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ADJUSTMENTS 8 1/4 AXLE PINION GEAR DEPTH GENERAL INFORMATION Ring gears and pinions are supplied as matched sets only. The identifying numbers for the ring gear Compensation for pinion depth variance is achieved with select shims. The shims are placed If a new gear set is being installed, note the depth variance etched into both the original and replace- Note where Old and New Pinion Marking columns intersect. Intersecting figure represents plus or minus the amount needed. Note the etched number on the face of the pinion gear head (–1, –2, 0, +1, +2, etc.). The numbers rep- the depth shim. If the number is 0 no change is nec- PINION DEPTH MEASUREMENT AND ADJUSTMENT Measurements are taken with pinion bearing cups and pinion bearings installed in the axle housing. (1) Assemble Pinion Height Block 6739, Pinion Block 8540, and rear pinion bearing onto Screw 6741 (2) Insert assembled height gauge components, rear bearing, and screw into axle housing through (3) Install front pinion bearing and Cone-Nut 6740 hand tight (Fig. 53). (4) Place Arbor Disc 8541 on Arbor D-115-3 in posi- tion in axle housing side bearing cradles (Fig. 55). NOTE: Arbor Discs 8541 has different step diame- (5) Assemble Dial Indicator C-3339 into Scooter Block D-115-2 and secure set screw. (6) Place Scooter Block/Dial Indicator in position in axle housing so dial probe and scooter block are Fig. 51 Pinion Gear ID Numbers 1 – PRODUCTION NUMBERS NUMBER) Fig. 52 Shim Locations 1 – AXLE HOUSING 3 - 126 8 1/4 REAR AXLE XJ |