Hummer H1 Service Manual page 606

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Straightening
1. When performing straightening repairs with the frame on
the vehicle:
• Use spreader plates or wood blocking to distribute chain
force to avoid damage to frame box section.
• Be sure to loosen sufficient length of frame to allow
frame force points to move without causing other dam-
age.
• Restrain vehicle movement in both directions along line
of force application.
MEASURE FROM CENTER
OF BODY MOUNT
BRACKET HOLES
05745159
49.150-48.850
INCHES
77.026-76.466
INCHES
Figure 9-157: Frame Dimensions
Axles, Suspension, and Frame
2. Vertical bends, except at end sections, require removal of
frame rail from vehicle.
3. Application of bulk heating to frame components is not
authorized, metal properties will be irreversibly degraded.
4. At the conclusion of a bend repair, carefully inspect welds
in the vicinity of repair and area of force application. Any
evidence of cracking or chipping of welds must be
repaired.
MEASURE FROM CENTER
OF BODY MOUNT
BRACKET HOLES
72.304-72.124
INCHES
MEASURE FROM OUTSIDE
EDGE OF FRAME RAILS
9-69
29.30-29.06
INCHES