12-10-2021, 05:57 PM
Odd one - posting to see if someone immediately suggests the weak point....
Charging system with converted CFR2 ( Conrad type rectifier diode for cutout and a resistor to replace the old coiled resistance wire), PLC2 switch and 3 brush late dynamo was fine and running well. Some tweaking of third brush seemed to draw an end to its function, with the red ign light remaining on at all times.
Stripped dynamo off and re-soldered the 3rd brush lead; checked everything, re-assembled.
No difference.
Stripped dynamo off with distributor still attached. Connected joined top terminals to battery positive and case to negative. It motored.
Should I have noted how fast this should be?
Put it back on - no difference.
There are no recent changes in the wiring locations and its all new. I've checked for wire fall-outs and checked continuity between D and F locations on the CFR2 and the end of the loom to the dynamo - all fine.
I'm presuming the resistance is not at fault - could this be a diode failure and how likely is that? Is it possible that the dynamo motoring was too slow and there is some partial fault in the innards? I'm thinking that the 3rd brush wire break COULD have been as a result of pulling the end of the dynamo off, so the "repair" there may be a red herring.
Hope someone recognises something they have been through before...
Charging system with converted CFR2 ( Conrad type rectifier diode for cutout and a resistor to replace the old coiled resistance wire), PLC2 switch and 3 brush late dynamo was fine and running well. Some tweaking of third brush seemed to draw an end to its function, with the red ign light remaining on at all times.
Stripped dynamo off and re-soldered the 3rd brush lead; checked everything, re-assembled.
No difference.
Stripped dynamo off with distributor still attached. Connected joined top terminals to battery positive and case to negative. It motored.
Should I have noted how fast this should be?
Put it back on - no difference.
There are no recent changes in the wiring locations and its all new. I've checked for wire fall-outs and checked continuity between D and F locations on the CFR2 and the end of the loom to the dynamo - all fine.
I'm presuming the resistance is not at fault - could this be a diode failure and how likely is that? Is it possible that the dynamo motoring was too slow and there is some partial fault in the innards? I'm thinking that the 3rd brush wire break COULD have been as a result of pulling the end of the dynamo off, so the "repair" there may be a red herring.
Hope someone recognises something they have been through before...