1973 450B pto

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Riley99
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Location: macon ga

1973 450B pto

Post by Riley99 » Thu Feb 25, 2021 5:06 pm

Hey guys, i was running my 450b today for about 3 hours. After i finished, i went and checked the pto shaft because i put a new seal in it. And boy it was hot. I mean hot hot, couldn't touch it hot. This cant be normal can it?

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LeonardL
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Re: 1973 450B pto

Post by LeonardL » Thu Feb 25, 2021 6:14 pm

No dude that aint normal. I suspect you have a bearing going bad or your shaft is biding up. I wouldn't run the pto until you can figure out what's going on.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.

Riley99
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Joined: Wed Jan 13, 2021 4:00 am
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Re: 1973 450B pto

Post by Riley99 » Thu Feb 25, 2021 6:27 pm

Thats what i was thinking, problem is, i cant turn it off.
If i can figure out how to disengage it, i will. Hopefully i dont have to pull the front cover off.

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LeonardL
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Re: 1973 450B pto

Post by LeonardL » Fri Feb 26, 2021 9:00 am

Well... it will mean you'll have to drain the transmission oil but you can pull the shaft from the rear of the machine. I would suspect it will be the bearing there at the rear of the PTO shaft that is bad anyway. Those bearings can be an issue. I have also ran into where the shaft will get bent slightly and cause the bearings to go bad. Usually with that condition you will have a bad vibration as well.
40 plus years working on JD 350s, 400Gs, 450s and other equipment both Ag and Construction.

Riley99
40C crawler
40C crawler
Posts: 13
Joined: Wed Jan 13, 2021 4:00 am
Location: macon ga

Re: 1973 450B pto

Post by Riley99 » Fri Feb 26, 2021 10:02 am

Can i change that rear bearing from the rear of the machine? Ill take a look at it this evening.

Can i pull the shaft out and leave it out. Maybe weld up the housing?

B Town
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Re: 1973 450B pto

Post by B Town » Fri Feb 26, 2021 10:13 am

Back the rear of the tracks onto a RR tie or equivalent. This will help shift your oil forward away from the three bolt plate that holds the shaft/bearing. I sourced a bear plate with no shaft provisions from a breaker. This way I can pull the shaft with cover and replace the opening in the rear of the case with the proper plate.
Good luck, Bruce

Riley99
40C crawler
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Posts: 13
Joined: Wed Jan 13, 2021 4:00 am
Location: macon ga

Re: 1973 450B pto

Post by Riley99 » Fri Feb 26, 2021 10:17 am

Perfect, thats the ticket.thanks

Riley99
40C crawler
40C crawler
Posts: 13
Joined: Wed Jan 13, 2021 4:00 am
Location: macon ga

Re: 1973 450B pto

Post by Riley99 » Fri Feb 26, 2021 11:18 am

Would the part, T122779 be the correct cover?

B Town
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Re: 1973 450B pto

Post by B Town » Fri Feb 26, 2021 2:28 pm

Riley99 wrote:
Fri Feb 26, 2021 11:18 am
Would the part, T122779 be the correct cover?

I believe that part # is for the front of the transmission, ie front input and counter balance shafts.

I’m thinking T15070. Not for certain, please check into it.

Jim B
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Re: 1973 450B pto

Post by Jim B » Fri Feb 26, 2021 2:36 pm

I agree with B Town. Item Key # 12 in this drawing.
https://partscatalog.deere.com/jdrc/sid ... gId/171637

Riley99
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Joined: Wed Jan 13, 2021 4:00 am
Location: macon ga

Re: 1973 450B pto

Post by Riley99 » Sat Feb 27, 2021 7:05 am

Thanks guys.

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