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4440 wet clutch

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4020

01-11-2003 06:24:53




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i'm building a 4440 for pulling. I want to plumb my clutch so that the pto piston and the clutch piston work together. Any ideas?




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WTW (Very Simple)

01-12-2003 15:30:14




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 Re: 4440 wet clutch in reply to 4020, 01-11-2003 06:24:53  
Not that hard to do, I doubled up perma clutches years ago for pulling reasons and never had one fail me yet. First to tie the two clutches together weld the traction and PTO clutch hubs together. I center them up on a lathe and weld a bead clear around the diameter of them. Second take the two oil pipes between the clutch control valve and actuator that supply oil to the PTO clutch and PTO brake and tap a 1/8" pipe thread in one end of them and plug them with a 1/8" internal allen pipe plug. Put these two pipes back in there original location when reassembling. Now the last and easiest trick to make the traction clutch pedal control both engagement pistons / bearings. Remove the Actuator assembly and locate the plug in that housing that contains the lube relief valve (7/8" wrench). Remove plug, spring and spool valve. Drive cross-pin from housing and remove second (short) spool valve located above cross pin and discard. Reinstall cross pin, long spool valve, spring and plug. If you want to know how this works just study the service manual drawing and you will see. I also remove the PTO brake piston while the actuator is out as it is non functional anyway. I do leave the PTO clutch shaft in housing as it will act as a carrier bearing for the clutch hubs. If you have any question just email me and I know I can answer them. There is not a bolt that I haven't tuned on one of these at least a couple of times. Adjust finger height on perma clutch just as the manual tells you to do. Good Luck, Dave W.

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WTW (Correction)

01-13-2003 07:28:08




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 Re: Re: 4440 wet clutch in reply to WTW (Very Simple), 01-12-2003 15:30:14  
I intended to say lube "reduction" valve not (relief) valve. Sorry, DW



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G-MAN - p.s.

01-11-2003 09:52:35




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 Re: 4440 wet clutch in reply to 4020, 01-11-2003 06:24:53  
If you try that method, you might have to do some modifications to the PTO side of the clutch valve to prevent oil from leaking through the PTO valve area. I would recommend getting a service manual and tracing out the oil flow path to make sure it's going to work correctly.



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G-MAN

01-11-2003 07:29:02




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 Re: 4440 wet clutch in reply to 4020, 01-11-2003 06:24:53  
First, one question. Is there some kind of hopped-up transmission top shaft that drives off of both sides of the clutch to transfer more power or something? I've never heard of that arrangment before. As far as pressurizing both simulatenously, the thing that popped into my head would be to run a jumper line from the port for the clutch pressure DR (diagnostic receptacle/quick coupler) to the PTO pressure DR. I'm not guaranteeing it will work, but that would be the easiest way to do it.

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4020

01-11-2003 14:43:21




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 Re: Re: 4440 wet clutch in reply to G-MAN, 01-11-2003 07:29:02  
I've got a coupler to hook the clutchs together. I'm going to take the bottom side of the quad pack out.I've heard that they break rather easily.



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Brad

01-11-2003 14:52:16




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 Re: Re: Re: 4440 wet clutch in reply to 4020, 01-11-2003 14:43:21  
I have a 4440 that we run in out open class in Iowa. I have mine configured to run liek you described. you're on the right track with the jumper hose. You also have to plug the hole for the PTO brake, as well as weld the two shafts together.
Email me at bl4440@schallertel.net for more
Brad



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