SUPERCEDES
TITLE
DATE
SECTION
CINCINNATI, OHIO
MFG., INC.
22345b
C200
11-3-00D
3-4-03E
INSTALLATION DWG
HT40KX, HT50KX
CONTROL FUNCTIONS
WINCH "UP" and "DOWN" - Raises and lowers the load with the winch.
BOOM "UP" and "DOWN" - Raises and lowers the boom elevation angle. The boom elevates from
8 degrees below horizontal to 75 degrees above horizontal.
BOOM "OUT" and "IN" - Extends and retracts the boom. The boom hydraulic extension stroke is 6
ft.
ROTATION "L" and "R" - Controls the left and right direction of the crane rotation. The crane rotation
is limited to 400 degrees.
POWER - (Non Proportional Systems) Energizes safety shutoff valve. See page 22328 for detailed
operations instructions and warnings.
TRIGGER (Proportional Systems Only) - Varies the flow rate delivered to the crane valve. The
farther the trigger is pulled, the faster the selected crane function operates.
OVERLOAD SENSING SYSTEM
This crane is equipped with an Overload Sensing System. If the capacity of the crane is exceeded,
the "Winch Up", "Boom Down", and "Boom Out" functions will be shut down. The "Winch Down",
"Boom Up", and "Boom In" functions will continue to operate and can be used to relieve the overload
condition. The "Rotation" function also will continue to operate.
For crane models HT25 serial numbers 80157, HT40 serial numbers 84092 and HT50 serial
numbers 85086 and below, the Overload system is inoperative if the boom elevation is at the bottom
or top limit of travel. To relieve this condition, raise or lower the boom slightly before lifting the load.
Cranes with serial numbers above the aforementioned have been modified to allow the Overload
system to remain active at the top of boom travel.
TWO-BLOCK SENSING SYSTEM
This crane is equipped with an anti two-block device that is mounted at the tip of the boom. If the
snatch block/overhaul weight contacts the device the "Winch Up", "Boom Down", and "Boom Out"
functions are disabled. The "Winch Down", "Boom Up", and "Boom In" functions will continue to
operate and can be used to relieve the two-block condition. Refer to Drawing 22449 for replacement
parts and configuration information.
MANUAL TELESCOPIC BOOM
The 10 to 20 ft. boom has a 4 ft. manual telescoping section in addition to the 6 ft. power extension.
A pin locks the manual extension into either the extended or retracted position.
POWER TELESCOPIC BOOM
The 10 to 20 ft. boom has a 4 ft. power telescoping section in addition to the 6 ft. power extension.
TRUCK SETUP & OUTRIGGERS
1. The truck should be parked on ground that is as level and as firm as possible when using the
crane.
2. The center of the crane should be positioned close enough to the job so that it can be operated at
a reach that puts the load within the rated capacity of the crane.
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