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Displacement Pump Replacement
1. Flush pump (13).
WARNING
Page 2
2. Fig. 8. Loosen two screws (10b) and remove
cover (10a).
10a
10b
Fig. 8
CAUTION
If the pump locknut loosens during operation, the
threads of the drive housing will be damaged.
1. Fig. 10. Extend pump piston rod fully. Apply grease
to top of pump rod at (A) or inside connecting rod.
Fig. 10
2. Fig. 8. Install pump pin (9a). Verify retainer spring
(9b) is in groove of pump pin.
3. Push pump up until pump threads engage.
4. Screw in pump until threads are flush with drive
housing opening. Align pump outlet to back.
5. Fig. 9. Install suction tube (78) and hose (19).
20
309860
Removal
ti7239a
Installation
ti7240a
3. Cycle pump until pump pin (9a) is in position to be
removed. Remove pump pin (9a).
4. Fig. 9. Remove suction tube (78) and hose (19).
5. Loosen pump jam nut (12). Unscrew pump.
19
78
Fig. 9
6. Fig. 11. Screw jam nut (12) 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 approxi-
mately 75 +/–5 ft–lb (102 Nm).
Fig. 11
7. Fig. 12. Fill packing nut with Graco TSL until fluid
flows onto top of seal.
ti7243a
Fig. 12
8. Fig. 8. Replace cover (10a); tighten screws (10b).
12
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T
ti7242a
10a
10b
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