outer left and right sides of the case. When servicing or removing the gearshift fork assembly, be extremely careful not to
drop tools, lockwashers, or screws into the transmission case. Use clean tools and do not allow dirt or dust to enter into
the bearings or gears. Make sure that hands and rags are free of dust and grit. Always cover the transmission case with a
clean cloth when the transmission case cover is removed.
b. Removal.
(1) Remove the transmission case cover (par. 202a).
(2) Slowly unscrew the pipe cap (11), being careful not to lose the lock spring (13) located inside the pipe nipple
(12).
(3) Remove the lock spring (13) from the pipe nipple (12).
(4) Use a pipe wrench to unscrew the pipe nipple (12).
(5) Remove the steel ball (14).
(6) Unscrew and remove the bearing retainer screws (1) and lockwashers (2) on the left and right sides of the
transmission case.
(7) Remove the left (3) and right (10) bearings.
(8) Remove and discard the gaskets (4).
(9) Lift up and remove the gear shifter shaft (5), yoke (7), and gear shifting crank (8) from the transmission case
(9).
(10) Drive out the shaft pin (6) and remove the yoke (7) from the gear shifter shaft (5).
(11) Inspect the bearings (3) and (10) in the bearing retainers. If the bearings are worn, scored, or damaged,
press or drive them out from the retainers.
c. Cleaning. Wash all parts in cleaning solvent and dry them with a clean absorbent cloth or compressed air. Use a
wire brush to clean the threads of the mounting screws and pipe nipples. Remove all grease, dirt, and sludge from the
bearing retainers. Clean the bearing mounting holes in the transmission case with cleaning solvent and remove all rust
and dirt from the machined gasket surfaces.
d. Inspection and Repair.
(1) Inspect the gear shifter shaft for wear, twisting, pitting, etching, and cracks. Replace the shaft if it is
defective.
(2) Inspect the yoke for cracks, breaks, and warpage. Do not attempt to disassemble the yoke by driving out
the rivets. If the yoke is damaged or worn, replace the complete yoke assembly as a unit.
(3) Inspect the gear shifting crank for twisting, wear, cracks, and breaks. Replace the crank if it is twisted,
broken, or cracked.
(4) Check the bearings for wear, pitting, etching, scoring, and damage. Replace defective bearings. Always
replace both
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