another brake caliper rebuild question
Moderators: hot66, impmad2000, Nige
another brake caliper rebuild question
anyone got any suggestions on how to get both my pistons out of the rear callipers?
Both are really sticking, but using air pressure I can get one to pop out (explode out more like ), while the other is almost all the way out. Prob is even tho the remaining piston is almost out, I can not fully remove it. Anyone got any tips?
I was thinking of replacing the seals etc for one piston, pushing it back in & then popping the other out etc.
Also, can anyone recommend some good rebuilding 'grease' to use with the rebuild kits?
Both are really sticking, but using air pressure I can get one to pop out (explode out more like ), while the other is almost all the way out. Prob is even tho the remaining piston is almost out, I can not fully remove it. Anyone got any tips?
I was thinking of replacing the seals etc for one piston, pushing it back in & then popping the other out etc.
Also, can anyone recommend some good rebuilding 'grease' to use with the rebuild kits?
James
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
yep agree with berny on that done mine red rubber grease and g-clamp while you blow the other one out it is easy once you sussed out how to do it
COMPUTER GAMES DONT AFFECT KIDS,I MEAN IF PACMAN AFFECTED MY GENERATION AS KIDS, WE WOULD HAVE ALL BE RUNNING AROUND IN THE DARK LISTENING TO REPETITIVE MUSIC MUNCHING PILLS
thats what I've been doing. I have one of the pistons almost out, clamp it & then blow the other one out. Prob is I can't then remove the one that is still in the calliper, even tho it is almost all the way out. These pistons are really tight, I have to use a clamp to reinstall them (with the old seals, have yet to try the fit with the new seals)Miggs wrote:yep agree with berny on that done mine red rubber grease and g-clamp while you blow the other one out it is easy once you sussed out how to do it
Where do you get the red rubber grease? motor factors?
James
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
have you tried some pump pliers?? when i got mine out i cleaned them with some 400wet and dry then chucked in rubber grease any where that sells car stuff will sell the grease
COMPUTER GAMES DONT AFFECT KIDS,I MEAN IF PACMAN AFFECTED MY GENERATION AS KIDS, WE WOULD HAVE ALL BE RUNNING AROUND IN THE DARK LISTENING TO REPETITIVE MUSIC MUNCHING PILLS
right getting somewhere now.
Removed one piston. Piston & bores are smooth & clean. The area on the 'outside' of the seal was very cruddy & rusty thus preventing the piston coming out freely. Smoothed this area using 800 wet & dry & the piston now moved into the caliper up to the 'rod' OK. Fitted new seals, lubed & pushed piston back in.
Repeated for other piston.
My problem now is the pistons still seam to be reluctant to go all the way into the caliper. I have to use a g-clamp to get them to slide down the 'rod'. When I tested the caliper it took about 8bar to get the pistons to actually move out. This doesn't seem right to me.
Anyone got any suggestions on where the problem might lie?
Removed one piston. Piston & bores are smooth & clean. The area on the 'outside' of the seal was very cruddy & rusty thus preventing the piston coming out freely. Smoothed this area using 800 wet & dry & the piston now moved into the caliper up to the 'rod' OK. Fitted new seals, lubed & pushed piston back in.
Repeated for other piston.
My problem now is the pistons still seam to be reluctant to go all the way into the caliper. I have to use a g-clamp to get them to slide down the 'rod'. When I tested the caliper it took about 8bar to get the pistons to actually move out. This doesn't seem right to me.
Anyone got any suggestions on where the problem might lie?
James
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast