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  #11  
Old 01-15-2020, 09:43 PM
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ol'George ol'George is offline
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What in the world pitted those gear teeth? Rust?

I'd surely replace the bearings, but given that we're dealing with a garden tractor not a land speed record vehicle, I'd use that ring/pinion set and not give it a 2nd thought.
It looks as though those teeth wore through the case harding rather
than rust.
I've seen it before over the years.
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  #12  
Old 02-12-2020, 06:16 PM
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Just curious, how you're making out?
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  #13  
Old 02-15-2020, 09:14 AM
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Straight cut gears whine.
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  #14  
Old 02-20-2020, 04:52 PM
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Haven't torn into this yet. Been busy with other stuff. I know it's never made this whining sound before, and I've driven this thing since I was 9 years old.
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  #15  
Old 02-20-2020, 05:23 PM
RAC65 RAC65 is offline
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Uhmmm, wouldn't the 70 have spec'd gear oil for the tranny and creeper???? The whine may not be anything but gear noise from straight cut gears. Running the lighter (much lighter) HyTran will make any gear or bearing noise worse, but not necessarily hurt anything.
Only solution may be to go to the correct oil or add a oil conditioner like something from Lucas to thicken it up.

(My Kubota M4500 spec's 80 wt for the tranny and hydraulics. Kubota now says use UDT/Super UDT which is essentially same as HyTran. Talk about noisy! But, doesn't seem to hurt it, never any filings in filter.)
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  #16  
Old 02-21-2020, 10:16 AM
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Uhmmm, wouldn't the 70 have spec'd gear oil for the tranny and creeper???? The whine may not be anything but gear noise from straight cut gears. Running the lighter (much lighter) HyTran will make any gear or bearing noise worse, but not necessarily hurt anything.
Only solution may be to go to the correct oil or add a oil conditioner like something from Lucas to thicken it up.

(My Kubota M4500 spec's 80 wt for the tranny and hydraulics. Kubota now says use UDT/Super UDT which is essentially same as HyTran. Talk about noisy! But, doesn't seem to hurt it, never any filings in filter.)
I refilled it with HyTran about 12 years ago and dutifully check the fluid levels. Mine calls for either 30 weight engine oil or HyTran. Maybe I'll change the fluid completely and look for any metal in the fluid before I tear into this thing.
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  #17  
Old 06-05-2020, 08:43 AM
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Well, I haven't changed the fluid yet, but did a little experiment with it. If I push it around in neutral, it does not whine. Does that help narrow it down? I thought maybe it would eliminate the ring and pinion gear since it would be moving.
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  #18  
Old 06-05-2020, 08:58 AM
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Well, I haven't changed the fluid yet, but did a little experiment with it. If I push it around in neutral, it does not whine. Does that help narrow it down? I thought maybe it would eliminate the ring and pinion gear since it would be moving.
how did you not turn the ring and pinion ? What you eliminated was gears in trans...
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  #19  
Old 06-05-2020, 08:58 AM
R Bedell R Bedell is offline
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Sounds like a bad bearing to me.
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  #20  
Old 06-05-2020, 09:03 AM
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The ring and pinion will react differently with actual torque from engine and trans than just pushing in neutral. You are not applying any load in neutral.

I agree. Sounds like a bearing
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