Rear Axle and Suspension Preventive Maintenance
– 214 – Y53-6008
Medium Duty (R10/06)
• No initial drain is required on Eaton axles that are factory
filled with an Eaton-approved synthetic lubricant.
• Petroleum-based lubricants must be drained within the
first 5,000 miles (8000 km) if converting to an approved
synthetic lubricant.
See Table 2, “Recommended Maintenance Intervals,” Page
120 for standard rear axle service intervals.
• Use petroleum-based lubricants meeting MIL–L–2105–
C/D grade specifications or approved synthetic lubrica-
tion. Do not use oil additives.
To change axle lubricant:
1. Park the vehicle on level ground with the axle lubricant at
normal operating temperature.
2. Remove filler (1) and drain plug (2).
3. Completely drain the oil and clean the drain plug.
CAUTION: Do not overfill axles.
4. Reinstall the drain plug (2) and refill with recommended
oil up to the bottom of filler plug hole.
5. Reinstall filler plug (1).
Table 12 Drive Axle Lubrication
MODEL RECOMMENDED LUBRICANTS
AMBIENT TEMPERATURE RANGE
VISCOSITY (SAE)
° C ° F
EATON,
ROCKWELL
EP gear oil, MIL-L-2105D, API GL-5. -26 to +38 -15 to +100 80W-90
Synthetic Lubricant: Chevron RPM
Synthetic Gear Lubricant, or equal, meeting
MIL-L-2105D and Eaton PS-037 specifica-
tion.
-40 to +38 -40 to +100 75W-90
