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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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1800 transmission again

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Jeff Oliver

02-06-2005 20:41:22




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I got the top off tonight and have saw where the shift fork that controls the high and low has been broken and welded. The gear will slide up and touch the gear towards the front of the tractor ( High range) but has enough slack in it to slip forward enough to get it kick out of low on the center shift rail. The rail itself has some slack in it that will cause this but I think I bent the fork where it was welded. Gonna drain it tomorrow and try to heat the fork and bend it until it will work right

I also noticed that there is a freeze plug missing at the end of the middle shaft. Is that all that goes in there or does it happen to have a spring or something to hold tension on the shaft when shift down o like 1-2 or 4th gear range?

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Butcher

02-07-2005 08:13:23




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 Re: 1800 transmission again in reply to Jeff Oliver, 02-06-2005 20:41:22  
I may be way off here but, If I understand you correctly the freeze plug that the shaft fits in should contain a spring and what the book calls a poppit ball. That ball fits into a detent on the shaft. There should be one on each end.



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J. Schwiebert

02-07-2005 08:29:01




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 Re: 1800 transmission again in reply to Butcher, 02-07-2005 08:13:23  
If I understand you correctly, the freeze plug is located at the end of the shift rail in the transmission case. If this is correct, there is no spring or ball behind that plug. The purpose of the plug is to keep dirt out of the transmission and oil from leaking out. The spring and detent ball have to push at a right anle to the rail and it is the same ball and spring in both ranges. Will your shift collar go all the way to engage the range gear on the other end? Also does it have any over travel on that end. What series 1800 are you talking about and if an A or B Series has it been converted to a pressure lubricated top shaft?

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Jeff Oliver

02-07-2005 14:46:10




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 Re: 1800 transmission again in reply to J. Schwiebert, 02-07-2005 08:29:01  
The shift fork will move the gear to engage at both ends. but there is enough play in the shaft to let it come just enough off of the low side to grind a little. I found out last night that it has been welded back together and might try heating it and bending it back some as it engages towards the front all the way up to the next gear shoulder.I am thinking I can bend it back some and keep it engaged in the rear.

Those detent balls I will assume are in the back towards the hydraulics as there are 3 notches in the shift rails there. Gonna check all of that tonight as well. AS I posted earlier I know it works cause I drove it the day before I bought it and it shifted and stayed in gear fine. Hah leave it to me to mess something up.:)

How much play should that middle shaft have when engages? I seems to move about 1/8-3/16 if n inch when back in low. Would it hurt to put a small spring behind the freeze plug even if you have to ad a strap on the outside of it ? This is gonna be a using tractor not a show piece. Not hard use just a third tractor for hay. I am doing all I can to NOT take the hydraulics off of this thing..... ..

Thanks for all the info and i'll post more tonight when I find out more

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J. Schwiebert

02-07-2005 15:57:00




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 Re: 1800 transmission again in reply to Jeff Oliver, 02-07-2005 14:46:10  
Jeff: Let me make SURE we are talking about the same parts here. There are shift RAILS and imput shafts. What are you calling a shaft? Also on the 550 diesel, what does your dad call the shut off valve? Do you have a breakdown of a PSB Bosch pump? How about one of the 1800 transmission area. If you need them I have them but can not scan, need to snail mail. Also one more time does your 1800 transmission have a field added oil pump? How about going to the HPOCA web site and finding me and sending me a normal e-mail address and a phone number. Somehow I have a feeling we will not solve this tongight and then I am gone until Wednesday evening. Questions?

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Jeff Oliver

02-07-2005 16:45:42




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 Re: 1800 transmission again in reply to J. Schwiebert, 02-07-2005 15:57:00  
I just got back from the shed and I think I have the problem fixed.It looked like when they weleded the shift fork back they didn't get it exactly right. I good torch and a pry bar wil do wonders. I eased it back until with all of the slack out it is still on the gears in both the high and low position so I think I have ha covered. I didn't see any oil pump either under the shift lever( the only place I have off right now) or anywhere else in the tractor. Is it under the hydraulics?

I am fixing to go back up and clean where I have been working really good and probably drain the fluid and replace as it has some slag from the welding job in it. Will ge a plug for he end tomorrow and that part should be done.

All we have on the 550 pump is what is in an I&T manual. I am no sure what exactly he is calling the shut-off valve but I think it is where the throttle linkage goes but don't quote me on that. I will be severeal days before we can get it in the shed so there is no hurry for it yet.

I will get on HPOCA and send you my phone number, my email is open on this post.

I really appreciate all your info, Hopefully I can get my manuals and things in soon and will be able to use them also.

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Jeff Oliver

02-07-2005 14:55:09




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 Meant to add in reply to Jeff Oliver, 02-07-2005 14:46:10  
Sorry I meanto tadd that it is a B series. BTW does anyone know what guage went in the center hole of the dash? I have the fuel and temp and i am guessing it was the oil but an not sure.



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Butcher

02-07-2005 09:41:03




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 Re: 1800 transmission again in reply to J. Schwiebert, 02-07-2005 08:29:01  
You are correct. I missread my book. Didnt mean to give any bad advice.



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