Displacement Pump Parts
Model 237–255 Displacement Pump, Series A
Stubby
Size, Carbon Steel,
Packed
Ref.
No.
Part No.
Description
Qty.
1
177–152 NUT, packing
1
2*
178–543 GLAND, female; stainless steel
1
3*
172–487 V-PACKING;
3
5*
172–385 GLAND, male; stainless steel
1
6
178–542 HOUSING, outlet
1
7
101–281 FITTING, grease
1
8
104–537 O-RING;
1
13
190–063 CYLINDER
1
14
177–156 O-RING; Viton
1
15
217–189 ROD, displacement
1
16
105–775 NUT, hex; M14 x 1.5
2
17
177–160 ROD, connecting
1
18
177–168 HOUSING, valve, piston
1
19
177–155 VALVE, piston
1
20
172–393 WASHER; stainless steel
1
21*
172–489 CUP, piston;
1
22
177–151 PISTON, pump
1
23
237–493 VALVE, intake
1
26
172–399 PIN, ball stop
1
27
177–230 GUIDE, ball
1
28
104–586 BALL, intake; 32 mm dia.
1
* These parts are included in Repair Kit 213–013,
which may be purchased separately.
04473
1
3
4
2
Torque to 31 N.m (23 ft–lb).
6
1
*5
8
13
23
20
19
18
17
15
14
Lips of v-packings must face down.
7
22
16
*2
3*
*21
Torque to 33 N.m (24 ft–lb).
Lips of packing must face up.
1
4
3
2
27
28
26
PTFE
PTFE
PTFE
PTFE
