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replacement bolts that are used to join the frame FRAME REPAIRS DRILLING HOLES Do not drill holes in frame side rail top and bottom flanges, metal fatigue can result causing frame fail- Additional drill holes should be located away from existing holes. WELDING Use MIG, TIG or arc welding equipment to repair welded frame components. Frame components that have been damaged should be inspected for cracks before returning the vehicle (1) Drill a hole at each end of the crack with a 3 mm (O.125 in.) diameter drill bit. (2) Using a suitable die grinder with 3 inch cut off wheel, V-groove the crack to allow 100% weld pene- (3) Weld the crack. the weld smooth and install a reinforcement channel NOTE: If a reinforcement channel is required, the FRAME FASTENERS Bolts, nuts and rivets can be used to repair frames or to install a reinforcement section on the frame. Conical-type washers are preferred over the split- ring type lock washers. Normally, grade-5 bolts are REMOVAL AND INSTALLATION FRONT AXLE SKID PLATE REMOVAL (1) Position a support under skid plate. crossmember (Fig. 2). (3) Remove bolts attaching skid plate to skid plate crossmember (Fig. 3). (4) Separate skid plate from the vehicle. INSTALLATION (1) Position and support skid plate at front cross- member. (2) Install bolts attaching skid plate to transmis- sion crossmember. Tighten to 23 N·m (17 ft. lbs.) (3) Install bolts attaching skid plate to front cross- member. Tighten to 23 N·m (17 ft. lbs.) torque. (4) Remove support from under skid plate. Fig. 1 Frame Reinforcement 1 – .250 IN FROM EDGE Fig. 2 Front Axle Skid Plate 1 – U-NUT 13 - 6 FRAME AND BUMPERS DN SERVICE PROCEDURES (Continued) |