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Pro Sweep Page 4 -- 15 Electrical System
Solenoid Valve Coil
The hydraulic system ontheProSweep uses five (5)so-
lenoid valve coils on the hydraulic control manifold (Fig.
13).
Testing
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
apply vehicle parking brake, stop engine and remove
key from the ignition switch.
2. To ensure that electrical power is removed from Pro
Sweep, disconnect sweeper power harness from tow
vehicle.
NOTE: The solenoid coil does not have to be removed
from the cartridge valve for testing.
3. Unplug wire harness connector from solenoid valve
coil.
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 measuredvalue of the componentyouare
testing.
4. Using a multimeter (ohms setting), measure resis-
tance between the two connector terminals on the sole-
noid coil. The resistance for the solenoid coils is
identified below:
Solenoid Coil
Resistance
SV1 (2 coils used) 7.1 ohms
SV2 8.6 ohms
SV3 8.6 ohms
SRV 7.1 ohms
5. If solenoid coil needs replacement, see Solenoid
Valve Coil in the Service and Repairs section of this
chapter.
6. Connect wire harness connector to the solenoid
valve coil.
7. Connect sweeper power harness to tow vehicle.
1. Solenoid SV1
2. Solenoid SV2
3. Solenoid SV3
4. Solenoid SRV
Figure 13
2
4
3
1
FRONT
RIGHT
Electrical
System