GEAR LEG ASSEMBLY REPAIR (EARLY MODEL)
Dry cleaning solvent, P-D-680,
is toxic and flammable.
Always wear protective goggles
and gloves, and use only in a well-ventilated
area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat.
flash point is 100°F-138°F
If you become
using cleaning solvent, Immediately
get fresh air and medical help. if solvent contacts
wash your eyes and get medical aid.
Clean all parts with dry cleaning
solvent and dry thoroughly.
Inspect screw leg assembly
wear, or corrosion.
Inspect roller bearings for pits, corrosion,
or wear and replace if unserviceable
(Refer to TM 9-214
for care and
Inspect bevel gears for cracked,
or worn gear teeth.
Inspect drive shaft and intermediate
drive shaft for cracks, bends,
surface of leveling gib on lower leg assembly
is smooth. If not, remove burrs with fine file and
Inspect all mounting
hardware for cracks,
bends, or stripped threads.
parts as necessary.
Install two sleeve bearings
(10) and new lubrication
fittings (33) in upper leg assembly
Position screw leg assembly
(21) in lower leg assembly
(26) and install nut retainer (20). Secure nut retainer with
two new spring pins (25).
Install thrust washer bearing
(19) and ratchet wheel (18) on screw leg assembly
Control cam is stamped with the letter T on one side to indicate the top. Ensure control
cam is assembled
Install thrust roller bearing
(15) and control cam (16) in clutch case (14) and secure with retaining
Install clutch case (14) on screw leg assembly
Install lower leg assembly
(26) and screw leg assembly
(21) in upper lieg assembly
(34), taking care not to
on screw leg assembly.
Install sleeve bearing (13), tapered roller cup (9), tapered cone and rollers (8), machine key (5), and bevel gear
(7) on screw lieg assembly
(21) and secure with new self-locking
nut (4) just enough to allow screw leg assembly
(21) to turn freely with a minimum of end