Broderson IC-400-3B, Operation And Maintenance Manual

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3. To override the boom swing/slewing:
a. The Chassis Control Valve is located within the chassis under the operator com-
partment. If your unit has a front winch option, the other section on the lower con-
trol valve operates the front winch.
Chassis Control Valve
b. Locate the override handle under the operator’s seat. If the handle is missing,
an adjustable wrench may be used.
c. Start the engine.
d. Ensure that the park brake is set. Chock the wheels or put the machine on out-
riggers.
e. Put the handle on the small shaft protruding from the lower control valve. It will
look similar to the overrides on the Upper Control Valve.
f. Swing the boom over the front of the crane. Use extreme caution. The RCL will
not stop boom motion. Do not swing the boom from the front to the side, espe-
cially with a load on the hook or while on rubber. This may overload the crane.
g. Turn off the crane.
4. To override the outrigger functions:
a. Locate the enable solenoid valve on the outrigger control valve. The outrigger
control valve is located within the chassis on the inside of the left frame rail.
The enable-solenoid-valve is indicated in the figure below.
b. Disconnect the 2-pin electrical connector on the enable-solenoid-valve. Apply
12V to the pin with the white wire. Ground the pin with the black wire. This
valve must remain powered to build pressure, to operate the outriggers.
c. Each outrigger has a solenoid valve. Each valve section has 2 solenoids. Each
solenoid has a 2-pin electrical connector. The white wires are 12V, and the
black wires are ground.
d. Ensure the parking brake is set.
e. Start the engine.
f. To raise outriggers, apply 12V and ground to each solenoid on the lower side of
the outrigger control valve. From left to right, the valve sections control the right
rear, left rear, left front, and right front outriggers.
g. Turn off the crane.