Peterbilt 579 Operator's Manual page 249

SYSTEM COMPONENT
Frame Fifth Wheel
Frame Fasteners
Crossmembers and
Mounting Brackets
Engine Mounting
(04/13)
PREVENTIVE MAINTENANCE (PM) INTERVALS
MAINTENANCE TASK
Check the kingpin lock and plate for wear and function;
lubricate (NLGI #2 grease).
Inspect fifth wheel operation (shown on page 5-126)
Check for tightness; tighten to the specified torque value as
required (shown on page 5-105).
Inspect for cracks and loose fasteners. Replace or tighten to
the specified torque value as required (shown on page 5-105).
Inspect engine mounts every 60,000 miles (96,560 km) (shown
on page 5-100). Contact an authorized vehicle OEM dealership
if engine mounts need servicing.
Y53-6047–2C
PREVENTIVE MAINTENANCE SCHEDULE
I
Recommended PM Interval
A B C D E
X
X
X
X
X
5-13
5