Stu
Unfortunately there could be many causes for your brake drag. More
details are needed to make a long distance call from the List.
Pads too thick - quick look @ what I have around indicates the total
thickness of the pad and backer plate = .60" but I don't know the original
spec or tolerance.
New rubber wrong thickness or style
New rubber is not placed correctly but I would think you would see a fluid
leak in this case
Contamination of the brake fluid
Bad return spring in the master; master is hanging up
Brake servo hanging up
Calipers hanging up
Brake pads hanging up
The first step I would do is take a short trip with several brake
stops, return and take a look at the brakes. If they are real bad you might
not make it past your driveway.
The best case would be that the caliper pistons and pads were
slightly at an angle and just needed to be trued with some real brake
action. If the brakes are still dragging I would put the old set of pads or
at least a thinner set of pads in to see if they are also dragging. If the
brakes are still dragging then it is probably not the pads but something up
the line somewhere. Now you need to inspect and evaluate each part of the
system for function, correct operation and if both side are acting the same
or not.
This is one of those cases where it would be nice to know the original
specification and dimension of parts for comparison. I believe this
information is available at the Rootes Archive in England but I don't know
how readily available it is online at this time.
Ron Fraser
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Stu Brennan
Sent: Thursday, June 23, 2011 8:15 PM
To: Tigers@autox.team.net
Subject: [Tigers] Brake question
So I'm just finishing up a brake job on the Tiger. All new rubber bits in
the master, slaves and calipers. I got it all back together and bled, no
leaks yet. I had to grind down the sides of the pads until they fit loosely
in the calipers. No surprise there, I've had to do this on my Subaru, the
Buick, etc.. So I know the pads are free vs the calipers. But there is
still significant drag on the disks when the brakes are off. The culprits
seem to be the outer seals on the pistons. They bulge up enough that they
are pushing on the new pads, causing the drag. The drag is high enough that
I suspect that I won't get out of town before the disks are glowing red.
Has anyone else encountered this? Does it go away quickly once they heat up
the first time? Has anyone encountered pads that are too thick? Any ideas
out there? I'll probably drive it for the first time with the new brakes
tomorrow night or Saturday, with a show to go to Sunday... And I'd hate to
put the old pads back in.
Stu
_______________________________________________
tigers@autox.team.net
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe:
http://autox.team.net/mailman/options/tigers/rfraser@bluefrog.biz
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.449 / Virus Database: 271.1.1/3719 - Release Date: 06/23/11
06:34:00
_______________________________________________
tigers@autox.team.net
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|