Venturo HT45KX-20, Parts & Installation Manual

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SECTION DATE
SUPERSEDES
TITLE
HT40/50/66KX; PROP
C200
02-21-14D
05-25-11C
HYDRAULIC SYSTEM
22168
®
VENCO VENTURO INDUSTRIES LLC
CINCINNATI, OHIO
B
A
OUT
IN
A B
B
B A
A
B
B
B
B
A
A
A
A
LEFT SIDE VIEW
RIGHT SIDE VIEW
BO BU
BI
RR
WU
BO
RL
WD
RED STEM PROPORTIONAL VALVE
System abbreviations are as follows:
WD - Winch Down
RR - Rotation Right
BI - Boom In (Ext.)
BD - Boom Down (Elev.) BU - Boom Up (Elev.)
BO - Boom Out (Ext.)
RL - Rotation Left
WU - Winch Up
RED STEM
EXPLANATION OF HYDRAULIC VALVE SYSTEM
HT40/50/66KX, PROPORTIONAL ONLY
OVERVIEW
This proportional crane utilizes a proportional valve, which controls the rate at which the hydraulic fluid flows through the
valve bank. When the proportional valve is fully closed, hydraulic fluid bypasses the valve bank and returns directly to the
tank. When the proportional valve is fully open, hydraulic fluid cycles through the valve bank and allows the crane to
function at full speed. When the proportional valve is at any setting between, a portion of the fluid is allowed through the
valve bank, with the remainder returning to the tank.
The four [4] crane functions (winch, rotation, boom elevation, and boom extension) are controlled by four [4] separate
valve sections. Each valve section has two [2] solenoid coils (and tow [2] manual overrides) which control the direction
that the function operates (e.g. winch up vs. winch down). For a given crane function and direction (e.g. winch up), the
solenoid coil and associated manual override reside on the same side of the valve bank (both "push").
MANUAL OVERRIDE SYSTEM
Should an electrical failure occur, your Venturo crane can be operated manually.
The manual overrides are intended for emergency use only and should not be used for normal operation.
To operate in manual override mode:
(1) Override the proportional valve by turning the red stem on the valve as stated below
- For override operation, rotate stem clockwise (the farther the stem is turned the faster the crane will operate)
- To return to normal operation, rotate the stem counter-clockwise until it stops
(2) Determine the coil / override associated with the function you wish to operate, then insert a small diameter object (an
- Allen wrench works well) into the detent on the end of the valve stem and firmly press inward. For example,
pushing the stem labeled 'A' on the first bank (refer to illustration) will actuate winch up
EMERGENCY STOP
In the unlikely event that a function of the crane does not stop once the function's toggle switch is released, the proprtional
crane can be stopped by releasing the trigger.
W A R N I N G
!
·
For normal crane operation, the proportional valve must be in the 'normal' position (as described above). To verify
'normal' operation, you may set the pendant (or radio) control aside and actuate a single crane function by pushing
inward on any of the manual override pins, located at the ends of each function control valve. If that function
operates, the proportional valve is still in manual override. Check the position of the proportional valve's red stem
to insure that it is fully counter-clockwise.
!