Operation CHARM: Car repair manuals for everyone.

Non-Pressure Leaks

Any empty brake master cylinder reservoir condition may be caused by two types of non pressure external leaks.

Type 1: An external leak may occur at the master cylinder reservoir cap because of incorrect positioning of the gasket and cap. Reposition cap and gasket.

Type 2: An external leak may occur at the reservoir mounting seals. Repair such a leak by installing new seals.