Front Seat

Replacing Threaded Bush For Seat Connection

Preliminary work

Preliminary work for body repairs (without straightening bench)

1. Remove accessories in the repair area.
1.1 Remove accessories in the repair area according to the extent of damage to the vehicle.

2. Cover the accessories adjacent to the repair area on the vehicle.
2.1 Cover all accessories remaining on the vehicle and the adjacent areas with fire-proof protective covers.

3. Reshape connection area of the sheetmetal parts to be replaced. See Information on aluminium repairs

4. Expose joint areas.
4.1 Remove undersealing, paint, etc. from the joint areas of the body with a hot-air gun or rotary brush.

Technical values







Installing threaded bush for seat connection







1. Preparing the threaded bush for installation







1.1 Grind the threaded bush -1- bright on the contact surface with the seat cross member.







2. Inserting threaded bush.
2.1 Insert a new threaded bush -1- fully into the seat cross member from below.
2.2 Set the threaded bush -1- at a slight angle.
2.3 Insert an M8 x 120 bolt -2- into the seat cross member from above.
2.4 Screw the bolt -2- approx. three revolutions into the threaded bush -1-.
2.5 Pull the threaded bush -1- with the screw -2- up to the seat cross member.







3. Position the threaded bush and weld it into place.
3.1 Align the threaded bush -1- in the middle.
3.2 Weld the threaded -1- insert into the existing holes using MIG welding.











4. Grinding the spot welds flat
4.1 Unscrew the bolt and grind the spot welds flat.

5. Clean spot-welded joints and sheetmetal flanges with a wire brush.
6. Prime welds and unpainted areas of the body with 2K primer.
7. Sealing flange areas with body sealant.
8. Add cavity preservation inside the seat cross member.

9. Closing the drain hole.
9.1 Close the drain hole by inserting a 30-mm diameter plug -3- from below.







10. Restore standard seal with body sealant
11. Restore standard underbody protection with underbody sealing compound