Input shaft maybe a poor design withdrive shaft and flywheel

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dennislbrooks
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Tractors Owned: CC 100, CL 185, CC EX2900

Input shaft maybe a poor design withdrive shaft and flywheel

Postby dennislbrooks » Sun Jun 02, 2024 6:41 am

My 185 probably has mowed many miles of grass but the old girl C60 runs pretty good still. Yea, it could use about 5 more HP. It has newer 60-inch woods mower and I have the smaller diameter stock 57 Cub lug tires on it. I switched wheels/tires with my 57 cub. I am replacing drive line parts that probably originated from a wearing of the pilot bushing. It seems that the weight of the driveshaft in that length would have down pressure on the bearing unlike a muncie in a chevy. When the pilot bearing wears it creates a hammering effect on the flywheel that wears the input shaft hole clockwise. I see no wear on the flywheel holes.

Old pilot bearing.jpg


I wonder why IH did not put a support bearing before the clutch fork on the driveshaft to hold the weight.

I have the following parts ordered from HamiltonBob's:

Clutch fork and pins
Throw out bearing
Pilot bushing

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SONNY
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Re: Input shaft maybe a poor design withdrive shaft and flywheel

Postby SONNY » Sun Jun 02, 2024 12:20 pm

Never had one go out on any of mine! I just took all of the stuff out of the 154 that I junked and its fine too.

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dennislbrooks
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Tractors Owned: CC 100, CL 185, CC EX2900

Re: Input shaft maybe a poor design with drive shaft and flywheel

Postby dennislbrooks » Sun Jun 02, 2024 4:51 pm

I do not want to miss a thing. 8-)
Attachments
Old throw out bearing.jpg
Old clutch fork.jpg

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Urbish
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Re: Input shaft maybe a poor design withdrive shaft and flywheel

Postby Urbish » Mon Jun 03, 2024 7:09 am

Make sure you soak that throw out bearing in the cheapest crap grease you can find and keep 'er well-lubed. Modern high quality grease won't wick into the graphite properly.

To answer your question, adding a mid-support bearing would tend to accelerate the wear of the pilot bushing. Shafts like to be supported rigidly at two points. Adding a 3rd point of support would require that all three bearings be perfectly axially aligned. The only time the shaft spins in the pilot bushing is when the clutch is pushed in. Given that these are low power, low rpm machines, the system as designed should be up to the task. I wonder if over its lifetime your 185 spent a lot of time running with the clutch pushed in. If I'm going to be sitting for more than a few seconds with the engine running, I throw the tractor into neutral as to not put further wear and tear on the TOB and the bushing.
Jim

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dennislbrooks
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Joined: Sun Sep 16, 2007 2:53 pm
Zip Code: 45176
Tractors Owned: CC 100, CL 185, CC EX2900

Re: Input shaft maybe a poor design withdrive shaft and flywheel

Postby dennislbrooks » Fri Jun 07, 2024 11:14 am

I do have to clutch often. I have a video of it running but I do not know to post it - maybe.


https://www.facebook.com/10000819747080 ... &ref=notif
Attachments
Driveshaft1.jpg
Driveshaft2.jpg
Driveshaft2.jpg (38.32 KiB) Viewed 127 times

outdoors4evr
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Re: Input shaft maybe a poor design withdrive shaft and flywheel

Postby outdoors4evr » Mon Jun 10, 2024 7:58 am

Oh WOW that TOB has a LOT of wear! Better replace it and the carrier.
As for the fork, weld up the grooves and grind them back to rectangle shape. That extra slop will kill the TOB.
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller
IH-54 Blade


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