Changing rear Alcon rotors ‘08 XKR
#1
Changing rear Alcon rotors ‘08 XKR
So I’ve have searched the forums and really haven’t found anything as to how to remove the Eparking brake assembly from the rotor. I am familiar with the caliber removal but is there something I need to know specifically on how to remove E-parking brake assembly.
My rotors are heavily scored so I have a replacement set of Eurospare identical rotors. I am also installing Kevlar/carbon pads all the way around from Porterfield R4-S their Street version of racing pads.
I just need to know about any quirks / tricks there may be with that parking brake removal / reinstall procedure.
Thanks in advance!
My rotors are heavily scored so I have a replacement set of Eurospare identical rotors. I am also installing Kevlar/carbon pads all the way around from Porterfield R4-S their Street version of racing pads.
I just need to know about any quirks / tricks there may be with that parking brake removal / reinstall procedure.
Thanks in advance!
#2
No sure about removal but if not a very deep lip, think about having them professionally skimmed then you can renovate the centres by painting. My experience is that the aftermarket 'copies' are utter rubbish. They might look the same but if you look on the expensive originals, on the edges there are notches. This is for balancing due to the large diameter.
The aftermarket ones don't have this and can suffer with vibration!!
As the rears don't brake much, really suited to a Refurb, any good manufacturing shop can professionally skim them especially if they skim heads! Not usually a lot. Not much material is removed so usually will keep the crescents intact. Not sure of the cost of OEM rears but the fronts are £1,200 so should be good!
The aftermarket ones don't have this and can suffer with vibration!!
As the rears don't brake much, really suited to a Refurb, any good manufacturing shop can professionally skim them especially if they skim heads! Not usually a lot. Not much material is removed so usually will keep the crescents intact. Not sure of the cost of OEM rears but the fronts are £1,200 so should be good!
#3
I do understand the use of machining the old rotors as I have always done this in the past as well as working in a brake shop in my earlier years. However, there is over .025 of lip top and bottom both sides. So new rotors are in order.
I need to know about removing the e-brake parking caliber on these cars and the quirks or newonceses associated with removing and reinstalling the parking brake caliber
I need to know about removing the e-brake parking caliber on these cars and the quirks or newonceses associated with removing and reinstalling the parking brake caliber
#4
I do understand the use of machining the old rotors as I have always done this in the past as well as working in a brake shop in my earlier years. However, there is over .025 of lip top and bottom both sides. So new rotors are in order.
I need to know about removing the e-brake parking caliber on these cars and the quirks or newonceses associated with removing and reinstalling the parking brake caliber
I need to know about removing the e-brake parking caliber on these cars and the quirks or newonceses associated with removing and reinstalling the parking brake caliber
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I'm thinking the OP is looking for the procedure for removing the cable from the e-brake caliper. I recall somewhere in this form someone who had don a rear brake job and described how to remove the cable and also how to reset it after replacing the rear pads. The manual I believe tell you to set the E-brake using the Jaguar computer to the retracted position then remove the cable with a special tool. Also there was a warning of making sure you put the shift lever in N before doing the job and also removing the neg. battery cable. The caliper removal should be straight forward and so should be the removal of the rotor. I think with the Alcon calipers all you need to do is push in the pistons as opposed to using the twist and turn method. Try the search function and see what comes up.
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If it's anything like an X350 you should be able to just release the handrake. Then disconnect the battery with the car in park. Then remove the handbrake calipers, wind in the pistons, fit the new pads.
Then once its all bolted back together again, refit the battery and pull the handbrake up to engage. Then dis-engage and engage it a couple of times and it should work fine.
Then once its all bolted back together again, refit the battery and pull the handbrake up to engage. Then dis-engage and engage it a couple of times and it should work fine.
The following users liked this post:
‘Oleguy (04-30-2018)
#15
Guys I an not looking to replace the pads in the parking brake. I just want to remove the assembly so I can replace my rotor and hydraulic caliber pads.
And I just don’t understand how a parking brake pad can wear out in these cars. You put car in park while holding foot on brake, pull up Pbrake lever, release your foot off brake pedal exit car...I mean the pads never or should never see wear.
Stepping on and holding brake pedal while engaging Pbrake is only to hold car till the Pbrake gets engaged. Am I missing something...?? I confused !?
And I just don’t understand how a parking brake pad can wear out in these cars. You put car in park while holding foot on brake, pull up Pbrake lever, release your foot off brake pedal exit car...I mean the pads never or should never see wear.
Stepping on and holding brake pedal while engaging Pbrake is only to hold car till the Pbrake gets engaged. Am I missing something...?? I confused !?
#16
IIRC, and I might be wrong, but I think there was a TSB or something for the Brembo parking brakes on the S-Type R & XJR where they wouldn't fully disengage properly and would lead to excessive parking brake pad wear. Not positive if it also applied to the XKR, but the parking brake calipers were almost identical in form and function so it's a distinct possibility. I'll see if I can find the related threads & post a link
The following users liked this post:
‘Oleguy (05-02-2018)
#17
If it's anything like an X350 you should be able to just release the handrake. Then disconnect the battery with the car in park. Then remove the handbrake calipers, wind in the pistons, fit the new pads.
Then once its all bolted back together again, refit the battery and pull the handbrake up to engage. Then dis-engage and engage it a couple of times and it should work fine.
Then once its all bolted back together again, refit the battery and pull the handbrake up to engage. Then dis-engage and engage it a couple of times and it should work fine.
I've changed the Alcon rotors on two separate vehicle
#19
Guys I an not looking to replace the pads in the parking brake. I just want to remove the assembly so I can replace my rotor and hydraulic caliber pads.
And I just don’t understand how a parking brake pad can wear out in these cars. You put car in park while holding foot on brake, pull up Pbrake lever, release your foot off brake pedal exit car...I mean the pads never or should never see wear.
Stepping on and holding brake pedal while engaging Pbrake is only to hold car till the Pbrake gets engaged. Am I missing something...?? I confused !?
And I just don’t understand how a parking brake pad can wear out in these cars. You put car in park while holding foot on brake, pull up Pbrake lever, release your foot off brake pedal exit car...I mean the pads never or should never see wear.
Stepping on and holding brake pedal while engaging Pbrake is only to hold car till the Pbrake gets engaged. Am I missing something...?? I confused !?
The following users liked this post:
‘Oleguy (05-04-2018)
#20
I had a non-Jaguar workshop do the pads on the rear of my XJR (with Brembo's, same park brake arrangement as Alcons) a while back, the guy wound the park brake pistons all the way in and the park brake calibration got screwed up and the park brake jammed on, the only way to release it was with the SDD diagnostic tool, so be careful!