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John Deere 4430 rear axle oil leak
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TRANSBOER
Posted 10/6/2015 16:11 (#4826454)
Subject: John Deere 4430 rear axle oil leak


Western Cape, South Africa
My 4430 is leaking oil on the left axle. I need the tractor because its my loader tractor and don't really have the time to fix it right now. Can I remove the whole axle and trumpet housing and swap it with another from a salvage yard? I am planning to fix the axle that is leaking, but I thought if I can just swap it and fix it later I can save some time. Will a axle from a 4630 or 4440 also work or must it be from a 4430 specifically. Thanks



(4431.jpg)



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tjdno1
Posted 10/6/2015 16:23 (#4826462 - in reply to #4826454)
Subject: RE: John Deere 4430 rear axle oil leak


Cartwright, McKenzie County, North Dakota, USA
I am not sure if the housings are the same but measure the axles to make sure they are the same size diameter. It doesnt take long to pull the housing off the axle and change out the seals. Check the bearings and races for wear and replace those as well. It takes a torque mulitplier to set the preload on the bearings and a certain crush measurement using lead balls to set the shim pack up right. Will also give you the chance to check the brakes to see if they need replacement too. The old style riveted brakes lasted for 10000 hours and the updates lasted about 500 hours.
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kswrenchturner05
Posted 10/6/2015 20:43 (#4826867 - in reply to #4826454)
Subject: RE: John Deere 4430 rear axle oil leak



Geuda Springs, Kansas
That sounds like a lot of work. Just take the axle off and rebuild it. It will not take that long.
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SteigerSt320
Posted 10/6/2015 21:13 (#4826947 - in reply to #4826867)
Subject: RE: John Deere 4430 rear axle oil leak


Northeast Louisiana
I agree, I can have it done before you do all the swapping around.
Your doing it the hard way.
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twraska
Posted 10/6/2015 22:42 (#4827179 - in reply to #4826947)
Subject: RE: John Deere 4430 rear axle oil leak


Wallis, TX

Also,,,, If you pull the whole housing, you can fix it right there, no need to break the wheel and tire off the axle.  You just hold the tire, rim, wheel and axle with a forklift and remove the housing.  Then on reassembly, you do a 'rolling torque' on the housing rather than the axle.

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kswrenchturner05
Posted 10/6/2015 23:29 (#4827244 - in reply to #4827179)
Subject: RE: John Deere 4430 rear axle oil leak



Geuda Springs, Kansas
That's the best way to do it.
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TRANSBOER
Posted 10/7/2015 06:48 (#4827425 - in reply to #4827244)
Subject: RE: John Deere 4430 rear axle oil leak


Western Cape, South Africa
So I remove the rear axle and loosen number 27 on the diagram, pull the housing and knock out / off the bearings ?I want to get the parts before removing the axle, replacing the seals and bearings. Do I order numbers, 3,6, 7, 13, 14, 15 and what else. I don't have any special tools, how do I do a rolling torque?



(4430 axle.gif)



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Attachments 4430 axle.gif (66KB - 543 downloads)
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kswrenchturner05
Posted 10/7/2015 07:39 (#4827528 - in reply to #4827425)
Subject: RE: John Deere 4430 rear axle oil leak



Geuda Springs, Kansas
Yes loosen 27 and everything goes out. bearings can be replaced if the are bad. I have made a bar welded a socket to it in the middle to put a torque wrench on. Putting it back together put your center center pinion back in with your brake disk. Tack weld a small tack on the pinion gear to keep the brake disk from sliding off while connecting back to tractor. The gear you tack weld is 29.
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TRANSBOER
Posted 10/7/2015 08:23 (#4827595 - in reply to #4827528)
Subject: RE: John Deere 4430 rear axle oil leak


Western Cape, South Africa
So when putting back together I must torque number 27 ? Sorry for the stupid questions I havent done something like this before
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cjd12000
Posted 10/7/2015 09:20 (#4827712 - in reply to #4827595)
Subject: RE: John Deere 4430 rear axle oil leak


candor ny
Yes and there is a updated lock for # 27 as it does come loose with old lock. Might even be loose already. And if you get a salvage one you will have to make sure #29 matches. They were different to axle cast housing numbers. Learned all that this summer as one my stepdad has #27 came loose and neighbor had to replace whole axle housing because dealer left out 2 of the #16 pins on gear and gear spun plowing and smashed housing. They bought him a salvage one but stub gear had to be changed and we did not figure that out till it got put together once.



(20150503_193029.jpg)



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