150 Preventing ABS problems
Description
This article is from the Chrysler-Plymouth-Dodge FAQ, by Dr. David Zatz with numerous contributions by others.
150 Preventing ABS problems
Marv Miller cautions: Due to the fact that the ABS-10 uses an accumulator,
which acts as a "pressure reservoir", the fluid level in the master
cylinder varies. When the pump pressurizes the accumulator, the fluid
level in the master cylinder drops by about 1/2 inch - the fluid went into
the accumulator. This is why you are supposed to completely depressurize
the system by fifty or more depressions of the pedal before checking the
fluid. The accumulator will empty back into the master cylinder
reservoir. If you don't depressurize the system to check the level, when
the accumulator pressure drops (in deteriorating systems this sometimes
happens overnight), brake fluid will overflow out of the master cylinder
caps.
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