Subframe Mounting Threads, Repairing

Subframe Mount Thread

=> [ Contents of Thread Repair Set ]

=> [ Threads, Repairing ]

CAUTION!
Observe safety precautions. Refer to

• Subframe is already removed. Refer to => Suspension,

Wheels and Steering 40 Removal and Installation

• In the example, thread repair on this vehicle is described for left front retaining bracket for subframe and is to be employed at the other 3 retaining brackets accordingly as necessary.

Special tools, testers and auxiliary items required

• Thread Repair Set M 12x1.5 (VAS 6058)

• Drill (VAS 6267)





1 Threaded Plate (in Retaining Bracket for Subframe)

• The threaded plate is not a replacement part and can be serviced only one time if damaged.

• If damaged again, replace the retaining bracket. Refer to => [ Subframe Mounting Bracket ] Removal and Replacement.

2 Helicoil Thread Insert

Contents of Thread Repair Set





1 Spiral Drill dia. 12.5 mm

2 Tap M 12 x 1.5

3 Installing Spindle

4 Thread Insert M 12 x 1.5 x 24 ( (VAS 6058/1))

5 Peg Breaker with Magnetic Tips

Threads, Repairing

Drilling

CAUTION!
Wear protective eyewear when drilling out the threads.

- Drill out the threads with the spiral drill.





• For drilling and grinding, use (VAS 6267).

• While drilling, drill must be held by a second person using an additional handle.

• Do not angle the drill.





Cutting

CAUTION!
Wear protective eyewear when cutting the thread and when cleaning the threaded bushing with compressed air.

- Cut the threads with the thread tap.





- Clean threaded bushing (blow with pressurized air).

Thread Inserts, Inserting

- Turn the threaded insert - 3 - onto the spindle until the drive peg - 2 - makes contact on drive tab - 1 - of installing spindle.





• Thread insert must be able to be turned easily.

- Screw the threaded insert into the threaded plate until the threaded insert is seated flush with the outer edge of the threaded plate (check visually).





- Then tighten the threaded insert by a 1/4 turn further.

- Remove the spindle.

- Break off thread insert driver tang using tang breaker.





- Install the subframe (tightening specification). Refer to => Suspension, Wheels and Steering 40 Removal and Installation.