Here I am

International Bus Help

Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff

Mini van tag

Who's gonna be the first to put a new 6 speed auto in a 2nd gen?

Hello, Maybe ya'll can help me on this





I'm working on my church's bus; (2002 Int 3400 T444E :rolleyes: servicing etc... found 3 broke bolts in the alt/ac bracket, fixed that. All is well until I reinstall the alternator.



Now, a week has passed since I removed this stuff, while I was running down parts etc... I labeled both the pos & neg wires, but somehow I let the regulator wiring slip by :( I made a mental note of where each wire went, but you know how that goes :rolleyes:



I got everything back together OK, but alt was not charging. I have tried every possible wiring combination I can think of, it's either not charging or Full-Load 18+ :eek: Kinda funny, alt charges normal on that particular setup, but after 1800 rpm it goes full load - not good.



I only remember 2 wires going to 2 terminals on the regulator, but now I have 3?? Could have missed it upon removal, not sure. I think the wires are colored orange/blue/black.



I can usually hold my own on mechanical stuff, (it's how I make my living), but this one's got me stumped. My alternator/wiring skills are a little rusty to boot. This ol PSD has me messed up :-laf Any help with this would be appreciated. Sorry for the long post.



Thanks, Steven
 
Last edited:
Ok, I checked this wiring today. All three of the extra wires have 12v, now I have tried every possible combination, and the only one I can get anything out of is all three wires on terminal #1, but after it hits 14v it keeps climbing. Thats not right, still some more checking to do, but I have cleaned all the cables on the batteries and alternator; prob going to load test the batteries tomorrow.



Steven
 
I think the black wire should be a ground. Is the tach acting up?? It has been a long time since I have worked on one, but I believe the blue is the tach feed. The regulator should be marked, what are they??
 
Tach works ok,



I looked all over for something to go by, I couldn't find any markings at all; regulator or otherwise. Don't even know make of alternator, doesn't look like original, the pulley bears signs of previous removal. I was thinking the black wire was a ground, but it has 12v too. Unless there's a short somewhere.
 
You must have lost a bet to work on your church bus eh? A football game was it?



Most all the bus alternators around here have only a hot wire and a ground wire. I have a few left that use the exciter wire (Bat pos) and a tach wire. There are many different types of alternators out there. Too may combinations to mention. I won't be of any assistance here as my IH bus does not have any wire to a regulater.



You need to call the IH bus dealer and ask what goes where.
 
I stand corrected(and humbled). Hoefler had it right, it WAS a ground.



Dunno how it slipped by, but it did; because i had all my grounds labeled :(

I was also under the mistaken impression that the alt. was internally regulated, but it was not. After I found the regulator it was a breeze to troubleshoot.



Hmmm, no lost bets GL, but sometimes i wonder :rolleyes:





Anyway it works great now. Thanks for the help guys :cool:



Steven
 
Last edited:
Back
Top