Repair
3A3442B 9
Repair Air Motor
NOTE: Complete Air Motor Replacement Kits are avail-
able. See page 16.
NOTE: Bottom Cover Kits are available. See page 16.
NOTE: Air Motor Piston Kits are available. See page 16.
NOTE: Air Motor Seal Kits are available. See page 16.
NOTE: Air Motor Seal Kits are available. See page 13
for the correct kit for your motor. For best results, use all
the parts in the kit.
Disassemble the Air Motor
1. Shut off air to the motor and relieve pressure.
2. See F
IG. 5. 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). On 3.5 in. motors only, remove the plug (231)
and o-ring (230).
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.
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