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-   -   Alternator upgrade? (https://www.onlycubcadets.net/forum/showthread.php?t=58853)

hugo454 06-09-2021 07:23 AM

Alternator upgrade?
 
Anyone ever upgrade the stock alternator on a 1782?

ol'George 06-09-2021 07:40 AM

Nope but what is the reason you want higher output?:Unknown:
Is yours not working?

hugo454 06-09-2021 02:03 PM

the charging system is a mess on this 1782. I got it running and have a new hi-torque starter to install because it cranked real slow even with new 600cca battery.Figured I would see about charging upgrade before I even begin to mess around with what's there.

hugo454 06-09-2021 02:05 PM

1 Attachment(s)
a mess
Attachment 108511

R Bedell 06-09-2021 02:17 PM

Upgrading the Alternator won't straighten that wiring mess out.

:bigthink:

hugo454 06-09-2021 03:51 PM

I know that and have the schematic you gave me to help me along.
I thought my question was a simple one,"are there any alternator upgrades that are available"
I've seen that owners have done away with much of this electrical spaghetti. I already have the hi-torque starter to install, I will install Sunpro gauges to monitor temp,oil,volts. Figured others had modded the charging system, that's all.

R Bedell 06-09-2021 04:18 PM

The 1782 used the KB-15531-64017 alternator. It was rated for 12 Volts at 14 Amps.

Upgrading the Alternator to a higher amperage means, you will need to upgrade the V/R and the wiring to match the higher amperage.

hugo454 06-09-2021 04:31 PM

14 amps will be fine, that's what I'll use if mine is n.g.
thanks...

Sam Mac 06-09-2021 05:23 PM

The OEM dynamo is adequate unless you're adding additional load.

Billy-O 06-09-2021 07:06 PM

I think........You have other problems than really needing the upgrade. The upgrade probably won't perform desirably since you still have those other problems that interfere with the proper operation with the original. Once the other problems have been remedied, then the need for upgrade will be come undesirable.

hugo454 06-09-2021 08:01 PM

I agree completely.

V30crewcab 06-09-2021 09:59 PM

I put a small one wire alt on mine, but had to add a relay to turn it off because it was draining the battery overnight. It works great now.
https://www.rareelectrical.com/i-268...-richmond.html

FrankF3 06-10-2021 12:13 AM

Wow! Is the alternator you have charging at all? I had a couple of problems with the Cub charging systems on my 1572 and 1772. On the 1572, the regulator came apart internally. A seam opened up on the edges where the potted electronics met the heat sink and stopped charging. When I unbolted the regulator and pressed on the epoxy covering the electronics, it would resume charging. On the 1772, it stopped charging and I traced this one to corroded and burned crimps in the connector where the voltage regulator plugs into the tractor wiring harness. I replaced the connector housing and all the crimps and adding some connector anti-oxidant, and all is fine for 2 -3 years now.

hugo454 06-10-2021 03:09 AM

I haven't really tackled the electrical yet, just doing my homework and seeing what others have done or experienced. I got it running, did oil change, and radiator flush. I will tackle the electrical as soon as there is a break in this heat. I have to tackle a newly discovered fuel leak after filling tank with fresh diesel and a shot of Diesel Kleen.


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