Inspection Of The Cab Suspension

4700 mm 60.01.001
  1. On single and dual air spring systems, inspect the air spring(s) at the rear of the cab. Check for wear, air leaks, and damage. See Fig. for typical single air spring suspension, Fig. for a typical dual air spring suspension. Replace damaged components if necessary. On combined air spring/shock absorber suspension, check for wear, air leaks, fluid leaks, and damage. See Fig. for air spring/shock absorber suspension. Replace damaged components if necessary.

    1. Air Spring

    2. Shock Absorber

    Fig. 1, Single Air Spring Cab Suspension (typical)

    • 5-1/2 inches (140 mm)

    1. Shock Absorber

    2. Air Spring

    Fig. 2, Dual Air Spring Cab Suspension (typical)

    Ride height is not adjustable.

    1. Combined Air Spring/Shock Absorber

    Fig. 3, Air Spring/Shock Absorber Suspension

  2. On single or dual air spring suspensions, check the distance between the top and bottom air spring mounting brackets. the air spring(s) should be inflated so that the distance between the top and bottom brackets measures 5-1/2 inches (140 mm). See Fig. for typical single air spring suspension, Fig. for a typical dual air spring suspension.
  3. Inspect the cab suspension shock absorbers for wear, damage, or leaking fluid. See Fig. for single air spring suspension, Fig. for dual air spring suspension or, Fig. for air spring/shock absorber suspension. Replace if necessary.
Note:
Parent topic: Cab
Document Number: 0000121088
Manual Publication Date: 2024-05-23
Topic Publication Date: 2024-10-31