Peterbilt Medium Duty Trucks Operator's Manual after 1-07

Preventive Maintenance
Transmission and Clutch
Table 10 Transmission Lubrication — Manual transmissions
MODEL
RECOMMENDED
LUBRICANT (See Note)
AMBIENT
TEMPERATURE RANGE
DEG. C
DEG. F
VISCOSITY (SAE)
Eaton-Fuller HD engine oil: API CE or CF-4. Above -12 Above +10 50
Synthetic oil: Chevron RPM
Synthetic Transmission Fluid, or equal,
meeting MIL-L-2104D and Eaton PS-081
specifications.
Above -40 Above -40 50
NOTE: Do not use multi-viscosity or EP (extreme pressure) gear oil (e.g., axle oils) in transmissions. Multi-viscosity or EP oils may damage
components.
Standard Transmission Oil Level
NOTE: The vehicle must be parked on level ground.
• Maintain the oil level and check it regularly. Oil should be
up to bottom of filler plug hole.
Clutch System Introduction
Free pedal is the distance the clutch pedal moves by applying
only slight pressure. During free pedal the release yoke in the
transmission moves until its bearing pads contact the release
bearing. This movement of the release yoke is called free
travel. Thus, free pedal and free travel are directly related to
each other.
Medium Duty (R10/06) Y53-6008 – 203 –