TM 55-1730-229-34
AG 320A0-MME-000
TO 35C2-3-473-2
TM 1730-34/1
bushing (22) over the end of the differ-
(3) Check the drive engage spring
ential drive shaft so that it Is against
Correct
(21) for cracks or nicks.
the shaft hex hut.
If old
spring length is two inches.
spring is shorter or damaged, replace
(2) Position the drive engage
spring.
spring (21) inside the shifter cup (27)
and carefully install the shifter cup
(4) Check the clutch housing (12)
ever the shifter hub (20). Make certain
for damage. Check switch housing cast-
that the drive spring Is centered inside
ing for bends or cracks. Mating surface
the shifter cup during the assembly.
of housing should be flat and true.
Maintain pressure on the shifter cup
Minor housing damaged may be repaired
with one hand while inserting the set
with a fine file and stone. Major dam-
screws (19) through the shifter cup with
age will require housing replacement.
the other hand. Turn the set screws In
Check push rod (16) operation.
Rod
until hand-tight. Place a jam nut (18)
should slide easily through the push rod
on each set screw and tighten.
hole.
The packing groove should be
Replace push rod
clean and undamaged.
(3) Lightly lubricate a new push
if damaged. Scratches on galling Inside
rod (16) packing (24). Insert the push
the push rod hole may be repaired by
rod into the clutch housing mounting
polishing the hole with a rolled up
hole. Place a new gasket (17) against
piece of fine emery paper.
the clutch housing q ating surface.
Place the housing (12) in position
(5) Inspect the clutch lever (6)
against the chain case housing (5) and
and Its mounting hardware for physical
secure it with seven bolts (13), flat
damage. Lever should be free of dents,
washers (14), and lockwashers (15).
The pivot hole and
chips, and bends.
mounting hardware should allow smooth
(4) Install the engaged/disengaged
operation when the lever is moved back
microswitch (7) to the clutch housing
and forth from the engaged and disen-
(12) with two small phillips head screws
gaged positions.
The turnbuckle as-
(8), spacers (9), flat washers (10) and
sembly should operate freely with no
nuts (11). Secure microswitch lead by
binding or catching. The threads should
installing loop clamp.
be clean and free from damage. Replace
(5) Swing the clutch lever (6)
any damaged turnbuckle components. In-
back into its normal operating posi-
spect the clutch lever locking pin (28)
tion and place the mounting bracket (4)
for proper operation.
The top-mounted
against the chain case.
Secure the
pushbutton should operate smoothly and
bracket with two bolts (l), flat washers
release the pin retainers completely.
(2) and lockwashers (3).
Replace the pin if defective.
Check
microswitch (7) operation with an ohm-
meter.
Replace the switch if faulty.
(6) Adjust Push/Pull Clutch Lever (6)
Inspect switch housing for cracks and
by turning Jam Nut (25) counterclockwise to
other damage.
Replace switch if dam-
loosen, then turn turnbuckle (26) clockwise
aged.
until there is 1/4 inch clearance between
clutch lever (6) and clutch housing (12).
Install.
(See figure 10-12.)
d.
Tighten jam nut (25) by turning clockwise and
torque to 10 foot pounds. If a clicking noise is
(1) Place the shifter hub (20)
heard during testing of the drive system,
over the driven sleeve (23) so that the
loosen jam nut (25) and adjust clutch turn-
Press in on the hub
gear teeth mesh.
buckle counterclockwise until there is no
clicking noise. Tighten and retorque jam nut
until the hub gears disengage from the
(25) to 10 foot pounds.
driven sleeve gears. Install the spring
Change 2
10-21
