Lift Switch (Fig. 15)
The lift switch is a three position switch. Switch position
is maintained in center position with no circuits made.
Test the switch by disconnecting the wires from the
switch terminals and connecting a continuity tester or
ohm meter across terminal 2 (common) and terminal 1
or 3. With switch pushed toward keyway in threads,
terminals 1 and 2 are made. With switch pushed away
from keyway in threads, terminals 2 and 3 are made.
Linear Actuator (Fig. 16)
The linear actuator has a bi-directional electric motor
which engages a clutch and screw mechanism to ex-
tend or retract a rod and raise or lower the transport
wheels.
To test the actuator:
1. Disconnect the wiring connector.
2. Connect a 12 volt battery so the negative (–) terminal
is connected to the red wire of the actuator connector.
When the positive (+) battery terminal is connected to
the yellow wire the actuator motor should operate to
extend the actuator cylinder, raising the wheels to aerate
position.
3. Connect a 12 volt battery so the negative (–) terminal
is connected to the yellow wire of the actuator connector.
When the positive (+) battery terminal is connected to
the red wire the actuator motor should operate to retract
the actuator cylinder, lowering the wheels to transport
position.
1
Figure 15
1. Lift switch
2
1
Figure 16
1. Linear actuator 2. Wiring connector
Linear Actuator Specifications
Rod end play 0.070 max.
Current draw 26 amps max.
Voltage 12 VDC
Speed 3/4 in. per second at maximum
load
Testing Page 5 - 22 HydroJect
™
3000
