Voltage regulators used through 1978 were either electro-mechanical or transistorized. To determine whether your regulator is an adjustable type, locate the regulator and note in what manner the cover is secured. If the cover is secured using metal rivets, this is a non-adjustable regulator. If the cover is secured using screws, it is adjustable.
Solid state regulators used on 1979 and later models are not adjustable.
REMOVAL & INSTALLATION
See Figures 1 and 2
- Disconnect the negative battery terminal. On models with the regulator mounted behind the battery, it is necessary to remove the battery.
- Remove the regulator mounting screws or bolts.
- Disconnect the regulator from the wiring harness.
- Position the regulator on the mounting plate. If equipped, the radio suppression condenser mounts under one of the mounting screws; the ground lead under the other mounting screw. Tighten the screws until snug.
- If the battery was moved to gain access to the regulator, install it.
- Connect the negative battery cable. Start the engine, and test the system for proper operation.
Leece-Neville Electro-Mechanical Unit
See Figure 3
- Run the engine for 10-15 minutes to allow the regulator to reach operating temperature. Connect a voltmeter across the battery posts. Turn off all electrical equipment. Check the voltage at the battery. It should be 13.9-14.1 volts. If necessary, adjust the voltage.
- Remove the regulator cover. Voltage may be adjusted by increasing or decreasing the voltage limiter contact gap. Loosen the lockscrew and move the contact gap adjusting arms.
Voltage will drop about1/2volt when the regulator cover is installed and should be compensated for in the adjustment.
- Start the engine and check the voltage. Readjust as necessary.
See Figure 4
- Run the engine to normal operating temperature, then shut it OFF .
- Remove the regulator cover.
- Using a plastic strip as a screwdriver, turn the adjusting screw clockwise to increase the voltage setting, counterclockwise to decrease the setting.
- Install the regulator cover.
- Start the engine and check the voltage reading. Readjust if necessary.