Diode removal and installation 1968 mopar alternator

[robert horman]

On 1968 Mopar alternator, are diode removal easy? any special tool needed to remove and install diodes? Are diodes glued into the casting? Bob H

 

[twecomm]

You will likely need a press of some sort as the diodes are physically pressed into the alternator casting. No glue or insulation on the diode bodies... On my 66 which has a single field alternator, I have never needed to replace diodes, they rarely fail and usually the bearings go bad long before you would see any electrical issues. Buying a re-man auto parts store replacement alternator is cheap and although rebuilt, they seem to be just fine and come with some warranty period. IMHO, not worth the effort to do a replacement of the diodes.. Why do you think your diodes are defective ?

 

[4406bbl]

A socket or piece of pipe under the casting to support it going out and in is all you need, they tap right out. 3 of them come out in a separate casting, have seen those broken from trying to get by not removing it, also remember there are black and red printed diodes, they do not interchange.

 

[YY1]

Agree with tapping out with a socket.

My Super Bee used to eat diodes.
Never figured out why.
I carried spare alternator halves in the trunk, and swapped diodes out at home.
On some models, they are soldered to a heavy wire.
Those are relatively easy to work with.
Other models have a cast or fabricated bridge connecting the diodes.
Not as easy.