TM 5-3805-280-10
Operating the Machine
USING QUICK-DISCONNECT HITCH
1. The cylinder in the Quick-Disconnect Hitch is powered
by hydraulic oil from the excavator bucket cylinder
which is diverted to the Quick-Disconnect by an electric
solenoid valve. The switch is located on the left side
rear cab glass.
NOTE: The solenoid coil is energized only in the unlatch
position.
2. To attach the Quick-Disconnect Hitch to an attachment
manually lift and rotate the safety lock pin lever on the
A--Quick-Disconnect Hitch Switch
top rear of the Quick-Disconnect Hitch. Fully extend
the bucket cylinder and set the Quick-Disconnect Hitch
switch (A) to the unlatch position. Extend the bucket
cylinder again to place the oil over relief (except for
rock drill attachment). This will activate the cylinder to
the open position.
CED,OUOE042,65 1909DEC991/8
3. Operate the excavator to position the Quick-Disconnect
Hitch in the vertical position (B). The attachment must
be level and resting on the ground.
Continued on next page
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