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Modern Tractor Discussion Board Topic: FWA planetary seals - how do I replace [Return to Forum] Author [expand] [Modern View] Ken Macfarlane 06-17-2009 10:21:04 156.34.142.102 20591 Report to Moderator Never torn down a planetary axle before. The Dana AG85 front axle is leaking on one side, I assume baling twine got into as the previous owner fed round bales daily. I have ordered the two seals and the sheild that are listed, beyond that I'm not sure! I assume you pull the outer cover, and can then remove a circlip and pull the king pin bearings letting the axle shaft slide out? The planets and carrier must pop out too but not sure how the hub mounts to the knuckle. Any help out there? [Reply]  [Send Email] RodInNS 06-17-2009 13:47:09 216.118.158.123 20593 Report to Moderator Re: FWA planetary seals - how do I replace in reply to Ken Macfarlane, 06-17-2009 10:21:04   If the large hub seal is leaking, that could very well be the result of twine. However... if the axle seal is leaking, or even the hub's shaft seal, that could be from bad king pins/bearings, so be prepared for that when you dig into it. I'm not familiar with the Dana axles but any ZF or Carraro I've worked on was basically the same... On those you remove the carrier/cover, then pop the snap ring off the sun shaft, then remove the king pins. King pins are nice to remove in theory... I usually just get a screwdrive under the head, then a chisel and keep working them. Get some lube on them, keep working, etc. That siad, one Carraro wouldn't give up so I ended up cutting the cardan out and drifting it from the top.. The hub's that I've dealt with were all retained by the ring gear itself which was bolted to the hub. It's quite simple once you get the cover off. King pins are the worst... and Carroro the worst of the lot. Those were shimmed with plastic shims. Lot of jerking around/measuring to get them right again. The ZF is a tapered roller bearing. Slap new ones in, done. Hope the Dana is as simple... Rod   [Reply]  [Send Email] Ken Macfarlane 06-17-2009 10:59:43 156.34.142.102 20592 Report to Moderator One piece of the puzzle in reply to Ken Macfarlane, 06-17-2009 10:21:04   Need an M14 puller to remove the kingpins. Hoping a slide hammer works.   [Reply]  [Send Email] [Options]  [Printer Friendly]  [Return to Forum]   [Add a Reply] Hop to: Another Forum Tractor Talk Tool Talk Restoration Tips Paint & Bodywork Implement Alley Tractor Transporting Allis Chalmers Case Combines Crawlers Farmall & IH Ford Ford 9N,2N & 8N Fordson John Deere MH & MF Harry Ferguson Minneapolis Moline Oliver & Cockshutt Garden Tractors Orphans Stationary Engines Today's Tractors Memorabilia Tractor Tales Using Your Tractor Tractor Pulling Site Comments Test Forum Buyer Seller Feedback Kountry Life Classic Trucks