Barry, et al.
Some plastics do slowly take in water.
Kelvin Hughes made plastic thru hull fittings for small boats that
swelled and trapped the transducers in their bores.
Also, Brocks Electronics (Seascan) used a plastic drive gear to turn the
antenna via a toothed belt. When the plastic swelle
Phenolic is impervious to water, should not be the source of your problem.
Aluminum however is not, could be the source of your problem if there was
water in the brake fluid. I would want to take a close look at the surface
condition of the inside bore of the caliper bodies. If indicated, a light
I did "mike" the piston. It was 54.7mmantwhich way I measured it so if it
grew it did so exactly proportional. I didn't have an inside mike to be able
to check the bore for accuracy. I suppose it may have been misshapen. If it
was a fluke thin, wellboth pistons were tight in their bores. The
ca
ed up getting a pair of rebuilts. Barry > Subject: Re: [MBZ] Tight
pistons rear caliper GMC 1500 No M/B > > Is there any pattern on the face of
the piston, like a cross? Sometimes > rear calipers have pistons that are
screwed back in vice pressed. > >
Max___
Swelled plastic from water in the fluid or from excess pressure? Dia. check?
Fred Moir
Lynn MA
Diesel preferred
On 6/25/2011 3:34 AM, Barry Stark wrote:
I have a '99 Sierra 1500 and I noticed that I got pretty much all the use of
the rear brake pads so I went to replace the pads. Caliper pisto
Max, others -
Thanks for all your comments folks. I still can't figure this out. I ended
up getting a pair of rebuilts.
Barry
> Subject: Re: [MBZ] Tight pistons rear caliper GMC 1500 No M/B
>
> Is there any pattern on the face of the piston, like a cross? Sometimes
> rear cali
;s experience I'd say you've gotten excellent service.
-Curt
Date: Sat, 25 Jun 2011 00:34:19 -0700
From: "Barry Stark"
To: "'Mercedes Discussion List'"
Subject: [MBZ] Tight pistons rear caliper GMC 1500 No M/B
Message-ID: <01cc330a$4bc716d0$e3554470$@n
Is there any pattern on the face of the piston, like a cross? Sometimes rear
calipers have pistons that are screwed back in vice pressed.
Max
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
Barry Stark wrote:
I have a '99 Sierra 1500 and I noticed that I got pretty much
Barry Stark wrote:
Any thoughts?
Is there a parking brake in there?
___
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I have a '99 Sierra 1500 and I noticed that I got pretty much all the use of
the rear brake pads so I went to replace the pads. Caliper pistons were
pretty far out so used a c clamp to retract them so the new pads would fit.
Seemed like it took way too much pressure with the clamp to retract the
pi
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