Solenoid Valve Coil (Tow Hitch Kit)
The ProCore Processor tow hitch kit uses four (4) sole-
noid valve coils on the hydraulic tow hitch manifold (Fig.
3
15).
When the solenoid valve coils are energized, tow
vehiclehydraulicflowcanbedirectedtothetowhitchhy-
draulic offset cylinder to change the position of the Pro-
Core Processor behind the tow vehicle.
1
UP
NOTE: The four (4) tow hitch manifold solenoid valve
coils are identical and can be reversed for testing pur-
poses.
Testing
4
NOTE: A solenoid coil does not have to be removed
from the cartridge valve or manifold for testing.
2
1.
OFF position. Remove key from the ignition switch.
Make sure that Processor ignition switch is in the
Figure 15
2.
the solenoid valve coil that is to be tested.
Disconnect wire harness electrical connector from
1.
2.
Solenoid coil S1
Solenoid coil S2
3.
4.
Solenoid coil S3
Solenoid coil S4
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
fromfromthemeasured valueofthecomponent youare
testing.
3.
terminals. Resistance of the solenoid coil should be
approximately 7.1 ohms.
Measure resistance between the two coil connector
4.
Valve Coil in the Service and Repairs section of this
chapter.
If solenoid coil needs replacement, see Solenoid
5.
After testing, reconnect wire harness electrical con-
nector to the solenoid valve coil.
ProCore Processor
Page 5 -- 11
Electrical System
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