-13 1 6923-0008-00
11 Rod Lubricator Tank 1 6397-0826-00
12 Rod Lubricator Tank Cover, N.S. 1 6397-0827-00
13 Rod Lubricator Tank Cover, F.S. 1 —
14 Cover Gasket 2 —
15 Main Bearing Bolt Wrench 1 6397-0578-00
16 Valve Pot Cover Bar 1 6397-0700-00
17 Proto X-Hvy Duty Socket 1 7602-301016
18 Proto Socket – Stuffing Box # 5548 1 7602-3010 L1
19 Proto Sliding Bar, 5685 1 7602-301013
20 Proto 8″ Extension, 5661 1 7602-301014
21 H.P. Steel, Pipe Plug, 2″ 1 —
22 Hex Hd Cap Screw, 1/2″ x 1-1/4″ 4 —
23 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 4 —
25 Plpe Bushing, 3″ x 2″ 1 —
26 Lock Washer, 1/2″ 8 —
27 Galv Nipple, 1/2″ x —— 2 7601-258394 7-1/2″
FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. “PART NO.
API 7 VLV POT”
1 Fluid End 1 6397-0577-00
2 Fluid End Stud 16 7507-3405-00 ( 20 )
3 Fluid End Stud 8 7507-2003-00 ( 12 )
4 Fluid End Stud 20 7507-3405-00 ( 24 )
5 Suction Flange Stud 12 —
6 Discharge Flange Stud 8 7507-3404-00
7A Air Chamber Assembly 1 6397-0569-00
8 Air Chamber Body 1 6397-0784-00
9 Strainer 1 6397-0128-01
10 Strainer Cap 1 6397-0291-00
11 Gasket 1 7602-160040, ARP 568-439
12 Stud 16 7507-3400-00
13 Discharge Flange 1 6397-0098-00
14 Gasket 1 6397-0038-01 ( 2 )
15 Cylinder Head 2 6397-0536-00
16 Cylinder Liner Cage 2 6397-0537-00
17 Liner Seal 6 6397-0648-00
18 Valve Pot Cover 8 6397-0538-00
19 Valve Pot Cover Gasket 8 6397-0462-00
20 Valve Guide 8 6397-0575-00
21 Valve Bumper 8 6397-0148-00
22 Valve Guide Retainer 8 6397-0576-00
23 Valve Guide Retainer Bolt 32 7501-0051-00
24 Valve Spring 8 6397-0579-00
25 Suction Flange 1 —
26 Suction Flange Gasket, ARP 568-447 1 —
27 Shim Set 2 6397-0452-00
28 Hex Head Cap Screw 4 1″ x 4″
7601-033137
29 Hex Nut 4 1″
7601-061018
30 Hex Nut 16 1-1/8″
7601-061021
31 Hex Nut 8 1″ (12)
7601-OL101
32 Hex Nut, 1″ – 8 Hvy 12 —
33 Hex Nut, 1-1/8″ – 8 Hvy 36 7601-063026(44)
34 Hex Nut 8 1-1/8″ – 8 Hvy
7601-063026
35 Lock Washer 4 1“
7601-132033
36 Teylor Blind Flange 4″ – 900 # 1 7601-206034
37 Air Chamber to Fluid End Gasket 1 7602-160040
38 Soft Iron Wire 1/16″ Ø
STUFFING BOX ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Diaphragm Stuffing Box Assembly 2 —
2 Diaphragm Stuffing Box 2 6397-0590-00
3 Diaphragm Stuffing Box Retainer 2 —
4 Diaphragm Stuffing Box Gasket 2 7502-0593-00
5 Diaphragm Stuffing Box Spacer Spring 2 6397-0531-00
6 Diaphragm Stuffing Box Lock Spring 2 6397-0530-00
7 Diaphragm Stuffing Box Oil Seal 4 6306-0046-00
8 Fluid Baffle 2 6397-0055-01
9 Fluid Stuffing Box 2 6397-0254-10
10 Fluid Stuffing Box Gland 2 6397-0256-10
11 Fluid Stuffing Box Gland Bushing 2 6397-0199-00
12 Fluid Stuffing Box Packing 2 6397-0742-00
13 Fluid Stuffing Box Junk Ring 2 6397-0360-00
14 Fluid Stuffing Box Gasket 2 7602-160034 ARP 568-430
15 #6-203 Hose Assembly 2 7503-0170-30
16 O – Ring 2 7602-160026 ARP 568-345
17 O – Ring 2 —

19 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 12 7601-033051
20 Hex Hd Cap Screw, 3/8″ x 2-1/4″ 12 —
21 Hex Hd Cap Screw, 3/8″ x 1″ 8 —
22 3/8″ Internal Tooth Lock Washer, Type B 12 —
23 Lock Washer 12 7601-132016 1/2″
CROSSHEAD ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Crosshead 2 6397-0568-00
2 Crosshead Pin 2 6397-0242-01
3 Crosshead Pin Retainer 2 6397-0526-00
4 Crosshead Pin Retainer Bolt 7501-1262-00 (12)
7 Crosshead Bearing 2 6397-0245-00
8 Crosshead Guide 2 6397-0556-00
9 Crosshead Guide Extension 2 6397-0559-00
10 Crosshead Guide Seal 2 6397-0572-00
11 Crosshead Guide Frame Seal 2 6397-0573-00
12 Crosshead Extension 2 6397-0567-00
13 Crosshead Door, C-E 2 6397-0566-00
or Crosshead Door, Mid-Co 2 6306-0034-00
14 Crosshead Door Gasket 2 6397-0571-00
15 #10-225 Hose Assembly 2 —
or Copper Tubing As sembly 2 7508-0110-36 HOSE
16 Hex Head Cap Screw 1/2″ X 1″ ( 28 )
7601-033049
17 Hex Head Cap Screw 12 1/2″ X 5-1/2″
7601-033063
18 Socket Head Cap Screw 1-1/8″ X 4″ ( 20 )
7601-034073
19 SAE Plain Washer 7601-133004 ( 28 )

