Service Manual

Solenoid Valve Coil
The hydraulic system on the Pro Sweep 5200 uses four
(4) solenoid valve coils on the hydraulic control manifold
(Fig. 9).
Testing
NOTE: T
he solenoid does not have to be removed from
the cartridge valve for testing.
1. Make sure tow vehicle ignition switch is in the OFF
position
or that Pro Sweep power harness is unplugged
from tow vehicle. Unplug solenoid valve coil electrical
connector.
2. Apply 12VDC source directly to the solenoid coil. Lis-
ten for solenoid to switch on.
Figure 9
2
4
3
1
3. Remove 12VDC source from the solenoid coil. Lis-
1. Hopper up solenoid (S1)
3. Brush solenoid (S3)
ten for solenoid to switch off.
2. Demand solenoid (S2)
4. Down solenoid (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
from from the measured value of the component you
are
testing.
4. Measure resistance between the two coil connector
terminals. Resistance of the solenoid coil should be
approximately
7.6 ohms.
5. If solenoid coil needs replacement, see Solenoid
V
alve Coil in the Service and Repairs section of this
chapter.
6. Reconnect electrical connector to the solenoid valve
coil.
Electrical
System
Pro Sweep 5200 Page 4 – 9 Electrical System