Air Motor Repair
3A9121A
31
6. Slide the piston assembly (10) down into the
cylinder (14). Be sure the o-ring (13) stays in place.
Work it carefully into the groove.
7. Lubricate and install the o-ring (6) on the top cover
(22).
8. Carefully place the top cover (22) on the cylinder
(14) and muffler (17). The flat vertical manifold
surfaces of the top and bottom covers must align.
Be sure the muffler (17) is in the groove on both the
top and bottom covers.
9. Install two gaskets (24) and screws (27) halfway
onto manifold (25).
10. Install bolts (31) halfway onto cover (1).
11. Torque screws (27) to 120 in-lb (13.6 N•m).
12. Torque cover bolts (31) evenly in a criss-cross
pattern to 40 ft-lb (54.2 13.6 N•m).
13. Reconnect the pilot valve air lines (37) to air valve
(30) and poppet valves (62).
Piston Seal Replacement
Removal
Refer to the illustration on the following page for the
instructions below.
2. Disconnect the air intake hose (AH) to the motor.
3. Loosen fitting connecting regulator assembly to air
valve (30).
4. Remove pump guard (PG) and coupling (CP).
5. Remove pilot lines (37, 38).
ti32174a
14
17
31
22
6