Is the CUCV alt a 15 SI or a 17 SI?

[ida34]

I am going to try to rebuild this thing in the next week or so and Ebay seems to have some OK deals on rebuild kits with the Regulator and such. The only question I have is which case the CUCV with two GM 100 amp alts uses? If no one knows I will make a trip to the alt shop on Tuesday.

Thanks
Chuck

 

[CCATLETT1984]

I'm not sure which model it is, your best bet would be the alt. shop. I cant seem to find any pics online showing the differences between the two cases.

 

[n1vbn]

I am going to try to rebuild this thing in the next week or so and Ebay seems to have some OK deals on rebuild kits with the Regulator and such. The only question I have is which case the CUCV with two GM 100 amp alts uses? If no one knows I will make a trip to the alt shop on Tuesday.

Thanks
Chuck

What all CUCV's have are 27 SI 100 amp alternators. Drivers side? Use any civilian alternator of the proper 27 SI type. Passenger side needs replacing? Make sure it has the insulation on the ground post for an Isolated ground alternator as the number two alternator receives 14 volts from alternator number one and outputs 28 volts to the positive buss bar to charge the 24 volt side.

Send me an email and I will send you a PDF file with directions from Delco Remy how to rebuild and service the 10 SI, 15 SI and 27 SI alternators.

Jim

 

[ida34]

RE: Re: Is the CUCV alt a 15 SI or a 17 SI?

I went to autozone and got a "univeral" rebuild kit with bearings, many brushes, voltage regularor, and diode trio. The diode trio was the wrong one but for $19.99 I went ahead got everything. The regulator alone was $12. I will check my diode trio today to make sure they are all good. I will also fabricate the connector that went bad. The rectifier looks good and I hope it works out alright.

Jim,
I appreciate your offer. I have rebuilt them before but wanted to avoid getting the wrong parts online. I found out that Autozone had them so I took my parts to match them up. Thanks for the help.

Chuck

 

[Craig C]

Alternators

Are the two interchangable or not. I have a spare #1 alternator and now my #2 is bad.

Can I use it to replace the #2 alt. ?

 

[Michael]

RE: Alternators

Yes, the original alternators were interchangeable. It should be easy to check the ground to see if it is isolated with a volt meter in case you didn't get your truck straight from the military. You never know what some third party might have done before you got the truck.