Section 120 (Rear Axle - C235): Adjustments: Adjustments: Notes

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Pinion Gear Identifying Numbers

Courtesy of CHRYSLER GROUP, LLC

Ring gear and pinion are supplied as matched sets. Identifying numbers for the ring gear and pinion are laser etched onto the pinion gear shaft and the side of the ring gear. The first number (1) is the gear set sequence number and will be the same for the pinion and ring gear. The second line (2) has a plus (+) followed by a variance number. The third line (3) is the last six digits of the part number.

Fig 2: Adjustment Shim Locations

Courtesy of CHRYSLER GROUP, LLC

Compensation for pinion gear (5) depth variance is achieved with select shims (3). The shims are placed behind the rear pinion bearing cup (6).

Calculating the pinion depth variance will require some simple math. Subtract the number etched in the pinion from the standard pinion depth of 117.475 in millimeters.

Example 1: New pinion has a marking of 117.485. Subtract 117.485 from 117.475. (117.475 - 117.485 = negative (-) 0.010 mm).

Example 2: New pinion has a marking of 117.465. Subtract 117.465 from 117.475 (117.475 - 117.465 = positive (+) 0.010 mm).

This will indicate a positive (+) or negative (-) number and will be added or subtracted from the calculated shim thickness later in the procedure. Record the calculated pinion depth variance, positive (+) or negative (-), for later use.