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Massey Harris & Massey Ferguson Tractors Discussion Forum
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TE20 Hydraulics

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Iain Gibson

03-10-2007 19:24:34




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Hi People.

I have a TEA20. I would like to know if there it is possible to put a piston on the main lift cylinder that has O rings on it rather then normal split rings and hence have a cylinder that doesnt leak.

Secondly, I would like to know what the expected flow rate is out of the hydraulic pump as I would like to run external hydraulics for a 3PL mounted forklift mast.

Do te20's seem to still put out reasonable pressure without a rebuild? Can I expect 2000 PSI?

Any comments are greatly appreciated.

secondly... is there any lubriucation points on the large pin on which the whole front axle assembly pivots on? Or does it just run dry?

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Jerry/MT

03-11-2007 21:49:19




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 Re: TE20 Hydraulics in reply to Iain Gibson, 03-10-2007 19:24:34  
Sparex only has the split rings in their catalog but I am certain i have seen or heard of O ring sealed pistons. Look on the left of this page and check with the parts folks who sponsor this site. I don't have the exact numbers but the flow from the pump is around 2.2-2.5 gpm max. I don't know if a worn pump can put out 2000 psi. It depends on the wear. I think the relief is set 2050 psi.
There is no lube point for the front axle pivot pin. Mine squeaks and if I ever replace it I will put as much graphite as I can possibly fit on it!

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Iain

03-12-2007 00:05:52




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 Re: TE20 Hydraulics in reply to Jerry/MT, 03-11-2007 21:49:19  
At wht RPM do you expect to get this flow rate?

I want to know what sort of rate of cylinder extend I will get out of a 3PL mounted forklift mast I am making. I can of course rev it up to lift. A quick calc told me that this would be rediculouly slow with the flow rate you mentioned on a 50mm cylinder (ID)

How do people go with their front mounted buckets? Or do they run a pump off the PTO for that externally?

Thanks, Iain.

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Jerry/MT

03-12-2007 11:23:35




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 Re: TE20 Hydraulics in reply to Iain, 03-12-2007 00:05:52  
The Continentl's max rpm is 2100 so I believe that what it's rated at. That's 756 rpm at the pump. Don't know what the Standard engine is rated at.
Now you know why most people who put a loader on use a crankshaft driven pump. You could use a PTO driven pump I suppose but to get a given flow you'd have to have a larger pump because of the speed reduction of the PTO (Ncs/Npto=2.77:1), just like the existing hydraulic pump.

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Iain

03-12-2007 12:11:53




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 Re: TE20 Hydraulics in reply to Jerry/MT, 03-12-2007 11:23:35  
Where and how is a pump crankshaft driven?

Does the hand start out the front not have an over run clutch and just have a suitable shape so that it disengages the handle when it runs faster? (I dont have and have never seen a handle )



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Jerry/MT

03-12-2007 20:19:52




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 Re: TE20 Hydraulics in reply to Iain, 03-12-2007 12:11:53  
There is an adapter that bolts to a special crankshaft pulley that drives an external pump. I don't know if the standard pulley is drlled and tapped for the adapter.
There is no over running clutch for the hand crank, just a special bolt head.



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