KNOWN INFO
YES
NO
14.
Is 2,500-4,000 psi
(17,238-27,580 kPa)
present at back-up hydraulic
pump output port?
Replace back-up
hydraulic pump (para 19-2).
Hydraulic hoses free from
leaks.
Air/hydraulic manifold filters
OK.
Hydraulic hose 515 OK.
Air/hydraulic power unit OK.
Air hose 507 OK.
Secondary air tank inversion
valve OK.
Air hose 502 OK.
Air hose 514 OK.
Hydraulic hose 520 OK.
Air/hydraulic manifold OK.
POSSIBLE PROBLEMS
Faulty back-up hydraulic pump.
Faulty hydraulic hose 521.
Replace hydraulic hose
521 (para 19-11).
TEST OPTIONS
Pressure Test or
STE/ICE-R Test #51
REASON FOR QUESTION
If 2,500-4,000 psi (17,238-
27,580 kPa) is not present,
back-up hydraulic pump is
faulty. If 2,500-4,000 psi
(17,238-27,580 kPa) is
present, hydraulic hose 521 is
faulty.
TM 9-2320-365-20-2
2-1968.16 Change 1
t1. CAB TILT, SPARE TIRE RETAINER, AND SUSPENSION COMPRESSION DO
NOT OPERATE (CONT)