Eaton EEV-7202, Service Manual, Page: 16 / 63

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Lubrication recommendations
The following is the recommended lubricant.
SAE 50 Eaton PS-164 approved.
Recommended Lubricants
Eaton does not approve mineral oil lubricants by brand name.
Additives or friction modifiers which are not part of the original lubricant are not recommended.
Lubrication Information
Proper lubrication procedures are the key to a good all-around maintenance program.
Eaton Transmissions are designed so that the internal parts operate in an oil circulating bath created by
the motion of the gears and shafts.
All parts will be properly lubricated if these procedures are closely followed:
1. Maintain oil level. Inspect regularly.
2. Follow maintenance interval chart.
3. Use the brand recommended by the truck manufacturer.
Maintain Proper Oil Level
Make sure oil is level with the filler opening. Being able to reach oil with your finger does not mean oil is
at proper level.
Never mix different brand of oils.
Operating Temperature
It is important that the transmission operating temperature does not exceed 120°C (250°F) for an
extended period of time. Operating temperatures above 120°C (250°F) cause breakdown of the oil and
shorten transmission life. The following conditions in any combination can cause operating
temperatures of over 120°C (250°F):
1. Operating consistently at road speeds under 32 km/h (20m.p.h.)
2. High engine RPM
3. High ambient temperature
4. Restricted air flow around transmission
5. Exhaust system too close to transmission
6. High horsepower, over-drive operation
7. High power PTO operation for extensive periods while stationary
High operating temperatures may require more frequent oil change.