Repair; Pump Assembly - Graco XP-H Series Operation, Repair, And Parts

Repair

Repair
To avoid serious injury due to the pump assembly
falling, secure a hoist to the lift ring.
Follow Shutdown procedure on page 42, which
includes flushing, if service time may exceed pot life
time, before servicing fluid components, and before
transporting system to a service area.

Pump Assembly

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.
Remove Pump Assembly
1. Stop the pumps near the bottom of their stroke.
Follow Park and Shutdown procedures, page 42.
2. Follow Pressure Relief Procedure, page 30.
3. Disconnect all hoses from the pump assembly.
4. If hoppers are installed, disconnect the hopper from
the pump inlet. See Hoppers, page 53.
NOTE: The hopper and hopper bracket do not need
to be removed from the cart.
5. If feed pumps are installed, close the inlet ball valve.
Remove inlet union (61).
6. Remove screws (6) and washers (5) under the tie
plate (901).
7. Use hoist to remove the pump assembly by the lift
ring and carefully lift out of cart (1).
Remove Displacement Pump
1. Stop the pumps near the bottom of their stroke.
Follow Park and Shutdown procedures, page 42.
2. Follow Pressure Relief Procedure, page 30.
48
3. If hoppers are installed, remove the hopper and
hopper bracket from the cart. See Hoppers, page
53.
4. If feed pumps are installed, close the inlet ball valve.
Remove inlet union (61).
5. Remove the spring clamp (930) and coupling (919,
920).
935
919
917
908
6. Use a wrench to hold the tie rod (905, 906) 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).
7. Refer to your Xtreme pump manual to service or
repair the displacement pump.
8. Follow the steps in reverse order to reinstall the
displacement pump.
9. Torque nuts (908) to 50-60 ft-lb (68-81 N•m).
NOTE: The hopper and hopper bracket do not need to be
removed from the cart.
906
905
930
920
918
3A0420ZAF