Northy
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| posted on 1/4/05 at 08:00 AM |
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Fitting Sierra rear calipers
Hi guys,
I tried to fit my Sierra rear callipers last night and can’t get them over the pads. I have rotated the piston clock wise to get it to go in as far
as possible (on handbrake adjustment), but can’t get the whole piston to go in any further. Any ideas please?
Cheers
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing! 
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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andrew.carwithen
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| posted on 1/4/05 at 08:40 AM |
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Graham,
What did you use to wind in the pistons?
I used a pair of circlip pliers located in the 'v' shaped cut outs.
They were pretty stiff and took quite a bit of persuasion to rotate and that is on recon'd callipers.
But they do wind in quite a significant amount.
I also had to line up one of the 'v's so that it located with the raised 'stop' on the back of the pads in order for the
calliper to slide fully home over the pads.
Andy.
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James
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| posted on 1/4/05 at 09:18 AM |
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Northy,
I think you just need a bit more brute force and ignorance! 
I posted about this at the time of doing mine as couldn't understand why they weren't going anywhere- seems you just need to push harder!
You aren't actually winding anything in as far as I can tell- otherwise you'd eventually run out of thread! It's just the turning
that allows it to go in. I balanced the calliper on top of the chassis rail in the end so I had something decent to push against.
HTH,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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NS Dev
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| posted on 1/4/05 at 10:25 AM |
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Yes you are winding something in, the pushrod for the handbrake mechanism.
They can be tricky to push back/wind back, but most likely problem has already been mentioned above, the bump on the pad needs to align with one of
the dips in the piston or it will stick out too much.
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RazMan
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| posted on 1/4/05 at 11:20 PM |
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I usually resort to using a G clamp to push back stubborn pistons. Watch your brake fluid level if it is plumbed in though - it may overflow
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Liam
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| posted on 2/4/05 at 02:36 AM |
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Hey northy! That's my back end so I kind of feel responsible! If memory serves the handbrake mech on both calipers was sound and
shouldn't need attention. Continuing to wind the pistons in will only work to a point - when all movement in the handbrake mechanism is taken
up. After that you just need good old brute force on the piston - the same as any front caliper.
I took my rear calipers apart and simply reassembled them after cleaning - that'll teach you how they work (and make them work a lot better if
you clean each part decently). Definately reccommended - wouldn't you like to know how everything on our car works?
Oh - you might want to borrow 'ford tool xxxxx blah blah', which I made from a spare caliper, to do so. Need good circlip pliers too.
Liam
[Edited on 2/4/05 by Liam]
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Northy
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| posted on 2/4/05 at 04:19 PM |
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Hi Liam,
Yeah handbrake do-dabs work on both calipers I cheacked tat, and they even wind in well to adjust the handbrake. I've bought a big G clamp today
as I didn't have one big enough, I'll give that a go!
I'd rather not strip them and make more work as I want to tax the car again at the start of next month! Weathers nice today, wish it was
mobile.... 
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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