Noisy first and reverse gear

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westdogtown
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Noisy first and reverse gear

Postby westdogtown » Fri Jun 03, 2016 3:19 pm

I have a 1975 IH Cub which is very noisy in first or reverse gear. Gets louder when load is added. Oil levels look ok. Is this normal ?

tst
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Re: Noisy first and reverse gear

Postby tst » Fri Jun 03, 2016 4:51 pm

Welcome to the forum, No, it should not be loud but many are as they are all over 40 years old, possible worn out reverse idler gear bushing/shaft, bad bearings, they can make noise for years and work ok

Puffie40
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Re: Noisy first and reverse gear

Postby Puffie40 » Fri Jun 03, 2016 6:17 pm

Could you describe the noise?

Spur gears will make a deep whirring noise, and if that is quite loud, that might suggest bearings.

Gears or bearings with a irregularly of some sort tend to make a clicking noise.

Either way, if it concerns you, you can pop the shift cover off and look at the gears. Post a picture if you are unsure what you are looking at.

westdogtown
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Re: Noisy first and reverse gear

Postby westdogtown » Sat Jun 04, 2016 8:14 am

Thanks guys. It's good to be a member. Lots of information here. As I said, noise gets louder as load is increased. Does sound like a spur gear noise. No clicking just sort of a roar. It operates fine just noisy so I guess I won't worry about it.

Puffie40
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Re: Noisy first and reverse gear

Postby Puffie40 » Sat Jun 04, 2016 3:22 pm

The fact that it increases in intensity would be of some concern. Gear noise is caused by a slight misalignment of the gear, either from worn bushings, bearings or the gear teeth itself.

If you are using it for regular farmwork, I'd consider a transmission rebuild at least in the future. Otherwise I'd put some thicker oil in the tranny and call it good enough.

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pickerandsinger
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Re: Noisy first and reverse gear

Postby pickerandsinger » Sun Jun 05, 2016 4:13 am

RedLine makes a gear oil that will quiet the running gear down…I used it after reading about it on the forum…It worked for me in a 48….Havent used the tractor much as I'm still working on it so I can't attest to its longevity but it did quiet it down considerably when I first put it in…..My nephew used it in his drag car rearend with much success also….Unfortunately it is rather expensive, I think about 60-70 dollars a gallon if I remember correct (Which is about what I used in the transmission and finals if I recall correctly also)….I'm going to put it in another cub as soon as I change the clutch but that will be awhile yet …However if its just 1st and reverse you may want to delve into it more as Tim mentioned…...Dave
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CharlieK
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Re: Noisy first and reverse gear

Postby CharlieK » Sun Jun 05, 2016 6:44 am

use the "SHOCKPROOF' full synthetic Redline oil---it will quieten it down -- harleys use it often in their trannies -- it's pink in color and not cheap.... :hattip:


WHAT????????? another OIL thread....... :?:
get er done; life is good

westdogtown
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Re: Noisy first and reverse gear

Postby westdogtown » Sun Jun 05, 2016 1:55 pm

Thanks for the replies. I'll check into that Redline synthetic. I would sure like to keep from having to rebuild that transmission if I can.

tst
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Re: Noisy first and reverse gear

Postby tst » Sun Jun 05, 2016 5:02 pm

good oil will not fix bad parts

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Don McCombs
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Re: Noisy first and reverse gear

Postby Don McCombs » Sun Jun 05, 2016 5:29 pm

tst wrote:good oil will not fix bad parts

:thumbsup:
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Puffie40
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Re: Noisy first and reverse gear

Postby Puffie40 » Sun Jun 05, 2016 7:51 pm

tst wrote:good oil will not fix bad parts

I agree, however, if you are just in suburbia where the tractor does a little snowplowing and wagon running, you can baby it along for quite a long time.

Keep in mind though, does have the potential to have something give out and grenade the transmission; then you would really be singing the blues.


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