The first order of business was to build a stand to hold the brakes above the table for disassembly. Then an inspection of the differential gears. As suspected, the thrust washers are worn out.
Rear brakes look very good.
First step to replacing thrust washers, pull an axle.
Next remove differential wheels and pinion gears and put fresh thrust washers on each.
Putting it all back together, a bit more complicated. The pinon pin was very tight coming out, so it spent the night in the freezer. Next, the pinon gears are difficult to install opposed to one another, and even harder to keep in place while installing the pin. The trick is to use a couple of small sockets to hold the gears and washers in place while the frozen pin is tapped into place. Press pin installed, all done.
The next task was to put new seals on each end of the axle. This went smoothly, and form a gasket was used on the seal flange to keep the oil in, there is no gasket on this part from the factory and it makes a mess of the axle.
Backing plate all cleaned up.
Brake shoes back on, and drum turned smooth.
Almost forgot, the brake pistons were a mess, but were easy to clean up.
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