Repair - Pneumatic Motor
20
3A6831G
Repair - Pneumatic Motor
Pneumatic Valve
Replace Complete Pneumatic Valve
1.
Stop the pump. Follow
page 12.
2.
Disconnect the pneumatic line to the motor.
3.
See the figure on page 32. Remove four screws
(218). Remove the pneumatic valve (217) and gas-
ket (216*
).
4.
To repair the pneumatic valve, go to
Disassemble
the Pneumatic Valve,
page 20. To install a replace-
ment pneumatic valve (217), continue with step 5.
5.
Align the new pneumatic valve gasket (216*
) on
the manifold, then attach the pneumatic valve (217).
Torque screws (218) to 95-105 in-lb (11-12 N•m).
6.
Reconnect the pneumatic line to the motor.
Replace Seals or Rebuild Pneumatic Valve
Inspect and replace seals and worn parts while disas-
sembling and reassembling the pneumatic valve on the
next following pages.
Use F
IG
. 12 and the following table to identify the kits
needed for replacements:
Disassemble the Pneumatic Valve
1.
Perform steps 1-3 under
Replace Complete Pneu-
matic Valve,
page 20.
2.
See F
IG
. 12. Use a 2 mm or 5/64 in. hex key to
remove two screws (309†
). Remove the valve
plate (305
), cup (312
), and spring (311
).
3.
See F
IG
. 12. Remove the snap ring (310
) from
each end. Use the piston to push the end caps
(307
) out of the ends. Remove end cap o-rings
(306†
).
4.
Remove the piston (302
). Remove the u-cup seals
(308†
) from each end, and the detent assembly
(303
) and detent cam (304
) from the center.
Symbol Kit Description
†
Pneumatic Valve Seal Kits. See page 35
Pneumatic Valve Repair Kits. See page 35.
Pneumatic Valve End Cap Kits. See
page 35.
