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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Wed Aug 07, 2013 8:26 pm |
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Hey guys it’s been a while since IV posted... But I’m having a really annoying problem with my zook, the left hand front brake just keeps dragging it doesn't seem to be wearing the caliper or the rotary unevenly. It was how ever in the past, but I rebuilt my front hubs and replaced all the king ping bearings and rotors and pads IV even changed the anti-rattle clips for brand new ones (for fricken $13 each x 4)
Please help I just need this thing soughed out ASAP
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want33s

az supporter
Joined: Fri Nov 16, 2007 10:30 pm Posts: 8134 Location: Sunshine Coast Qld
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 Posted: Wed Aug 07, 2013 8:33 pm |
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Sounds like the slide pins need a cleanout/greasing.
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Red89
Joined: Tue Jan 12, 2010 10:30 pm Posts: 2801 Location: Perth
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 Posted: Wed Aug 07, 2013 8:35 pm |
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Caliper piston full of mud ? Take the caliper off, see if you can move the piston by hand or try blowing some air down the inlet with a block of wood where the rotor would sit see if it moves
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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Wed Aug 07, 2013 8:37 pm |
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want33s wrote: Sounds like the slide pins need a cleanout/greasing. I should have mentioned Iv done that and used moly grease,thanks anyway want33s
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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Wed Aug 07, 2013 8:38 pm |
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Red89 wrote: Caliper piston full of mud ? Take the caliper off, see if you can move the piston by hand or try blowing some air down the inlet with a block of wood where the rotor would sit see if it moves ill try that tomorrow
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mrw82

az supporter
Joined: Tue Jul 03, 2007 11:30 pm Posts: 1350 Location: stuck in a hole. not off road, just deception bay.
Vehicle: snotbox, 84 LWB sierra 1 litre
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 Posted: Thu Aug 08, 2013 5:50 am |
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Have you rechecked wheel bearing tension? Does the piston move freely? Do the slide pins move freely?
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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Thu Aug 08, 2013 6:53 am |
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Thanks mrw82 yes but the king pins weren't check with fish scales im buying some today to check .(what weight? ?) And the slides move freely , im confused when u say does the piston move freely I know you can't easily push it in out even with no fluid in it ?
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mrw82

az supporter
Joined: Tue Jul 03, 2007 11:30 pm Posts: 1350 Location: stuck in a hole. not off road, just deception bay.
Vehicle: snotbox, 84 LWB sierra 1 litre
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 Posted: Thu Aug 08, 2013 8:15 am |
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Use a g clamp to push it in then push the pedal (with caliper and pads reinstalled onto disk) it really shouldn't take much force to move with a g clamp.
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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Thu Aug 08, 2013 9:13 am |
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I have a caliper here that I reconditioned I might swap it strait in .its about the only thing I haven't done 
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KEENSY85
Joined: Wed May 09, 2012 12:46 am Posts: 1742 Location: north brisbane
Vehicle: 1985 lwb sierra UTE
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 Posted: Fri Aug 09, 2013 10:32 am |
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Sorry it took me do long to report back. But I changed the the caliper to the reconditioned one and its better but It still happens but know if I drive on the wrong side of the road it drags so im guessing I need to tighten my bearing back lash just a tad more. My leaking cylinder is fixed too it turned out it is shorter then its supposed to be like shorter then the smaller rear cylinders of the two different for sierras im guessing manufacturer fault 
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