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Harry Ferguson Tractors Discussion Forum
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Single vs 2 stage clutches, questions...........

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RonW

07-15-2005 22:16:25




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I have a 57-58 model TO-35 with a single stage clutch. We do a lot of box blading and will start doing a lot of bush hogging. With the blade it is very difficult to keep the box where you need it. As soon as you touch the clutch, the box starts to fall. OK, now the question. What are the physical differences between the two? Could I convert to a 2 stage by putting the necessary parts into the drivetrain? I assume that the clutch plates and pressure plates are totally different. I have never had this tractor or any other broken apart, so I have no idea what it looks like on the inside. I will appreciate any answers, advise or observations. Thanks much. RonW

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phil(va)

07-16-2005 19:14:13




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 Re: Single vs 2 stage clutches, questions....... in reply to RonW, 07-15-2005 22:16:25  
As John notes, whether your clutch is single stage or two stage is not related to why your box blade drops when you tap the clutch. It should not do that with either type of clutch. You have something wrong in the hydraulic system and John will help you with that I'm sure. Now, I think inherrent in your post may be a question as to the difference between the single and two stage clutches. (If I'm wrong about that inference, pardon me for the long reply.) If you depress the two stage clutch halfway, to a "notch" in the pedal flow, the tractor will stop (like out of gear), and the PTO will keep running. If you depress it all the way, the PTO will stop (assuming you had the PTO on to begin with). In other words, it is related to the PTO, not the hydraulics per se. Helpful for brush hogging but not applicable when using a blade. Hope that helps.

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RonW

07-16-2005 21:34:20




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 Thanks Phil and................................... in reply to phil(va), 07-16-2005 19:14:13  
You and John were both very helpful. I had thought that the hydraulics were also affected by the clutch, but now I know that is not the case. I can focus more now on getting the lift system to work properly and I am going to contact John for the info that he offered. Thanks again, RonW



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John (UK)

07-17-2005 07:53:44




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 Re: Thanks Phil and............................... in reply to RonW, 07-16-2005 21:34:20  
The hydraulics ARE affected by the clutch, in a live-drive tractor (two stage clutch) the second clutch drives the PTO off the back of the Pump so if you press the clutch pedal ALL the way down it will stop the Pump and also the PTO, but at least you can then put the PTO out of gear and then release the clutch pedal and lift the three point linkage.



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John (UK)

07-16-2005 11:02:17




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 Re: Single vs 2 stage clutches, questions....... in reply to RonW, 07-15-2005 22:16:25  
It isn't really practical to convert a tractor to live-drive as there is too much involved. What you should do though is to find out why the hydraulics are dropping like that as it isn't normal, they should stay wherever you put the lever.
The engine flywheel is different
the clutch assy is different
the drive from the clutch to the gearbox is different
The gearbox internals are different.
That is just off the top of my head.
It is possible that you have been operating the hydraulic system incorrectly and the relief valve has been blowing and now it is leaking. If you need the instructions for operating this hydraulic system email me at:- fergusontractors at tiscali dot co dot uk
(replace the dot's and the @)

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RonW

07-16-2005 21:26:18




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 Thank you John.................................... in reply to John (UK), 07-16-2005 11:02:17  
and I will be contacting you for the instructions. RonW



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