16
Check the voltage at the rear end of the wiring harness
coming from the control box. If no voltage is detected, the
problem is most likely with the wiring harness coming from
the control box. Repair or replace as necessary.
If the wiring harness checks out, visually check all wires
going back through the Turf Tender including the connectors
behind the valve assembly. If all the wires and connections
appear good, there may be a problem with the vibrator’s motor.
Prior to removal, check for voltage at the motor. The brushes
in the motor are consumable parts and are replaceable. Use
only original DAKOTA replacement parts.
3. If an individual function does not operate or does
not change speeds when the dial is rotated
, perform the
same tests listed above. The dials on the control box and
solenoid(s) on the hydraulic valve assembly may be tested
using the following illustrations. The solenoids are not
serviceable parts and, although rare, may need to be replaced.
If the spinner and/or conveyor speeds do not change as
the dial (on models with speed dials on the control box) is
rotated, test the dial by measuring the input voltage, output
voltage, and output amperage. If the dial proves to be
functioning, test the resistance of the solenoid.
+ -
OFF
OFF
V
mV
mA/A
u
A
V
mV
mA/A
u
A
=
=
=
=
u
A
mA
A
COM
V
Multimeter
CF
IN
EX
COIL
EFC
VALVE
Fuse
Switch
Fuse
12 VDC
Incoming
Power
The voltage reading should
be very close to the voltage
read across the battery
terminals (12.6 to 15 VDC).
If not, check the connections
between the battery and
controller. Be sure they are
clean and tight. If battery
voltage is low, charge or
replace the battery.
MEASURING INPUT VOLTAGE
1
2
3
4
.
.
+ -
OFF
OFF
V
mV
mA/A
u
A
V
mV
mA/A
u
A
=
=
=
=
u
A
mA
A
COM
V
Multimeter
CF
IN
EX
COIL
EFC
VALVE
Fuse
Switch
Fuse
12 VDC
Incoming
Power
With the Master power switch in the
ON position and the dial on the “0”,
the meter should read between 0.20
and 0.25 VDC. With the dial on “100”,
the meter should read between 0.95
and 1.10 VDC. If the readings are out
of spec, replace the dial.
MEASURING OUTPUT VOLTAGE
1
2
3
4
.
.
NOTE: Turn the Master power
switch to the OFF position
before either connecting or
disconnecting the test leads.
+ -
OFF
OFF
V
mV
mA/A
u
A
V
mV
mA/A
u
A
=
=
=
=
u
A
mA
A
COM
V
Multimeter
CF
IN
EX
COIL
EFC
VALVE
Fuse
Switch
Fuse
12 VDC
Incoming
Power
With the Master power switch in the
ON position and the dial on the “0”,
the meter should read between 0.20
and 0.25 ADC. With the dial on “100”,
the meter should read between 0.94
and 1.10 ADC. If the readings are out
of spec, replace the dial.
MEASURING OUTPUT AMPERAGE
1
2
3
4
.
.
NOTE: Turn the Master power
switch to the OFF position
before either connecting or
disconnecting the test leads.
+ -
OFF
OFF
V
mV
mA/A
u
A
V
mV
mA/A
u
A
=
=
=
=
u
A
mA
A
COM
V
Multimeter
CF
IN
EX
COIL
EFC
VALVE
Fuse
Switch
Fuse
12 VDC
Incoming
Power
NOTE: Make sure the Master
power switch is in the OFF
position when conducting
this test.
The solenoid should have a
resistance of 9.6 ohms + 1
ohm @ 77° F. If the reading
is out of spec, the solenoid
is defective.
-
MEASURING SOLENOID RESISTANCE
1
2
3
4
MAINTENANCE
