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Noisy Transmission gears 1949 Cub
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Noisy Transmission gears 1949 Cub
I recently rebuilt a 1949 Farmall Cub. I rebuilt the engine but did not do anything to the transmission except change the fluid.
Could someone watch and listen to this youTube video and let me know if it is supposed to make this much noise?
http://www.youtube.com/watch?v=EgYsy881tMQ
Thanks very much.
Could someone watch and listen to this youTube video and let me know if it is supposed to make this much noise?
http://www.youtube.com/watch?v=EgYsy881tMQ
Thanks very much.
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Re: Noisy Transmission gears 1949 Cub
Nice looking tractor. That sounds more like a bearing or something in a final drive to me but you are a lot closer to tell where the sound is coming from. Is the sound near the wheels, or below you?
Todd
Todd
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Re: Noisy Transmission gears 1949 Cub
Nope, not normal and I didn't even have my hearing aids in.
Normal noise is more of a constant whine or growl.
Normal noise is more of a constant whine or growl.
I have an excuse. CRS.
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Re: Noisy Transmission gears 1949 Cub
Charlie, Double check to make sure your brakes aren't adjusted too tight. They'll make a loud chatter similar to the noise I here in your video.
Welcome to the site.
Rick
Welcome to the site.
Rick
When I told my dad I've been misplacing things and doing stupid stuff----His reply---"It only gets better"
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Re: Noisy Transmission gears 1949 Cub
That seems a little more than usual. You can expect some noise since they are straight cut gears, however, I have been successful in quieting down transmissions with bearing replacement and the first/reverse slider gear and bushing. With one of my tractors, I replaced all bearings and gears from an older model cub cadet. Now it too, is quiet. Looks and sounds like you did a great job on the engine. With that ability, you can refurbish the transmission easily. There are a lot of folks here to help, manuals and pictures are available as well. Welcome, and continued success with your '49.
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Re: Noisy Transmission gears 1949 Cub
Thanks everyone for your input and suggestions. It's hard to tell exactly where the noise is coming from...some of it is definitely coming from the transmission...but some could also be coming from the lower gears as well. Looks like I have some work ahead of me...i'll check out your ideas. I don't have the time right now to invest a lot of effort right now.
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Re: Noisy Transmission gears 1949 Cub
My tranny growls while in netural but i think i hear the final drive more than my tranny when i drive it. But 1st gear is noisy and 2nd gear is quiet. I think your final drives maybe low on oil or a bearing maybe bad. "maybe" But Rick maybe right but it maybe a brakeless band because it sounds like steel on the castiron drum.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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Re: Noisy Transmission gears 1949 Cub
You could jack up the rear end enough to get the rear wheels off the ground (wedge the front axles) and spin em one at a time. You should be able to narrow it down that way. I am guessing a bearing in one of the finals or possibly the diff shaft. That noise should have some roughness with it, so if a bearing you should be able to feel it too.
The input shaft bearings on the tanny will be noisy in N with the Cub running.
The input shaft bearings on the tanny will be noisy in N with the Cub running.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
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Re: Noisy Transmission gears 1949 Cub
Good idea. I'll jack up the rear end and spin them one at a time and can hopefully narrow down the source.
One thing I didn't mention earlier but I'm wondering now if it may be a possible root cause of the noise. I had the rear of the tractor sand blasted prior to painting. We taped up every known entry point with extra heavy and many layers of duct tape. It will be interesting to see if sand got inside somewhere and is the source of grinding. i don't have a reference point for the condition prior to the rebuild...the tractor was in a barn and not running when I got it.
One thing I didn't mention earlier but I'm wondering now if it may be a possible root cause of the noise. I had the rear of the tractor sand blasted prior to painting. We taped up every known entry point with extra heavy and many layers of duct tape. It will be interesting to see if sand got inside somewhere and is the source of grinding. i don't have a reference point for the condition prior to the rebuild...the tractor was in a barn and not running when I got it.
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Re: Noisy Transmission gears 1949 Cub
Careful with jacking the rear end, the front pivots so the back will want to have one side on the ground (left?).
I am leery of sandblasting anything but pieces. But it may be something as simple as sand on the brake shoes?? (there is a drain hole under the brakes)
A mechanics stethescope or screwdriver to the ear may be helpful.
Let us know what you find.
I am leery of sandblasting anything but pieces. But it may be something as simple as sand on the brake shoes?? (there is a drain hole under the brakes)
A mechanics stethescope or screwdriver to the ear may be helpful.
Let us know what you find.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
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Re: Noisy Transmission gears 1949 Cub
I was able to work on the cub over the Thanksgiving holiday. I jacked up the rear end and narrowed the noise down to the transmission. When the transmission wasn't turning the rear wheels were very quiet. Anytime the transmission was turning the noise returned. When I opened up the top cover of the transmission and observed the movement...I noticed that one of the shafts had a lot of play. Looks like I'm going to need to re-build the transmission one of these days. Thanks again for you suggestions and help.
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Re: Noisy Transmission gears 1949 Cub
top shaft bearings are bad, and probably the shaft itself - either the rear bearing surface or its bent.
while i had it in pieces, a Cub Cadet original transmission as an organ doner is very helpful for gears, countershaft, ring and pinion.
the Cub Cadet transmissions have a gear reduction in front of the transmission thats 7 to one - engine turns 3600 RPMs would yield a top shaft turning about 515 RPMs. vs. a cub top shaft turning at engine speed - 1800. add to that the typical use of each tractor, the Cub working 12-14 hours daily cultivating, lets say, and the Cub Cadet mowing the lawn for an hour a week, and more probably stored inside. thats why you want one of those transmissions.
while i had it in pieces, a Cub Cadet original transmission as an organ doner is very helpful for gears, countershaft, ring and pinion.
the Cub Cadet transmissions have a gear reduction in front of the transmission thats 7 to one - engine turns 3600 RPMs would yield a top shaft turning about 515 RPMs. vs. a cub top shaft turning at engine speed - 1800. add to that the typical use of each tractor, the Cub working 12-14 hours daily cultivating, lets say, and the Cub Cadet mowing the lawn for an hour a week, and more probably stored inside. thats why you want one of those transmissions.
'If they're tappin', they're not burnin'
http://www.ZagrayFarmMuseum.org
http://www.ZagrayFarmMuseum.org
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- Tractors Owned: Restored: 1950 Cub, 1950 Cub Demo, 1948 super AI, 1935 Silver King, 1946 Oliver 60 RC, John Deere M, 1950 C demo.
In working clothes:
1950 cub, 1948 cub, 1941 A, 1948 H, 1963 B414, 1958 240U, 1947 Oliver 60 industrial, Oliver 70 industrial. IH 450, 1963, another 1948 cub, 1946 I6 with Trogan front blade. - Location: CT, Middletown
Re: Noisy Transmission gears 1949 Cub
to clarify the Cub Cadet transmissions further, any gear drive cast iron Cub Cadet transmission will function as a doner. original, 70's 100's 120's, 140's. some of the 70's and 10X's had a wet brake system that used an extended countershaft. that shaft can be shortened, or a suitable grease retainer fashioned as i don't believe it will interfere with the torque tube.
'If they're tappin', they're not burnin'
http://www.ZagrayFarmMuseum.org
http://www.ZagrayFarmMuseum.org
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Re: Noisy Transmission gears 1949 Cub
If you also get a distinct burning smell while riding, it very well maybe your brakes tightened a bit too much.
Good luck with your cub and welcome!
Good luck with your cub and welcome!
"A nation which does not remember what it was yesterday does not know where it is today." --Robert E. Lee
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