LOAD KING 80-160, Operator'S Manual

Page: 160 / 369

160
80-160
Operating Instructions
Safety Devices
The safety devices on your
Load King
Boom Truck are described below. These devices will help you
maintain control of a load should power or hydraulic line failure occur. You must understand the function
and operation of these devices so that a continual check on their performance can be made.
SHOULD ANY OF THESE DEVICES FAIL TO FUNCTION, STOP ALL OPERATIONS
AND CONSULT YOUR AUTHORIZED
LOAD KING
DEALER. THIS CRANE CAN BE
OVERLOADED BY AN OPERATOR WHO FAILS TO FOLLOW THE INSTRUCTIONS
CONTAINED IN THIS MANUAL.
BOOM LIFT CYLINDER HOLDING VALVE
A single acting holding valve is cartridge-mounted in the cylinder base. This valve holds the boom in the
elevated position should power or hydraulic pressure line failure occur. Should any of these happen,
“STOP NOW.” If the boom creeps down, consult your authorized
Load King
dealer.
NEVER, UNDER ANY CIRCUMSTANCES, REMOVE OR ATTEMPT TO REMOVE THE
CARTRIDGE FROM THE LIFT CYLINDER BASE UNTIL AN AUTHORIZED
MAINTENANCE PERSON IS PRESENT AND THE BOOM IS PROPERLY SUPPORTED
AND BLOCKED. AN UNSUPPORTED BOOM CAN FALL UNCONTROLLED; CAUSING
DEATH OR SERIOUS INJURY OR PROPERTY DAMAGE.
EXTENSION CYLINDER HOLDING VALVES
There are 2 boom extend cylinders, and each has its own hold valve. One cylinder extends boom
section 2 and the other cylinder extends sections 3, 4, 5 and 6. The valve holds the cylinder in the
extended position should power or hydraulic pressure line failure occur. If the boom creeps in under
load, consult your authorized
Load King
dealer.
OUTRIGGER CYLINDER HOLDING VALVE
All outriggers are equipped with internal cartridge type lock valves. If outriggers creep up under load, or
down while roading, consult your authorized
Load King
dealer.
WINCH SAFETY BRAKE
To determine if the brake is working, set the outriggers, raise a load a few feet and release control handle.
Shut truck engine off; actuate winch control handle in down direction. If the load creeps down, consult
your authorized
Load King
dealer.
SWING DRIVE BRAKE (ROTATION GEARBOX)
The rotation gear drive has a spring-applied hydraulic release brake. To determine if the brake is working,
set the outriggers, swing the boom and release the control handle. If the boom continues to swing,
consult your authorized
Load King
dealer.