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What is it with calipers? #1033981 09/08/11 09:04 PM
Joined: Sep 2006
Posts: 981
C
CJMT100 Offline OP
Rock Warrior
I dont get it. I dont drive hard really, I take good care of the truck, dont drive offroad to much and yet I keep blowing thru front calipers. First set I got 10k out of and then replaced, 2nd set I got 40k out of. Replaced the pass side about a month ago due to one of the pistons locking up and the drivers side one of the pistons locked up and I replaced today.

Seems only one or two of the pistons will lock, and no amount of prying, beating, clamping, spraying or heating will free it.

It cant just be the suppliers, so far have had a delco, a prostop (pepboys), cardone and a beck arnley iirc.


1996 T100, Mickey Thomson Classics, Bridgestone Dueler AT 265/75/16, custom offroad KC's.
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Re: What is it with calipers? [Re: CJMT100] #1033982 09/09/11 01:43 PM
Joined: Feb 2007
Posts: 476
B
BamZipPow Offline
Mudrunner
Did you replace the flexible lines during any point of these replacements? One or both could be bad and keeping pressure on yer brakes. <img src="/forums/images/graemlins/wink.gif" alt="" />


1998 T-100 Xtra cab SR5 2WD Auto; Roadmaster Active Suspension; Yokohama Geolander HT-S; lowered air dam; full belly pan; 4 diffuser; 11" side skirts; dual transmission coolers; 67% grill blocked; Auto-RX'd; ScanGauge II/Ultra-Gauge
Re: What is it with calipers? [Re: CJMT100] #1033983 09/09/11 06:51 PM
Joined: Feb 2000
Posts: 4,160
ErikB Offline
Toyota Moderator
Its possible all those rebuilt calipers come from the same place. I know it costs a lot, but its hard to bead OEM.

You may have moisture in your brake fluid causing bores to rust. I would recommend flushing the fluid a couple times now and then on a regular (like yearly or semi-annual) basis.


'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik
Re: What is it with calipers? [Re: ErikB] #1033984 09/09/11 11:10 PM
Joined: Sep 2006
Posts: 981
C
CJMT100 Offline OP
Rock Warrior
The flexible lines have been replaced 2x as well, 2 different parts stores as well.

Fluids ok, by now Ive flushed it all out at least 5x between the calipers and bleeding it a few times to make sure as well.

In every instance I noticed the boots are ripping-not always on the same piston thats locked up either. Maybe I just have bad luck. OEM is nice but COSTLY. I might try and see if I can score some from a yard for an ok price and rebuild them-I know its rather easy.

IDK


1996 T100, Mickey Thomson Classics, Bridgestone Dueler AT 265/75/16, custom offroad KC's.

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