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Hello All
I would like to follow up on the topic posted by “pfreen” about the brake booster. I have an early MkI with the stock Girling Mk2A booster. It was completely rebuilt 10 years ago.
I recently had my brake pedal go to the floor while driving (nothing too serious as I was moving very slowly in stop and go traffic.) I immediately suspected the Brake master and sure enough, upon removal and disassembly it needed to be completely re-sleeved and rebuilt.
I got all that done and got the MC back in the car. During the test drive the brakes did not seem to be getting any help from the booster.
Since the test drive, I performed Randy’s “old School” test and when I started the car with the brake pedal partially depressed it DID NOT move forward at all. Conversely, with the car off I pumped the pedal several times and the pedal strokes never shortened and continued to travel the full range which I interpreted as evidence it is NOT holding Vacuum.
I tested the manifold vacuum and got 12-13 inches @ idle (700 rpm.) The fluid level in the reservoir does not appear to be dropping, so I do not think it is blowing by bad seals in the booster.
My question…is there any intermediate repair (check valve, gasket etc) short of a complete rebuild of the unit?
Thanks
I would like to follow up on the topic posted by “pfreen” about the brake booster. I have an early MkI with the stock Girling Mk2A booster. It was completely rebuilt 10 years ago.
I recently had my brake pedal go to the floor while driving (nothing too serious as I was moving very slowly in stop and go traffic.) I immediately suspected the Brake master and sure enough, upon removal and disassembly it needed to be completely re-sleeved and rebuilt.
I got all that done and got the MC back in the car. During the test drive the brakes did not seem to be getting any help from the booster.
Since the test drive, I performed Randy’s “old School” test and when I started the car with the brake pedal partially depressed it DID NOT move forward at all. Conversely, with the car off I pumped the pedal several times and the pedal strokes never shortened and continued to travel the full range which I interpreted as evidence it is NOT holding Vacuum.
I tested the manifold vacuum and got 12-13 inches @ idle (700 rpm.) The fluid level in the reservoir does not appear to be dropping, so I do not think it is blowing by bad seals in the booster.
My question…is there any intermediate repair (check valve, gasket etc) short of a complete rebuild of the unit?
Thanks