20 1/2″ Internal Tooth Lock Washer, Type B 12 76-1-137008
21 Galv Bushing, 1/2″ x 3/8″ 4 —
22 Soft Iron Wire 16 Ga.
23 Lock Washer, 1/2″ 12 —
24 STRATO HEX HOSE ADAPTOR 2
PINION ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Pinion Shaft-Single Ext Straight 1
or Pinion Shaft-Dbl Ext Straight 1 6397-0534-10
2 Pinion Shaft Key-Single Ext Straight 1 7504-2912-00
or Pinion Shaft Key-Dbl Ext Straight 1 7504-2912-00
3 Pinion Shaft Cover-Dbl Ext Straight 1 6397-0053-00
4 Pinion Bearing Carrier 2 6397-0557-10
5 Pinion Bearing Carrier Gasket 2 7502-0590-00
6 Pinion Bearing Retainer 2 6397-0558-10
7 Bearing Retainer Gasket 2 7502-0589-00
8 Oil Seal Wear Ring 2 6397-0535-00
9 Pinion Bearing, Hyatt 2 A-5226-TS.
7602-021036
10 Oil Seal, C/R 2 #53701
7602-213082
11 Retainer Ring, Truarc, #5000-700 2 —
12 Hex Hd Cap Screw 6 1/2″ X 1-1/4″
7601-033050
13 Hex Head Cap Screw 16 3/4″ X 1-3/4″ ( 12 )
7601-033096
14 Hex Hd Cap Screw, 3/8″ x 7/8″ 6 —
15 Lock Washer, 3/8″ 6 —
BCCENTRIC ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Main Bearing Carrier 1 6397-0552-01
2 Main Bearing Carrier 1 6397-0552-00
3 Main Bearing Cap, C-E 2 6397-0554-00
or Main Bearing Cap, Min-Co. 2 6306-0032-00
4 Main Bearing Cap, Gasket 2 7502-0687-00
5 Main Bearing Retainer Bolt 12 7501-0038-00
6 Main Bearing Retainer Bolt 6 7501-0003-00
7 Main Bearing Retainer-Inner 2 6397-0405-00
8 Main Bearing Retainer-Outer 2 6397-0553-00
9 Main Bearing Carrler Bolt 4 7501-2632-00
10 Shim Bet 4 7502-0310-00
11 Eccentric Bearing 2 6397-0259-00
12 Eccentric Btrap 2 6397-0238-01
13 Eccentric Bearing Retainer – Outer 2 6397-0253-00
14 Eccentric Bearing Retainer – Inner 6 7304-0013-00
15 Bccentric Bearing Retainer Bolt 6 7301-0056-00
16 Eccentric Bearing Retainer Bolt 16 7501-1252-00
17 Eccentric Bear Ring 1 6397-0532-01
18 Eccentric Bear Hub 1 6397-0481-02
19 Eccentric Bear and Hub 1 —
20 Eccentric Bear Bolt – 7601-033501 1/4″ X 4-1/4″ ( 24 )
21 2 7602-020015 122236-C
22 Hex Head Cap Screw 12 7601-033086 3/4″ X 1-3/4″
23 12 7601-133006 13/16″ X 1-1/2″
24 Socket Hd Cap Screw, 1/2″ x 5/8″ 2 —
25 – 7601-022013 3/4″ ( 24 )
49- ? -120
27 Soft lron Wire – 16 On.
28 Soft lron Wire – 11 On.
R1 Main Bearing 2 6397-0711-00
ROD OILER ASSEMBLY W/HYPRO PUMP FOR SINGLE EXTENDED STRATGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly H-76720-B
1 Belt Guard 1 H-76836-B
2 Pump Support 1 H-75256-L
3 #12-225 Hose Assembly 1 7503-0320-58
4 #12-225 Hose Assembly 1 7503-0220-58
5A Hypro Pump w/Rubber Rollers, 40002, see p.P-31-9 1 7602-182007
6 QD Driver Sheave, S.B. Hub w/2″ Bore 1 —
or Drive Sheave 1 6397-1239-00
7 Driven Sheave 2″PD-“A” 1 7602-236131
8 V-Belt 1 A-85
7602-033028
9 Galv Street Ell, 3/4″ x 90° 4 7601-257090 (3)
10 Galv Elbow, 3/4″ x 90° 1 7601-257042
11 Hex Hd Cap Screw, 5/16″ x 5/8″ 4 7601-033016
12 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
13 Lock Washer, 5/16″ 4 7601-132013
14 Lock Washer, 1/2″ 2 7601-132016
15 Plain Washer, 1/2″ 2 7601-134005
16 Hex Hd Cap Screw, 1/2″ x 7″ 3 7601-033066
17 Lock Washer, 1/2″ 3 7601-132016

