Section 5
Frame Layouts and Body
Mounting
WARNING:
If the frame rail flanges are modified or damaged, the rail could fail prematurely and cause an
accident. When mounting a body to the chassis, DO NOT drill holes in the upper or lower flange of
the frame rail. Mount the body using body mounting brackets or U–bolts.
Body Mounting Using Brackets
CAUTION:
Always install a spacer between the body subframe and the top flange of the frame rail. Failure
to do so could result in corrosion due to dissimilar materials.
Installation of a spacer between the body subframe and the top flange of the frame rail will help prevent premature
wear of the components due to chafing or corrosion.
Frame Sill
If the body is mounted to the frame with brackets, we recommend that the frame sill spacer be made from a strip of
rubber or plastic (delrin or nylon). These materials will not undergo large dimensional changes during periods of high or
low humidity. The strip will be less likely to fall out during extreme relative motion between body and chassis.
See Figure 5-4.
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