RUMBLE HOG RH7500, Operation Manual

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Section 2 - Rumble Hog Systems
The operation and Maintenance requirements for
the engine, drivetrain and chassis components are
unique to the chassis manufacturer and selected op-
tions. Each manufacturer provides owner information
manuals with their product. It is important that you
read the manuals carefully and become familiar with
the proper care and operation of engine, drive sys-
tem, chassis, safety equipment and all components
of your truck chassis.
Proper operation and Maintenance procedures for
Rumble Hog systems are essential to efficient and
safe operation. Maintenance requirements and
operating instructions are outlined in subsequent
sections of this manual. Make sure you read this
manual and the manuals from other major compo-
nent manufacturers which have been included with
your equipment before operating the Rumble Hog.
2.2 hydraulic System
Hydraulic System Overview
The Hydraulic system powers all movement of the
cutter arm, rotation of the cutting drum, the water
pump, debris tank hoist, vacuum debris recovery
system and the hydrostatic drive. Hydraulic system
components are powered by the truck engine. They
are activated by the PLC and switches in the truck
cab switch panels or digital control.
There are several hydraulic pumps, a large reservoir
tank, a manifold to centralize control valves and in-
line filters. Two heat exchangers cool hydraulic fluid
during operation. Electric solenoid valves, activated
by switches in the digital controller, joystick, remote
control or on the rear of the debris tank, direct
hydraulic pressure to the various components.
Filters protect the system from debris. Pressure
gauges on the hydraulic manifold and near the filters
alert the operator when they are dirty and require
changing.
Reservoir
A large reservoir tank mounted on the chassis be-
hind the cab provides hydraulic fluid for the system.
The pumps circulate fluid through the manifold,
hydraulic motors, cylinders and other components,
then back to the tank. In-line low pressure filters
near the reservoir clean the fluid as it flows back
into the reservoir.
The hydraulic reservoir is equipped with a sight
glass to view oil level. The thermometer inside
Hydraulic Fluid Reservoir & Sight Glass
the sight tube should not be used to determine
correct temperature to begin operations. Ther-
mal transducers installed on the outlet of the oil
cooler display the relevant oil temperature on the
controller display screen. The fluid level should be
maintained within the upper level of the sight glass
to ensure adequate fluid for operation.
Hydraulic fluid should be changed and the tank
flushed on a regular schedule as stated in the
Maintenance Matrix located in the Maintenance
section of this manual.
WARNING
H Y D R A U L I C F L U I D T E M P E R AT U R E M U S T B E A B O V E
68 FAHRENHEIT BEFORE OPERATING THE HYDRAULIC
SYSTEM. IF THE FLUID TEMPERATURE IS BELOW 68
DEGREES, YOU MUST FOLLOW THE COLD WEATHER WARM
UP PROCEDURE TO CIRCULATE HYDRAULIC FLUID AT LOW
PRESSURE UNTIL IT IS WARMED TO MINIMUM OPERATING
TEMPERATURE AS INDICATED ON THE CONTROL SCREEN.
FAILURE TO DO SO WILL RESULT IN EXTENSIVE DAMAGE
TO THE INTERNAL SEALS, PUMPS AND MOTORS.