Air Controls - Graco XP-H Series Operation, Repair, And Parts

Remove Motor
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 the air line from the air motor (903).
4. Remove the air motor rod cover (921) and pump
guards (922).
Air Motor shown
5. Use a wrench to hold the tie rod (902) flats to keep
the rods from turning. Unscrew the nuts (908) and
washers (907) from the tie rods.
Air Motor shown
903
902
909
907
908
6. Place a wrench on adapter rod (904). Use tool (69)
to loosen the serrated yoke nut (909) that holds the
air motor (903) above the yoke (911).
7. Face the front of the machine and slide the air motor
(903) to the opening in the yoke (911).
3A0420ZAF
8. Use a hoist to remove the air motor by the lift ring.
9. Refer to the air motor manual to service or repair the
air motor.
10. Follow the steps in reverse order to reinstall the air
motor.
11. Position air motor for correct mix ratio. See Motor
Position on page 25 for instructions. Torque nuts
(908) to 50-60 ft-lb (68-81 N•m).

Air Controls

Follow the Park procedure on page 42 before
performing any repair or replacement.
For XP systems only. See F
921
Replace Air Control Assembly
903
1. Close the main air shutoff valve (MA) on the air
supply line and on the air supply system.
922
Depressurize the air line using the pressure relief
valve (MG).
2. Disconnect the air motor air lines and system air
line.
3. Remove the nut (8) and washer (5). Remove the
bottom air control manifold assembly from the cart.
4. Loosen the upper air control assembly from the air
motor.
5. Follow the steps in reverse order to reinstall the new
air control assembly.
Replace Air Filter Element
1. Close the main air shutoff valve on the air supply
line and on the system. Depressurize the air line.
904
2. Unscrew the serrated ring on filter bowl (210).
3. Remove and replace the filter element (210a). See
Air Controls, 26C417 on page 69.
911
Replace System Air Regulator
1. Close the main air shutoff valve on the air supply
line and on the system.
2. Disconnect air motor air lines and system air line.
3. Remove the regulator assembly (201) and replace
with new regulator. See Air Controls, 26C417 on
page 69.
4. Follow the steps in reverse order to reassemble.
Repair
. 8 on page 50.
IG
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