RECOMMENDED POWER SHIFT TRANSMISSION &
TORQUE CONVERTER OIL CHANGE
CHECK PERIOD--Check oil level DAILY with engine running at 500-600
RPM and oil at 180 degrees F. to 200 degrees F. Maintain oil level to FULL
DRAIN PERIOD - Transmissions & Converters: Change oil filter element
every 250 hours. Drain and refill system every 500 hours.
(a) Drain transmission and remove sump screen. Clean screen
thoroughly and replace using new gaskets.
(b) Drain oil filters, remove and discard filter elements. Clean filter
shells and install new elements.
Refill transmission to FULL mark.
Run engine at 500-600 RPM to prime converter and lines.
Prevailing Ambient Temperature
(e) Recheck level with engine running at 500-600 RPM and add oil to
bring level to FULL mark. When oil temperature is hot (180 degrees to 200
degrees) make final oil level check.
RECOMMENDED TORQUE CONVERTER OIL CHANGE
(When not used with a Clark Power Shift Transmission)
OIL IN A TORQUE CONVERTER is used primarily as means of
transmitting power as well as providing adequate lubrication. Such oil must
have the following properties:
It must remain fluid at all prevailing temperatures.
It must not foam excessively nor materially increase in volume.
It must be chemically stable at elevated temperatures.
It must be free from additives and impurities which would
IT MUST BE CLEAN. Dirt in the converter hydraulic circuit will
Oil groups 2 & 3 may be used to
cause wear and shorten life. Also it will cause malfunction by damaging the
lower ambient temperatures when
hydraulic pump, pressure regulating valves and oil seals within the unit.
sump preheaters are used.
RECOMMENDED CONVERTER OIL CHANGE - Converter oil should be
Oil group 4 should be used only up
renewed at least every 750 hours operation - more frequently when the unit is
to ambient temperature shown.
subject to dusty or dirty environment.
WHEN DRAINING THE CONVERTER, it is important that all parts of the
*Dexron is a registered trademark of
system be emptied of oil. Drain the converter oil cooler and filter as well as the
General Motors Corporation.
sump. Some units provide drain plugs in the converter impeller. Remove these
plugs and rotate the converter so that one hole is at the bottom. This will allow
the oil inside the elements to drain.
DO NOT USE FLUSHING OIL. Some units cannot be completely
drained and a considerable amount of oil remains trapped in the converter
elements. Entrapped flushing oil will contaminate
WHEN REFILLING cleanliness is extremely important. Use clean
containers. Fill the sump to the full mark on the dipstick with the recommended
oil. Start and operate the converter at slow speed and continue to fill until the
oil remains at the full mark on the dipstick. Converter oil level is always
measured with the converter in operation at engine idle.
INSPECTION of oil level should be made every shift or daily. Always
clean around inspection plug before inspection. Add sufficient oil to maintain