stockrex

I got ready to change my brakes...
Driver side rear caliper on my 88 vert, I took of the lower bolt and tried to swing the caliper up to take the shoes out, no luck, had to use a screw driver to pry the caliper up, then realized that the top bolt/pin is frozen it won't slide even a mm. I tried whacking it with a rubber mallet, no luck, I have sprayed "blaster" penetrating oil under the rubber dust boot.
I was able to twist the piston in but it little more force than usual (i spray some blaster on the piston dust boot also).

The nice person at the auto parts store said that, the top bolt is not fixed, it should slide out all the way, is this correct?
how do I get my caliper to slide out?
TIA

stockrex
kc, mo

M5150

if u center a c clamp right on the middle and tighten it, itll turn and go in

stockrex

the piston turned in fine, I used the piston tool from napa.
the top (right) part of the caliper that is still attached to the caliper body. (see attached pic) this is supposed to slide side to side.

M5150

ya, its supposed to slide, try taking the caliper off from the 2 14mm bolts and see if somethins is in the way some how

Cgotto6

iTrader: (8)

No No No...Don't hit it!!! I just did my brakes, and the rear calipers have a trick. You have to rotate the piston clockwise until those "grooves" are lined up with the pin on the back of the pad. It should be a 180 degree spin. They should slide right on down after that.

stockrex

ok, I have the pic marked to show which sliding bolt I am talking about :-)

seveninphilly

iTrader: (7)

Had the same problem the pin was froze in place it would rotate but not slide. Tried as i could nothing wold break it free, the answer a new caliper for me.

I even took the caliper completely off and beet it with a big hammer

stockrex

yikes, but how will I swap my calipers then? I still need to take it off the guide pin, I don't want to heat it as it will destroy the rubber dust shield.

heeeeeeeeeeeeeeeeeeeeeeeelp pls!!

razorback

whats the part number for that piston tool? and cost?

stockrex

the piston tool is a universal piston tool, even sears carries it now in their crapsmen brand, it is 10$.
napa, oreilly and advanced all carry em, see attached pic

Kenteth

what does that thing do anyway?

Relisys190

iTrader: (4)

It makes it easier to turn the piston back in. some brakes are different, the piston just "pushes in" ours have to be turned back in (rears only)

-Markus

Cgotto6

iTrader: (8)

Seriously, its not as hard as you guys are making it seem. Just take some needle nose pliars(?) and rotate the piston clockwise 180 degrees. You don't need any special tools. It simple. Just make sure the piston is lined up with the "nub" on the back of the pads. It will slide right down. You dont need go pound on it or anything.

razorback

i tried using pliers and now i am buying a new rear caliper.

BlackRx7

yeah and when you use plyers you usally end up with blood blisters of your fingers, that tool is good that was mentioned above but the better kind actuall push against the other side of the caliper while turning the piston in.

stockrex

tool makes it easy to turn the piston, yes you can use a neddle nose plier but better have steady hands, slip and you will tear the rubber dusk boot around the edge of the piston, then you will have to get new caliper (80 reman from auto parts..)
I was watching cartalk on DIY channel and gal mentioned loosening the bleed screw a little bit to relieve the pressure when turning in the piston, it make it softer to turn.
BEFORE turning in the piston you should clean the dust boot and the piston and spray it with some rubber conditioner/rubber safe lubricant.

Scott 89t2

did anyone here even read the question or look at the pics?? he's not trying to get the caliper piston in. he's trying to remove the caliper..........




to answer your question. I have no idea

stockrex

thanks scott, yes I still have the problem of top guide pin that WON'T slide out.
any ideas gentlemen?

razorback

all i had to do was take the bolt off the bottom part of the caliper and slide it out. also make sure your e-brake is off.

stockrex

e-brake is off,
is there anyway I can take the cap off the inside end cover of the top slider pin? maybe then I can spray penetrating oil from the that end.