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-   -   Brakes: 850: Sticking caliper (https://www.volvoforums.org.uk/showthread.php?t=292521)

chelle_belle Mar 6th, 2019 21:34

Sticking caliper
 
Hi,

Took the car out today as it has been stud for around two weeks, i could tell straight away something on the braking system was sticking, had a feel round the front discs and one side is cool and the other hot, i only done about 5 miles so guessing a sticking caliper?
I will clean the slider pins and push the caliper back, is it advisable to crack the nipple open for pushing the caliper back?

Thanks, Craig.

ITSv40 Mar 6th, 2019 21:55

Simple answer, yes.

volvo again Mar 7th, 2019 09:03

Good idea to open the bleed nipple but not absolutely necessary as long as you remove the master cylinder cap. Might also be worth easing the piston back and forth a few times to free it off. A squirt of wd40 inside the dust boot may help.

tdidave Mar 8th, 2019 11:22

Quote:

Originally Posted by chelle_belle (Post 2501773)
Hi,

Took the car out today as it has been stud for around two weeks, i could tell straight away something on the braking system was sticking, had a feel round the front discs and one side is cool and the other hot, i only done about 5 miles so guessing a sticking caliper?
I will clean the slider pins and push the caliper back, is it advisable to crack the nipple open for pushing the caliper back?

Thanks, Craig.


Well.. I can quite honestly say that I've never, ever slackened off a bleed nipple in the normal course of events (and got away it).. Just removed the fluid filler cap.. However, with an ABS valve block in the system it may be wise to..

Paul240480 Mar 8th, 2019 12:17

Me too, never cracked the nipple, for this type of work. In fact I'd be concerned about letting air in?
As said, remove the master cylinder cap. I put a plastic bag over it with an elastic band, in case it overflows and to stop dirt getting in.
Good luck.


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