Page 5 - 17 Electrical SystemSand Pro 2040Z
Start and Charge Relays
Two (2) relays are used on the Sand Pro machine: start
relay and charge relay. The r elays are attached to the
underside of the control panel next to the operator seat
(Fig. 20). The relays are identical and are identified by
a tag on the wire harness relay connector.
The start relay is used in the starting circuit. When ener-
gized, the start relay provides current to energize the
starter solenoid.
When the charge relay is energized, a circuit from the al-
ternator to the battery is completed to allow battery
charging.
Testing
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the meter test leads together.
The meter will display a small resistance value (usually
0.5 ohms or less). This resistance is due to the internal
resistance of the meter and test leads. Subtract this val-
ue from the measured value of the component you are
testing.
1. Park machine on a level surface, lower rear attach-
ment, stop engine, apply parking brake and remove key
from ignition switch.
2. Remove four (4) screws that secure control panel to
right side console (Fig. 20). Carefully raise control panel
to gain access to relays.
3. Locate relay to be tested on underside of control
panel. Disconnect the machine wire harness connector
from the relay.
4. Remove relay from control panel for testing.
5. Using a multimeter, verify that coil resistance be-
tweenterminals85and86isfrom71to88ohms.
6. Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 8 7. Ground terminal 86 and apply +12
VDC to terminal 85. The relay should make and break
continuity between terminals 30 and 87 as +12 VDC is
applied and removed from terminal 85.
7. Disconnect voltage from terminal 85 and multimeter
lead from terminal 87.
8. Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 87A. Apply +12 VDC to terminal 85. The
relay should make and break continuity between termi-
nals 30 and 87A as +12 VDC is applied and removed
from terminal 85.
9. After testing, disconnect voltage and multimeter test
leads from the relay terminals. Secure relay to under-
side of control panel and connect wire harness connec-
tor to relay.
10.Carefully place control panel to r ight side console
and secure with four (4) screws.
Figure 20
1. Control panel
2. Screw (4 used)
3. Relay(2used)
4. Plug (2 used)
2
3
1
4
Figure 21
86
85
87A 87
30
Electrical
System
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