537949 Eliminating Noise Symptoms - Reworking Balancing Weight For Rear lid

WM 537949 Eliminating noise symptoms - Reworking balancing weight for rear lid

Technical values





General information

Symptoms

Noises in the rear lid area.

Causes and remedial action

Noises may occur due to the balancing weight being excited because of different chassis settings.

In the event of a complaint, this problem must be remedied by reworking the balancing weight using a repair kit.

Tools and materials

987.512.925.00 Repair kit for balancing weight => REPAIR KIT FOR BALANCING WEIGHT

Preliminary work

1. Remove trim panel for rear lid. -> 708719 Removing and installing trim panel for rear lid - section on "Removing" 708719 Removing and installing trim panel for rear lid

Reworking balancing weight for rear lid

1. Unscrew fastening screws -1- and remove balancing weight -2- from the rear lid -3- ( -arrow- ).





Removing balancing weight

2. Drill off buffer stops -1- on the balancing weight -2- using a 10 mm drill bit. The rotational speed for this step should be approx. 250 rpm.





Drilling off buffer stops

3. Stick foam rubber rings (4 x dia. 60 mm) -1- onto the drilled-off buffer stops -2-.





Sticking on foam rubber rings

4. Stick foam rubber rings (2 x dia. 50 mm) -1- onto the stops on the rear lid -2- in the area of the balancing weight threaded joint.





Sticking on foam rubber rings

5. Stick on washers.





Sticking on washers

5.1. Stick washers M6 -1- onto the bottom of the rubber mountings -2- using a commercially available adhesive.
5.2. Stick washers M10 -3- onto the top of the rubber mountings.
6. Stick buffer stops -1- onto the top washer -2-.





Sticking on buffer stops

Information

Coat the fastening screws with Loctite 241 screw-locking lacquer.

Information

When screwing on the balancing weight for the rear lid, use an open-ended wrench on the buffer stops to prevent them from turning.

7. Position balancing weight -2- on the rear lid -3- and secure with the fastening screws -1-. => Tightening torque: 9.7 Nm (7 ftlb.)





Installing balancing weight

Subsequent work

1. Install trim panel for rear lid. -> 708719 Removing and installing trim panel for rear lid - section on "Installing" 708719 Removing and installing trim panel for rear lid

Working times

53794900: Reworking balancing weight; Labor time 70 TU