Frame: Description and Operation
FRAME AND BODY MOUNTINGThe frame consists of 2 steel channel rails, a front crossmember, transmission support crossmember and a rear crossmember (trailer hitch). New side rails and welded crossmembers are not installed separately. A front frame rail repair kit (5D058 and 5D059) is available if the front rail is to be repaired.
The 1A crossmember (5019) is used on 4x2 vehicles only. The 1B crossmember (5D146) is included in assembly to the frame but can be serviced separately.
Frame-Mounted Heat Shields
The frame-mounted heat shields are attached to the top of the frame and crossmembers with bolts. The body must be lifted off the frame enough for access to the bolts that attach the heat shields to the top of the frame.
Structural Enhancement
Structural Enhancement:
The purpose of this insert is to enhance the structural rigidity of the frame in this area. The insert cannot be replaced or repaired.