ELECTRICAL
ALTERNATOR
—Functional check
86.10.01
This operation must be performed in two parts. The
first is to prove the alternator’s capacity to produce
current, while the second is to prove the performance of
the integral control unit.
Check capacity to produce current
NOTE: The stated output may be exceeded slightly
when the alternator is cold. To avoid misleading results,
the check should be performed with the unit as near to
its normal operating temperature as possible.
1. Check drive belt adjustment. 86.10.05.
2. Disconnect the multi-socket connectors.
3. Remove the moulded cover.
4. Provide a test circuit as shown.
CAUTION: The alternator contains polarity-
sensitive components that may be irreparably
damaged if subjected to incorrect polarity. Observe
polarity of alternator and battery terminals.
5. Do not connect the variable resistor across the
battery for longer than is necessary to perform the
check.
6. Run the engine.
7. Gradually increase the speed: At 1,500 alternator
rev/min (620 engine rev/min) the light should be
extinguished.
8. Hold the speed at approximately 6,000 alternator
rev/min (2,480 engine rev/min). Adjust the variable
resistor so that the voltmeter reads 14 volts. The
ammeter reading should now be approximately
28 amps/-
9., If the ammeter reading is not approximately 28
amps, the indication is that the alternator requires
overhaul or replacement.
continued
1. Alternator
2. Battery ..
3. Variable resistor.
4. Light
5. Voltmeter
6. Ammeter
12 volt
0-15 ohm—35 amp
12 volt—2-2 watt
0-20 volt
0-40 amp
86.10.01 Sheet 1
Triumph Toledo Manual. Part N o. 545168. Issue 1
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