Hello,
Just replaced my brake pads and two of my discs. I found out that the rear left caliper was stuck and did a rebuild, taking the piston out and cleaned the inside. Now Im having large play in pedal and the car is not braking on the rear left and the front right side. I have bleed the system using the work shop procedures, and Im pretty sure that it is no air in the system although it feels like it.

My question is: Could the problem be the rear left caliper or am I having a problem somewhere else (I.e internal leakage in the master cylinder)?

Regards,
Henrik

 

Welcome to the forum Henrik,

I've moved your question from General Tech Help to X-Type forum. Members here with the same model will be able to help.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some info about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

Henrik, it is sounding like you are having a lot of play due to the caliper not being properly adjusted. I would first start with trying to cycle the e-brake lever up and down say 20 times. You most likely will feel the e-brake lever going all the way up initially and after some number of cycles, you will feel it start to catch at a lower point. When you feel the lever starting to catch at a lower point, then you know your calipers are set to the proper position. You will then also feel the pedal return to its proper position.

If you are still feeling the soft pedal, then this would indicate that you have air in the system somewhere and a complete 4 wheel bleed would be needed.

 

Thank you Thermo for your reply. I have performed the operation directly on the caliper, but I will also try it from the e-brake. When i operate the e-brake on the caliper, I can see movement on the piston, but It is always going back (not adjusting).

I think you just confirmed that it is probably still the caliper that is the issue.

Regards Henrik

 

Henrik, if the pad is too far from the rotor, the piston will be able to turn and return to its original position (ie, does not adjust). If you look on the piston, you will see 2 grooves cut into the piston. These need to align with the pins on the pads. This will prevent the piston from being able to turn and will therefore allow the adjuster to move the pads to the proper position.

For the moment, you can probably use a screw driver to turn the piston to the correct position (ie, pins inside the grooves) and then you can manually operate the e-brake lever on the caliper in question till you can get things close, using the screw driver to prevent the piston from turning. Once close (ie, pins remain inside the groove), you will be able to operate the e-brake lever till you get proper adjustment.

 

You might be right about air still in the system .

Did you remove the left rear caliper to o/haul it , if so , how much brake fluid did you loose from the line ? .