Peterbilt Car 365

WARNING!: Do not attempt to modify, alter, repair or disconnect any component of the air system.

WARNING!: Prior to the removal of any air system component, always block and hold the vehicle by a secure means other than the vehicle's own brakes.

WARNING!: After completing any repairs to the air system, always test for air leaks, and check the brakes for safe operation before putting the vehicle in service.

WARNING!: Never connect or disconnect a hose or line containing air pressure.

WARNING!: Never exceed recommended air pressure and always wear safety glasses when working with air pressure.

WARNING!: Never attempt to disassemble a component until you have read and understood recommended procedures.

WARNING!: Completely bypassing a Bendix® AD-IS air dryer will bypass the system’s pressure protection valves.

The operation of the vehicle’s braking system and many vehicle accessories depends upon the storage and application of a high-pressure air supply.

Frame Fifth Wheel: Check the kingpin lock and plate for wear and function; lubricate (NLGI #2 grease).

Front Suspension Spring Pins: Check for proper function.

Front Suspension U-bolts (OFF HIGHWAY): Check the general condition and the tightness of the nuts.

Tighten U-bolt nuts to the specified torque value with the vehicle loaded to its normal gross weight.

Drum Brakes (All) Slack adjusters: Check the push rod travel and check the control arm for cracks.

Operational checks of automatic slack adjusters

Drum Brakes (All) Brake air system: Check air lines and fittings for leaks (shown on page 5-57). Adjust routing as required to prevent chafing. Check tank mounting and condition.

Hub, Drum, and Hubcap Hubcaps: Clean the sight window. Check the center plug, mounting flange, and fill plug for leaks and for proper installation. Replace broken or damaged parts. Check the lubricant level and add as required.

Main and auxiliary transmission Main and auxiliary transmission and transfer case: Inspect for visible damage, signs of overheating, and leaks.

Proper preventive maintenance is essential to trouble-free service and safe operation of the fifth wheel.

• Refer to specific manufacturer's literature for any special instructions.

• Check lock guard operation using a commercial lock tester.

• Clean and oil all moving parts.

• 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:

Check frame fasteners for tightness

Inspect frame crossmembers and mounting brackets for cracks and loose fasteners

Check and adjust front axle (Meritor) total vehicle alignment as required

Inspect front axle (Meritor) steering knuckle spindles, thrust bearings, kingpins, drawkeys, tie rod ends, steering stops, and bushings for wear and damage and endplay

Visually check the steering gear and components

Check for unequal tire pressures, vehicle overloaded or unevenly distributed load, wheels out of alignment, wheel bearings improperly adjusted

Visually check the crosstube, draglink tube clamp, ball joints and steering U-joints, steering wheel for excessive free-play

Check and adjust front axle (Dana) total vehicle alignment as required

Lubricate front axle (Dana) kingpin bushings, thrust bearings, and tie rod ball ends (ON HIGHWAY) with approved grease

Front Axle (Meritor) Drawkeys: Tighten nuts

Front Suspension Spring Pins: Lubricate with approved grease.

Front Suspension U-bolts (OFF HIGHWAY): Check the general condition and the tightness of the nuts.

Drum Brakes (All) Brake treadle valve: Clean the area around the treadle, boot, and mounting plate.

Drum Brakes (All) Brake lining: Inspect; replace as required.

Hub, Drum, and Hubcap Hubs (non-LMS): Check the bearing endplay and adjust as required.

Hub, Drum, and Hubcap Hub seals (all): Check for leaks; replace as required.

Hub, Drum, and Hubcap Brake drums: Inspect for visible cracks, heat checking, galling or scoring of the braking surface, and for severe corrosion on the outside surface.

Main and auxiliary transmission Main and auxiliary transmission and transfer case: Check the drain plugs for tightness.