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Installation
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.
1. Extend pump piston rod fully. Apply grease to top of
pump rod (D). Install jam nut (34) on pump threads.
2. Install pump rod (D) into connecting rod (30).
3. Install pump pin (31). Verify retainer spring (30a) is
in groove over pump pin.
30a
31
33
4. Push pump (33) up until pump threads engage.
311990F
5. Screw in pump until threads are flush with top of
drive housing opening.
6. Align pump outlet (E) to back.
34
30
D
34
7. Screw jam nut (34) up onto pump until nut 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).
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8. Install suction tube (39) and coupled hose (42).
Tighten nuts (37) and (B).
.
30
9. Fill packing nut with Graco TSL until fluid flows onto
top of seal. Install pail hanger (10) with screws (11).
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11
10
Displacement Pump Replacement
E
ti
B
42
37
39
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13
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