SAFARI

FRONT AXLE - 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.

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.

200