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Old 08-17-2015   #11
Dave_eng

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Smile Re: M4700DT PTO Shaft seems too Hot

Interesting find with the one cup being hotter.
Now you will start driving yourself nuts with the wealth of data you are going to accumulatehttp://www.orangetractortalks.com/forums/images/icons/icon7.gif
Remember with the heat gun, that the color and type of surface affect a property called emissivity so be certain all cups are clean to get true comparative numbers. If one cup had a smear of dark grease on it it would appear hotter to the gun.

Dave M7040
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Old 08-17-2015   #12
TK4700DT
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Default Re: M4700DT PTO Shaft seems too Hot

My thinking is that the one was setting in a position, before I came along to purchase, taking in more weather than the other.
I will replace both Front and rear.
Thanks for everyone's help!
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Old 08-18-2015   #13
TK4700DT
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Default Re: M4700DT PTO Shaft seems too Hot

I would never thought this could have been the problem... If I attached the pic hopefully you can see, the yoke bore is actually off center.
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Old 08-18-2015   #14
North Idaho Wolfman

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Default Re: M4700DT PTO Shaft seems too Hot

Looks to me like the yoke is bent on the other side?

Regardless of the issue, changing it should help!
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Old 08-18-2015   #15
Diydave
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Default Re: M4700DT PTO Shaft seems too Hot

Damage like that could come from shipping, handling, over torquing with a high HP tractor, or just bad QC, at the factory. Them IR thermometers sure is the bee's knees at finding all sorts of problems. Usedta cost around $300, saw an ad last week, for $19!
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Old 08-18-2015   #16
Bulldog
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Default Re: M4700DT PTO Shaft seems too Hot

Quote:
Originally Posted by TK4700DT View Post
I would never thought this could have been the problem... If I attached the pic hopefully you can see, the yoke bore is actually off center.
I just found one just like that on my batwing. I went to TSC and they didn't even come close to having one big enough so it was off to the driveline shop. After talking to those guys bent or twisted yokes are a very common issue. They said the yoke is one of the first weak links purposely made that way to help save the drive shaft. Like the man said, would you rather spend $50 for a yoke or $300 for a drive shaft.
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