Graco 390 253958, Important Safety Instructions Manual

Page: 14 / 32

Displacement Pump Replacement
14 311737B
Displacement Pump Replacement
See manual 309250 for pump repair instructions.
Removal
1. Relieve pressure , page 8. Unplug sprayer from
outlet.
2. Loosen two screws (30) and rotate cover (44).
3. Loosen nut (A) and remove suction hose (35).
Loosen nut (B) and remove the high pressure hose
(14).
4. Cycle pump until pin (32) is in position to be
removed.
5. Disconnect power cord from outlet.
6. Using a flat screwdriver, push retaining spring (C)
up. Push out pump pin (32).
7. Using a hammer, loosen pump jam nut (11).
Unscrew and remove pump (9).
TIA
30
44
14
B
A
35
ti6105b
TIA
C
32
11
11
9
ti6107b