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15.
Remove the air motor from the vise.
Clean the motor mounting threads with
an appropriate solvent, also clean the
threads of the motor mount. Remove
the valve housing assembly and O-ring
from the air motor.
16.
Place a few drops of Loctite #242
sealant on both the external threads of
the air motor and the internal threads
of the mount. Screw the air motor into
the motor mount until fully seated.
Back out the air motor only enough to
align the motor to the mount when
placed into the assembly fixture.
17.
Place the air motor and mount into the
assembly fixture. Make sure the pin
which extends out from the base of the
fixture is properly aligned into the
cavity found in the rear of the motor
mount. Securely clamp the motor in
place.
18.
Using an inch-pounds torque wrench,
install the locking ring to 450-550 in-
lbs. (50-60 Nm) of torque.
19.
Continue to reinstall the O-ring, valve
housing assembly, drive gear, bearing
and lower air motor cover.
20.
The air motor/mount assembly can
now be mounted to the gear housing
assembly.
21. Lift up the cutter blade and install the
small compression spring (84).
AIR MOTOR VALVE
Remove the air valve as follows:
1.
Remove the Truarc ring (4), permitting
removal of the valve sleeve (5), stem
(7), and spring (9).
2.
Clean all parts to be sure any dirt
causing sticking of the valve is
removed.
3.
Replacing the O-rings (6, 8) should
correct any leaking air. Oil lightly and
replace the parts as disassembled.
Remove the pilot valve as follows:
1.
Remove the valve cap (35) using cap
tool (P/N 442449). Lift out the spring
and pull out the pilot valve (33) from
the valve housing (36).
2.
Replace the pilot valve assembly if
necessary, being careful not to cut the
"O" rings. Wipe a small amount of air
line oil on the "O" rings and install the
pilot valve and spring into the housing.
The pilot valve cannot be
disassembled. Replace it as a unit.
3.
Install the valve cap using the cap tool
to 30-40 in-lbs. (3-5Nm) of Torque.
20
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