Hello,
A 1970 122/Amazon has dual brake proportioning valves, one for each rear brake.
These are mounted under the car below the left rear passenger seat bottom.
You might be able to blow out the obstruction, but we usually have to remove the proportioning valve, disassemble it and clean it.
Most of the time, no parts are needed, just a thorough cleaning.
Do not forget to lubricate the piston seals with a little fresh brake fluid before assembling.
--
Eric Hi Performance Automotive Service (formerly OVO or Old Volvos Only) Torrance, CA 90502
|