Komatsu 830E-AC Shop Manual page 827

Hydraulic Troubleshooting (Continued)
Install tee fitting between
oil supply hose (1) and
pressure reducing valve
(2). Connect pressure
gauge with a 0-35,000
kPa (0-5000 psi) range
to tee fitting. Pressure
24,131 kPa (3000-3500
psi) the same as steering
M19003
YES
should be 20,684 -
system standby
pressure.
NO
Radiator Shutters
Cause Remedy
Pressure Replace
reducing pressure
valve (2) reducing
is defec- valve (2)
tive
Perform
trouble-
Hydraulic shooting
Supply to proce-
shutters is dures in
incorrect appropri-
ate shop
manual to
correct
truck
hydraulic
system
M19-9