[Vwdiesel] 85 Jetta TD Front brakes locking up
val at mongo.mongobird.com
Thu Nov 1 11:31:04 PDT 2007
A light wire brushing is OK, but I would not use neversiee. It will
take on particulates. The caliper bushings are meant to run dry.
Once they are pitted with rust, they have a "catch" point, and should
really be replaced.
Also, check your pads and the sliding surface of the caliper. I like
to dress these when doing brakes, as it keeps a pad from catching on the
sliding portion of the caliper. If they are rusty, after sitting for
a while, or whatever, then they could be catching on some rust.
> I agree, great call, you can also get new plastic
> "bushing" for little $$, so if they look bad replace
> them too.
> Good luck, stinks you did all that break work but hey,
> you are good to go on front brake hardware for a long
> --- James Hansen <jhsg at sasktel.net> wrote:
> > The bushings that the caliper moves on must be
> > stuck/rusty/seized.
> > remove the two allen head bolts that holds the
> > caliper on, there are
> > plastic sleeve things in there that they call
> > caliper bearings, remove
> > those too. (fish them out)
> > Polish the bolts on a wire wheel, clean the caliper
> > inside bit where
> > this stuff came from well, antisneeze the heck out
> > of it, and reassemble.
> > Problem should vanish.
> > Head gasket would be incidental.
> > So would the master cylinder change.
> > Problem is in the calipers.
> > I bet you have one pad worn way more than the other
> > too, on the side
> > opposite the piston. The caliper moves over to
> > squeeze on the rotor,
> > but can't move back, because the semi-stuck bushings
> > hold it from moving.
> > There is special high temp grease for caliper
> > bushings, but anti-seize
> > works just fine.
> > -james
> > Doyt W. Echelberger wrote:
> > > About a month ago my aging 85 Jetta TD developed a
> > brake problem. I'd drive
> > > it about 5 miles and then the front brakes started
> > dragging and making the
> > > engine labor. The front hubs got hot and were
> > smoking, and I had to stop
> > > driving the car and let everything cool down.
> > This problem developed on
> > > the test drive after replacing the head gasket,
> > which may only be
> > > incidental. Same brake problem showed up about 6
> > months ago, and I swapped
> > > in a new master cylinder and the problem went
> > away.
> > >
> > > OK, I did some easy fixes.... First, I replaced
> > the master cylinder. It
> > > was still under warranty and the replacement was
> > free, so I just did it.
> > > That stopped the passenger side front brake
> > problem, but the driver side
> > > front brake just kept on locking up. "I'm gonna
> > fix that," (sez I).....and
> > > replaced the caliper and both the hard line and
> > the flexible hose on that
> > > side. It didn't change anything except the
> > thickness of my wallet.
> > >
> > > Driver front brake still locks up after driving
> > about 5 miles.
> > >
> > > So, all the easy answers seem to be used up. I'm
> > obviously overlooking
> > > something....probably obvious to someone....or at
> > least I hope so. Help.
> > >
> > > Doyt Echelberger
> > > old guy in Ohio
> > >
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