Removal and Replacement

REMOVAL AND INSTALLATION

REMOVAL SERVICE POINTS
[[A]] CALIPER ASSEMBLY REMOVAL
Secure the removed caliper assembly with wire to prevent it from falling off.

[[B]] JAM NUT REMOVAL





Use special tool MB990954 to remove jam nut.

[[C]] FRONT HUB ASSEMBLY REMOVAL





Do not drop the outer bearing inner race.

INSTALLATION SERVICE POINT
]]A[[ JAM NUT INSTALLATION
Using special tool MB990954 tighten the jam nut by the following procedures.





1. Tighten the jam nut to 127 - 196 Nm (94 - 145 ft. lbs.), and then turn the front hub assembly to run in the bearings.
2. Loosen the nuts to 0 Nm (0 inch lbs.).
3. After re-tightening to 25 Nm (18 ft. lbs.), loosen the jam nuts by approximately 30 degree angle.

]]B[[ SPRING WASHER INSTALLATION





Install the lock washer. If the hole position is not aligned with the jam nut, move it within a range of not more than 20 degree angle until the holes are aligned.

]]C[[ HUB ROTARY SLIDING RESISTANCE AND WHEEL BEARING AXIAL MOVEMENT ADJUSTMENT [4WD]





1. Use a spring scale to measure the hub rotary sliding resistance (hub rotation breakaway torque) as shown in the illustration.
Standard value: 4 - 19 N (0.9 - 4.3 lb.) [0.3 - 1.3 Nm (2.7 - 11.5 inch lbs.)]
2. If the rotary sliding resistance is not within the standard value, remove the lock washer and adjust by the following procedure.
1. If the rotary sliding resistance is lower than the standard value, use special tool MB990954 to tighten the jam nut.
2. If the rotary sliding resistance is higher than the standard value, use special tool MB990954 to loosen the jam nut.





3. Install a dial gauge as shown in the illustration, and then move the hub in the axial direction and measure how far the front wheel bearing moves.
Standard value: 0.05 mm (0.002 inch) or less
4. If the distance exceeds the standard value, remove the spring washer and use special tool MB990954 to tighten the jam nut.
5. If adjustment is not possible, disassemble the hub and inspect each part.

]]D[[ DRIVESHAFT END PLAY ADJUSTMENT [4WD]
1. Push the driveshaft in by hand towards the knuckle until they touch.





2. Measure the clearance between the drive flange and the spacer with a feeler gauge as shown in the illustration.
Standard value: 0.4 - 0.7 mm (0.02 - 0.03 inch)
3. If the amount of play is not within the standard value, adjust by selecting a shim that will bring the play to the standard value.