Contents: Removal ↡ Installation ↡
Removal
1. Disconnect the negative battery terminal.
2. Remove the driver's side lower instrument panel trim panel to gain access to the master cylinder and pedal assembly.
3. Pull the floor mat back and cover the floor under the pedal to protect from spills.
4. To reduce fluid loss, use a clean syringe to remove fluid from the appropriate chamber of the brake system reserve reservoir until the level drops below the level of the clutch master cylinder intake tube.
5. Place a suitable container under the master cylinder to catch any spilled fluid.
6. Loosen the hydraulic tube fitting on the master cylinder and carefully pull the tube out. Plug the open ends of the tube and cylinder to prevent contamination and reduce fluid loss.
7. Carefully detach the brake pedal return spring (see fig. 7.7).
Fig. 7.7. Brake pedal mounting parts
A Hinge Bolt Lock
In Hinge bolt
With Brake Light Wire Plug
D Return spring bracket
8. Disconnect the wire plug from the brake light switch, then unclip the switch from the bracket on the pedal assembly.
9. Remove the retainer from the pedal pusher pivot bolt on the servo, then remove the pivot bolt.
10. Remove the four nuts securing the pedal assembly to the front of the engine compartment bulkhead (please note that these nuts also secure the brake booster), and a single bolt securing the assembly to the top of the bulkhead (see Fig. 7.10, a, b).
Fig. 7.10, a. Pedal assembly mounting nuts (shown by arrows)...
Fig. 7.10, b....and the mounting bolt (shown by arrow)
11. Pull the pedal assembly back from the bulkhead until the assembly is clear of the studs, then lower the assembly, disconnect the hydraulic hose from the master cylinder (be prepared for liquid to leak out).
[Article based on data from the website: MercedesMan]
12. Remove the unit from under the instrument panel.
13. Disassembling the unit is clear from Figure 7.13. Remember the location of all parts in order to assemble the unit correctly.
Fig. 7.13. Disassembled view of the clutch and brake pedal assembly
Installation
14. Installation is carried out in reverse order, taking into account the following points:
- a) Check the adjustment of the brake light switch as described in Chapter 9.
- b) When finished, bleed the hydraulic clutch system as described in paragraph 6.