Procedure
Procedure1. RHD with automatic transmission: Remove the data link connector (A) and the lower panel with air duct (B) on the driver's side.
2. Align the steering wheel and the wheels in the position for driving straight forward and secure the steering wheel to the instrument panel using fabric-backed tape. Remove the screw (A) that holds the steering shaft to the steering gear, press the steering shaft upwards and pull it loose from the steering gear.
3. Check that the cap for the power steering fluid reservoir is tightened. Plug the reservoir's vent hole, use a suitable plug from 82 92 948 Sealing kit.
NOTE: The power steering fluid reservoir is sealed to reduce fluid spill when replacing the sealing rings for the banjo nipples.
4. Remove the nut and the washer (A) from the rear engine mounting.
5. Raise the car.
6. Diesel: Remove the lower engine cover (A).
7. Diesel: Lower the exhaust system:
- Loosen the exhaust system's front nuts (A) slightly and remove the rear nut (B).
- Remove the bracket (C) in the oil sump.
- Remove the hose (D) for measuring pressure drop from the particle filter/rear catalytic converter.
- Remove the bracket (E) from the particle filter/rear catalytic converter.
8. Petrol: Remove the exhaust system's rubber mountings (A).
9. Lower the subframe at the rear edge:
- Mark the position of the subframe against the body.
- Remove the reinforcement plates (A).
- Slowly lower the subframe by removing the screws (B, C). Relieve the load with a column jack.
Petrol: 5-6 cm, measure between the rear mounting of the subframe and the floor of the car.
Diesel: 8-9 cm, measure between the rear mounting of the subframe and the floor of the car. 10. RHD: Remove the engine pad (A).
10. RHD: Remove the engine pad (A).
11. Replace the sealing rings for the banjo nipples:
NOTE: Use new sealing rings when fitting and replace one side at a time.
- Position a receptacle under the car.
- Wipe clean around the banjo connections and remove the delivery line (A) from the power steering. Remove the old sealing rings.
- Fit the delivery line (A), use new sealing rings (48 39 932).
Tightening torque 30 Nm (22 lbf ft)
- Remove the return line (B) from the power steering. Remove the old sealing rings.
- Fit the return line (B), use new sealing rings (49 05 253)
Tightening torque 30 Nm (22 lbf ft)
- Wipe clean any power steering fluid from the banjo connections.
- Remove the receptacle.
12. RHD: Fit the engine pad (A).
Tightening torque 26 Nm (19 lbf ft)
13. Fit the subframe:
- Raise the subframe with the column jack and insert the screws (C, B, A).
- Tighten the screws (C, B). Check that the subframe is positioned against the body in accordance with the markings
Tightening torque 100 Nm +45 degrees (74 lbf ft +45 degrees)
NOTE: The screws (C) to the subframe must not be mixed up with the others. The screws have a 20 mm head.
- Tighten the screws (A) for the reinforcement plates.
Tightening torque 65 Nm (50 lbf ft)
14. Petrol: Fit the exhaust system's rubber mountings (A).
15. Diesel: Fit the exhaust system:
- Fit the bracket (E) for the particle filter/rear catalytic converter.
- Fit the hose (D) for measuring pressure drop for the particle filter/rear catalytic converter.
- Fit the bracket (C) in the oil sump.
Tightening torque 25 Nm (18 lbf ft)
- Fit the front exhaust pipe (A, B), use a new gasket, 55 187 592.
Tightening torque 25 Nm (18 lbf ft)
16. Diesel: Fit the lower engine cover (A).
17. Lower the car.
18. Fit the washer and nut (A) for the rear engine mounting.
Tightening torque 47 Nm (35 lbf ft)
19. Fit the screw (A) that holds the steering shaft to the steering gear and remove the tape.
Tightening torque 30 Nm (22 lbf ft)
20. RHD with automatic transmission: Fit the lower panel with air duct (B) and the data link connector (A).
21. Remove the plug from the cap for the power steering fluid reservoir. 22. Fill with 93 160 548 Power steering fluid, and bleed the power steering system in accordance with WIS - Steering assembly - Power steering system - Adjustment/Replacement.
23. Check that there is no remaining leakage of power steering fluid.
Marking the modification identity plate (not US/CA)
After carrying out the procedure, box B1 on the modification identity plate must be marked. From and including M04 the car's Warranty and Service Book contains the "Table of Modifications". Mark the box with the number "7" if the procedure was carried out by the importer or with the number "8" if carried out by the dealer.
Fitting the modification identity plate (not US/CA)
NOTE: A modification identity plate must only be fitted where local directives require the marking of the car.
Fit the modification identity plate in accordance with WIS 9-5 M04 - General - General - Technical data - Plates and labels