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Farmall & IHC Tractors Discussion Forum
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H tranny noise????

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jonnnny2006

05-24-2007 17:58:49




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I have a 43 H she is my very first tractor... Any ways when i drive it in high gear she is kinda noisy compared to my 53 stage2 super H and is noisy compaerd to my 44 H. I have replaced the tranny oil with new 85-90 weight it still seams noisy. all the gears hold fine. i'm just wondering if it has somthing to do with i.h. changing somthing? I know they started using heat induction hardened gears at some point in time, could this be the reason for a noisy rear end? Come to think of it my dads 39 was just as noisy in 5th gear. Is this normal or is there a reason? i filled the rear end with 6 gallons gear lube. jonnnny2006

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Bob Kerr

05-25-2007 06:18:14




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 Re: H tranny noise???? in reply to jonnnny2006, 05-24-2007 17:58:49  
I have a 51 H I bought a couple months ago at an auction and didn't get to see it run of move. When I got it home I noticed it was super noisy so I checked the rear end grease...full of water! and very little gear oil in it since the water displaced the gear oil and it leaked out through the left rear axel seal. There was no signs of the leak since someone painted it up all pretty. I drained it out and out came some peices of ball bearing retainer (the wavy strip that holds the balls in). I am sure there are other worn out bearings in there. Also all these old tractors use straight cut gears in the rear ends. they are the most effecient and create little or no side thrust under load. straight cut gears have one drawback and that it they are noisy compared to helitical cut gears used in cars. If you have ever driven an older car with a stick shift tranny you may have noticed reverse makes a whining noise compared with the forward gears. Reverse has straight cut gears and the forward has helitical cut gears. Nascar uses all straight cut gears in the Jericho trannys they use and you can hear the tranny whine when they go slower like under yellow. The weight of gear oil will not usually quiet a gear set that has slop from bad bearings or worn teeth. I would check it out as I hear if a bearing ball gets loose from a cage it can get inbetween the bull gear and housing and break a hole in the bottom of the rear end and is a real pain to fix.

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CNKS

05-24-2007 18:19:46




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 Re: H tranny noise???? in reply to jonnnny2006, 05-24-2007 17:58:49  
I don't think the transmissions differ greatly, not saying everything is identical (Your SH does have different gearing). My Super H and M sound about like I remember my dad's H sounding back in the 50's. I also have a 41 H I have done nothing to, it needs about everything and is the noisest of the 3 that I have, in ALL gears. Will cost a fortune to fix. But, noise is directly related to wear. All 3 of your tractors differ in the way they were used and in the number of hours.

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