verse valve spring stop (38). Install forward stop reverse
be accomplished in several manners and a degree of
(32), valve spring (36), and spring stop in housing.
judgment must be exercised as to the method employed.
Secure with retainer ring.
(3) The following are considered the minimum
steps to be taken:
(c) From the opposite end, install forward and reverse
piston (31). Install new O-ring (30) on piston guide (29).
(a) Drain the entire system thoroughly.
Install piston guide (29). Install piston guide in housing
and secure with retainer ring (27). Install selector valve
(b) Disconnect and clean all hydraulic
(20) in housing. Install 3rd speed valve (3) in housing
with slot in valve lined up with stop pin (8). Install stop
lines. Where feasible hydraulic lines should be removed
from machine for cleaning.
pin (5) and pin retainer plug (7). Install cylinder housing
plug (1). Install 2nd speed valve (10) in shift cylinder (4)
(c) Replace oil filter elements, cleaning
with slot in valve lined up with stop pin in cylinder
housing. Install 1st speed valve (11) in housing with slot
out filter cases thoroughly.
in valve lined up with stop pin. Install stop pin (8). Install
(d) The oil cooler must be thoroughly
new O-ring (9, 2) on shift cylinder assembly and end cap
(11). Install selector valve spring (24) in housing and
cleaned. The cooler should be "back flushed" with oil
and compressed air until all foreign material has been
secure with lock plugs (16). Using new control valve to
removed. Flushing in direction of normal oil flow will not
case O-rings and new gasket install control cover valve
assembly on transmission case. Secure with screws and
adequately clean the cooler. If necessary, radiator
should be removed from machine for cleaning, using oil,
lockwasher. Tighten 20-25 ftlb. torque.
compressed air and steam cleaner for that purpose. DO
NOT use flushing compounds for cleaning purposes.
(e) Remove bottom drain cover and
plug from torque converter and inspect interior of
converter housing, gears, etc. (para 5-2). If presence of
considerable foreign material is noted, it will be
necessary that converter be removed, disassembled and
h. Service Machine after Transmission Overhaul.
(f) Reassemble all components and 0
(1) The transmission, torque converter and
its allied hydraulic system are important links in the drive
E 10 engine oil, fill torque converter and transmission
line between the engine and wheels. The proper
through filler opening until fluid comes up to FULL mark
operation of either unit depends greatly on the condition
on transmission dip-stick. Reinstall fill plug and dip-stick
and operation of the other, therefore, whenever repair or
and run engine two minutes at 500-600 rpm to prime
overhaul of one unit is performed, the balance of the
torque converter and hydraulic lines. Recheck level of
system must be considered before the job can be
fluid in transmission with engine running at idle (500600
rpm) and add quantity necessary to bring level up to
FULL mark on dip-stick. Recheck with hot oil (180 to
(2) After the overhauled or repaired
transmission has been installed in the machine, the
torque converter, oil cooler, filter and connecting
connections, etc., for leaks and tighten where necessary.
hydraulic system must be thoroughly cleaned. This can
Section V. CARRIER STEERING ASSEMBLY
5-12. Carrier Steering Column
The carrier is equipped with a mechanical steering
system with hydraulic power assist. Front wheel
steering is operated by the steering wheel. The rear
(1) Remove steering wheel (TM 5-3810232-
wheels are steered hydraulically by a double-acing
cylinder, engaged by a lever in the cab. Hydraulic
pressure for steering is provided by the hydraulic system
(2) Remove steering column at illustrated on