clutch master cylinder

[635csiluver]

where is the clutch master cylinder on the 325is? and how do i get to it?

[FruityOne]

hmm its somewhere on the left side of the engine compartment against the firewall if im not mistaken i think to get to it you would need to be underneath the car

[DesmoBob]

Writeup from Bentley:

1. Disconnect negative (-) battery terminal.

2. Remove brake fluid reservoir cap. Using a clean syringe, remove brake fluid from resevoir.

3. Disconnect fluid supply hose from master cylinder. Place a pan under hose to catch any excess fluid.

4. Working in engine compartment, disconnect fluid line fitting from master cylinder.

5. Working in passenger compartment, remove lower instrument panel trim above pedal cluster.

6. Disconnect clutch pedal from clutch master cylinder push rod by removing clevis pin locking clip and slide out clevis pin.

7. Remove master cylinder mounting bolts. (see picture below)

8. Installation is reverse of removal. Fill fluid resevoir with clean fluid. Bleed clutch hydraulics as described earlier. Connect negative cable to battery last.

[DesmoBob]

as mentioned in the master cylinder writeup, you will need to bleed the system at the end. here is the writeup from bentley:

1. Remove brake fluid resevoir cap. Using a clean syringe, remove brake fluid from resevroir. Refill resevoir with clean fluid.

2. Attach pressure brake bleeder to fluid resevoir.

Caution - Do not exceed 2 bar (29 psi) pressure at the fluid reservoir when bleeding or flushing the hydraulic system.

3. Connect a length of hose from clutch slave cylinder bleeder valve to a conntainer. (see picture below; clutch slave cylinder bleeder valve on left side of ransmission)

4. Open bleeder valve and allow brake fluid to expel until clean fluid comes out free of air bubbles.

5. Close bleeder valve and disconnect pressure bkleeding equipment from fluid reservoir. Hose on bleeder valve remains connected.

6. Slowly operate clutch pedal about 10 times. Fill reservoir with clean fluid as necessary.

7. Unbolt slave cylinder from transmission.

8. Position slave sylinder so that bleeder valve is facing up (highest point).

9. Open bleeder valve and slowly push slave cylinder pushrod all the way in. Close bleeder valve and slowly release pushrod. Repeat procedure until fluid runs out clear and without bubbles.

10. Disconnect bleeder hose. Install slave cylinder to transmission. Add clean brake fluid to reservoir as necessary. Check clutch operation.

Tightening torques:
Clutch slave cylinder to transmission: 22 Nm (17 ft-lb)

[DesmoBob]

note: don't press the clutch pedal while the slave cylinder is dismounted.