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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
Apply steady pressure to the brake pedal and open
the bleeder valve. When fluid coming from submerged end of
hose is free of air bubbles, close bleeder valve and release
brake pedal. If pedal goes to the toe board while bleeding a
wheel cylinder without removing all air bubbles, close the
bleeder valve and release pedal slowly. Repeat bleeding
operation at this same wheel cylinder until clean fluid, free of
air bubbles, flows from the submerged end of the drain hose.
Repeat same procedure at each wheel cylinder until all air is
expelled from system. Check level of brake fluid in master
cylinder frequently during the bleeding operations and keep
master cylinder reservoir at least half full.
Refill reservoir to correct level with new brake fluid
and install reservoir cover.
Fluid withdrawn in the bleeding operation or fluid
whose cleanliness is questionable should never be used.
Fluid should be replenished in the supply reservoir after each
cylinder is bled. Should the supply reservoir be drained during
the bleeding operation, air will enter the system and
rebleeding will then be necessary.
Fig. 2
CTS-2055S Chapter III Page 5
PRINTED IN UNITED STATES OF AMERICA
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