Hi everybody,
Ole Rattler's been having a brake problem for some time: when I drive
for a long way, like an hour or so, the brake pedal free play seems to
disappear and the brakes (rear, mainly) start grabbing and not
releasing. It's like pressure is building up in the lines. After the
truck sits a while the brakes free up and the pedal free play returns.
This is a stock brake system.
Within the past year or so I replaced the master cylinder, and more
recently I went through the rear brakes with new slave cylinders, shoes,
spring kits, and had the drums turned. I also worked over the parking
brake cable adjustment last weekend, but the problem remains. This week
I'll be going through the front brakes like I did the rear, but I don't
think they're causing the problem. I also searched for any brake line
that was too close to a hot part like the exhaust pipe or manifolds, but
I didn't see any. I was thinking maybe the fluid was getting hot and
expanding. What kind of clearance should there be?
Has anybody seen symptoms like this, and if so what was it and what's
the fix?
Thanks,
Ed Miller
'58 Apache Fleetside
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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