790 4x4 front axle leaking: John Deere Review  -- John Deere Tractors Discussion Forum and Review 790 4x4 front axle leaking: John Deere Review -- John Deere Tractors Discussion Forum

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 08-13-2012, 10:42 Post: 184635
hardwood

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 790 4x4 front axle leaking

I'm not sure if they used the same front axle but I had the left hub leak on my 4310 at about the same hours as you have. If the hubs are the same ther are about eight or ten capscrews around the outside of the gearcase that holds it together.
Remove the front wheel, take the eight or ten capscrews out to pull the gearcase apart. Mine had all but no play in the bearings and the seal next to the outside en of the hub looked fine but I replaced it anyway. The leak stopped even tho the old seal showed no wear or damage, an there was no wear on the shaft where the seal rides.
It was an easy fix, but I still haven't figured out why it leaked in the first place. You will need a tube of some special Deere sealant that goes around the outside of the seal and also between the two halves of the casting, there is no gasket.

Frank.






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 08-13-2012, 11:08 Post: 184637
hardwood

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 790 4x4 front axle leaking

Brian;

I got the seal and the tube of sealant at a Deere Dealer parts counter. It wasn't a seal kit, just the individual parts.
If the innards are the same as mine you will need a good snap ring pliers. There is a stiff snap ring that holds the bearings, the drive gear, and a spacer on the shaft. This assembly has to come apart to get the shaft out of the housing where the outer seal is located. If you are anything like me the snap ring may go "KaZing" and be lost forever, so it might not hurt to get a spare when you get the new seal.
As I said before the old seal looked like new, there was no play in the bearings, but replacing the seal fixed it.

Frank.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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