04-02-2020, 05:27 PM
Hi
I am fairly new to the scene and have a 1936 AAL Tourer. While the car is hibernating for the winter, I am trying to sort a couple of issues, one of which is the ability to charge the battery. The ammeter never shows a positive reading and I have to charge the battery every couple of runs.
So, having checked on the vehicle and getting no sign of Any Dynamo output I have removed the unit to check it over properly. On first look the internals were very oily, so Ah it needs a clean I think! However on stripping down the puzzle expands. I find one of the leads to the brush terminal disconnected (the one which goes to the D terminal), but the screw to which it attaches was tight so obviously it had not come undone. Also I find a small square nut sitting inside and no screw holding the moveable third brush in place.
So my initial thoughts are clean up all the oil, polish the commutator, new brushes, attach the cable and replace the screw!
However, I was puzzled to find two roller bearing inside, one at each end and it turns out my Dynamo is 28-32 CAV DEL unit. A little investigation and I now understand that this unit has internal Winter/Summer Field windings, but I have it wired into a 36 CFR2 control unit with its own internal winter/summer resistor.
Does anyone have any knowledge of using this early Dynamo on a later vehicle and could the disconnected wire and removed screw be a mod to make it work?
Help!
I am fairly new to the scene and have a 1936 AAL Tourer. While the car is hibernating for the winter, I am trying to sort a couple of issues, one of which is the ability to charge the battery. The ammeter never shows a positive reading and I have to charge the battery every couple of runs.
So, having checked on the vehicle and getting no sign of Any Dynamo output I have removed the unit to check it over properly. On first look the internals were very oily, so Ah it needs a clean I think! However on stripping down the puzzle expands. I find one of the leads to the brush terminal disconnected (the one which goes to the D terminal), but the screw to which it attaches was tight so obviously it had not come undone. Also I find a small square nut sitting inside and no screw holding the moveable third brush in place.
So my initial thoughts are clean up all the oil, polish the commutator, new brushes, attach the cable and replace the screw!
However, I was puzzled to find two roller bearing inside, one at each end and it turns out my Dynamo is 28-32 CAV DEL unit. A little investigation and I now understand that this unit has internal Winter/Summer Field windings, but I have it wired into a 36 CFR2 control unit with its own internal winter/summer resistor.
Does anyone have any knowledge of using this early Dynamo on a later vehicle and could the disconnected wire and removed screw be a mod to make it work?
Help!