Member Since: 03 May 2016
Location: Waterford
Posts: 23
New front disk red hot after replacing
Hi all, I just finished fitting two new front hub assemblys and two new disks and pads. After coming back from a 10min test drive I noticed the near side disk was roasting hot and smelling quite hot too. The offside one seems fine and wasn't too hot to touch. I'm glad I only went for a short spin now! Any ideas what the cause could be? Has anyone ever experienced this before after fitting new parts? [/code]
29th Apr 2017 2:47 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
Sticking caliper ?
29th Apr 2017 2:58 pm
Kilovolt
Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1017
At a guess I would say binding caliper?
Usually ends with replacing the caliper as it isn't worth overhauling the one(s) you have. If you decide to change then change both sides at the same time.
Good luck."Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"
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29th Apr 2017 3:00 pm
Jodysutts
Member Since: 03 May 2016
Location: Waterford
Posts: 23
Thanks for replying. Il take off the calliper again and see was it something I did wrong. The calliper was working perfectly this morning prior to me going at it so hopefully it's just a pad not seated correctly or something
29th Apr 2017 3:07 pm
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4398
If the old pads and discs were worn, the caliper piston would have been extended. You've pushed it back in to fit the new discs and pads, and now its stuck on some corrosion (around the end of the piston).
That would be my guess Richard
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29th Apr 2017 3:20 pm
Jodysutts
Member Since: 03 May 2016
Location: Waterford
Posts: 23
So I took off the caliper again and took out the pads. I cleaned around the pots made sure there were no bits of rust/dirt. I then pushed back the pots as far as they would go using a clamp and the old brake pad. put back the new pads with a bit of copper grease on the back and reinstalled the caliper and wheel. went for a spin and when I got back the disk was still way hotter than the other one, so the problem persists. I can turn the wheel by hand so its not completely stuck. not sure of the next step
29th Apr 2017 6:03 pm
Smudger
Member Since: 16 Aug 2013
Location: Herefordshire
Posts: 74
When you refitted the pads did you scrape all the crud out of the channels the pads move in?Never argue with an idiot! They will bring you down to their level, Then win with experience!!
29th Apr 2017 6:59 pm
Jodysutts
Member Since: 03 May 2016
Location: Waterford
Posts: 23
Yes I gave the channels a clean but I did notice It was tight so I put a small bit of copper grease on the lugs on the pad
29th Apr 2017 7:17 pm
Slobbox
Member Since: 10 Jul 2015
Location: Ribble Valley
Posts: 307
For the price of a new caliper get it replaced before you warp your new disc as wellStephen
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30th Apr 2017 8:29 am
Jodysutts
Member Since: 03 May 2016
Location: Waterford
Posts: 23
SUCCESS! So after another few hours messing around with the calliper in a last ditch attempt to get the pads to stop sticking I got to the bottom of it. I had already noticed the pads were quite tight in the metal clip/track that is seated into the calliper but I just thought it was normal. This morning I wanted to investigate this more so I took it all apart again and I couldn't even slide the pads with my hand they were that tight, and the two pots/pistons were perfectly level so they were working. It turns out the after market pads I got were a fraction too long so I took a hair off the lugs on the belt sander and they were much better. Put everything back together and all is working well again and no sticking!
30th Apr 2017 2:30 pm
defector
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1419
Well done - the difference between a mechanic/technician who fixes something , and a Fitter who just changes things.
(PS i dont know your profession, but just a general comment on your perseverence)
30th Apr 2017 3:21 pm
Jodysutts
Member Since: 03 May 2016
Location: Waterford
Posts: 23
Cheers, it's great when it works out! I'm actually a carpenter so I'm not sure where that leaves me 😃
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