Replace Pilot Valves; Repair Air Motor - Graco 17P750 Instructions Manual

Parts: Oil Models

Replace Pilot Valves

1. Stop pump. Relieve pressure. See Pressure Relief
Procedure, page 11.
2. Disconnect the air line to the motor.
3. Use a 10 mm wrench to remove the old pilot valves
(213) from the top and bottom covers (see Repair
Air Motor, page 24).
4. Lubricate and install the new pilot valves (213).
Torque to 95-105 in-lb (11-12 N•m).

Repair Air Motor

NOTE:
Complete Air Motor Replacement Kit is available. Order
25D081 (2.5 in. motor).
Air Motor Seal Kits are available. See page 28 for the
correct kit for your motor. Parts included int he kit are
marked with an asterisk (*). For best results, use all of
the parts in the kit.
24
Disassemble the Air Motor (F
1. Remove air motor (1) from pump base (2). See
Remove Air Motor instructions, page 14.
2. Use a 10 mm socket wrench to remove four screws
(211). Remove the air valve (214) and gasket
(209*†).
3. Remove four screws (211) and remove the manifold
(220) and two gaskets (208*).
4. Use a 10 mm socket wrench to remove the pilot
valves (213) from the top and bottom cover.
5. Use a 13 mm socket wrench to remove the tie bolts
(212).
6. Remove the top cover (210). Remove the o-ring
(202*).
7. Remove the shield (206) and cylinder (205).
8. Remove the o-ring (204*) from the piston.
9. Secure the piston (219) in a vise with soft jaws. Use
a wrench on the flats of the rod (218) to remove the
rod and bottom cover assembly (201) from the pis-
ton.
10. Remove the rod from the bottom cover assembly.
11. Remove retaining ring (217), u-cup seals (207*),
and o-ring (202*) from the bottom cover.
. 29)
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3A5266D