Triumph TR6 PI Operation Manual page 449

ELECTRICAL
ALTERNATOR - LUCAS TYPES ISACR AND 17ACR
- 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 iJitegral 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 (550 to 720 engine rev/min - variations of
ratio occur according to current market specification
requirements) the light should be extinguished.
8. Hold the speed at approximately 6000 alternator
rev/min (2200 to 2900 engine rev/min). Adjust the
variable resistor so that the voltmeter reads 14 volts.
The ammeter reading should now be approximately
equal to the nominal output given in data for the
appropriate alternator.
9. If the ammeter reading is not correct, 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 TR6 Manual. Part No. S45277 Issue J