NOTE: If gears are being replaced, use the exist- B. Gear Case Side - install a 1.3-1.4 mm shim and ing shims. The numbers are scribed onto the tighten the bolts to 25-31 ft-lb. Verify backlash gears: the ring gear has the number on the oppo- to be within a range of 0.28-0.38 mm site side of the gears, and the pinion gear has the (0.011-0.015 in.) and end-play to be within a number on the end of the pinion gear shaft by the range of 0.10-0.20 mm (0.004-0.008 in.). If not splines. If no number is present, it should be con- within specification range, reselect shim until sidered as being in the 0 category. backlash specification range can be verified. 4. Prior to final assembling, apply molybdenum dis- NOTE: If the gear case housing is being replaced, ulfide grease to all oil seal lips. proceed to the following Shimming Proce- dure/Shim Selection sub-section. 5. Prior to final assembling, prelubricate journal on pinion assembly with SAE 80W-90 hypoid gear Shimming Procedure/Shim lubricant prior to pressing assembly into gear case Selection housing. 1. Press bearings into bores by outer ring to hard con- Assembling Pinion Gear tact with seat. 1. Install the bearing onto the pinion shaft. Install the 2. Install the lock collar and tighten to 125 ft-lb; then pinion shaft collar. on final assembling, stake the lock collar edge approximately 1.5 mm into the lower oil channel. CC882 CC891 6 3. Note the following shim selections (shims are nominally 1.5 mm thick): CC883 2. Place the pinion assembly in a bearing puller; then install the bearing using a press. 738-268C A. Cover Side - add value A on the gear case hous- ing to value B on the gear case cover; then add 1.5 mm. This will give you the proper shim thickness. 6-9