R1 Rod Oiler Tank or Cover 1 See Miscellaneous Items-page PA-56-1
R2 Hex Hd Cap Screw, 1/2″ x 1″ 1 7601-033049
ROD OILER ASSEMBLY W/ BROWN & SHARPE PUMP FOR SINGLE EXTENDED STRAIGHT PINION SHAFT
ITEM NO. DESCRIPTION NO. REQD. PART NO.
Assembly 6306-0031-00
1 Belt Guard 1 6397-0837-00
2 Pump Support 1 6397-0762-00
3 #225-12 Hose Assembly 1 7503-0320-58
4 #203-12 Hose Assembly 1 7503-0220-55
5 Drive Sheave 1 6306-0033-00
6 #1 B&S Rotary Gear Pump, Foot Mtg w/o Relier Valve, 713-1-1 1 7602-184008
7 Drive Sheave-1A Worthington w/Key, Bored to Fit 9/16″ Ø Shaft w/1/8″ x 1/16″ Keyway 1 3″PD,BA-1-30 7602-236055
8 V-Belt 1 A-85 7602-033028
9 Hex Hd Cap Screw, 3/8″ x 1″ 4 7601-033030
10 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 2 7601-033051
11 Cup Point Setscrew, 3/8″ x 3/4″ 2 —
12 Plain Washer, 9/16″ x 1-1/4″ 1 7601-140001
13 Lock Washer, 3/8″ 4 7601-132014
14 Lock Washer, 1/2″ 2 7601-132016
15 Galv Street Ell, 3/4″ x 90° 2 7601-257090 (1)
16 Galv Elbow, 3/4″ x 90° 2 7601-257042 (3)
17 Galv Close Nipple, 3/8″ 2 7601-258106
18 Galv Bushing, 3/4″ x 3/8″ 2 7601-253037
19 Hex Head Cap Screw, 1/2″ x 8″ 3 7601-033067
20 Lock Washer, 1/2″ 3 7601-132016
21 Stflx Adapter 1011-12-12B 1 7601-209026
R1 Rod Lubricator Tank or Cover 1
R2 Hex Head Cap Screw, 1/2″ x 1″ 1 7601-033049

EMSCO D-550 DUPLEX MUD PUMP

MISCELLANEOUS ITEMS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Gear Case Cover 1 6397-0871-00
2 Cover Gasket, 3/8″ x 1″ Neopr. Sponge 1 7602-059019
3 Oil Level Indicator 2 6397-0707-00
4A Inspection Door, C-E, see p.P-31-1 1 7510-0201-00 (2)
or Inspection Door, Mid-Co., see p.P-31-1 1 7510-0208-00 (2)
5 Inspection Door Gasket 1 7502-0103-00 (2)
6 Hold-Down Bolt 4 7501-2610-00 (5)
7 Hold-Down Bolt 4 7501-2621-00
8 Breather Cap 1 6397-0186-00
9 Breather Cap Stud 1 7507-0200-00
10A Shear Relief Valve, See p.P-31-13 1 6923-0008-00
11 Rod Lubricator Tank 1 6397-0820-00
12 Rod Lubricator Tank Cover, N.S. 1 6397-0819-00
13 Rod Lubricator Tank Cover, F.S. 1 —
14 Cover Gasket 2 —
15 Main Bearing Bolt Wrench 1 6397-0418-00
16 Valve Pot Cover Bar 1 6397-0700-00
17 Proto X-Hvy Duty Socket 1 7602-301012
18 Proto Socket – Stuffing Box # 5548 1 7602-301036
19 Proto Sliding Bar, 5685 1 7602-301013
20 Proto 8″ Extension, 5661 1 7602-301014
21 H.P. Steel, Pipe Plug, 2″ 1 —
22 Hex Hd Cap Screw, 1/2″ x 1-1/4″ 4 —
23 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 4 —
25 Plpe Bushing, 3″ x 2″ 1 7601-253085
26 Lock Washer, 1/2″ 8 —
27 Galv Nipple, 1/2″ x —— 2 7601-258367 ( 10″ )
FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Fluid End, R.H. – Studded 1 6397-0513-00
2 Fluid End, L.H. – Studded 1 6397-0512-00
3 Fluid End Stud 20 7507-2003-00 (12)
4 Fluid End Stud 20 7507-2101-00
5 Fluid End Stud 24 7507-2102-00
6 Suction Manifold Assembly 1 6397-0511-00
7 Suction Manifold Gasket 4 7602-160065 ARP 568-444
8A Discharge Manifold Assembly, See PA-51-5 1 6397-0510-10
9 Discharge Manifold Gasket, ARP 568-347 2 7602-160028
10 Discharge Manifold Bolt 8 7501-2631-00
11 Cylinder Head 2 6397-0764-00
12 Cylinder Liner Cage 2 6397-0779-00
13 Liner Seal 6 6397-0648-00
14 Valve Pot Cover 8 6397-0426-00
15 Valve Pot Cover Gasket 8 6397-0461-00
16 Valve Guide Retainer Bolt 32 7501-0051-00
17 Valve Spring 8 6397-0428-00
18 Valve Guide Retainer 8 6397-0147-00
19 Valve Guide 8 6397-0432-00
20 Valve Pot Bumper 8 6397-0148-00
21 Fluid End Shim Set 2 6397-0519-00
22 Fluid End Shim Set 2 6397-0517-00
23 Ferry Counter-Bor Screw, 1″ x 3″ 28 7601-036013
24 Hex Head Cap Screw 4 7601-033116 7/8″ x 3″
25 Hex Head Cap Screw 4 7601-033116 7/8″ x 3″
26 Hex Nut 7/8″ 8 7601-061016
27 Hex Nut 1-1/4″-8 Hvy 8 7601-063024
28 Hex Nut 20 7601-063020 1″-8 Hvy (12)
29 Hex Nut 20 7601-063024 1-1/4″-8 Hvy
30 Hex Nut 24 7601-063024 1-1/4″-8 Hvy
31 Lock Washer, 7/8″ 8 7601-132019
32 Soft Iron Wire 1/16″
33 Hex Hd Steel Pipe Plug 3/4″ 4 7601-259036
AIR CHAMBER ASSEMBLY
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Air Chamber Body 1 6397-1215-00
2 Manifold Adapter Flange 1 6397-0431-00
3 Stud 8 7507-3404-00
4 Ladish Ring Joint R-37 1 7602-066002
5 1-1/8″ – 7UNC -2B Hvy Hex Nut 8 7601-063025
STUFFING BOX ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Diaphragm Stuffing Box Assembly 2 6397-0550-00
2 Diaphragm Stuffing Box 2 6397-0560-00
3 Diaphragm Stuffing Box Retainer 2 6397-0561-00
4 Diaphragm Stuffing Box Gasket 2 7502-0588-00
5 Diaphragm Stuffing Box Spacer Spring 2 6397-0564-00
6 Diaphragm Stuffing Box Lock Spring 2 6397-0565-00
7 Diaphragm Stuffing Box Oil Seal 4 6305-0071-00
8 Fluid Baffle 2 6397-0094-01
9 Fluid Stuffing Box 2 6397-0254-01
10 Fluid Stuffing Box Gland 2 6397-0256-00
11 Fluid Stuffing Box Gland Bushing 2 6397-0089-00
12 Fluid Stuffing Box Packing 2 6397-0743-00
13 Fluid Stuffing Box Junk Ring 2 6397-0255-00
14 Fluid Stuffing Box Gasket 2 7602-160034 ARP 568-430
15 #6-203 Hose Assembly 2 7503-0190-30
16 O – Ring 2 7602-160033 ARP 568-429
17 O – Ring 2 7602-161020 ARP 568-259

