I would like to add the second alternator to my 1997 PSD so I can charge batteries in my slidein P/U camper. My local dealer does not appear to have the information I need to acquire the bracket for the second alternator commonly referred to as the Ambulance option. Does anyone have part numbers to add this option. Are there any after market sources for the bracket and associated hardware.

Thanks,

pbgsho2

 

Hey I was thinking of the same thing............for putting a rv air conditioner on my camper shell for my dogs.........using a inverter and stuff.........a extra alternator may put a lot more drag on your engine.........how about a bigger alternator to charge those batteries.........if you look around there are places making really big alternators to replace your original one that will put power into those extra batteries...........seem to remember they are about 400.00 or so...............I'm going to replace mine when my original one goes bye bye or I find a cheap RV unit which ever one comes first.

 

Dual alternators were not an option on the OBS. The alternator package consisted of a HUGE case 215 amp alternator. It fits the stock location with some trimming of the bracket but it bolts right up. It requires a belt that is a 1/2 inch longer and also requires some wiring changes. I will post some more info on it tonight when I get home

 

Seems I remember seeing a belt routing diagram that showed 2 alts on a 7.3L. Would that have been for a Super Duty? Why wouldnt it work on an OBS?

 

Found it

 

Now that I study that pic I see It has no vacuum pump, and the alt and air conditioner compressor are different.

 

Yep dual alts available on the SD but not on the OBS.
Pictures for the swap
215 Amp Alternator and New Battery Cables pictures from friends & fun photos on webshots
Threads on the swap
215 amp alt belt - Diesel Forum - The Diesel Stop.com
high amp alternator - Diesel Forum - The Diesel Stop.com
Complete details on 215 Amp alternator mod... - Diesel Forum - The Diesel Stop.com
215 amp alt. part # - Diesel Forum - The Diesel Stop.com
130A to 215A alternator swap questions - Diesel Forum - The Diesel Stop.com

 

how meany amps is the stock alt,

 

165 I believe

 

Its a Ford 3G alt rated 130 amps.
I have seen (never used) kits to upgrade the 3G to 200 amp.
HD Reg and rect is needed.

RJM Injection Tech Alternator Accessories & Parts

Bill

 

From what I understand that's not a good upgrade. More output equals more stress/heat and it doesn't last very long.

 

Agree. Its a reason why i have not tried it.
Dont know anyone that has used it.
Every 3G failure here has been from the brushes
wearing thru the copper ring.

Bill

 

Wasn't there an ambulance package with 2 alternators? Probably f350 or higher cab and chassis.

 

The F350 OBS never came with dual alts. E350 ambulance packages did. The second alt is down low by the CPS.

 

Dual alts 130A and 95A in the e-series was around year 99/2000.
Before that it was a single 215A (fleet) Standard was 130A.

Bill