Starter/Generator & Voltage Regulator
1.
Apply parking brake.
Place machine shift lever in the NEUTRAL position.
7. Reconnect green wire connector from the regulator
and test voltage regulator:
2.
cess to electric components by removing the electrical
cover.
Raise cargo box and secure with prop rod. Gain ac-
A. Set multimeter to VDC. Connect red (+) probe of
the multimeter into the green wire connection. Con-
nect black (--) probe of the multimeter to a known
good ground.
3.
Make sure all wires in the charging circuit are con-
nected correctly and tightly. Note the correct location of
starter/generator cable and voltage regulator wire atthe
start/run solenoid (Fig. 14).
B. Start and run the engine at mid--range RPM.
C. The measured voltage should be approximately
2
VDC when battery is charging and from 6 to 8 VDC
4.
vehicle for several minutes so the voltage regulator is
warmed up. Stop engine and turn key to OFF.
Make sure the battery is fully charged. Operate the
when battery is fully charged. This voltage may rise
to 14 VDC when the accelerator pedal is released
and the engine is coasting to a stop.
5.
Test charging circuit:
D. If measured voltage is incorrect, stop engine and
replace voltage regulator. Retest charging circuit
(Step 5 above).
A. Set multimeter to VDC. Connect red (+) probe of
the multimeter to the positive (+) battery post. Con-
nect black (--) probe of the multimeter to thenegative
8. Stop engine and remove multimeter leads.
(--)
battery post.
2
1
B. Start and run the engine at mid--range RPM.
3
C. Battery voltage should rise to approximately 14.5
VDC identifying a correctly operating charging cir-
cuit. If the battery has a low charge, this may take a
few minutes.
4
D. Stop engine and turn key to OFF.
6.
If battery voltage did not rise to 14.5 VDC, test start-
er/generator:
5
A. Disconnect green wire connector from voltage
regulator (Fig. 14). Connect disconnected green
wire lead from starter/generator to ground with a
jumper lead.
Figure 14
4.
5.
1.
2.
3.
Start/run solenoid
Main contact post
Voltage regulator
Cable to starter/gen.
Green wire connector
B. Set multimeter to VDC. Connect red (+) probe of
the multimeter to the positive (+) battery post. Con-
nect black (--) probe of the multimeter to thenegative
4
(--)
battery post.
3
IMPORTANT: Run engine only long enough to
getbattery voltage reading andnotformorethan
15
seconds.
C. Start and run engine at mid--range RPM.
2
D. Battery voltage should rise steadily to approxi-
mately18VDCidentifyingacorrectlyoperatingstart-
er/generator.Anincorrectreadingindicatestheneed
for starter/generator repair.
1
Figure 15
3.
4.
E. Stop engine and turn key to OFF.
1.
2.
Terminal A1
Terminal A2
Terminal F1 location
Terminal DF location
Workman MD/MDX
Page 6 -- 13
Electrical System
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| Language | English |
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