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Page Title:
SERVICE BRAKES DO NOT STOP VEHICLE - continued |
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 TM 10-3930-673-20-1
20. SERVICE BRAKES DO NOT STOP VEHICLE (CONT).
2
KNOWN INFO
TEST OPTIONS
Brake lines and fittings OK.
Visual inspection.
Bleed one or more brake
POSSIBLE PROBLEMS
REASON FOR QUESTION
calipers. Is hydraulic brake oil
Air in hydraulic brake lines.
If air is in hydraulic brake lines,
clear and bubble free?
Accumulator faulty.
lines will need to be bled.
Service brake calipers faulty.
Service brake pads faulty.
Continue to bleed
brake calipers until
NO
hydraulic brake oil is
clear (Para 12-5).
YES
3
KNOWN INFO
TEST OPTIONS
Brake lines and fittings OK.
Visual inspection.
Does accumulator charge
Brake lines free of air.
REASON FOR QUESTION
correctly? Is nitrogen
POSSIBLE PROBLEMS
If accumulator fails to charge,
precharge at specified
Accumulator faulty.
nitrogen precharge is low,
900 PSI?
Service brake calipers faulty.
accumulator is faulty.
Service brake pads faulty.
Recharge and/or
replace brake
NO
accumulator
(Para 12-8).
YES
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