Posted by Rick Larsen on Monday, January 08, 2001 at 2:22PM :
In Reply to: 12V Plow on 24V M37? posted by Joe Cimoch on Monday, January 08, 2001 at 1:00PM :
For years I tried to plow snow with my M37 at my house in NW Ma, hooked to one side of the batteries, it continually drained the battery and shortened its life.
I finally decided something had to be done to make it work!
I converted the old generator to a 60A-24V alternator with a 4 belt pulley. Change over harness is available from Vt. Com. Salvage.
Used a 100A water pump and crankshaft pulley, both 4 belters, to replace the original ones on the truck.
I had my local alternator shop BUILD me a 12V low RPM high out put GM 2 wire alternator, which I installed on top of the 60 Amp one.
Two belts drive the 24V and 2 the 12V.
The 12V is wired to a 3rd battery under the drivers seat, with an on-off switch on the dash to act as an exciter for the 12V sys.
The batteries (3) have been in the truck for over 4 years without any trouble. The system seems to always be charged and the plow works flawlessly without any low battery problems.
All my lights and strobes are 24V the only thing running on the 12V system is the plow, my CB and radio.
I will try to get some pix this weekend and TRY to post next week.
Good luck
Rick
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