Cab Mounts; Cab Mount Replacement - GMC G Service Manual

CAB MOUNT REPLACEMENT

When changing cab mounts, it is important to properly
support the frame while changing the mount. If only one
mount is to be changed, the entire side on which the mount
is placed must be lowered enough to provide clearance for
the mount.
Remove or Disconnect (Figures 29 through
E
• Raise the vehicle slightly on the hoist.
• Place jack stands under the body on the side of the
vehicle where the mounts will be replaced.
1. Bolt (279), retainer (278), and lower cushion (277) or
nut (283), washer (282), cushion (277) and spacer
(281).
• Lower the hoist enough to leave the body supported
by the jacks.
A. Mount No. 1
B. Mount No. 2
C. Mount No. 3
275. Shim
276. Upper Cushion
277. Lower Cushion
278. Retainer
279. Bolt
280. Weld Nut
Figure 29 — Cab Mounts for the R/V Chassis with a Bonus or Crew Cab

CAB MOUNTS

2. Shim (275) and upper cushion (276).
E
Install or Connect (Figures 29 through 31)
1. Upper cushion (276) and shim (275).
• Raise the frame on the hoist slightly.
2. Lower cushion (277), retainer (278) and bolt (279) or
spacer (281), cushion (277), washer (282) and nut
(283).
• Remove the jacks.
• Lower the hoist
280
277
279
SHEET METAL 2B-25
Tighten
• Bolts to 75 N»m (55 ft. lbs.).
• Nuts to 47 N*m (35 ft. lbs.).
280