M38 Voltage regulator problems

lucianom38a1 · Post by **lucianom38a1** » Wed Jun 09, 2010 5:35 pm

Fellows,

My M38's 24V generator regulator just died... I'm having problems to find another one in good conditions here in Brazil.
So if some colleague knows about where I can find a good one to buy, please let me know!.

Thanks!

Luciano

Post by **wesk** » Thu Jun 10, 2010 8:11 am

Hello Luciano,

Which regulator did you have? Mechanical (Auto-Lite, Prestolite, Delco), or Transistorized ( Vap Air / Motorola )? The mechanicals are easily repaired and there is slowly surfacing some data and parts info to support repair of the others.

Auto-Lite (Prestolite) Mechanical

Delco Mechanical

Vap Air Transistorized

jeepers52 · Post by **jeepers52** » Thu Jun 10, 2010 1:43 pm

Hello Wesk,

What usually goes wrong with the mechanical ones, and who should we trust to fix them?

Thank you

Post by **wesk** » Thu Jun 10, 2010 3:02 pm

Trust yourself and follow the Manual TM 9-1825B dated 1952 for Auto-Lite/Prestolite and TM 9-8627 Dated 1953 for Delco. The most common problem is dirty and sticking contacts. You clean and dress those contact points the same way you do ignition points. A very fine metal point file and a quality electric contact cleaner.