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john deere 4430 clutch slipping
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WELCHTRANS478
Posted 2/18/2017 13:51 (#5848104)
Subject: john deere 4430 clutch slipping


/mauk,ga
I know theres no adjustment on the clutch. But the clutch act as it's slipping. Put the tractor in 5th gear and it tries to move but want. so i put it in reverse it will move but when i try to back up a hill it will slip. the only forward gear that works is 3rd sometimes

4430 syncro range
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Turbo 8820
Posted 2/18/2017 17:03 (#5848362 - in reply to #5848104)
Subject: RE: john deere 4430 clutch slipping


S.E. Washington
So what's your question? If it pulls, the clutch is ok. Won't pull, clutch system is bad and repair as needed. A service manual is cheap if you want to run down the diagnostic steps. Just to be a nice guy I will tell you step #1 cause I think that's what you're asking? The clutch manifold is under the drivers door side cab mount. Look for a plug labeled clutch. Put a gauge on it. 150-175 psi is what you want to see.
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thorfarms
Posted 2/18/2017 18:52 (#5848521 - in reply to #5848362)
Subject: RE: john deere 4430 clutch slipping


Lincoln, North Dakota
Pick yourself up a tech manual, couple male DR fittings, female DR, hose and 0-200 LF gauge.
Check your regulated clutch pressure. Like above poster said 150-175 PSI. Transmission in neutral Step the clutch down you should have zero pressure on the clutch pressure. Start letting clutch pedal up and the pressure should start climb with the pedal being let out and when you reach top or engage you should reach full pressure. A perma clutch has to have pressure to engage. The clutch operating piston has to extend out and compress the clutch levers to lock tight to provide traction. Opposite of a convention clutch. If you have proper transmission operating pressure and regulated clutch pressure and tractor slips its more than likely your clutch is fried. If your pressures are low they can be shimmed up to pressure. If your clutch pressure doesn't rise with your pedal equally you could have a clutch piston leak. Or a leak in the in the valve or the jumper tube behind the valve


Edited by thorfarms 2/18/2017 19:05
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WELCHTRANS478
Posted 2/18/2017 19:05 (#5848543 - in reply to #5848521)
Subject: RE: john deere 4430 clutch slipping


/mauk,ga
tech manual is on the way
the pressure is around 80-90 psi warmed up. no external leaks.

where does the clutch get its pressure from the trans pump or pump up front?
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thorfarms
Posted 2/18/2017 19:07 (#5848549 - in reply to #5848543)
Subject: RE: john deere 4430 clutch slipping


Lincoln, North Dakota
Your clutch pressure is way low. Now you have to determine why it is low.
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thorfarms
Posted 2/18/2017 19:13 (#5848563 - in reply to #5848549)
Subject: RE: john deere 4430 clutch slipping


Lincoln, North Dakota
Transmission pump in back.
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