Downloads

usma41 · Post by **usma41** » Sat Dec 16, 2006 10:14 pm

I went to the downloads page for info on a Autolite Voltage regulator in a M38, and anything there did not match what I have Part no. VBC-4004UT. I need the gauge gaps for it anyone know?

Post by **wesk** » Sun Dec 17, 2006 12:45 am

With the Auto-Lite/Prestolite stuff the core number xxx4002xx grows as the new improved versions come out. The TM 9-1825B was last dated 1952.

In addition to the specific measurements you asked for there are a few tests that are slightly different as well on the 4004 version. They can be found on the Prestolite service letters I have on my photo page.

http://autolitemanuals.mypicgallery.com/

Circuit Breaker
Armature core gap = .066 to .070
Contact point gap = .047 min.

Voltage Regulator
Armature core gap = .052 to .056 on VBC4004UT date code before 12X.
Armature core gap = .057 to .060 " " " " 12X and on.

Current regulator
Armature core gap = .052 to .056 on VBC4004UT date code before 12X.
Armature core gap = .057 to .060 " " " " 12X and on.

usma41 · Post by **usma41** » Sun Dec 17, 2006 4:08 am

Thanks Wes

usma41 · Post by **usma41** » Sun Dec 17, 2006 4:24 am

Wes, There's no way I can read that, so I'll wait until I get some printer ink and try that.

Post by **wesk** » Sun Dec 17, 2006 9:38 am

You click on the thumbnail and you'll get the half size photo. Then you click on the photo being displayed and you'll get the full size photo in a pop up window.