Peterbilt Car 386

Check lock guard operation using a commercial lock tester

Lubricate the lock mechanism with a lithium-base grease

All grease fittings (especially those which grease the top surface of the fifth wheel)

Every 60,000 miles or 6 months:

Remove fifth wheel from vehicle

Steam clean the fifth wheel and mounting brackets

NOTE: The tires installed on this vehicle at the factory as original equipment are certified for Greenhouse Gas and Fuel Efficiency regulations. Replacement tires must be of equal or lower rolling resistance level (TRRL or Crr). Consult with your tire supplier(s) for appropriate replacement tires.

Maintaining a greenhouse gas certified tire. In order to limit the rolling resistance of the tires and optimize fuel economy, the maintenance procedures specified by the tire manufacture must be followed.

For warranty information, See Original Equipment Tires on page 6-10.

Tires are of equal or lower rolling resistance level (TRRL or Crr)?

Tire supplier consulted for appropriate replacement tires

Maintenance procedures specified by the tire manufacture followed?

Sign off on the tire maintenance

Hub, Drum, and Hubcap Hubs (non-LMS) with outrunner seals: Clean the components and check for excessive wear or damage. Change the oil and seal (shown on page 5-54).

Use hypoid oil, A.P.I.-GL-5 SAE 75W-90FE synthetic gear lubricant or equivalent. A minimum of 1 quart (921 ml) of oil is required for proper lubrication of each drive hub. Add oil through the filler hole in the hub; if none, add oil through the differential filler hole. (Note: Remember to replace vent plug or threaded filler plug when done.) Allow time for the oil to seep through the bearings when initially filling a hub.

Maintain the differential oil level by adding oil until its surface is even with the bottom of the filler hole (see illustration on page 5-45).

Use CD50 synthetic transmission fluid SAE 50W or equivalent. A minimum of 9 oz. (270 ml) of lubricant is required for proper lubrication of an LMSTM hub; 10-13 oz. (295-400 ml) is required for a non-LMS hub, depending on wheel design. Allow time for the fluid to seep through the bearings when initially filling a hub. When properly filled, the fluid level will lie between the fluid level line and 1/4” above the line.

NOTE: Remember to replace vent plug when done.

Cooling Extended Life Coolant (ELC): Flush, drain, and refill with new coolant (shown on page 5-82).;

Warning: This check requires trained personnel with PPE!

Enter the current operating hours of the air dryer

Presence of moisture in the air brake system?

Note: A small amount of oil in the system may be normal and should not, in itself, be considered a reason to replace the desiccant cartridge.

Is the air usage exceptionally high?

Has there been a temperature range of more than 30° F (17° C) in one day?

Has an outside air source been used to charge the air system?

Is the desiccant cartridge functioning adequately?

Sign off on the air dryer check

Warning: Use the proper lubricants and maintain the correct oil levels in Spicer units.

Did you use extreme pressure additives?

Warning: Do not use extreme pressure additives. They may create transmission problems.

Any signs of corrosion on steel and bronze parts?

Sign off on the Spicer Transmission Lubrication