Author Topic: Brake caliper sticking  (Read 4602 times)

Tiger John

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Brake caliper sticking
« on: August 19, 2015, 13:09:30 »
My 1967 250 SL (Early ....895) has a ongoing sticking caliper on passenger side rear.......have replaced caliper...still sticks....am now replacing all brake hoses...is the old hose the possible problem??

kampala

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Re: Brake caliper sticking
« Reply #1 on: August 19, 2015, 13:42:48 »
Old Brake hoses can swell on the inside and allow fluid to the caliper under pressure but will not release as easily due to the swollen hose restriction.

You can test by pressing the brake and making sure the brakes are sticking / binding --- then crack open the hose right at the stuck caliper --- if the caliper releases once fluid pours out, the problem is a restriction in the hose/pipe and if it does not release, the problem is at the caliper.

best of luck,

Oz
250sl - later - manual
280sl - 1971 - Auto - LSD

Mike K

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Re: Brake caliper sticking
« Reply #2 on: August 19, 2015, 13:48:53 »
I recently noticed that I had an intermittent sticking calliper on the driver's side at rear. This prompted me to undertake a comprehensive revamp of the braking system.
This included replacing all 4 calipers, 4 brake hoses, brake pipes, 4 new discs and for good measure installing a new Master Brake cylinder as well.
Problem has been solved.

It could a damaged brake hose....
Have you also checked the condition of the disc?

Best,

Mike
Feb. 1971 Mercedes 280SL Auto  LHD (Last of W113 Series)
Aug. 1989 Mercedes R107 300SL RHD (Last of R107 Series)
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Shvegel

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Re: Brake caliper sticking
« Reply #3 on: August 25, 2015, 21:49:38 »
I have seen the inner lining of a brake hose detach and act like a check valve allowing fluid to the caliper but not letting it release.

Tiger John

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Re: Brake caliper sticking
« Reply #4 on: September 19, 2015, 12:12:20 »
Took out my 1967 250 (early) yesterday....continue to hear "chirping" from right rear....have replaced caliper...brake hoses...all brake lines recently replaced...after 20 mile drive rear wheel is hot...all others are cool....any Ideas on problem????

Naj ✝︎

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Re: Brake caliper sticking
« Reply #5 on: September 19, 2015, 12:45:38 »
'E' brake too tight?

naj
68 280SL

wwheeler

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Re: Brake caliper sticking
« Reply #6 on: September 20, 2015, 13:40:40 »
Does the rotor turn true or any play in the rear axle bearing on that side?
Wallace
Texas
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'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6