2000 Ford F-250 Brake fluid leak at firewall

2000 FORD F-250
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Brakes problem
2000 Ford F-250 V8 Two Wheel Drive Automatic 140K miles

I have a minor brake fluid leak at the interior side of the firewall were the brake actuator rod enters the master cylinder assembly.

Is that most likely the hydraulic booster seal?

Should I replace the master cylinder as well as the booster?
Oct 31, 2010 at 11:17 AM
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MERLIN2021
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If the booster is sucking brake fluid from the master, replace both. Rear seal of the master is damaged as well as the diaphram of the booster.
Oct 31, 2010 at 11:29 AM
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