doing rear full-float axle bearings
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doing rear full-float axle bearings
I have a 93 F-250 with the full-float rear axle, and my Haynes book sez that in order to get the hubs off to repack the bearings, I have to have a step plate to use with the puller. I've looked at the auto part stores, and none of them have a step plate. Where could I get one?
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From: Duncan,OK
Originally Posted by powvey
I have a 93 F-250 with the full-float rear axle, and my Haynes book sez that in order to get the hubs off to repack the bearings, I have to have a step plate to use with the puller. I've looked at the auto part stores, and none of them have a step plate. Where could I get one?
Pat
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From: Duncan,OK
I must have miss something in the 30 years I've been building axles. If primary means grease them when you assemble, Alright. If the diff is filled to proper level with gear oil the bearings are not just getting an occasional splash. they are swimming in it. The axles act as a crude pump of sort by drawing the gear oil out into the hubs, the over flow then runs back down the axle tubes in to the carrier housing. This keeps plenty of oil on the bearing. To much grease when you assemble can cause bearings to over heat because it restricts oil flow also some seals in this type axle need oil to stay cool. So if you must repack do so lightly do not stuff the hub. My advice if the seals are not leaking drain the the old oil once a year and refill. when you drain the old strain it through a rag and examine for any metal. Long thin dull colored fragments of metal are a sign of gear ware. the worst part about this metal floating around in the gear oil is it starts to take the hardness off the gears. Once the hardness is gone the gears will ware very fast. It also wares the bearings. Any shiney flakes show bearing ware, this is bad. When I drain a diff I like to take the axles out so that I can drain the hubs. This way I know it's getting a complete refill with clean oil.
Pat
Pat
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From: Spokane WA
Originally Posted by Hooker Bob
I must have miss something in the 30 years I've been building axles. If primary means grease them when you assemble, Alright. If the diff is filled to proper level with gear oil the bearings are not just getting an occasional splash. they are swimming in it.
Last edited by oldhalftons; Mar 7, 2005 at 11:00 PM.
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From: Duncan,OK
This is true and axle tube is open ended so the oil can flow between the axle shaft and the tube into the hub. The hub should be a little under half full when proper fluid level is maintained. Rolling action then keeps the bearings coated with oil.
Pat
Pat
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Post Fiend
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From: Dryden, ON, Canada
Yup, no seal on the axle to prevent oil from running into the bearings. The outer axle seal is in the hub.
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Pull an axle and you'll find out what lubes those bearings. I used peanut cans wrapped with mechanics wire to catch the gear oil and save the cleanup time (to some degree0
when pulling the shafts to get rears apart. This also saved the time of pulling the wheels/hubs. Also I never used grease on the bearings when I did pull a hub, just gear oil. Once I had the bearings adjusted I had a large Plews oiler filled with gear oil I added to the inital lube by pumping gear oil into the hub cavity.
when pulling the shafts to get rears apart. This also saved the time of pulling the wheels/hubs. Also I never used grease on the bearings when I did pull a hub, just gear oil. Once I had the bearings adjusted I had a large Plews oiler filled with gear oil I added to the inital lube by pumping gear oil into the hub cavity.
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