Service manual

Group 170 Preventive Maintenance
59
Check Central Lubrication System
Not applicable to VN/VHD vehicles.
60
Check Air Suspension and Air Springs
Note: For further information refer to literature in Func-
tion Group 7.
To perform a check of the Air Suspension and Air
Springs complete the following:
1 Check suspension torque rods and the top shock
absorber mounts for wear and looseness.
2 Inspect all spring hanger, torsion leaves and sus-
pension fasteners to the axle.
3 Inspect all air springs for wear and cracks.
4 Check ride height of air suspension.
82