Quantcast BRAKE ACTUATORS (LEFT AND/OR RIGHT REAR AND LEFT AND/OR RIGHT FRONT) DO NOT OPERATE CORRECTLY - continued - TM-10-3930-673-20-10914

 

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BRAKE ACTUATORS (LEFT AND/OR RIGHT REAR AND LEFT AND/OR RIGHT FRONT) DO NOT OPERATE CORRECTLY - continued - TM-10-3930-673-20-10913
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TM-10-3930-673-20-1 All Terrain Lifter Army System (ATLAS) 10 000 lb Capacity Manual
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BRAKE ACTUATORS (LEFT AND/OR RIGHT REAR AND LEFT AND/OR RIGHT FRONT) DO NOT OPERATE CORRECTLY - continued - TM-10-3930-673-20-10915
TM 10-3930-673-20-1
10. BRAKE ACTUATORS (LEFT AND/OR RIGHT REAR AND LEFT AND/OR RIGHT FRONT) DO NOT
OPERATE CORRECTLY (CONT).
6
KNOWN INFO
TEST OPTIONS
Is hydraulic oil pressure at
Hydraulic oil level OK.
Pressure test.
brake control valve between
Hydraulic hoses OK.
STE/ICE-R #51.
1600 and 1700 psi (11040 and
Hose connections/fittings OK.
REASON FOR QUESTION
11730 kPa) (2350 to 2450 psi
Tandem gear pump OK.
[16203 to 16892 kPa] fully
If hydraulic oil pressure is not 1700
Frame tilt/brakes relief valve OK.
charged)?
to 1800 psi (11721 to 12411 kPa)
POSSIBLE PROBLEMS
(2350 to 2450 psi [16203 to
Brake control valve faulty.
16892 kPa] fully charged), brake
Brake hydraulic accumulator faulty.
control valve is faulty.
Replace faulty
NO
brake control valve
(Para 0-1).
YES
7
KNOWN INFO
TEST OPTIONS
Hydraulic oil level OK.
Visual inspection.
Is brake hydraulic
Hydraulic hoses OK.
Pressure test.
accumulator free from signs
Hose connections/fittings OK.
STE/ICE-R #51.
Tandem gear pump OK.
of damage? Is precharge
REASON FOR QUESTION
Frame tilt/brakes relief valve OK.
pressure in brake hydraulic
If brake accumulator is damaged,
Brake control valve OK.
accumulator set at 900 psi
accumulator will not function. If
POSSIBLE PROBLEMS
(6210 kPa)?
pressure is not at precharged
Brake hydraulic accumulator faulty.
limit, actuators will not function.
Replace damaged
accumulator
NO
(Para 12-8) or
adjust pressure to
900 psi.
YES
Notify Direct Support about
this fault.
2-856
Change 1

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