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TM 5-4210-220-34
3-7.
TRANSMISSION - Continued
(21) Position the clutch housing, turbine shaft downward, so the PTO gear is resting on the cylindrical fixture.
Center the fixture directly under the PTO gear.
(22) Center fixture tool J26899-1 inside the forward clutch housing and apply sufficient pressure to the tool to
remove the PTO gear. Remove the snap ring.
Pressure applied directly to the turbine shaft will cause permanent damage.
(23) Do not remove balls (26) from the forward clutch housing unless replacement is necessary.
(24) If the turbine shaft is damaged or loose or the butt-joint seal ring area of the housing requires rework, support
the front of the forward clutch housing in a ten-ton press and remove the turbine shaft.
(25) It is permissible to hard chrome plate the splines of a used shaft (0.001 - 0.002 in. (0.025 - 0.051 mm) thick)
to tighten loose joint on used assembly.
Do not attempt this rework procedure unless adequate machining capabilities are available.
(26) Acceptable wear in the rotating seal bore of the forward (or fourth) clutch housing is normal polishing of the
sealing surfaces by the seals and no greater step wear than 0.0005 in. (0.0127 mm). Replace housing if
worn beyond specification.
NOTE
If the forward clutch housing is replaced, selection of a proper piston (A, B or C) Is imperative before seal
ring installation. If the forward clutch housing is not replaced and a new piston is required, make sure the
identification letter stamped on the new piston is identical to that on the old piston.
(27) Ensure that the shaft is pressed squarely
into the housing assembly to locate the
forward clutch housing assembly center line
square and true with the center line of the
ram.
3-40
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