PD4107 Voltage Reg

[glerler]

This is for GM  PD-4107.  The voltage reg is bad.  Putting out 17.8v+  for a 12v system.  This has the original Delco reg which is obsolete. What is the recommended replacement. I have attached a pic of the reg and gen.  Thx

[luvrbus]

Replacement is 10503807 Delco for that regulator,there also some aftermarket regulators to replace the 10503807 do a google search,aftermarket regulators are about 1/2 the price of Delco 

[glerler]

Thanks for the info
I will check it out

[TomC]

I had the same setup. When I replaced the DN50 alternator with a rebuilt, I also replaced the big box regulator (which is transistorized) with a digital regulator that's about the size of a pack of cigs. Also, my regulator is inside the bus away from the high heat of the engine compartment. Good Luck,  TomC

[uncle ned]

What is the make and part number of the digitized regulator that you used

uncle ned

[Oonrahnjay]

I had the same setup. When I replaced the DN50 alternator with a rebuilt, I also replaced the big box regulator (which is transistorized) with a digital regulator that's about the size of a pack of cigs. Also, my regulator is inside the bus away from the high heat of the engine compartment. Good Luck,  TomC

What is the make and part number of the digitized regulator that you used
uncle ned

     And is it programmable or adjustable???   Thanks.   BH

[luvrbus]

Lot of us use the Balmar 3 stage regulator, they are a little pricey though