Rear Brakes

M

Martin3500V8

New Member
Sorry I havent posted on here in a while ive been busy with my new job amongst other things but we took the P6 in for her MOT today and she failed on her rear brakes

001 Nearside Rear Brake recording little or no effort

002 Nearside Rear Parking brake recording Little Or No Effort

003 Parking Brake Effiencey Below Requirements

would I be right in thinking that she needs new or recon calipers each side, if so do you know where from, i just looked at JRW and they want £275 for them! when we bought the car a few years back the last owner said the rear calipers were part seized so im guessing its ime for completely new ones :-(

Thanks for all your help guys!

Martin
 
It's a caliper problem, but that doesn't necessarily mean they need replacing. Seal kits are available and mechanical parts can be taken from other calipers. Really you need to look and see what the problem is, and then make a decision whether new calipers are the answer. As for doing the caliper overhauls they're no problem if you know what you're doing, but plenty if you don't! :D
 
Same fault as mine 3yrs ago, once I had removed the caliper,and worked out how it all worked ??? ,I found that the inner ratchet and pawl mechanism that adjusts the handbrake,and takes up pad wear was not operating. I managed to adjust it with a small screwdriver on the ratchet and hey presto they worked, and it got its mot ok, but as the mechanism was worn,it tended to de-adjust as the pawl was catching on burrs on the worn ratchet wheel ??? .
I managed to get hold of a 2000 rear axle with calipers still attached off ebay for a winning bid of .99p :p ,also,luckily,it was local to me.
I stripped and cleaned them to make a good one,"the seals were fine" not had a problem since :p

MARTIN!!,
if you are south london,ish,have a word with rich at p6 spares near newbury!! nice chap,knows his p6's..Have you got a tame mechanic ???
 
My offside caliper is a pain as well, it doesn't always self adjust.

So the piston gets pushed out to its full extent and neither the foot or hand brake work.

Before you start dismantling every thing, get a big screw driver or leaver and push the piston back in.

Then get a friend to operate the hand brake, if you are lucky you hear a click as it self adjusts.

When you pull the hand break on there is a leaver ( item 25 handbrake cam leaver in the manual ) that moves, if the brake isn't correctly working the leaver travels fully to a stop, if it is working it stops half way.

Let us know how you get on

John

PS The other thing you could try, is remove the brake pads and unscrew the piston one turn, has the same effect as self adjusting.

The only draw back with this method is a single turn of the piston is virtually the same amount of movement as the hydraulic movement - so you may not be able to get the pads back in

You really need a pit or 4 post lift for this
 
Helps to have a caliper adjusting tool to hand,and have the bit of metal on the piston to attach it to still intact,you can play with the adjustment so you can "just" slide both pads in without using excessive force,"ie a hammer" its a FF'in fiddly job,but very satisfying once youve mastered it :p good luck
 
Hello Again Everyone! Thanks a lot for all your help! HarveyP6 said he could put me in contact with a P6 specialist close to me so I'll see what happens there and hopefully it can all get sorted! but in the mean time that advice certainly gives me something to do in my lunch breaks in work on the 4 poster ramp (if they let me >_<), still feel a bit gutted though as from what records show its probably the first MOT she has ever failed in her life but its only minor so im pleased aswell and hopefully a new coat of Davos white by the end of the year aswell and get them damn sills finally sprayed black as they should be! lol oh well all this just gives me practise for when i buy my Own P6 before the end of the year!, thanks again for all your help guys!


Martin
 
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