9.Carefully guide the intake valve housing (28) up over the priming rod (32) and install it on the cylinder (39). Insert the four tie bolts (8) through the outlet housing
(26)and engage the holes in the intake valve hous- ing. Torque the tie bolts oppositely and evenly to 60
10.Install the plate guide (31), plate (36), priming piston
(37)and nut (6) on the priming rod (32). If necessary, push down on the displacement rod (18) to provide sufficient clearance from the intake valve housing
11.Tighten the packing
12.Check the alignment of the displacement rod (18) by inserting a size E (0.254 in. diameter) drill shank be- tween the packing
rod, tighten the tie bolt (8) on the side which is bind- ing.
13.Screw the connecting rod (53) into the upper cap (33). Insert the cotter pin (42) and tighten the locknut
(45).
14.Align the pump outlet on the outlet housing (26) with the optional outlet at the base of the air motor (1). Loosely screw the tie rod locknuts (44) onto the tie rods (52). Lubricate the
15.Start the pump and run it slowly to check for binding. Adjust the tie rods as necessary , then torque the locknuts (44) to
16. Reconnect the fluid and air lines. Reconnect the ground wire if it was disconnected during service.
DISPLACEMENT PUMP 204–641
REF. NO. 2
DISPLACEMENT 41
PUMP INCLUDES
ITEMS
52
42
4
20
44 
TORQUE TO
*15 
34
38 
7 
29
50
53
45
33
21 18
66 26
8
TORQUE TO
60
SEE DETAIL A
27*
17*
19
SEE DETAIL B
DETAIL A
21 | 18 | |
REF | ||
REF | ||
| ||
LIPS OF | 64* | |
THROAT | ||
MUST | ||
GLAND/ | ||
FACE | ||
PACKING | ||
DOWN | ||
STACK | ||
| ||
26 |
| |
REF |
| |
DETAIL B |
| |
*56 |
| |
LIPS OF |
| |
PACKING |
| |
MUST |
| |
FACE UP |
| |
*35 |
| |
38 |
| |
REF |
|
*27
11 32
31 
28
Fig 2 | 37 | 6 |
|
|
39
28
3
SEE DETAIL C
30
36
DETAIL C
11 REF
*65
INTAKE
VALVE
GLAND/
PACKING
STACK
3 REF
LIPS OF
