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Repair
14 308391J
Displacement Pump
Refer to FIG. 5 for the following instructions.
NOTE: Clean and inspect all parts for wear of damage
as you disassemble them. Replace parts as needed. For
the best results, always replace all the o-rings and pack-
ings when you disassemble the pump.
1. Relieve the pressure, see page 8.
2. Remove the piston (110). Follow steps 1 through 11
of Disassembly (page 11).
3. Carefully inspect the smooth inner surface of the
cylinder (111) for scoring or irregular surfaces. Such
damage causes premature seal wear and leaking.
Replace the parts as needed.
4. Grease the new piston seal and install with the lips
facing up.
5. Reconnect the reciprocator and displacement pump
as described in steps 16 through 26 of Reassembly,
page 12.
FIG. 5
104
112
105
111
107
113
1
108