19 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 12 —
20 Hex Hd Cap Screw, 3/8″ x 2-1/4″ 12 7601-033035
21 Hex Hd Cap Screw, 3/8″ x 1″ 8 7601-033030
22 3/8″ Internal Tooth Lock Washer, Type B 12 7601-137007
23 Lock Washer 12 7601-132014 3/8″ ( 8 Reqd )
CROSSHEAD ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Crosshead 2 6397-0499-00
2 Crosshead Pin 2 6397-0236-00
3 Crosshead Pin Retainer 2 6397-0507-00
4 Crosshead Pin Retainer Bolt 7501-1250-00 (12)
7 Crosshead Bearing 2 6397-0237-00
8 Crosshead Guide 2 6397-0476-00
9 Crosshead Guide Extension 2 6397-0508-00
10 Crosshead Guide Seal 2 6397-0490-00
11 Crosshead Guide Frame Seal 2 6397-0525-00
12 Crosshead Extension 2 6397-0506-00
13 Crosshead Door, C-E 2 6397-0514-00
or Crosshead Door, Mid-Co 2 6305-0072-00
14 Crosshead Door Gasket 2 7502-0123-00
15 #10-225 Hose Assembly 2 7503-0090-50
or Copper Tubing As sembly 2 —
16 Hex Head Cap Screw 1/2″ X 1″ ( 24 )
7601-033049
17 Hex Head Cap Screw 12 1/2″ X 5-1/2″
7601-033063
18 Socket Head Cap Screw 1/4″ X 5″ ( 20 )
7601-034078
19 SAE Plain Washer 7601-140001 ( 24 )

R2 Hex Head Cap Screw, 1/2″ x 1″ 1 7601-033049
BCCENTRIC ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Main Bearing Carrier 1 6397-0776-01
2 Main Bearing Carrier 1 6397-0776-00
3 Main Bearing Cap, C-E 2 6397-0488-00
or Main Bearing Cap, Min-Co. 2 6305-0064-00
4 Main Bearing Cap, Gasket 2 7502-0646-00
5 Main Bearing Retainer Bolt 12 7501-0038-00
6 Main Bearing Retainer Bolt 6 7501-0033-00
7 Main Bearing Retainer-Inner 2 6397-0477-00
8 Main Bearing Retainer-Outer 2 6397-0699-00
9 Main Bearing Carrler Bolt 4 7501-2627-00
10 Shim Bet 4 7502-0300-00
11 Eccentric Bearing 2 6397-0257-00
12 Eccentric Btrap 2 6397-0300-00
13 Eccentric Bearing Retainer – Outer 2 6397-0290-00
14 Eccentric Bearing Retainer – Inner 6 7304-0015-00
15 Bccentric Bearing Retainer Bolt 6 7301-0056-00
16 Eccentric Bearing Retainer Bolt 16 7501-1251-00 ( 24 )
17 Eccentric Bear Ring 1 6397-0505-01
18 Eccentric Bear Hub 1 6397-0503-00
19 Eccentric Bear and Hub 1 —
20 Eccentric Bear Bolt – 7601-033501 1″ X 4-1/2″ ( 12 )
21 2 7602-020015 122240-C
22 Hex Head Cap Screw 12 7601-033096 3/4″ X 1-3/4″
23 12 7601-133006 13/16″ X 1-1/2″
24 Socket Hd Cap Screw, 1/2″ x 5/8″ 2 —
25 – 7601-022017 1″ ( 24 )
49- ? -168
27 Soft lron Wire – 16 On.
28 Soft lron Wire – 11 On.
R1 Main Bearing 2 6397-0479-00

