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SERVICING THE MACHINE AFTER TRANS-
noted, it will be necessary to remove, disassemble,
and clean the converter thoroughly. It is realized this
entails extra labor, however, such labor is a minor
The transmission, torque converter, and its allied hy-
cost compared to the cost of difficulties which can
draulic system are important links in the drive line
result from the presence of foreign material in the
between the engine and the wheels. The proper op-
eration of either unit depends greatly on the condi-
tion and operation of the other. Therefore. whenever
repair or overhaul of one unit is performed, the bal-
ance of the system must be considered before the job
If the dipstick is not accessible, oil level
can be considered completed.
check plugs are provided.
After the overhauled or repaired transmission has
Assemble all the components and use only the
been installed in the machine, the oil cooler, and
type oil recommended in the lubrication section. Fill
connecting hydraulic system must be thoroughly
the transmission through the filler opening until the
cleaned. This can be accomplished in several manners
fluid comes up to the LOW mark-on transmission
and a degree of judgment must be exercised as to the
Remove the LOWER check plug, and fill until oil runs
The following are considered the minimum steps to
from the LOWER oil hole. Replace the filler and level
Drain the transmission/torque converter sys-
Run the engine two minutes at 500 to 600 rpm to
prime the torque converter and hydraulic lines. Re-
check the level of fluid in the transmission with the
Disconnect and clean all the hydraulic lines.
engine running at idle (500 to 600 rpm).
Where it is feasible, hydraulic lines should be re-
moved from the machine for cleaning.
Add the quantity necessary to bring the fluid level to
the LOW mark on the dipstick or runs freely from the
Replace the converter oil f ilter elements, clean-
LOWER oil level check plug hole. Install the oil level
ing out the filter cases thoroughly.
plug or the dipstick. Recheck with hot oil, 180 to 200
degrees F (82.2 to 93.3 degrees C).
The oil cooler must be thoroughly cleaned. The
cooler should be back flushed with oil and com-
Bring the oil level to the FULL mark on the dipstick or
pressed air until all foreign material has been re-
runs freely from the UPPER oil level plug.
moved. Flushing in the direction of normal oil flow
will not adequately clean the cooler. If necessary, the
Recheck all drain plugs, lines, connections.
cooler assembly should be removed from the ma-
etc., for leaks and tighten where necessary.
chine for cleaning, using oil, compressed air, and a
steam cleaner for that purpose.
TOWING OR PUSH STARTING.
On the remote mounted torque converter, re-
move the drain plug from the torque converter and
Before towing the vehicle, disconnect both front
inspect the interior of the converter housing, gears,
and rear drive lines to avoid damage to crane.
etc. If the presence of considerable foreign material is
Because of the design of the hydrauic system
the engine cannot be started by pushing or by
towing. Refer to TM 5-3810-307-10.