REPAIR AND REBUILD
Section I. PRELIMINARY INSTRUCTIONS FOR POWER TRAIN OVERHAUL
7 0 . G E N E R AL
a . Provide Proper Equipment. Proper
e q u i p m e n t m u s t b e a v a i l a b l e b e f o r e r e-
build is started. This equipment includes a
h o i s t o f a t l e a s t 2 - t o n c a p a c i t y , a d e-
quate hand tools (par. 62) (and improvised
tools, where available). wood blocks. re-
ceptacles for small parts, lint-free wiping
cloths, oil-soluble grease and nonharden-
ing gasket cement.
Refer to Table II and
par. 62 for listing of special and impro-
White lead is toxic. To avoid injury,
do not use white lead.
Transmission and transmission com-
ponents are heavy and can crush you.
Have a ground guide check slings and
l i f t i n g d e v i c e s f o r c u t s , b r e a k s or
w e a r b e f o r e a n d d u r i n g h o i s t i n g .
Slings and lifting devices can break
and cause injury or death. To avoid
injury, do not stand under transmis-
sion or components when lifting them.
Fumes from burning Teflon can cause
s e r i o u s i n j u r y o r d e a t h .
clutch piston seal rings and step-joint
seal rings are made of Teflon, do not
get rid of them by burning.
b . Parts to Discard. At transmission
assembly, all piston seals, seal rings, pack-
ings, lock washers, lock nuts, cotter pins,
lock wires, lock strips and gaskets should
b e r e m o v e d a n d d i s c a r d e d .
N e w p a r t s
should always be supplied to replace such
c . A v o i d C o m p o n e n t D a m a g e.
care avoid damage to transmission com-
ponents during disassembly, cleaning, in-
s p e c t i o n , r e p a i r a n d r e a s s e m b l y . N i c k s,
scratches and dents resulting from care-
less handling may cause oil leakage or
improper functioning. This could result in
transmission failure. All defective parts
m u s t b e r e p l a c e d .
H a n d l i n g o f h e a vy
components with slings and hooks, and
blocking the transmission for support in
various positions, is important for safety
and to prevent damage.
d. Torque. All plugs, bolts, nuts and
screws must be installed at the prescribed
t i g h t n e s s to
assembly. Proper use of a torque wrench,
and careful attention to prescribed torque,
will help prevent distortion, oil leaks and
stripped threads. All torque requirements
for plugs, bolts, screws and nuts are found
in the pertinent rebuild section and in the
a s s e m b l y s t e p p r o c e d u r e s ( s e c . X X X I I I)
71. CLEANING RECOMMENDATIONS
a . G e n e r a l . C l e a n l i n e s s i s o f p a r a -
mount importance in servicing a transmis-
sion. All components must be thoroughly
cleaned and kept clean throughout the re-
Dirt can cause malfunction
and possible failure of the transmission.
Refer to the Appendix A, Section 4b.
b . Cleaning Parts
Compressed shop air will not exceed
30 psi (pounds per square inch). Regu-
lator assembly must be attached to
compressor. To avoid injury, use only
with effective chip-guarding and per-
sonal protective equipment (goggles/
faceshield, gloves, etc.).
74 Change 2