Change 1 2-1072.3
TM 9-2320-366-34-1
PRESSURE TEST
(1) Disconnect hose A from fitting at port A
of valve manifold.
(2) Install swivel run tee on fitting at
port A of valve manifold.
(3) Connect hydraulic hose A to swivel run tee.
(4) Connect reducer, hose, and STE/ICE adaptor
to swivel run tee.
(5) Start engine (TM 9-2320-366-10-1).
(6) Position PTO switch to on (TM 9-2320-
366-10-1).
(7) Increase engine RPM to 1250-1450
(TM 9-2320-366-10-1).
CAUTION
Hydraulic oil temperature must be 145°F-
155°F (63°C- 68°C) prior to performing
troubleshooting checks. Failure to comply
may result in inaccurate test results.
NOTE
Holding DUMP BED UP/DOWN switch in
the down position will force hydraulic oil
through relief valve and cause oil
temperature to rise.
Measure hydraulic oil temperature near
bottom of hydraulic reservoir.
(8) Press and hold DUMP BED UP/DOWN
switch in the DOWN position until hydraulic
oil temperature reaches 145°F-155°F
(63°C-68°C).
(9) Perform STE/ICE Test #51 (TM 9-4910-
571-12&P)
(10) Hold DUMP BED UP/DOWN switch in
the UP position and observe pressure
reading with in 2375-2625 psi (16,376-
18,099 kPa).
(11) If pressure is not with in 2375-2625 PSI
(16,376-18,099 kPa) replace or repair M1090
/M1094 four way relief valve (para 17-3).
(12) Reduce engine RPM to idle (TM 9-2320-
366-10-1).
(13) Position PTO switch to off (TM 9-2320-
366-10-1).
(14) Shut down engine (TM 9-2320-366-
10-1).
(15) Remove STE/ICE adaptor, hose and
reducer from swivel run tee.
(16) Remove hose A from swivel run tee.
(17) Remove swivel run tee from port A of valve
manifold.
(18) Connect hose A to port A of valve manifold.
