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  #1  
Old 04-13-2015, 09:29 AM
SGragg SGragg is offline
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Default 782 Charging Question
My 782's charge indicator usually shows charging while running. After adjusting the PTO brake plate and clutch, now when running, the charge needle shows significant discharge.

Did similar after replacing my front oil seal a month ago. I had reinstalled the PTO, adjusted and ran tractor. It showed slight discharge while running, then after about a hour run time, needle started showing charge.

Doesn't sound right to me, but what are your thoughts?
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1980 IH 782, Kohler M18
IH #1 Cart, original
IH 42" Blade, modified to 50" and hydraulic
2015 XT2, Kawasaki 23 HP
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  #2  
Old 04-13-2015, 09:34 AM
J-Mech J-Mech is offline
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If the PTO is off, the problem should be unrelated. More than likely your v-reg lost it's ground connection. Put a DVOM on the battery and see if the alternator is charging.
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Old 04-14-2015, 09:12 AM
SGragg SGragg is offline
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Thanks for your comment.

I meant to say that while engine is running w/o PTO engaged, the needle is in center of the gauge. While PTO is engaged, the needle significantly moves and stays on the Discharge side; about one notch. When PTO is shut off, needle moves back to center position. Nothing was changed other than adjusting the clearances of the PTO clutch.

Where do I place the DVOM leads to check? Positive battery post and...where?

Thanks.
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1980 IH 782, Kohler M18
IH #1 Cart, original
IH 42" Blade, modified to 50" and hydraulic
2015 XT2, Kawasaki 23 HP
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Old 04-14-2015, 09:18 AM
R Bedell R Bedell is offline
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Click on this link and perform the test(s). Report back on what you find.... Charging Test
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Old 04-21-2015, 08:07 AM
SGragg SGragg is offline
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Engine off, battery at 12.56 DCV.

Operational test at 3 prong lead with engine WOT:
42 ACV from stator leads
12.5 DCV from center lead to ground

My conclusion: rectifier/regulator needs to be replaced.
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1980 IH 782, Kohler M18
IH #1 Cart, original
IH 42" Blade, modified to 50" and hydraulic
2015 XT2, Kawasaki 23 HP
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  #6  
Old 04-21-2015, 08:14 AM
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Sam Mac Sam Mac is offline
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Quote:
Originally Posted by SGragg View Post
Engine off, battery at 12.56 DCV.

Operational test at 3 prong lead with engine WOT:
42 ACV from stator leads
12.5 DCV from center lead to ground

My conclusion: rectifier/regulator needs to be replaced.
42 volts AC sounds high to me. Think it should be around 30
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Old 04-21-2015, 09:22 AM
J-Mech J-Mech is offline
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Quote:
Originally Posted by Sam Mac View Post
42 volts AC sounds high to me. Think it should be around 30
That's correct.
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