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Inner oil seal of rear axle


 
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johnz
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Joined: 02 Jul 2007
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PostPosted: Mon Jul 02, 2007 1:30 am    Post subject: Inner oil seal of rear axle Reply to specific post Reply with quote

Perhaps I'm dealing with a 'hybrid'. I pulled the right rear axle to check the bearings of my 'new' 8N, serial number 500798, and noticed the axle shaft does not have a machined surfaced for the inner oil seal to contact. The axle surface is uniformly rough throughout this area similar to other areas of the axle. I find this strange.
Note: More hybrid evidence(?) It also appears to have an oil seal retainer assembly for the outer seal which were used on 8n's prior to serial number 486753 (to the best of my limited knowledge as per shop manual, page 81) So, some questions:
1. Is this a 'hybrid' issue?
2. If I continue to use this axle, how does the wheel bearing grease stay on the bearings. The bearings were essentially dry as the grease had moved off the bearings and deposited itself in a circular ring-like manner on the inner surface of the axle housing.
3. Could the Hydraulic/tranny fluid 'wash' off the wheel bearing grease from the bearings and make this hybrid part not functional in this 8N? (Hydraulic fluid was found in the bearings).
4. I may have answer for the previous question, correct me if I'm wrong, By having an outer oil seal, it is assumed that the hydraulic fluid will pass through the inner seal, and therefore require an outer seal to prevent fluid loss.
5. How often do you need to repack the bearings with wheel bearing grease?
--sorry for the long post and I thank you for your assistance..jw
 
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