Master cylinder and power brake booster

Cougar Community Classic Cougar Maintenance Restoration and Repair
1

I have a 1970 xr7. I am working on replacing or rebuilding the master cylinder and power brake booster. Does anyone know if you can rebuild a master cylinder and power brake booster? Does anyone know how to test or tell if the master cylinder and/or power brake booster needs to be replaced? Thanks for any help

2

Typically the brake booster is rebuilt when it exhibits signs of a vacuum leak. The master cylinder is rebuilt when it shows signs of leakage. Both types of rebuild are done by Booster Steve Power Brake Booster Exchange - 50 Reviews - Auto Repair in Lynnwood, WA - Birdeye

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3

Thanks Royce. I appreciate the help.

4

To test a brake booster, pump the brake pedal when engine if off until pedal goes hard. Hold pedal down, then start engine. Pedal should go down farther when engine vacuum is applied.

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Thanks for the information Yearby. I appreciate it. I will do that.