Voltage Regulator Help

[CWRoady]

Reposting my question I mistakenly removed earlier. I have changed out the old mechanical Voltage Regulator on my 1955 R50 for a new unit from EME. Unfortunately the instructions aren’t very detailed and EME buys the units from Ulis and isn’t familiar with installation.

Clearly I need to dig deeper into the /2 Electrical info from Doug Rinckes since my skills are slim here, but using this pic from his manual in concert with the instructions with the new unit lead me to think I installed the unit correctly .. either I didn’t, or there are other problems I am unaware of.

A new Motoblat battery showing 6.4V actually drops in voltage and is all over the map when I go off idle and add RPM’s. My hope was some of you have done this change and can confirm a correct or incorrect connection on my part. Any advice or direction you can point me would be appreciated.

[wa1nca]

Yes ok
The resistor has been removed
And B+,D+,DF are connected correctly

The wire going from the 30/51 (B+) generator to the 30/51 on the new regulator looks like crap !!

Your commutator look dirty and is a classic problem with weak brush springs or uneven wear of the brushes

Also check the field winding for intermittent connection
Remove one field winding and should measure 2.5-4.00 Ohms from each end and dirt inside the field winding touching the commutator

[CWRoady]

thank you Tommy, guidance sincerely appreciated.

That wire has the fibrous sheathing fraying (fortunately it is not bare wire underneath) .. I did add some shrink tube to it for insulation since this pic was taken. I thought to replace it but it is attached under the post and I am not sure how to remove it.