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Old 06-09-2009, 02:37 PM   #1
griesel72
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HELP My disk brakes are killing me

Is there any easy way to get the piston on the front brakes of my K10 to depress easily? I tried pushing with my hands, a pair of vise grips and a c clamp, and i can't get it in far enough to get the new pads on. Is there something i'm missing? Could it be stuck?

thanks
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Old 06-09-2009, 02:54 PM   #2
Robert8096
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Re: HELP My disk brakes are killing me

If the piston is at the edge of the caliper bore you may have the wrong pads. When I did a set on a 79 c-10 the brake hoses were swollen inside and not allowing the fluid to return to the master cylinder. The piston could also be frozen in the caliper bore.

If you crack the bleeder screw and the piston compress then that is a good sign the hoses are shot and if that is the case then go ahead and replace the calipers also because the hose particles will cause the piston to freeze in the bore sooner or later.

Good Luck
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Old 06-09-2009, 05:20 PM   #3
70rs/ss
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Re: HELP My disk brakes are killing me

A rebuilt caliper is like $20 from the parts store, get those and some new hoses, that way your brake system is good to go. The piston should compress pretty easily if not the bore could be gunked up or worse have a groove or knich in it, so like I said a rebuilt caliper and away you go.
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Old 06-09-2009, 05:25 PM   #4
69GMCLonghorn
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Re: HELP My disk brakes are killing me

There is a simple tool that you can get at Sear's or wherever tools are sold that is used for compressing the piston(s) in brake calipers. It's a pain to do by hand or by Micky Mousing. Pick one up; it'll be money well spent (not much though, they're pretty cheap).
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Old 06-09-2009, 05:39 PM   #5
70rs/ss
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Re: HELP My disk brakes are killing me

If a C-clap won't collapse it there is a problem, there isn't supposed to be any resistance to the fluid returning to the resevoir.
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Old 06-09-2009, 05:40 PM   #6
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Re: HELP My disk brakes are killing me

with a C clamp on the caliper piston, and the bleeder screw open, you should be able to compress the caliper easily. If not, the caliper is bad. If it does compress the hose could be bad. The calipers and hoses are cheap, and why would you not want to stop safely? Take your time, and diagnose the problem, and THEN put new stuff on your truck. Going fast is fun, but stopping, is just the best!
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Old 06-09-2009, 05:46 PM   #7
d10s69c10
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Re: HELP My disk brakes are killing me

As stated new (well rebuilt) calipers are the easiest way to go if you have $60.
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Old 06-09-2009, 08:14 PM   #8
sjarrett71
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Re: HELP My disk brakes are killing me

Don't know if it matters much but is the cap off the reservoir to allow the fluid to flow back into it without pressure buildup?
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