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AIR MOTOR
This tool is manufactured with one of two
available air motors. Inspect the air motor
housing to determine which specific air
motor instructions to follow. The two
motors available for this tool are part
number 422525 and 423900.
Make sure the air line has been
disconnected from the quick disconnect
plug before attempting the following
procedures. Failure to disconnect the
air may result in personal injury.
1. Remove the valve housing (36) by
removing the three socket head cap
screws (32). Remove the lower cover (31)
by removing the two mounting screws
(37).
2. Swing the valve housing (36) to the side,
being careful not to damage the air lines.
Remove the O-ring (34) from the end of
the air motor housing. Set it to the side
for reuse.
3. Remove the three socket head cap
screws which secure the motor mount to
the gear housing.
A small compression spring (84) is
contained under the cutter blade.
Separate the motor mount from the gear
housing and remove the drive gear and
bearing.
4. Remove the locking ring from the motor
mount. NOTE: The locking ring has left-
hand threads.
NOTE: Use of Assembly Fixture (Part No.
306871) may be useful in removing the
locking ring. This fixture allows the air
motor to be clamped in a secure position
while the locking ring can be removed with
the accompanying special 5/8" hex adapter
(Part No. 422340).
18
NOTE: If disassembling a
tool with the alternate
style locking ring, use
socket adapter Part No.
422341.
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