Vehicles With ABS

Vehicles With ABS:

DISASSEMBLY
Follow disassembly steps outlined in illustration.

NOTE: Disassembly service points as follows:

A. Retainer removal. (3)





1. Remove one retainer bolt from the backing plate.
2. Apply gummed cloth tape around the edge of the bearing case for protection.





3. As shown in the figure, fix the axle shaft and shave off with grinder a point of its circumference locally until the wall thickness on the side of axle shaft of retainer ring and the side of bearing become approximately 1.0-2.0 mm (0.04-0.08 inch) and 2.0 mm (0.08 inch) respectively.

CAUTION: Be careful not to damage the bearing case and the axle shaft.





4. Fix the axle shaft and shave off the remaining 2.0 mm (0.08 inch) on the side of the bearing of the retainer.

CAUTION: Be careful not to damage the bearing case and the axle shaft.





5. Cut in with a chisel the place where the retainer ring has been shaven and remove the retainer.

CAUTION: Be careful not to damage the axle shaft.





B. Axle shaft removal. (4)
Required Special Tool or equivalent:
MB991552: Axle Shaft Bearing and Case Remover
1. Secure special tool MB991552 to the bearing case bolts with the nuts installing the washers, plate and nuts in that order and adjust the height of the hanger.

CAUTION: The hanger and plate should be placed so that they are parallel.

NOTE: The washers are used to eliminate the difference in height of the bearing case so that the plate and the bearing case are parallel.

2. Place the end of the bolt against the center of the axle shaft, and then tighten the bolt to remove the axle shaft from the bearing case assembly.





C. Outer bearing inner race removal. (7)
Required Special Tool or equivalent:
MB990560: Bearing Remover.
Install special tool MB990560 as shown in the illustration, and then use a press to remove the outer bearing inner race from the axle shaft.
D. Bearing outer race removal. (11)





Required. Special Tool:
MB990799: Bearing Inner Race installer.
Reinstall the outer bearing inner race that was removed previously. Use special tool MB990799 and a press to remove the bearing outer race.

INSPECTION
1. Check the dust cover for deformation or damage.
2. Check the inner and outer bearings for seizure, discoloration and rough raceway surface.
3. Check the axle shaft for cracks, wear and damage.

ASSEMBLY
Assembly in reverse order as disassembly.

NOTE: Assembly service points as follows:

A. Bearing outer race installation. (11)





Required Special Tool or equivalent:
MB990890 or MB990891: Rear Suspension Bushing Base.





B. Inner bearing inner race / outer bearing inner race installation. (7 & 9)
Required Special Tool or equivalent:
MB990799: Bearing Inner Race Installer.
1. Apply multipurpose grease to the roller surface and ends of the bearing.
2. Pass the axle shaft through the bearing case and the inner bearing inner race and outer bearing inner race.
3. Use special tool MB990799 to press-fit the inner bearing inner race and outer bearing inner race to the axle shaft.

CAUTION: Both the inner bearing inner race and outer bearing inner race should be press-fitted together.





C. Oil seal installation. (10)
Required Special Tools or equivalents:
MB990936: Installation Adapter.
MB990938: Bar.
1. Apply multipurpose grease to the external periphery of the oil seal.
2. Press-fit the oil seal into the bearing case until it is flush with the face of the bearing case by using special tools MB990936 and MB990938.
3. Apply multipurpose grease to the lips of the oil seal.





D. Retainer installation. (3)
Required Special Tool or equivalent:
MB990799: Bearing Inner Race Installer.
Use the special tool to press-fit the retainer onto the axle shaft, while checking that the press-fitting force is at the standard value.
If the initial press-fitting force is less that the standard value, replace the axle shaft.

Standard value:
Initial press-fitting force: 49,000 N (11,016 lbs.) or more.
Final press-fitting force: 98,000 - 108,000 N (22,032 - 24,281 lbs.)





E. ABS rotor installation. (2)
Required Special Tool or equivalent:
MB990787: Axle Shaft Bearing Remover.





F. Snap ring installation. (1)
1. After installing the snap ring, measure the clearance (A) between the snap ring and the retainer with a feeler gauge, and check that it is within the standard values.

Standard value (A): 0 - 0.166 mm (0 - 0.0065 inch) or less.

2. If the clearance exceeds the standard value, change the snap ring so that the clearance is at the standard value.
Thickness of snap ring and Identification color.
2.17 mm (0.085 inch): None.
2.01 mm (0.079 inch): Yellow.
1.85 mm (0.073 inch): Blue.
1.69 mm (0.067 inch): Purple.
1.53 mm (0.060 inch): Red.

Example:
Clearance: 2.0 mm (0.08 inch)
Standard value: 0 - 0.166 mm (0 - 0.0065 inch)
Thickness of snap ring: 2.01 mm (0.079 inch)