Control Linkage Adjustment
The cable and mechanical controls used on this machine are designed to require little or no
adjustment. The use of standardized cable-mechanical linkage means that one adjustment
procedure may be applied to several control functions. Should adjustment become
necessary, refer to Group 28 of the Parts Book when making them.
The cables used on this machine are sealed. Never adjust a cable to the point
that the threads on the rod end are pulled into the seal.
SWING LOCK
The swing lock cable linkage is adjusted at the control handle. Cable tension is increased
or decreased by turning the control handle in or out. Avoid excessive tension to prevent
cable damage. Adjustment of the rod length or the clevis ends of the cable should not be
necessary unless new parts are installed.
SWING BRAKE PEDAL
Adjust swing brake pedal by loosening cable lock nuts at pedal anchor. Increase tension by
shifting cable out of the "U" shaped bracket with adjustment of the locking nuts.
SWING, WINCH, BOOM TELESCOPE, BOOM HOIST, VALVE CONTROL
The swing, winch, boom telescope, and boom hoist valve control linkages are all electro-
proportional in operation. No adjustments should be required to the coil of each valve
spool. The coil or electrical connection of the coil may need to be replaced if the valve fails
to function. Check continuity of signal to the valve coils and that electrical contacts are
clean and free of dirt and not having bent or misaligned terminals.
SHIFT CONTROL
No adjustments are possible. In the event of malfunction, check for electrical continuity.
THROTTLE CONTROL
The throttle control is electronic, see Cummins Engine Maintenence Manual for output
signals & voltage range.
REAR AXLE DISENGAGE
No adjustments are possible. In the event of malfunction, check for electrical continuity and
air supply.
T300-1_T500-1_T780
Service / Parts
486 P/N 12261-683
REVISED: January 2015
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