Front Bumper: Service and Repair
WM 631019 Removing and installing front bumper
Technical values
Preliminary work
1. Remove front apron, -> 631519 Removing and installing front apron - section on "Removing" .
2. Remove side air guide, -> 243619 Removing and installing front side air guide - section on "Removing" 243619 Removing and installing front air guide at the side
3. Disconnect plug connection at control unit for distance measuring sensor, -> 278519 Removing and installing control unit for distance measuring sensor - section on "Removing" 278519 Removing and installing control unit for distance measuring sensor.
Removing front bumper
Securing radiator module
Information
- To avoid damage to the wing, the radiator module must be secured at the same height before the bumper is removed.
- This can be achieved either by securing it to the subframe using tie-wraps or by supporting it on a workshop jack or transmission jack.
1. Secure radiator module -7- with tie-wraps -9- to the subframe -8-.
Securing radiator module
Removing front bumper
1. Fold open air guides -6-.
Folding open air guides
2. Disconnect plug connections at the horns -5-.
Horn plug connection
2.1. Release locking lug -arrow A-.
2.2. Pull off connector -arrow B-.
3. Unscrew fastening screws -3-.
Unscrewing fastening screws
4. Unscrew fastening screws -2-.
5. Remove horn with holder -4-.
6. Unscrew fastening screws -2-.
Bumper mount
7. Remove bumper -1-.
Installing front bumper
NOTICE
Different tightening torque for screwing self-tapping screws into a new or existing, old thread.
- Incorrectly screwed joints
- Risk of damage to screw thread
-> Observe different tightening torques.
-> When screwing screws into an existing, old thread, first screw the screws in a few turns by hand, then screw them in fully using a tool.
Installation is performed in reverse order to removal.
1. Screw in fastening screws -2- and tighten to tightening torque => Tightening torque: 50 Nm (37 ftlb.)+5 Nm (+3.5 ftlb.)-7.5 Nm (-5.5 ftlb.)
Bumper mount
.
2. Screw in fastening screws -3- and tighten to tightening torque => Tightening torque: 13 Nm (9.5 ftlb.)+1 Nm (+0.5 ftlb.)-2 Nm (-1.5 ftlb.)
Unscrewing fastening screws
=> Tightening torque: 9.7 Nm (7 ftlb.)+1 Nm (+0.5 ftlb.)-1.5 Nm (-1 ftlb.)
3. Remove tie-wrap at radiator module.
Subsequent work
1. Install side air guide, -> 243619 Removing and installing front side air guide - section on "Installing" 243619 Removing and installing front air guide at the side
2. Insert plug connection at control unit for distance measuring sensor, -> 278519 Removing and installing control unit for distance measuring sensor - section on "Installing" 278519 Removing and installing control unit for distance measuring sensor.
3. Install front apron, -> 631519 Removing and installing front apron - section on "Installing" .
4. Adjust control unit for distance measuring sensor, -> 278515 Adjusting control unit for distance measuring sensor 278515 Adjusting control unit for distance measuring sensor.