mightysaints Posted September 12, 2013 Posted September 12, 2013 I have overhauled the rear caliper on my gsx 750 es. 30 years of crud etc didn't help but now all ok after a good clean of the pistons and new seals and pads but I now have a weird problem. The caliper is not central to the disc and 1 side of the new pads won't go in as the is not enough space even with the pistons all the way back. Can anyone help or know why this has happens. When I changed the pads 1 side was right down to the steel and the other side was not to bad hence one piston was fitter out than the other but that should not be the problem as the pistons are all the way back Quote
Stu Posted September 13, 2013 Posted September 13, 2013 I would take a look at all the wheel spacers and make sure everything is in line Quote
megawatt Posted September 13, 2013 Posted September 13, 2013 Sounds like the side with the worn out pad is doing all the work. The piston on the other side is sticking . Measure how far it goes in and how far it should go in. Quote
Tango Posted September 13, 2013 Posted September 13, 2013 Does the rear calliper have pistons on both sides? My bikes only have pistons on one side......the calliper then floats on the mounting pins........if, as I suspect this is the same on your bike, the calliper is sticking on the pins and not centralising on the disk when you apply the brake........ Quote
Adam Posted September 13, 2013 Posted September 13, 2013 Sounds like the same problem I had with my rear brake, one of the sliders had seized so the brake pad closest to the wheel wasn't moving and the other one was doing all the work. I ended up buying a new caliper but with patience an lots of WD40 you could probably free it up if that is the problem. Quote
mightysaints Posted September 13, 2013 Author Posted September 13, 2013 Both pistons have been cleaned and operate correctly now, one of them was stuck hence bad wear on one side. Both pistons have been set all the way back. It looks like the whole caliper is not aligned as the space for the disc is over to one side, strange Quote
Tango Posted September 13, 2013 Posted September 13, 2013 So...the calliper has opposing pistons?......if the disk is not central in the calliper then it may be a wheel spacer issue like Stu said...... Quote
mightysaints Posted September 13, 2013 Author Posted September 13, 2013 Going to have to find a drawing or spec sheet and see what's meant to go on the wheel axel spacers etc. it was a barn find and has been a labour of love and hate. Hate at the moment Quote
eastanglianbiker Posted September 13, 2013 Posted September 13, 2013 this might help you http://www.cmsnl.com/suzuki-gsx750-1986 ... ml#results just a thought the bracket the caliper bolts onto cant be fitted the wrong way round can it so it throws the offset the wrong way? Quote
mightysaints Posted September 29, 2013 Author Posted September 29, 2013 Brakes sorted. I stripped the caliper . Put in new seals, cleaned up the pistons. Used the right red grease, replaced the pads, used copper grease and all is well with a re bleed. Nice to know is wasn't to difficult a job in the end even for a non mechanic like me. Quite satisfying and money saving. Best check the fronts now Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.