Hey all, I'm looking to swap my toast externally regulated 24v 3B alternator for an internally regulated 2H alternator. I dont see why there would be fitment issues, but has anyone done this? Thanks!
2H and 3B alternator compatibility (1 Viewer)
- Thread starter vanisle3b42
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Tapage
Club 4X4 Panamá
are you willing to re wire it .? clearly you are not gonna need the external regulator anymore .. ( assuming both are 24V ) and sure both will have the vacuum pump attached behind .. ( be sure both are in good working order, good moment to replace the oil o ring and carbon blades .. )
iirc you can add an internal regulator to a non internally regulated alternator fairly easily. If you take the two to A&B starters by the airport they can rebuild it to use an internal regulator. I have had them build/modify a few for me over the years. The ear mounting pattern changed slightly over the years and model to model 24/12, 2h/3b but a lot of parts are interchangeable.
stevebradford
In the shop
Maybe im just confused by terminology but my 12v 3b's have the voltage regulator mounted on the side into the alternator. I would have called that an internally regulated alternator?
Maybe its a difference between 12v and 24v but I have at least one 24v kicking around and it's looks the same.
A
Edit: A little more info aparently some were externally regulated. In here a guy talked about gutting a 2h to swap the internals. 3b 3.4 4 cylinder diesel alternator
If the bearings are good there's not a lot to go wrong with these. voltage regulator, brushes or a diode none are big deal to replace or rebuild.
Maybe its a difference between 12v and 24v but I have at least one 24v kicking around and it's looks the same.
Edit: A little more info aparently some were externally regulated. In here a guy talked about gutting a 2h to swap the internals. 3b 3.4 4 cylinder diesel alternator
If the bearings are good there's not a lot to go wrong with these. voltage regulator, brushes or a diode none are big deal to replace or rebuild.
Last edited:
- Thread starter
- #5
Awesome! Thats great to know. The shop I work for has an account with Brian Roberts auto electric in Victoria so I'll give them a call to see if they can convert it.
The issue isn't with its rebuild-ability as this one was rebuilt about 10 years ago and never run on the truck.. But it developed issues somehow after sitting for 10 years haha.
