67 Barracuda Heavy Electric Load
After starting it should have moved to C (battery charging) for a few minutes. Gradually returning to the center as the battery finishes charging.
Comparing with engine off, this last photo indicates slight discharging.
When the engine is running, discharge indicates the battery is supplying power to run the car.
Caveat: True only if the battery is the only item attached to the battery side of the ammeter.
1. Remove the field terminal connections and check whether either field terminal is grounded. Using an ohmmeter or continuity setting touch one probe to a terminal and the other to the alternator housing. Check both terminals. If either is grounded. Stop. Alternator is set up as a grounded field alternator.
2. Check that the field circuit is complete. Touch one probe to each terminal. They should connect, although there will be resistance from both the rotor windings and the carbon brushes. If they don't connect, stop.
3. If it passes both tests, then with the engine running at slow idle, connect the ignition feed to the field circuit (blue wire), and connect the other terminal to ground. The voltmeter connected to the alternator output stud should jump up to 14 volts. Do not rev the engine as there is no votlage regulation duing this test.
This completes the circuit for powering the rotor.
The water pump looks like its cast iron and likely the correct for pre-70 cars.
If so, then then yes all that is needed is the clutch and the clutch fan.
Shrouds are most helpful when the car is not moving, although Chrysler did not always deem them neccessary on non-A/C equiped cars.
Well maybe not 40 hp. That's a bit of hyperbole.
The clutch fan is somewhere in between no fan and an electric fan in terms of hp savings at high rpm.
Plus, turning the alternator, especially when its working hard, also crauses noticible drag on the engine.
It should have moved slightly toward D (battery Discharge) while starting.
After starting it should have moved to C (battery charging) for a few minutes. Gradually returning to the center as the battery finishes charging.
Comparing with engine off, this last photo indicates slight discharging.
When the engine is running, discharge indicates the battery is supplying power to run the car.
Caveat: True only if the battery is the only item attached to the battery side of the ammeter.
You can test a few things before doing that.
1. Remove the field terminal connections and check whether either field terminal is grounded. Using an ohmmeter or continuity setting touch one probe to a terminal and the other to the alternator housing. Check both terminals. If either is grounded. Stop. Alternator is set up as a grounded field alternator.
2. Check that the field circuit is complete. Touch one probe to each terminal. They should connect, although there will be resistance from both the rotor windings and the carbon brushes. If they don't connect, stop.
3. If it passes both tests, then with the engine running at slow idle, connect the ignition feed to the field circuit (blue wire), and connect the other terminal to ground. The voltmeter connected to the alternator output stud should jump up to 14 volts. Do not rev the engine as there is no votlage regulation duing this test.
This completes the circuit for powering the rotor.
Look at the lens and you can get a bit more information. But this is side track for now. Start a different threwad if you're interested.
We can't see the radiator in the photos. '67 was unique but similar to '68-69.
The water pump looks like its cast iron and likely the correct for pre-70 cars.
If so, then then yes all that is needed is the clutch and the clutch fan.
Shrouds are most helpful when the car is not moving, although Chrysler did not always deem them neccessary on non-A/C equiped cars.
Sure at the top end of the quarter mile.
Well maybe not 40 hp. That's a bit of hyperbole.
The clutch fan is somewhere in between no fan and an electric fan in terms of hp savings at high rpm.
Plus, turning the alternator, especially when its working hard, also crauses noticible drag on the engine.