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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Taking hyd. pump off 880

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jtw

02-27-2005 11:02:02




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I am taking the hyd pump/ transmission top off my 880 and replacing it with the flat transmission top off of my 77. (to lighten up for puller) Ive got the top off the 77 by taking out the bolts around the bottom of it theres 10 or 11 I think. I took the same bolts out of the top on the 880 and I cant get it to move, it acts like something else is still holding it. My question is what else do I need to take off or unbolt to get the top and hyd pump off the 880?

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tom upton

02-27-2005 18:31:54




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 11:02:02  
for sure the pto shaft has to come out, but it sounds like you have not pulled the two dowel pins up? They are in oppisite corners of the base,and in between the bolts you have allready taken out. They have a larger diameter on the top side so you can get a screw driver or pry bar under them and force up. If you do not have a use for your hyd. unit you might be better to remove pump and resivoir/valves off of existing unit and just cap it off with a pc. of aluminum plate? That way you can leave your 77 intact? I am assuming you are not going to be retaining your pto shaft? If you do above will not work as pump is what supports it v/s your 77 which should have a pto support bracket with a bronze bushing in it.(which you allready know as you have cover off) If you pull shift lever off be carefull not to lose centering springs down inside transmission.Personaly I take unit off with shift lever intact just to avoid this.For all the time it takes I unbolt the seat , it makes it much easier to work at. By the way How light a class do you intend to pull your 880 in? Is it gas or diesel?

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jtw

02-27-2005 18:37:43




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 Re: Taking hyd. pump off 880 in reply to tom upton, 02-27-2005 18:31:54  
I need the hyd pump for the 77. But I will pull the pto while im into it. My 880 weighs about 4600 with me on it right now. Im putting pressed wheels on the front and taking the pto out and changing the transmission top of course. What do you think all this should get me down to? Its a gas



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tom upton

02-27-2005 19:04:21




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 18:37:43  
If you are at 4600 now I guess you have presed steel on back now? I am not sure what you will lose for weight exactly. I would guess hyd. pump at close to 100 pounds. loseing those front hubs I would guess another 150? So my guess is youwill be around 4350 .This would be good if your shooting for 4500 class? We have a 66 narrow front on our 880 which bolts right on. It is probably 75 or more lighter than 880 front? Might be an option for you if you are still too heavy for your class?

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J. Schwiebert

02-27-2005 17:54:37




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 11:02:02  
When you removed the cover from the 77 did you see a bracket held on with one bolt and a dowel pin that supported the PYO shaft/ If you are goingto use the PTO on the 880 put that bracket in, now if you have an 880 with the helical gears I am trying to remember if those two holes are in there but I think they are.



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Kent of SW MO

02-27-2005 14:32:33




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 11:02:02  
If it is like an 88 you need to remove the PTO unit. The same shaft that powers the PTO powers the hyda pump.

Kent



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Jeff Oliver

02-27-2005 15:15:54




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 Re: Taking hyd. pump off 880 in reply to Kent of SW MO, 02-27-2005 14:32:33  
yep the PO has to come out or at least back. Seems like someone told me about some shims or spcers or something that have to be put in with the flattop also but I can' remember for sure.



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jtw

02-27-2005 18:31:05




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 Re: Taking hyd. pump off 880 in reply to Jeff Oliver, 02-27-2005 15:15:54  
There was no rod going down into the transmission on the 77. The only thing in there was the shifting rod going down to the gears. I need to know what I have to do to get the hyd. unit off the 880? Can I just pull the pto out after i get the transmission tops changed? I dont mind pulling the pto, that should loose some more weight for me so that will help. just let me know what i need to disconnect, etc.? thanks

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Jeff Oliver

03-01-2005 14:46:44




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 18:31:05  
The PTO shaft has to come out first as it is what runs the pump. The shaft runs through like a collar that turns the pump so it will have ot come out before he unit will lift up.



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Kent of SW MO

02-28-2005 07:38:31




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 Re: Taking hyd. pump off 880 in reply to jtw, 02-27-2005 18:31:05  
The PTO has to come off first!!! then pull the hyda pump.

Kent



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