500XOPTRS 18 2008
Auxiliary Hydraulics
The electric hydraulic pump is a back up for the load sense pump if the auxiliary engine can not
be started. The auxiliary hydraulics pump relief valve is set at 2400 psi (165 bar). It can operate
all hydraulic components that the load sense pump can except for raising the lift assembly. The
Multiplex electrical system will not allow the electric pump to raise the lift. The auxiliary hydrau
-
lics should always be used when installing any of the safety props.
NOTE: The auxiliary hydraulics pump requires a large amount of power to operate.
It is recommended that you always start the truck engine when using the
auxiliary hydraulics to prevent running the battery down.
Auxiliary Hydraulics Operation
1. Turn off auxiliary engine.
NOTE
: If the auxiliary engine is running, it will automatically shutdown if the auxiliary
hydraulics are turned ON. If the engine start key is engaged when the auxil-
iary hydraulics are ON, the Aux Hyd indicator light will flash.
2. Turn the auxiliary hydraulics toggle switch to the ON position.
NOTE
: The Aux Hyd indicator light will turn on.
3. Operate any of the hydraulically controlled components except the hopper lift UP.
NOTE
: If the gutter brooms are turned on, they will come down and spin for a couple
of seconds then stop.
4. When finished with the auxiliary hydraulics, turn the toggle switch OFF.
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