Graco XP50s-hf, Operation, Repair, And Parts

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Repair
56 3A6283F
Repair
Follow the complete Flushing procedure starting on
page 44, which includes pressure relief and full system
flushing if service time may exceed pot life time before
servicing fluid components and before transporting the
system to a service area.
Pump Assembly Repair
The displacement pumps and air motor may be
removed and serviced separately or the entire pump
and motor assembly can be removed with a hoist.
Pump Assembly Removal
1. Flush all system components. Follow the complete
Flushing procedure starting on page 44.
2. Disconnect all hoses from the pump assembly.
3. Disconnect the hopper fluid lines from the pump
fluid inlet (228).
4. Remove screws (6) and washers (5) under the tie
plate (901). For additional parts identification, see
Parts starting on page 60.
5. Use hoist to remove the pump assembly by the lift
ring and carefully lift out of stand (1).
Remove XP Displacement Pump
1. Flush all system components. Follow the complete
Flushing procedure starting on page 44.
2. Disconnect the hopper fluid lines from the pump
fluid inlet (228).
3. Disconnects the outlet hose (12 or 24). For parts
identification, see Parts starting on page 60.
4. Remove the spring clamp (930) and coupling (919).
5. Use a wrench to hold the tie rod (902) flats to keep
the rods from turning. Unscrew the nuts (908) from
the tie rods and carefully remove the displacement
pump (917 or 918) and lower straps (935).
6. Refer to the Xtreme Displacement Pump manual to
service or repair the displacement pump.
7. Follow the steps in reverse order to reinstall the
displacement pump.
NOTE: Torque nuts (908) to 95-105 ft-lb (129-142 N•m).
To avoid serious injury due to the pump assembly
falling, secure a hoist to the lift ring.
901
WLD
930
919
918
917
908
902
935
901