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Reload this Page Is there a senior member expert on 782D's out there ???
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  #1  
Old 11-02-2010, 09:37 PM
cgent cgent is offline
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Join Date: Oct 2010
Location: Indiana
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Default Is there a senior member expert on 782D's out there ???
I've had the 782D pictured in the thread just before this one for about 20 years.

I'm pretty experienced in it ... have serviced and repaired everything for all 20 years. Belts, pulleys, fuel lines, drive shaft, tires, mower decks, cooling fan, you name it. Throttle has always been a problem ... fixed it again just now. Just replaced both valves in the hydrostatic transaxle.

The tractor has quit charging. 14.4 volts AC measured coming off the alternator. What do I check next ??? How do I check the operation of the regulator/ rectifier ???
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  #2  
Old 11-02-2010, 10:20 PM
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Matt G. Matt G. is offline
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If you are only getting 14.4V AC out of the alternator, I'd say the alternator is toast, because the DC output from the regulator will be half that.
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  #3  
Old 11-03-2010, 06:48 PM
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aagitch aagitch is offline
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Did you check the voltage off the two alt wires at full rpm? It should be at least 20 ac. My problem ended up being the regulator. If you want I'll let you know where I got mine brand new and paid WAY less than alot of places.
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Old 11-03-2010, 07:45 PM
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It should be more than 20...you should have probably 28VAC across the two alternator wires. 20V would mean 10V to the battery, and that wouldn't charge the battery.
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Old 11-03-2010, 09:34 PM
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aagitch aagitch is offline
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I'm just going by what the diesel manaul says but you're right as mine puts out about 28vac.
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  #6  
Old 11-03-2010, 11:30 PM
cgent cgent is offline
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I mis led you ... my fault. Voltage from alternator at idle is 14.5 volts AC ... voltage at mowing speed .... full throttle ... is 30 volts AC ...

Now I suspect the rectifier / regulator ... how do I prove it "toast" ... and can I find a replacement for less money ... looks like nearly $150 !!!

... anybody have a used "parted out" unit for this machine ???
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Old 11-04-2010, 06:03 PM
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aagitch aagitch is offline
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Cgent I just sent you a message.
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Old 11-04-2010, 09:12 PM
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Iluvtruks0 Iluvtruks0 is offline
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I too have sent you a message cgent
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David in NC
Wanted to buy Category 0 attachments and 2000 rpm implements
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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