40571900 Removing and Installing Front Wheel Bearing

WM 405719 Removing and installing front wheel bearing

Tools









Technical values






Tools

Tool overview for wheel bearing





Tool overview for wheel bearing






Information

Overview of front wheel bearing










Removing front wheel bearing

CAUTION

Increased danger of accident when handling hydraulic presses.

- Danger of crushing and material damage if the wheel carrier is raised improperly.
- Watch out for parts falling when working with the hydraulic cylinder.

-> Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
-> When raising the suspension, use a suitable intermediate layer (hard rubber).
-> Do not damage the brake cover plate.
-> Vehicle may not be moved if drive shafts have not been fitted and tightened.

Information

The wheel bearing is removed with the wheel bearing housing installed.

1. Remove the corresponding hub cap with puller hook 92291 and release the axle nut (fastening nut) before lifting the vehicle. Operate the brake whilst doing so (2 fitters required).
2. Remove wheel. -> 440519 Removing and installing wheel - section on "Removing" Removal and Replacement
3. Remove the axle nut (fastening nut). Perform work up to step 7 in section Removing and installing front drive shaft. -> 404119 Removing and installing front drive shaft - section on "Removing" 40411900 Removing and installing front drive shaft.
4. Remove the two holders (brake hose, combination wire) on wheel bearing housing.
5. Remove the wheel speed sensor. -> 451119 Removing and installing front rpm sensor - section on "Removing" Service and Repair
6. Remove the brake disc. -> 465019 Removing and installing front brake disc - section on "Removing"
7. Press out the wheel carrier on the top axle strut (top ball joint) with press-out tool T10187.





8. Undo the drive shaft on the transmission. To do this, first fitter must pull out top wheel carrier outwards carefully, so that the second fitter can carefully pull out the drive shaft.
9. Insert the wheel bearing housing again on the top axle strut (top ball joint) and screw on nut.
10. Remove wheel hub (tools) => see figure.





11. Secure the grip pieces (2 half shells) T10205/1 (from attachments T10205 ) with several wheel bolts behind the wheel hub. => see figure





12. Insert the T10205/2 bell (from attachments T10205 ) into the provided groove in the correct position. => see figure





13. Insert the tubular piston cylinder vas 6178. Position the T10205/3 pressure piece (from attachments T10205 ) and the 8-2 nut for the threaded rod (from attachments T10205 ). Press out the wheel hub. => see figure





It should be ensured that the separator is not pressing on the seat of the bearing inner race on the wheel hub => see figure.





14. If the wheel hub is used again, remove the -Inner race of the wheel bearing- from the wheel hub. To do this, position the 12 - 115 mm dia. separator NR.111 behind the inner race.
15. Press inner race off the wheel hub. To do this, position the T10205/2 bell (from attachments T10205 ) without the grip piece. Insert the tubular piston cylinder vas 6178. Position the T10205/3 pressure piece (from attachments T10205 ) and the 8-2 nut for the threaded rod (from attachments T10205 ). => see figure





16. Remove the -Snap ring-. => see figure





17. Remove the wheel bearing (tools) => see figure.





18. Press out the wheel bearing. To do this, position the T10205/5 and T10205/4 (from attachments T10205 ) in correct position on the wheel bearing housing. Insert the tubular piston cylinder vas 6178. Position the T10205/6 (from attachments T10205 ) and the 8-2 nut for the threaded rod (from attachments T10205 ). => see figure






Installing front wheel bearing

CAUTION

Increased danger of accident when handling hydraulic presses.

- Danger of crushing and material damage if the wheel carrier is raised improperly.
- Watch out for parts falling when working with the hydraulic cylinder.

-> Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
-> When raising the suspension, use a suitable intermediate layer (hard rubber).
-> Do not damage the brake cover plate.
-> Vehicle may not be moved if drive shafts have not been fitted and tightened.

Information

- The wheel bearing must not come into contact with magnetic objects (e.g., magnetic screwdriver, magnet).

- The entire threaded parts of the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on the wheels, or the wheel suspension is being raised with a universal vehicle lift. -Dimension X- , from => Control value: 502 mm+/-10 mm corresponds to the vehicle position.





- Visually inspect all parts.

- Replace self-locking nuts.

- Replace all expansion screws (screws which are fitted with torque angle tightening procedure).

- Use correct tightening torques and torque angle. => Tightening torques for front axle

- Screws are Dacromet-coated and must not be greased.

- Make sure the bevel pinions from the ball joints are clean. Clean with a lint-free cloth as necessary. Do not use cleaning agent.

1. Fit the wheel bearing (tools). => see figure





Check that the bearing seat -arrow- (in rear axle figure) is clean and the surface is in good order. There must not be scores, grooves or deformations.





Insert the wheel bearing with the magnetic multiple-pole ring to the drive shaft. Check the magnetic side (e.g., with a paper clip). Do not use magnets or screw drivers to check.
2. Position the -wheel bearing in the wheel bearing housing- in the correct position. Position the T10205/7 pressure piece (from attachments T10205 ) in the correct position on the wheel bearing. Insert the tubular piston cylinder vas 6178. Position the T10205/9 pressure piece (from attachments T10205 ) and the 8-2 nut for threaded rod (from attachments T10205 ) in the correct position. Mount wheel bearing. Shortly before the stop, the applied force will be between 35 kN and 60 kN. Do not exceed the maximum assembling force at the stop. => assembling force: 90 KN





3. Position the -snap ring- with the opening facing downward. When the Seger ring is fitted correctly, -dimension X- is at least 15 mm. => minimum dimension: 15 mm If this dimension is not reached, the Seger ring must be fitted again. If necessary, carefully press the wheel bearing again.





4. Fit wheel hub (tools) => see figure.





Carry out a close visual inspection of the seat of the wheel hub. There must not be scores, grooves or similar deformations on the hub.
5. Position the -wheel hub- in the correct position. Position the T10205/10 pressure piece (from attachments T10205 ) in the correct position on the wheel hub. Insert the tubular piston cylinder vas 6178. Position the T10205/6 pressure piece (from attachments T10205 ) and the 8-2 nut for threaded rod (from attachments T10205 ) in the correct position. Pull in the wheel hub. Shortly before the stop, the applied force will be between 9 kN and 35 kN. Do not exceed the maximum assembling force at the stop. => assembling force: 40 KN





6. Fit drive shaft. -> 404119 Removing and installing front drive shaft - section on "Installing" 40411900 Removing and installing front drive shaft
7. Press out the wheel carrier on the top axle strut (top ball joint).
8. Fit the brake disc. -> 465019 Removing and installing front brake disc - section on "Installing"
9. Fit the wheel speed sensor. -> 451119 Removing and installing front rpm sensor - section on "Installing" Service and Repair
10. Fit the two holders (brake hose, combination wire) on wheel bearing housing.

Subsequent work

Fit wheel.-> 440519 Removing and installing wheel - section on "Installing" Removal and Replacement