DRIVE AXLE
1986 DRIVE AXLES Mercedes-Benz Integral Carrier
AXLE RATIO & IDENTIFICATION

All models use integral carrier rear axle with semi-trailing arm rear suspension. To determine axle ratio, divide the number of ring gear teeth by the number of pinion gear teeth.
DESCRIPTION

Axle assembly is hypoid gear type in which centerline of drive pinion is mounted below centerline of ring gear. Axle assembly uses an integral carrier housing design. Removable rear cover permits inspection and service of differential. Some models may be equipped with limited slip differential. All adjustments, except pinion bearing preload, are performed using shims. Pinion bearing preload is set using a collapsible spacer.
REMOVAL & INSTALLATION
AXLE SHAFTS
Removal (190 Series)

Remove rear differential assembly from vehicle. Drain gear oil. Remove rear cover. Remove "C" lock and discard. Remove axle shaft from differential. Check sealing ring. Replace sealing ring (if necessary). Ensure compensating ring, inside flange, is firmly seated.
Installation (190 Series)

Install axle shaft. Install new "C" lock. Check axle shaft for end play. There should not be any end play. If there is end play, rotate "C" lock and recheck. If specification is still not correct, use a thicker "C" lock. Apply sealing compound to rear cover and install. Install rear differential assembly.
Removal (All Models Except 190 Series)

1. Drain lubricant from rear axle. Remove brake caliper and suspend with wire. Remove axle shaft-to-axle shaft flange bolt. Force axle shaft out of axle shaft flange. If additional clearance is required to aid in axle shaft removal, remove upper shock absorber mount and lower suspension arm to stop.
2. Support axle housing and remove rubber mount from body. Lower axle housing slightly. Clean housing and remove rear cover plate. Remove and discard "C" lock holding axle shaft to differential side gear. Pull shaft from gear along with spacer.

Fig. 1: Removing Axle Shaft "C" Lock

Installation (All Models Except 190 Series)

1. Face of "U" joint spider carries a stamped "R" for right or "L" for left. Ensure correct axle is used on correct side. Place old spacer ring on constant velocity joint. Slide axle shaft into differential side gear and install new "C" lock onto shaft.
2. Check end play between inner "U" joint and axle housing. There should be no end play. In addition, lock ring should still turn in groove. If necessary, install a thicker or thinner lock ring to achieve desired results.
3. Completely telescope axle shaft and install axle shaft flange. Tighten attaching nut. Mount end cover with sealing compound and tighten attaching bolts. Raise axle housing and install rubber mount to axle housing. Attach rubber mount to body.