If the hub and drum could move I would expect any wear marks to be at the
top, not the bottom, the weight of the car tending to move the top of the
drum in.
The screws are really only there to stop the drums falling off on the
production line, when they don't have any wear ridges. The wheel and nuts
hold the drum fully and solidly seated. Since having to fight to get the
screws undone on a couple of cars I have always left them about half a turn
loose.
The back-plate is relatively flexible. Could it have become distorted?
Could you flex it to get sufficient clearance? With the drums in situ what
do the relative positions of the drum and backplate look like top to bottom
on the side with the rubbing (is it only one side?) and left to right?
PaulH.
-----Original Message-----
From: Kulka, Matt <Matt.Kulka@hboc.com>
To: 'mgs@autox.team.net' <mgs@autox.team.net>
Date: 17 December 1998 21:29
Subject: Brake and Axle soiree on '74 B.
>I wonder if any of you can help me with this mystery?
>
>I have a '74 B (with rostyles). I started to get a little squealing out of
>my rear brakes, so I pulled the wheels off to have a look. The edge of the
>drum which faces the backing plate has been rubbed shiny - and there's a
>shiny stripe on the lowest arc of the backing plate to match. Uh oh, says
I
>to myself - end play in the axle? So I put the wheel back on and start
>pushing and pulling - up, down, left, right, in, out, repeat and repeat
>again... and no play that I can find.
>
>I know I'm due to replace the thrust washers in my differential, but I
can't
>think that would cause the left axle to change position, would it?
>
>Anyone got a bright idea why my brake drum would start to contact the
>backing plate? I've put about 6000 miles on this car and this is the first
>time this has turned up.
>
>As always, thanks.
>
>Matt Kulka
>'74 B - Still driving with the top down in sunny North Carolina.
>
>
|