2000XKR break job

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2000XKR break job

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Jaguar >> Jaguar Models >> XK8 & XKR >> 2000XKR break job

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2000XKR break job - 5/14/2008 1:23:53 PM

CB00JAGUAR

Posts: 34
Joined: 4/10/2008
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I NORMALLY USE A LARGE "C"CLAMP TO COMPRESS THE CALIPER'S PISTON ASFTER I REMOVE THE RESIVOR CAP.
WILL DOING THIS HURT OR DAMAGE THE ABS BREAKING SYSTEM ON A 2000XKR CONV.?
ANY TIPS OR WATCH OUT FOR'S WOULD BE GREAT.
THANKS,
CB

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RE: 2000XKR break job - 5/14/2008 4:38:40 PM

JagtechOhio

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I think you're in over your head. Please call me for backup.

As for the brake job, open the bleeder screw with a hose attached and expell the fluid as you retract the caliper piston. This prevents overfilling the master cylinder, and forcing contaminants back through the ABS modulator. Pump up the pedal and top up the fluid when the pads are replaced.

(in reply to CB00JAGUAR)

Post #: 2

RE: 2000XKR break job - 5/14/2008 7:30:06 PM

test point

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. . . and evacuate the master cylinder reservoir with a turkey baster, or something simuliar, and refill with fresh fluid to prevent having to pump all the old stuff through the system.

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Post #: 3

RE: 2000XKR break job - 5/14/2008 7:50:30 PM

JagtechOhio

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Thanks for proofing my answer, it was intended for the question that was asked.

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RE: 2000XKR break job - 5/15/2008 3:30:29 AM

rscultho

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In my experience, anytime you open the bleeder screw you take the chance of introducing air into the caliper piston assembly, and this will make your pedal spongy. Even if you connect a hose, the hose needs to be completely filled with fluid - devoid of air. It is unsafe to have air in your brake lines. It is very important that you don't introduce air into your brake lines (you should remove it by bleeding the system).

You can buy an inexpensive "one man" brake bleeding tool, which is a hand held vacuum device that will "suck" the brake bluid out without depressing the pedal.

This is the way I do it if I don't plan on bleeding the system. I get a glass jar and pour about an inch of brake fluid in the bottom. I connect a hose that fits snuggly to the nipple of the bleeder screw. Put the other end of the hose in the brake fluid in the jar - ensure the end of the hose is submerged in the fluid. Put pressure on the pistons with the C Clamp, and then open the bleeder screw and close it quickly. This will allow the fluid to escape from the calliper into the hose. Repeat this procedure until the pistons are pushed back in - seated fully.

By submerging the hose in the fluid, and if you don't get the bleeder screw closed quickly enough, you won't suck air back into the caliper when the presure "reflexes". When the pressure reflexes and pulls back it will suck fluid instead of air.

If you plan on bleeding the system after you do the brakes, then don't worry about the air, since you will be removing all the air from the lines when you bleed the system.

(in reply to JagtechOhio)

Post #: 5

RE: 2000XKR break job - 5/15/2008 5:21:17 AM

CB00JAGUAR

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Joined: 4/10/2008
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thank you for the many different thoughts, but lets stay with the question.
again will very slowly compressing the caliper piston hurt the abs system?
If you don't know it's o.k.
as far as bleeding the system if we DON'T let air in, their's no need.
FYI the best system for bleeding breaks is a pressure bleed.
you can buy one or have the dealer or garage do it.
please back to the question!

(in reply to rscultho)

Post #: 6

RE: 2000XKR break job - 5/15/2008 6:38:48 AM

Dennis

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I think they all answered your question with concerns about pumping crud from the caliper back up into the system..But no..it will not hurt anything per say as far as the funtion of the ABS...But Like the other guys here are saying, I would get all the old fluid out, since it's probably the original ...Brake Fluid unless it is DOT 4 or 5 (synthetic), will attract and absorb moisture...The calipers are the lowest point in the braking system and naturally the place where most the crud and contaminations will settle to.

< Message edited by Dennis -- 5/15/2008 6:40:12 AM >

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RE: 2000XKR break job - 5/15/2008 6:48:24 AM

CB00JAGUAR

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forgive my ignorance, so your saying my "OEM" break fluid at 70k miles has degraded and developed crud that should be flushed from the caliper and/or the break system. O.K., what type of break fluid does a 2000 xkr's use and how much should be flushed through or just added.
thanks to all

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Post #: 8

RE: 2000XKR break job - 5/15/2008 7:19:14 AM

Dennis

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I don't know what exactly the type the XKR uses..I'm sure a dealer's parts dept can tell you...But yes, at 70K miles, the original fluid is pretty funky...I purge mine completely everytime I do a Brake job...There is also a specific pattern you should use to bleed the brakes system....The X type is like this...

_____________________________

03 Jag X 3.0L loaded BRG
Senility is to forget the people I don''''t like and having the pleasure of meeting the ones I do.

(in reply to CB00JAGUAR)

Post #: 9

RE: 2000XKR break job - 5/15/2008 7:36:30 AM

CB00JAGUAR

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thanks!!!

(in reply to Dennis)

Post #: 10