EMSCO DB-550 DUPLEX MUD PUMP

MISCELLANEOUS ITEMS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Gear Case Cover 1 6397-0871-00
2 Cover Gasket, 3/8″ x 1″ Neopr. Sponge 1 7602-059019
3 Oil Level Indicator 2 6397-0707-00
4A Inspection Door, C-E, see p.P-31-1 1 7510-0201-00 (2)
or Inspection Door, Mid-Co., see p.P-31-1 1 7510-0208-00 (2)
5 Inspection Door Gasket 1 7502-0103-00 (2)
6 Hold-Down Bolt 4 7501-2610-00
7 Hold-Down Bolt 4 7501-2621-00 (5)
8 Breather Cap 1 6397-0186-00
9 Breather Cap Stud 1 7507-0200-00
10A Shear Relief Valve, See p.P-31-13 1 6923-0008-00
11 Rod Lubricator Tank 1 6397-0820-00
12 Rod Lubricator Tank Cover, N.S. 1 6397-0819-00
13 Rod Lubricator Tank Cover, F.S. 1 —
14 Cover Gasket 2 —
15 Main Bearing Bolt Wrench 1 6397-0418-00
16 Valve Pot Cover Bar 1 6397-0700-00
17 Proto X-Hvy Duty Socket 1 7602-301012
18 Proto Socket – Stuffing Box # 5548 1 7602-301036
19 Proto Sliding Bar, 5685 1 7602-301013
20 Proto 8″ Extension, 5661 1 7602-301014
21 H.P. Steel, Pipe Plug, 2″ 1 —
22 Hex Hd Cap Screw, 1/2″ x 1-1/4″ 4 —
23 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 4 —
25 Plpe Bushing, 3″ x 2″ 1 7601-253085
26 Lock Washer, 1/2″ 8 —
27 Galv Nipple, 1/2″ x —— 2 7601-258367 ( 10″ )
FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Fluid End, R.H. – Studded 1 6305-0065-00
2 Fluid End, L.H. – Studded 1 6305-0053-00
3 Fluid End Stud 20 7507-2003-00 (12)
4 Fluid End Stud 20 7507-2101-00
5 Fluid End Stud 24 7507-2102-00
6 Suction Manifold Assembly 1 6397-0511-00
7 Suction Manifold Gasket 4 7602-160065 ARP 568-444
8A Discharge Manifold Assembly, See PA-51-5 1 6397-0510-10
9 Discharge Manifold Gasket, ARP 568-347 2 7602-160028
10 Discharge Manifold Bolt 8 7501-2631-00
11 Cylinder Head 2 6397-0764-00
12 Cylinder Liner Cage 2 6397-0779-00
13 Liner Seal 6 6397-0648-00
14 Valve Pot Cover 8 6397-0834-00
15 Valve Pot Cover Gasket 8 6397-0461-00
16 Valve Guide Retainer Bolt 32 7501-0051-00
17 Valve Spring 8 6397-0428-00
18 Valve Guide Retainer 8 6397-0147-00
19 Valve Guide 8 6397-0432-00
20 Valve Pot Bumper 8 6397-0148-00
21 Fluid End Shim Set 2 6397-0519-00
22 Fluid End Shim Set 2 6397-0517-00
23 Ferry Counter-Bor Screw, 1″ x 3″ 28 7601-036013
24 Hex Head Cap Screw 4 7601-033116 7/8″ x 3″
25 Hex Head Cap Screw 4 7601-033116 7/8″ x 3″
26 Hex Nut 7/8″ 8 7601-061016
27 Hex Nut 1-1/4″-8 Hvy 8 7601-063024
28 Hex Nut 20 7601-063020 1″-8 Hvy (12)
29 Hex Nut 20 7601-063024 1-1/4″-8 Hvy
30 Hex Nut 24 7601-063024 1-1/4″-8 Hvy
31 Lock Washer, 7/8″ 8 7601-132019
32 Soft Iron Wire 1/16″
33 Hex Hd Steel Pipe Plug 3/4″ 4 7601-259036
AIR CHAMBER ASSEMBLY
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Air Chamber Body 1 6397-1215-00
2 Manifold Adapter Flange 1 6397-0431-00
3 Stud 8 7507-3404-00
4 Ladish Ring Joint R-37 1 7602-066002
5 1-1/8″ – 7UNC -2B Hvy Hex Nut 8 7601-063025
DISCHARGE MANIFOLDS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1A Screwed Discharge Manifold Assembly 1 6397-0510-10
2A Flgd Discharge Manifold Assembly-5″ Std 1
OR Flgd Discharge Manifold Assembly-6″ 1
3 Discharge Manifold 1 6397-1086-00
4 Strainer Housing 1 6397-0663-00
5 Unibolt Nut Member TC-15 1 7601-255088
6 Unibolt Ring Gasket TC-578 1 7601-255087
7 Discharge Manifold 1
8 Strainer Housing-5″ Flg, Std 1
OR Strainer Housing-6″ Flg 1
9 6″ Grayloc Clamp #49508 1
10 6″ Grayloc Seal Ring #50598 1
11 R.J. Gasket, R-39, See Note 1
12A Disch, Manifold Strainer Assembly 1 6397-0290-00
13 Strainer Cap 1 6397-0291-00
14 Strainer 1 6397-0293-01
15 Strainer Gasket ARP 568-439 (See Note) 1 7602-160040
R1 Stud – 5″ Flg 8
OR Stud – 6″ Flg 12
R2 Heavy Hex Nut, 1-1/2″ – 8, 5″ Flg 8
OR Heavy Hex Nut, 1-3/8″ – 8, 6″ Flg 12
R3 R.J. Gasket, R-44, 5″ Flg (See Note) 1
OR R.J. Gasket, R-46, 6″ Flg (See Note) 1
R4 Unibolt Coupling #1669 1 7601-255076
STUFFING BOX ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Diaphragm Stuffing Box Assembly 2 6397-0550-00
2 Diaphragm Stuffing Box 2 6397-0560-00
3 Diaphragm Stuffing Box Retainer 2 6397-0561-00
4 Diaphragm Stuffing Box Gasket 2 7502-0588-00
5 Diaphragm Stuffing Box Spacer Spring 2 6397-0564-00
6 Diaphragm Stuffing Box Lock Spring 2 6397-0565-00
7 Diaphragm Stuffing Box Oil Seal 4 6305-0071-00
8 Fluid Baffle 2 6397-0094-01
9 Fluid Stuffing Box 2 6397-0254-01
10 Fluid Stuffing Box Gland 2 6397-0256-00
11 Fluid Stuffing Box Gland Bushing 2 6397-0089-00
12 Fluid Stuffing Box Packing 2 6397-0743-00
13 Fluid Stuffing Box Junk Ring 2 6397-0255-00
14 Fluid Stuffing Box Gasket 2 7602-160034 ARP 568-430
15 #6-203 Hose Assembly 2 7503-0190-30
16 O – Ring 2 7602-160033 ARP 568-429
17 O – Ring 2 7602-161020 ARP 568-259

