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# 03-12 Chassis frame verification

Figure 1 - Chassis Frame Location
Figure 1 - Chassis Frame Location

PROCEDURE

  1. Make sure the work can be done safely.

  2. Make sure the vehicle is on a flat surface.

  3. Go under the vehicle and make sure that the chassis, the side rails, and the crossmembers are not damaged, twisted, or rusted (Figure 2).

Figure 2 – Chassis rails and crossmembers
Figure 2 – Chassis rails and crossmembers

  1. Make sure that the fasteners of the front suspension are tightened as per the torque specifications on Figure 3.

Figure 3 - Front suspension fasteners
Figure 3 - Front suspension fasteners

  1. If the vehicle has leaf-spring rear suspension, verify the torque of the fasteners, as per Figure 4.

Figure 4 - Rear leaf spring suspension fasteners
Figure 4 - Rear leaf spring suspension fasteners

  1. If the vehicle has rear air suspension, verify the torque of the fasteners, as per Figure 5.

Figure 5 - Rear air spring suspension fasteners
Figure 5 - Rear air spring suspension fasteners

  1. Make sure all the accessible fasteners holding the four (4) remaining crossmembers to the side rails are tightened to 68 ft-lb (92 Nm).

Crossmember fasteners to retorque
Crossmember fasteners to retorque

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