Lc front brakes lock on.
#1
Posted 19 July 2019 - 02:30 PM
#2
Posted 19 July 2019 - 07:06 PM
You don't happen to have a 4 wheel drum brake master cylinder fitted by chance?
There's a residual pressure valve needed for drum brakes that keeps about 10lb of pressure in the line.
If there's one fitted to the front brakes it would cause the front brakes to lock on.
The valve is fitted under the brass seat that the brake line seals on.
https://www.freeases...heck-valve.html
#3
Posted 19 July 2019 - 09:37 PM
Edited by evl666, 19 July 2019 - 09:39 PM.
#4
Posted 21 July 2019 - 12:43 AM
When they are locked on pull the vacuum line out of the booster & see if they release.
#5
Posted 21 July 2019 - 08:12 AM
Cheers
#6
Posted 21 July 2019 - 08:57 AM
Were the calipers with new pads fitted a very neat fit over the rotors?
#7
Posted 21 July 2019 - 07:48 PM
Depends on which you have ,
My brakes did the same thing , so swapped the shorter push rod for the longer version , problem solved ,
Yes big nut master cyl and double diaphragm booster.
#8
Posted 22 July 2019 - 12:39 AM
#9
Posted 27 July 2019 - 04:02 PM
#10
Posted 28 July 2019 - 11:57 PM
Sorry guys....I’ve been busy but haven’t had a chance to touch the car. At the time I unscrewed the master from the booster and it made no difference so it’s not the push rod length. Yes the pads and discs are new and were a tight fit but still spin freely when cold. I’m going to take it out for a short drive and see if I can get to to lock on then have another fiddle.
Mine was like this when I got it to the point where I could push it forwards but not backwards.
A caliper rebuild fixed it for me. The pistons weren't going back in the bores properly.
#11
Posted 29 July 2019 - 12:27 PM
#12
Posted 30 July 2019 - 09:20 PM
That’s what I’m thinking Potter. Was going to pull the brake calipers off and wack some new pistons in there and try again. I’ve already put a new seal kit through them
Need to let them soak in metho, give the bores a gentle rub if there is any pitting or rust, and also use a liberal amount of rubber grease when you put them all together.
That's what Dattoman told me and it seemed to work quite well.
#13
Posted 02 August 2019 - 07:09 PM
#14
Posted 02 August 2019 - 09:37 PM
#15
Posted 03 August 2019 - 03:22 AM
#16
Posted 04 August 2019 - 05:18 PM
Question...just want to check something while I’ve got the calipers apart....the seal that sits inside the piston bore of the calipers is that tapered and goes in a certain way or is it my imagination?
Verniers might help you determine that, or pm or ask datto aswell maybe ?
#17
Posted 18 August 2019 - 06:03 PM
#18
Posted 18 August 2019 - 06:17 PM
#19
Posted 18 August 2019 - 06:40 PM
#20
Posted 20 August 2019 - 03:21 PM
Great detective work agent 86
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users