19 Hex Hd Cap Screw, 1/2″ x 1-1/2″ 12 —
20 Hex Hd Cap Screw, 3/8″ x 2-1/4″ 12 7601-033035
21 Hex Hd Cap Screw, 3/8″ x 1″ 8 7601-033030
22 3/8″ Internal Tooth Lock Washer, Type B 12 7601-137007
23 Lock Washer 12 7601-132014 3/8″ ( 8 Reqd )
CROSSHEAD ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Crosshead 2 6397-0499-00
2 Crosshead Pin 2 6397-0236-00
3 Crosshead Pin Retainer 2 6397-0507-00
4 Crosshead Pin Retainer Bolt 7501-1250-00 (12)
7 Crosshead Bearing 2 6397-0237-00
8 Crosshead Guide 2 6397-0476-00
9 Crosshead Guide Extension 2 6397-0508-00
10 Crosshead Guide Seal 2 6397-0490-00
11 Crosshead Guide Frame Seal 2 6397-0525-00
12 Crosshead Extension 2 6397-0506-00
13 Crosshead Door, C-E 2 6397-0514-00
or Crosshead Door, Mid-Co 2 6305-0072-00
14 Crosshead Door Gasket 2 7502-0123-00
15 #10-225 Hose Assembly 2 7503-0090-50
or Copper Tubing As sembly 2 —
16 Hex Head Cap Screw 1/2″ X 1″ ( 24 )
7601-033049
17 Hex Head Cap Screw 12 1/2″ X 5-1/2″
7601-033063
18 Socket Head Cap Screw 1-1/4″ X 5″ ( 20 )
7601-034078
19 SAE Plain Washer 7601-140001 ( 24 )

R2 Hex Head Cap Screw, 1/2″ x 1″ 1 7601-033049
BCCENTRIC ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Main Bearing Carrier 1 6397-0776-01
2 Main Bearing Carrier 1 6397-0776-00
3 Main Bearing Cap, C-E 2 6397-0488-10
or Main Bearing Cap, Min-Co. 2 6305-0064-10
4 Main Bearing Cap, Gasket 2 7502-0646-00
5 Main Bearing Retainer Bolt 12 7501-0038-00
6 Main Bearing Retainer Bolt 6 7501-0033-00
7 Main Bearing Retainer-Inner 2 6397-0477-00
8 Main Bearing Retainer-Outer 2 6397-0699-00
9 Main Bearing Carrler Bolt 4 7501-2627-00
10 Shim Bet 4 7502-0300-00
11 Eccentric Bearing 2 6397-0257-00
12 Eccentric Btrap 2 6397-0500-00
13 Eccentric Bearing Retainer – Outer 2 6397-0290-00
14 Eccentric Bearing Retainer – Inner 6 7304-0015-00
15 Bccentric Bearing Retainer Bolt 6 7301-0056-00
16 Eccentric Bearing Retainer Bolt 16 7501-1251-00 ( 24 )
17 Eccentric Bear Ring 1 6397-0505-01
18 Eccentric Bear Hub 1 6397-0503-00
19 Eccentric Bear and Hub 1 —
20 Eccentric Bear Bolt – 7601-033501 1″ X 4-1/2″ ( 12 )
21 2 7602-020015 122240-C
22 Hex Head Cap Screw 12 7601-033096 3/4″ X 1-3/4″
23 12 7601-133006 13/16″ X 1-1/2″
24 Socket Hd Cap Screw, 1/2″ x 5/8″ 2 —
25 – 7601-022017 1″ ( 24 )
49- ? -168
27 Soft lron Wire – 16 On.
28 Soft lron Wire – 11 On.
R1 Main Bearing 2 6397-0479-00

