DRAIN PERIOD

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

mark.

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.

RECOMMENDED LUBRICANTS FOR CLARK POWER SHIFTED

(c)

Refill transmission to FULL mark.

TRANSMISSION

AND TORQUE CONVERTERS

(d)

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

centrifuge out during operation.

NOTE:

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

the refill.

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

correct level.