1985 Toyota 4Runner Repair Question
How to repair proportioning valve 1985 4 runner
Wash the area, then hold pressure on the brake pedal to see if fluid continues to leak. A fitting didn't start leaking from sitting unless it's real rusty. There are o-rings and seals in the assembly but you don't fix them, you replace the entire assembly. No repair parts are available for those valves. Finding a used one in a salvage yard is acceptable because the failure rate is extremely low.
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