3
Inspection and Maintenance
5
Meritor
Maintenance Manual 14R (Revised 12-18)
3 Inspection and Maintenance
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in
this publication. They provide information that can help prevent
serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection
when you perform vehicle maintenance or service.
Check fastener torque values, tighten loose fasteners and
replace damaged fasteners. Loose, damaged or missing
fasteners can cause loss of vehicle control, serious personal
injury and damage to components.
Refer to Section 8 for the torque values.
Inspection
Inspect the suspension, air suspension components, height control
valve and axle at regular intervals during normal operation and each
time the trailer is serviced.
앫
Before each trip, visually inspect the system. Listen for air leaks.
After 1,000 Miles (1600 km) and Annually Thereafter
1.
Visually inspect all fasteners for looseness or movement.
Figure 3.1. Ensure loose fasteners have not caused damage to
any suspension components. Tighten loose fasteners to the
correct torque specified in Section 8.
앫
Replace any damaged components and fasteners. Refer to
Section 4 for component removal and installation
procedures.
앫
If a loose pivot bolt is at an upper control arm pivot
connection:
Disassemble the pivot joint at the loose
fastener location. Refer to “Upper Control Arm” in Section 4
for the procedures.
2.
Replace damaged fasteners to maintain the correct torque
specifications to comply with warranty requirements. Refer to
Section 8.
3.
Visually inspect the upper control arm bushings for ragged or
loose pieces that can protrude from the pivot connection area.
Damage to components can result.
앫
If the upper control arm bushings are ragged or have
loose pieces that protrude from them:
Replace the
bushings. Refer to Section 4 for the upper control arm
bushing removal and installation procedures.