TM 9-2320-387-24-l
DIAGNOSTIC FLOWCHART
BRAKE SYSTEM
PARKING BRAKES OK
T OPTIONS
VISUAL
IS THE FLUID IN THE MASTER
CYLINDER FREE OF
CONTAMINATION AND FILLED
TO THE PROPER LEVEL?
REASON FOR QUESTION
Contaminants
in fluid or low
fluid level decreases braking
efficfency, resulting in little or
no braking action.
1
POSSIBLE
PROBLEMS
1
SERVICE BRAKES
HYDRAULIC SYSTEM
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I
I
KNOWN INFO
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TEST OPTlONS
IS THE MASTER CYLINDER
1. VISUAL
WORKING PROPERLY AND
2. FOLLOW TEST PROCEDURE
FREE OF LEAKS?
ATTHE
RIGHT.
PARKING BRAKE OK
FLUID CLEAN AND FULL
I
REASON FOR QlJESTlON
POSSIBLE
PROBLEMS
BRAKE COMPONENTS
HYDRAULIC
COMPONENTS
MECHANICAL
COMPONENTS
83
1
1 TEST OPTIONS
KNOWN INFO
PARKING BRAKE OK
MASTER CYUNDER OK
ARE THE BRAKE LINES,
HYDRAULIC LINES, AND
CALIPER PISTON SEALS FREE
OF EVIDENCE OF LEAKING
AND STRUCTURAL DAMAGE?
VISUAL CHECK FOR LEAKS,
DAMAGE, BINDING, KINKING,
ETC.
REASON FOR QUESTION
If the braking system is losing fluid,
stopping distances will increase
I
until the brakes fail due to lack
of fluid and fluid pressure.
POSSIBLE
PROBLEMS
BRAKE COMPONENTS
HYDRO-BOOSTER
MECHANICAL
COMPONENTS
