IC regulators are built onto the alternator. For testing procedures refer to the next information in this section.
REMOVAL & INSTALLATION
- Remove the cable from the negative (-) battery terminal and then remove the cable from the positive (+) battery terminal.
- Disconnect the wiring harness connector at the regulator.
- Unfasten the bolts which secure the regulator. Remove the regulator and its condenser.
- Installation is the reverse of removal.
- Connect a voltmeter up to the battery terminals. Negative (black) lead to the negative (-) terminal; positive (red) lead to positive (+) terminal.
- Start the engine and gradually increase its speed to about 1,500 rpm.
- At this speed, the voltage reading should fall within the range specified in the Alternator and Regulator Specifications chart.
- If the voltage does not fall within the specifications, remove the cover from the regulator and adjust it by bending the adjusting arm.
- Repeat Steps 2 and 3 if the voltage cannot be brought to specification, proceed with the mechanical adjustments which follow.
Perform the voltage adjustment outlined above, before beginning the mechanical adjustments.FIELD RELAY
- Remove the cover from the regulator assembly.
- Use a feeler gauge to check the amount that the contact spring is deflected while the armature is being depressed.
- If the measurement is not within specifications (see the Alternator and Regulator Specifications chart), adjust the regulator by bending point holder P2. (See the illustration.).
- Check the point gap with a feeler gauge against the specifications in the chart.
- Adjust the point gap, as required, by bending the point holder P1. (See the illustration).
- Clean off the points with emery cloth if they are dirty and wash them with solvent.
- Use a feeler gauge to measure the air (armature) gap. If it is not within the specifications (see the Alternator and Regulator Specifications chart), adjust it by bending the low speed point holder. (See the illustration).
- Check the point gap with a feeler gauge. If it is not within specifications, adjust it by bending the high speed point holder. (See the illustration.) Clean the points with emery cloth and wash them off with solvent.
- Check the amount of contact spring deflection while depressing the armature. The specification should be the same as that for the contact spring on the field relay. If the amount of deflection is not within specification, replace, do not adjust, the voltage regulator.
Go back and perform the steps outlined under Voltage Adjustment. If the voltage still fails to come within specifications, the alternator is probably defective and should be replaced.