Caliper Question..
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Member
Joined: Jul 2008
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From: Cape Cod, Mass.
2001 CLK 320
Caliper Question..
So i replaced my rotors with r1 concept premium slotted rotors all the way around..i'm very pleased with them..however, the rear calipers are not squeezing very hard..there is movement, so there not completely frozen, but there not doing much work..if i bleed them like crazy with this change? or do i need new calipers?
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From: Nebraska
99CLK320,
"the rear calipers are not squeezing very hard" how do you know? when you say there is "movement" what do you mean? how many miles on your car and when was the last time you had your entire brake fluid volume changed? maybe changing the fluid/brake bleed is the next step?
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Joined: Aug 2008
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From: Tampa, Florida
2005 c55amg, 2000 clk430, 2002 clk55amg, 2008 clk63amg black series
So i replaced my rotors with r1 concept premium slotted rotors all the way around..i'm very pleased with them..however, the rear calipers are not squeezing very hard..there is movement, so there not completely frozen, but there not doing much work..if i bleed them like crazy with this change? or do i need new calipers?
Thread Starter
Member
Joined: Jul 2008
Posts: 223
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From: Cape Cod, Mass.
2001 CLK 320
i was able to fix the problem by pushing the piston in and out a few times, putting a little bit of grease on it, pushing it back in, and bleeding the brakes ALOT..now they work like new..i am also very pleased with the r1 concept rotors
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Joined: Feb 2008
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From: Bay Area
02 clk 55, 13 GL 450
[QUOTE=rjlawlor646;4147773]i was able to fix the problem by putting a little bit of grease on it, pushing it back in,
Glad your problem is fixed but there is NOOOOOOOOOOOOOO grease involved in the hydro side of the system. You get grease in there and you have contaminated the brake fluid. If the seals on your pistons are good then there is no danger of grease getting past there.
Glad your problem is fixed but there is NOOOOOOOOOOOOOO grease involved in the hydro side of the system. You get grease in there and you have contaminated the brake fluid. If the seals on your pistons are good then there is no danger of grease getting past there.
Thread Starter
Member
Joined: Jul 2008
Posts: 223
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From: Cape Cod, Mass.
2001 CLK 320
well hopefully my seals are good, that would suck if i ruined the brake fluid..all i was trying to do was make it easier for the pistons to move because when i took the calipers off the pistons barley moved when i applied the brake..once i put a little grease on them they moved with a lot more ease, especially when i was pushing them back in with the c clamp. if the seals weren't good wouldn't fluid leak?
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Joined: Feb 2008
Posts: 502
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From: Bay Area
02 clk 55, 13 GL 450
exactly.. if the seals were gone youd be pissing fluid. Only thing that is gonna move that piston is the brake fluid. If you have air in the line, which you must have, the air will need to compress first negating the action of the fluid. The fluid will not compress when properly bled and full movement of the caliper achieved. If you didnt do a full flush when you bled the brakes... now would be a good time. The moisture that builds up over time will have a definite effect on the performance as well as corrode sensitive parts. This is not an area you want to have "uhhh ohhhhh's" in!