EMSCO DA-700 DUPLEX MUD PUMP

FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Fluid End, R.H. – Studded 1 6397-0629-00
2 Fluid End, L.H. – Studded 1 6397-0628-00
3 Fluid End Stud 20 7507-3403-00
4 Fluid End Stud 20 7507-2201-00
5 Fluid End Stud 24 7507-2201-00
6 Suction Manifold Assembly 1 6397-0624-00
7 Suction Manifold Gasket 4 7602-160065 ARP 568-446
8A Discharge Manifold Assembly, See PA-51-5 1 6397-0510-10
9 Discharge Manifold Gasket, ARP 568-347 2 7602-160028
10 Discharge Manifold Bolt 8 7501-2631-00
11 Cylinder Head 2 6397-0377-00
12 Cylinder Liner Cage 2 6397-0362-00
13 Liner Seal 6 6397-0644-00
14 Valve Pot Cover 8 6397-0292-00
15 Valve Pot Cover Gasket 8 6397-0449-00
16 Valve Guide Retainer Bolt 32 7501-0051-00
17 Valve Spring 8 6397-0427-00
18 Valve Guide Retainer 8 6397-0289-00
19 Valve Guide 8 6397-0429-00
20 Valve Pot Bumper 8 6397-0148-00
21 Fluid End Shim Set 2 6397-0519-00
22 Fluid End Shim Set 2 6397-0517-00
23 Ferry Counter-Bor Screw, 1″ x 3″ 28 7601-036013
24 Hex Head Cap Screw 4 7601-033115 7/8″ x 2-3/4″
25 Hex Head Cap Screw 4 7601-033117 7/8″ x 3-1/4″
26 Hex Nut 7/8″ 8 7601-061016
27 Hex Nut 1-1/4″-8 Hvy 8 7601-063024
28 Hex Nut 20 7601-063026 1-1/8″-8 Hvy
29 Hex Nut 20 7601-063017 1-1/2″-8 Hvy
30 Hex Nut 24 7601-063017 1-1/2″-8 Hvy
31 Lock Washer, 7/8″ 8 7601-132019
32 Soft Iron Wire 1/16″
33 Hex Hd Steel Pipe Plug 3/4″ 4 7601-259036
DISCHARGE MANIFOLDS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1A Screwed Discharge Manifold Assembly 1 6397-0510-10
2A Flgd Discharge Manifold Assembly-5″ Std 1
OR Flgd Discharge Manifold Assembly-6″ 1
3 Discharge Manifold 1 6397-1086-00
4 Strainer Housing 1 6397-0663-00
5 Unibolt Nut Member TC-15 1 7601-255088
6 Unibolt Ring Gasket TC-578 1 7601-255087
7 Discharge Manifold 1
8 Strainer Housing-5″ Flg, Std 1
OR Strainer Housing-6″ Flg 1
9 6″ Grayloc Clamp #49508 1
10 6″ Grayloc Seal Ring #50598 1
11 R.J. Gasket, R-39, See Note 1
12A Disch, Manifold Strainer Assembly 1 6397-0290-00
13 Strainer Cap 1 6397-0291-00
14 Strainer 1 6397-0293-01
15 Strainer Gasket ARP 568-439 (See Note) 1 7602-160040
R1 Stud – 5″ Flg 8
OR Stud – 6″ Flg 12
R2 Heavy Hex Nut, 1-1/2″ – 8, 5″ Flg 8
OR Heavy Hex Nut, 1-3/8″ – 8, 6″ Flg 12
R3 R.J. Gasket, R-44, 5″ Flg (See Note) 1
OR R.J. Gasket, R-46, 6″ Flg (See Note) 1
R4 Unibolt Coupling #1669 1 7601-255076

EMSCO DB-700 DUPLEX MUD PUMP

FLUID END ASSEMBLIES
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1 Fluid End, R.H. – Studded 1 6397-0804-00
2 Fluid End, L.H. – Studded 1 6397-0803-00
3 Fluid End Stud 20 7507-3403-00
4 Fluid End Stud 20 7507-2201-00
5 Fluid End Stud 24 7507-2102-00
6 Suction Manifold Assembly 1 6397-0624-00
7 Suction Manifold Gasket 4 7602-160065 ARP 568-446
8A Discharge Manifold Assembly, See PA-51-5 1 6397-0510-10
9 Discharge Manifold Gasket, ARP 568-347 2 7602-160028
10 Discharge Manifold Bolt 8 7501-2631-00
11 Cylinder Head 2 6397-0764-00
12 Cylinder Liner Cage 2 6397-0424-00
13 Liner Seal 6 6397-0648-00
14 Valve Pot Cover 8 6397-0834-00
15 Valve Pot Cover Gasket 8 6397-0461-00
16 Valve Guide Retainer Bolt 32 7501-0051-00
17 Valve Spring 8 6397-0428-00
18 Valve Guide Retainer 8 6397-0147-00
19 Valve Guide 8 6397-0432-00
20 Valve Pot Bumper 8 6397-0148-00
21 Fluid End Shim Set 2 6397-0519-00
22 Fluid End Shim Set 2 6397-0517-00
23 Ferry Counter-Bor Screw, 1″ x 3″ 28 7601-036013
24 Hex Head Cap Screw 4 7601-033115 7/8″ x 2-3/4″
25 Hex Head Cap Screw 4 7601-033117 7/8″ x 3-1/4″
26 Hex Nut 7/8″ 8 7601-061016
27 Hex Nut 1-1/4″-8 Hvy 8 7601-063024
28 Hex Nut 20 7601-063026 1-1/8″-8 Hvy
29 Hex Nut 20 7601-063017 1-1/2″-8 Hvy
30 Hex Nut 24 7601-063024 1-1/4″-8 Hvy
31 Lock Washer, 7/8″ 8 7601-132019
32 Soft Iron Wire 1/16″
33 Hex Hd Steel Pipe Plug 3/4″ 4 7601-259036
DISCHARGE MANIFOLDS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1A Screwed Discharge Manifold Assembly 1 6397-0510-10
2A Flgd Discharge Manifold Assembly-5″ Std 1
OR Flgd Discharge Manifold Assembly-6″ 1
3 Discharge Manifold 1 6397-1086-00
4 Strainer Housing 1 6397-0663-00
5 Unibolt Nut Member TC-15 1 7601-255088
6 Unibolt Ring Gasket TC-578 1 7601-255087
7 Discharge Manifold 1
8 Strainer Housing-5″ Flg, Std 1
OR Strainer Housing-6″ Flg 1
9 6″ Grayloc Clamp #49508 1
10 6″ Grayloc Seal Ring #50598 1
11 R.J. Gasket, R-39, See Note 1
12A Disch, Manifold Strainer Assembly 1 6397-0290-00
13 Strainer Cap 1 6397-0291-00
14 Strainer 1 6397-0293-01
15 Strainer Gasket ARP 568-439 (See Note) 1 7602-160040
R1 Stud – 5″ Flg 8
OR Stud – 6″ Flg 12
R2 Heavy Hex Nut, 1-1/2″ – 8, 5″ Flg 8
OR Heavy Hex Nut, 1-3/8″ – 8, 6″ Flg 12
R3 R.J. Gasket, R-44, 5″ Flg (See Note) 1
OR R.J. Gasket, R-46, 6″ Flg (See Note) 1
R4 Unibolt Coupling #1669 1 7601-255076

EMSCO DA-850 DUPLEX MUD PUMP

DISCHARGE MANIFOLDS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1A Screwed Discharge Manifold Assembly 1 6397-0295-10
2A Flgd Discharge Manifold Assembly-5″ Std 1 6397-1152-10
OR Flgd Discharge Manifold Assembly-6″ 1 6397-1152-00
3 Discharge Manifold 1 6397-0647-00
4 Strainer Housing 1 6397-0663-00
5 Unibolt Nut Member TC-15 1 7601-255088
6 Unibolt Ring Gasket TC-578 1 7601-255087
7 Discharge Manifold 1 6397-1152-01
8 Strainer Housing-5″ Flg, Std 1 6397-1152-16
OR Strainer Housing-6″ Flg 1 6397-1152-06
9 6″ Grayloc Clamp #49508 1 7601-255081
10 6″ Grayloc Seal Ring #50598 1 7601-255082
11 R.J. Gasket, R-39, See Note 1 7602-066003
12A Disch, Manifold Strainer Assembly 1 6397-0290-00
13 Strainer Cap 1 6397-0291-00
14 Strainer 1 6397-0293-01
15 Strainer Gasket ARP 568-439 (See Note) 1 7602-160040
R1 Stud – 5″ Flg 8 7507-2201-00
OR Stud – 6″ Flg 12 7507-2743-00
R2 Heavy Hex Nut, 1-1/2″ – 8, 5″ Flg 8 7601-063017
OR Heavy Hex Nut, 1-3/8″ – 8, 6″ Flg 12 7601-063028
R3 R.J. Gasket, R-44, 5″ Flg (See Note) 1 7602-066111
OR R.J. Gasket, R-46, 6″ Flg (See Note) 1 7602-066005
R4 Unibolt Coupling #1669 1 7601-255076

EMSCO DC-1000 DUPLEX MUD PUMP

EMSCO D-1350 DUPLEX MUD PUMP

DISCHARGE MANIFOLDS
ITEM NO. DESCRIPTION NO. REQD. PART NO.
1A Screwed Discharge Manifold Assembly 1 6301-0011-00
2A Flgd Discharge Manifold Assembly-5″ Std 1 6397-1117-10
OR Flgd Discharge Manifold Assembly-6″ 1 6397-1117-10
3 Discharge Manifold 1 6301-0102-00
4 Strainer Housing 1 6397-0663-00
5 Unibolt Nut Member TC-15 1 7601-255088
6 Unibolt Ring Gasket TC-578 1 7601-255087
7 Discharge Manifold 1 6397-1117-01
8 Strainer Housing-5″ Flg, Std 1 6397-1117-16
OR Strainer Housing-6″ Flg 1 6397-1117-06
9 6″ Grayloc Clamp #49508 1 7601-255081
10 6″ Grayloc Seal Ring #50598 1 7601-255082
11 R.J. Gasket, R-39, See Note 1 7602-066003
12A Disch, Manifold Strainer Assembly 1 6397-0290-00
13 Strainer Cap 1 6397-0291-00
14 Strainer 1 6397-0293-01
15 Strainer Gasket ARP 568-439 (See Note) 1 7602-160040
R1 Stud – 5″ Flg 8 7507-2201-00
OR Stud – 6″ Flg 12 7507-2743-00
R2 Heavy Hex Nut, 1-1/2″ – 8, 5″ Flg 8 7601-063017
OR Heavy Hex Nut, 1-3/8″ – 8, 6″ Flg 12 7602-063028
R3 R.J. Gasket, R-44, 5″ Flg (See Note) 1 7602-066111
OR R.J. Gasket, R-46, 6″ Flg (See Note) 1 7602-066005
R4 Unibolt Coupling #1669 1 7601-255076

EMSCO DC-1650 DUPLEX MUD PUMP