Alternator
Equipment to Test Alternators
The following equipment is recommended to test and repair
alternators.
Contents
Alternator Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment to Test Alternators . . . . . . . . . . . . . . . . . . . . . . .
Digital Multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Digital Multimeter
Use a Digital Multimeter. The meter may be used to read
volts, ohms or amperes, and test diodes, when leads are
inserted in appropriate receptacles, Fig. 106.
1/2 Amp Alternator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Alternator Output . . . . . . . . . . . . . . . . . . . . . . . . .
Install Stator Studs . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Stator Air Gap . . . . . . . . . . . . . . . . . . . . . . . . .
Alternator Specifications
Alternator type . . . . . . . . . . DC only
Alternator output* . . . . . . . not less than
(at 2800 RPM)
0.5 amps DC (+)
* Alternator output is determined by flywheel alternator
magnet size.
Note: Alternator is rated at 2800 RPM. Output is reduced as
engine speed is lowered.
Fig. 106 – Digital Multimeter
3
1/2 Amp Alternator
2
The 1/2 amp DC alternator is designed to operate as an integral
part of the engine and is separate from the starting and ignition
system. It is intended to provide DC charging current for a 12
volt battery.
2
1
Fig. 105 – 1/2 Amp
•
0.5 amps DC for charging
battery.
1.
2.
3.
Stator assembly
Black
•
•
One black lead from stator.
White connector output lead.
White
1
Alternator Systems – Troubleshooting
Fig. 107 – 1/2 Amp Alternator
Complaint
Possible Causes
1.
Stator assembly
2. Black
Battery not
charging
• Engine RPM too low.
• Defective battery.
•
•
•
•
Loose, pinched, or corroded battery
ground leads.
Loose, pinched, or corroded battery
charge leads.
Open, shorted, or grounded wires be-
tween output connector and battery.
Damaged battery (shorted battery
cells).
Test Alternator Output
Disconnect charging lead to battery at connector.
1. Insert RED test lead into 10 A receptacle in meter.
2.
3.
Insert BLACK test lead into COM receptacle in meter.
Rotate selector to
(DC amps) position.
•
•
Damaged alternator magnets.
Defective stator.
GTS 200
45
Alternator
| Categories | Lawn Mower Manual, Parts and Accessories Manuals, Toro Lawn Mower Manual |
|---|---|
| Tags | Toro GTS 200 |
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| Language | English |
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| Publisher | toro.com |
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