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FRONT AXLE - 216FBI TABLE OF CONTENTS page page FRONT AXLE - 216FBI . . . . . . . . . . . . . . . . 49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 . . . . . . . . . . . . . . . . . . . . . . . . . 53 . . . . . . . . . . . . . . . . . . . . . . . . 55 . . . . . . . . . . . . . . . . . . . . . . . . 63 . . . . . . . . . . . . . . . . . . . . . . . 63 AXLE SHAFTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 . . . . . . . . . . . . . . . . . . . . . . . . . 67 AXLE SHAFT SEALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 . . . . . . . . . . . . . . . . . . . . . . . . . 67 SINGLE CARDAN UNIVERSAL JOINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 . . . . . . . . . . . . . . . . . . . . . . . . . 68 PINION SEAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 . . . . . . . . . . . . . . . . . . . . . . . . . 69 DIFFERENTIAL COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 . . . . . . . . . . . . . . . . . . . . . . . . . 70 DIFFERENTIAL - TRU-LOK . . . . . . . . . . . . . . . . . . . . . . . . . 71 . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 . . . . . . . . . . . . . . . . 71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 . . . . . . . . . . . . . . . . . . . . . . . . . 75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 . . . . . . . . . . . . . . . . . . . . . . . . . 76 DIFFERENTIAL - TRU-LOK PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 . . . . . . . . . . . . . . . . . . . . . . . . . 78 PINION GEAR/RING GEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 . . . . . . . . . . . . . . . . . . . . . . . . . 81 FRONT AXLE - 216FBI DIAGNOSIS AND TESTING GEAR NOISE Axle gear noise can be caused by insufficient lubri- cant, incorrect backlash, tooth contact, worn/damaged Gear noise usually happens at a specific speed range. The noise can also occur during a specific type When road testing, first warm-up the axle fluid by driving the vehicle at least 5 miles and then acceler- • Check for insufficient lubricant. • Incorrect ring gear backlash. • Gear damage. by turning the vehicle. They usually do not cause BEARING NOISE The axle shaft, differential and pinion bearings can all produce noise when worn or damaged. Bearing Pinion bearings have a constant-pitch noise. This noise changes only with vehicle speed. Pinion bearing Worn or damaged differential bearings usually pro- duce a low pitch noise. Differential bearing noise is Axle shaft bearings produce noise and vibration when worn or damaged. The noise generally changes TJ FRONT AXLE - 216FBI 3 - 49 |