Genuine BMW Z4 Clutch Master Cylinder

BMW Z4 Clutch Master Cylinder Parts Questions & Experts Answers

• Input Cylinder Clutch
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  Q:

  How to remove and reinstall the clutch master cylinder on BMW Z4?

  Posted by Mustafa O.

  A:

  As for any fluid which is ingested, get into the eyes, it is worthy of note that some types of brake fluid are flammable and may in their contact with hot part catch fire; it is therefore advisable when working on any hydraulic system that one should take precautions as though handling gasoline on the risk of fire which may occur. Brake fluid is also a potent paint remover and is known to harm plastics - any contamination should be rinsed clear with sufficient quantities of clean water. Furthermore, brake fluid is inclined to corrossion since it is hygroscopic, that is, absorbs moisture from the surrounding air and due to this old fluid ought to be regarded as contaminated. On topping up or when replenishing it, ensure you use the fluid type recommended here, from a newly opened sealed bottle. To take off the brake fluid reservoir cap it is necessary to draw out the sufficient amount of brake fluid to make it below the connection of the fluid hose with the clutch master cylinder at the same time one should notempty the container completely to avoid pulling the air into the hydraulic circuits of the brakes. Remove the hose connecting the clutch master cylinder to the brake fluid reservoir, just expect that there will be some spillage, so you plug the fitting end of the hose to avoid any entry of dirt. Within the vehicle, remove the screws and the lower dash trim panel for driver side, reconnect electrical connector then, to remove the clutch pedal switch place the pedal and do the following: pull out the red sleeve, press the clips, and pull the switch from its bracket. Pull the two ends of the pushrod together and push out the master cylinder pushrod pivot pin of the clutch pedal and unbolt the master cylinder of the pedal bracket in the footwell. Turn the master cylinder upside down and unscrew the hydraulic pressure hose where it joins the master cylinder using a small screwdriver; gently detachment the fluid supply hose through the firewall. Check the master cylinder for signs of leakage or damage and if the master cylinder has developed a problem there is no spare part to fit just a new master cylinder has to be bought. This is done in reverse order to removal with much care given to the master cylinder fluid supply hose, after the installation, the fluid level in the reservoir is checked and topped up and the clutch hydraulic system bleed.

  Answered by BMW Parts Specialist Noah / Sep 16, 2025