J-L
There are two distinct hydraulic systems within the RR setup. First,
check to see that the front lines are where they are supposed to be. i.e., the
top line on the holding bracket that sits atop of the swivel ball goes to the
bottom fitting of the caliper and the bottom line of the bracket goes to the top
fitting of the caliper. Same for the other side. This enables the pressures to
work properly. Since the 1990 has only one line to the rear caliper, there is no
problem , but I'm told that a weak flex line will have somewhat of an effect of
the inside pistons working properly and the outside ones being lazy. Couple that
with years of gunk and crap and you may be in for a caliper rebuild, seals and
pistons. BTDT . Bleeding is basically the same, other than you have to bleed
both front bleeders at the same time , one caliper at a time.
Con Seitl
1973 III 88 "Pig"
1991 RR "hers"
Jean-Leon Morin wrote:
> Hi gang, this is in regards to rangie stuff but I would much rather consult
> this gang than the CD player list.
>
> Today while driving Valdez, the rear brakes started grinding loudly. I
> stopped to inspect and one of the pads in the rear had been worn right to
> the metal backing plate, and scored the rotor pretty badly. Valdez has 1990
> Rangie axles which originally had ABS.
>
> So, after some sourcing I had a set of pads, and started installing them. I
> noticed that the outboard pads on both sides were in excellent shape (50%
> left) while the inner pads were cooked.
>
> Now, I would usually assume that this is the result of a sticking caliper,
> which may very well be the case, but I am wondering if there is a
> possibility that there might be something in that caliper that is not
> functioning correctly due to the ABS nature of the system. Perhaps a problem
> arising due to an air pocket that might not allow the same force to be
> applied to the pads. This goes against every shred of hydraulics theory that
> has been thrown at me, but I figure I should ask before I go on ignoring the
> problem and having to replace an expensive set of pads overly quickly. The
> multiple bleeders on the front seem to indicate a complex bleeding sequence
> which I have never followed, however the brake system is plumbed like a
> series, as opposed to a rangie setup.
>
> I'm not at all interested in remedying the problem if it is indeed a stuck
> caliper as I'll probably be replacing the rear axle with a 110 salisbury
> rear soon enough, as the 10 spline rear is just not up to the task.
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