Komatsu 830E-AC Shop Manual page 643

DISABLED TRUCK CONNECTORS
Quick disconnect fittings are provided to allow opera-
tion of the steering and brake circuits for temporary
truck operation if the steering/brake pump is not
operational. The steering circuit fittings (10) are con-
nected to another (operational) truck by hoses. A
jumper hose must be installed between the two brake
circuit quick disconnects (11) to enable service brake
operation. This will allow maintenance personnel to
move the truck to a suitable area for performing
repairs.
Another pair of quick disconnect fittings are installed
on the Overcenter Valve Manifold located above the
steering/brake pump. These fittings are used to
attach hoses to an operational truck in the event that
the hoist pump, hoist valve or other hoist system
component malfunctions. This will allow maintenance
personnel to raise the truck body to dump the load
before moving the disabled truck.
L02043
The steering circuit and hoist circuit relief valves are
adjusted to 17 240 kPa (2500 psi). The brake system
relief is adjusted to 24 132 kPa (3500 psi).
Refer to the appropriate information in this section of
the manual for repair and troubleshooting procedures
for the hoist system components and steering sys-
tem components. Refer to Section J for repair and
troubleshooting procedures for the hydraulic brake
system components.
Hydraulic System L2-5