SAFARI

27 FRONT AXLE - 4 X 4 RING AND PINION GEAR ASSEMBLY THEORY Ring gear and pinions are supplied in matched sets only. Matching numbers on both pinion and ring gear are etched for verification. Fig. 42 If a new gear set is being used, verify the numbers of each pinion and ring before proceeding with assembly. The mounting distance from the center line of the ring gear to the back face of the pinion for the front axle is 3.625 Inch. (92.08 mm.) On the bottom end of each pinion, there is etched a plus (+) number, a minus (-) number, or a Zero (0) number, which indicates the best running position for each particular gear set. This dimension is controlled by selecting shims, between the inner pinion bearing cone and pinion gear. For example : If a pinion is etched +3 (m+8), it would require 0.003 in. (0.08 mm) less shim than a pinion etched ‘O’. This means decreasing shim thickness; increase the mounting distance of the pinion to 3.625 in. (92.15 mm). If a pinion is etched -3 (m-8) it would require adding .003 in. (.08 mm) more to the shim than would be required if the pinion were etched ‘O’. By adding .003 in. (.08 mm), the mounting distance of the pinion was decreased to 3.622 in. (91.9mm) which is just what a -3 (m-8) etching indicated. To change the pinion adjustment, use different shims which come in different thicknesses. Use the tables on next page as a guide for selecting the correct number of shims to add or subtract from the old shim pack. A B F +3 0 750 +8 750 Fig. 42 Fig. 42 A shows ring and pinion etched with inch identification. Refer Table A. Fig. 42 B shows ring and pinion etched with metric indentification. Refer Table B. k 200 200 m o