KNOWN INFO
Hydraulic hoses free from
leaks.
Air/hydraulic manifold filters
OK.
POSSIBLE PROBLEMS
Faulty hydraulic hose 515.
Faulty air/hydraulic power unit.
Faulty air hose 507.
Faulty secondary air tank
inversion valve.
Faulty air hose 502.
Faulty hydraulic hose 514.
Faulty back-up hydraulic pump.
Faulty hydraulic hose 521.
Faulty hydraulic hose 520.
Faulty air/hydraulic manifold.
2.
Does back-up hydraulic
pump operate?
TEST OPTIONS
Visual Inspection
This question eliminates
possible problems and
determines where
troubleshooting continues.
NO
Go to step 12
of this fault.
YES
YES
Go to step 11
of this fault.
NO
TEST OPTIONS
Pressure Test or
STE/ICE-R Test #51
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
3.
Is 2,500-4,000 psi
(17,238-27,580 kPa)
present at air/hydraulic
power unit return port?
KNOWN INFO
Hydraulic hoses free from
leaks.
Air/hydraulic manifold filters
OK.
Back-up hydraulic pump OK.
Hydraulic hose 521 OK.
Hydraulic hose 520 OK.
POSSIBLE PROBLEMS
Faulty hydraulic hose 515.
Faulty air/hydraulic power unit.
Faulty air hose 507.
Faulty secondary air tank
inversion valve.
Faulty air hose 502.
Faulty hydraulic hose 514.
Faulty air/hydraulic manifold.
TM 9-2320-365-20-2
2-1962 Change 1
t1. CAB TILT, SPARE TIRE RETAINER, AND SUSPENSION COMPRESSION DO
NOT OPERATE (CONT)
REASON FOR QUESTION
