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Displacement Pump Replacement
16 309674M
Installation
1. Extend pump piston rod full. Apply grease to top of
pump rod at (A) or inside connecting rod (43). Install
jam nut (29) on pump threads.
2. Install pump rod (A) into connecting rod (43).
3. Install pump pin (32). Slide retainer spring (31)
down into groove over pump pin.
4. Push pump (41) up until pump threads engage.
5. Screw in pump until threads are flush with top of
drive housing opening.
6. Align pump outlet to back.
7. Turn jam nut (29) counter-clockwise until it stops.
Tighten jam nut by hand, then tap 1/8 to 1/4 turn
with a 20 oz (maximum) hammer to approximately
75 ft-lb (102 N•m).
8. Install suction tube (60) and high pressure hose
(45). Tighten fittings.
.
9. Fill packing nut with Graco TSL until fluid flows onto
top of seal.
10. (Style A) Rotate cover (70). Tighten screws (12).
(Style B) Replace cover (70) over screws. Push
cover down into place. Tighten screws (12).
WARNING
If pump pin works loose, parts could break off due to
force of pumping action. Parts could project through
air and result in serious injury or property damage.
CAUTION
If the pump jam nut loosens during operation, the
threads of the drive housing will be damaged.
WLD
A
TIA
43
A
29
32
31
WLD
29
60
45
WLD
12
70