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Gear noise and oil type


 
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blue924.9
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Joined: 18 Sep 2013
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PostPosted: Fri Mar 27, 2020 5:36 pm    Post subject: Gear noise and oil type Reply to specific post Reply with quote

Hello all. I rebuilt my allis wd 2 or 3 years ago. Mild build for a stock class puller and also fixed a noisy second gear. Used a shaft from a wd power unit by grandpa had that was never really used due to being a power unit and gears were like new. After mixing the two shafts I have had a horrible gear noise, loud enough to hear over the straight pipe. It was filled with 80w90 and I see alot of people using hy translation.

Im wondering if the lighter oil will lighten up some of the noise and also if the gears will break in and get quiet er. The only quiet gear is road gear which is straight through aka direct drive. Thanks
 
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Denny K
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PostPosted: Fri Mar 27, 2020 6:14 pm    Post subject: Re: Gear noise and oil type Reply to specific post Reply with quote

I learned in power mechanics class in school that gears like ring gears and pinions are hardened
to 2 different Rockwell hardnesses to prevent gear noise. We used to use Pete Jackson gear
drives in place of timing chains on big block chevys and you could hear the whine over the race
engine on the track. I don't know if transmission gears are all the same hardness or not.
 
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rustred
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PostPosted: Sat Mar 28, 2020 1:59 pm    Post subject: Re: Gear noise and oil type Reply to specific post Reply with quote

you have other issues going on there. any gears you hear whining are not a matched set. they sure don't whine from factory. if trying to hide it with thick oil your just masking the problem.
 
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