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EFV-8 Club Forum / General Ford Discussion / 1939 bearings and grease seals

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Discussion Topic: 1939 bearings and grease seals -- page: 1 2

parrish

11-30-2009 @ 7:39 AM

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inner seal last picture

parrish

11-30-2009 @ 7:38 AM

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more inner seal pictures

parrish

11-30-2009 @ 7:37 AM

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I had to pull the passenger side last night and found one of these "inner seals" (pictures attached)...so it sounds like I am ok not bothering to replace them (if they are even available)? This assumes I don't see evidence of leaking differential oil?

parrish

11-09-2009 @ 7:15 PM

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Thanks to Ken for the drum grease clarification! Thanks to Tom and Gary for the mystery seal input.
The picture that Gary included is EXACTLY what my mystery seal looks like! I only found it on the driver rear. I used an old hub puller on the passenger side and when the drum 'popped' it slid right off. But when the driver side popped, I had to continue screwing the hub puller to keep the drum moving off the shaft. When it finally released, I saw this strange little half seal halfway off the shaft. It was a little distorted and must have been caught in the key. Is there any way to test the integrity of inner seal? When I eyeball the gap between the axle housing and the shaft, I see fairly thick grease that I haven't yet disturbed. How far back on the shaft would the inner seal sit? Can I visually spot it if I clean off the grease between the housing and the shaft?

G Tosel

11-09-2009 @ 11:46 AM

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I do not agree that a potential problem does not exist. If the inner seal between the axle and the housing leaks oil, it would go to the space between the axle and the housing to the back of the roller bearing which rides on the axle housing. This would then potentially go into the roller bearing itself. If the grease seal works, the only issue is oil into the grease. No problem. But if grease or oil then leaks through the roller bearing seal, it will go to the brake drum since this seal is desingned to keep grease in the bearing and not the brake drum. This means that only if there is a double failure of the oil seal and the grease seal, could oil/grease leak into the brake drum. Grease or oil would not leak between the axle and the drum since this is a tight fit.

Thanks for your comments.

Gary Tosel

TomO

11-09-2009 @ 6:36 AM

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Gary, I don't know how gear lube from the differential could get on the brake shoes. The axle housings are solid from where the bearings and inner seals fit to the end of the axles. If the inner seals leak, the lube would collect in your hub caps and then be spun all over your tires.

The package that you show, fixes a non-existent problem. The rear wheel bearings have grease seals that keep the bearing grease in the hub and off of the brake shoes. These seals are held in place by a split ring. From the description on the package, I assume that these rings are to replace the split ring and would probably not do a very good job of that.

Tom

39 Ken

11-09-2009 @ 4:27 AM

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Parrish, Don't use the grease that you mentioned here. It is NOT for your application. The bearings and races in the early Fords don't have tight clearances so you need a very thick grease.You need a Drum Brake Bearing grease. I use Sta-Lube SL3131 available at NAPA that is for drum brake bearings. It also is used in your front bearings. Here is a link to what NAPA has. It may have to be ordered but they can get it over night. Here is a link to what I am referencing.
http://www.napaonline.com/MasterPages/NOLMaster.aspx?PageId=470&LineCode=SL&PartNumber=SL3131&Description=Wheel+Bearing+Grease

G Tosel

11-08-2009 @ 8:19 PM

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It is possible that this picture is what is left from what has been discussed as the after market seal solution to differential oil leaking into the brake drum through the bearing grease in the hub. I have attached a picture of these items from Otto-Items, Inc located in St. Louis MO. I found these at a swap meet many years ago and although I replaced the inner seals in the axle housing I also installed a set of these seals on my 36 Ford Coupe.

Thanks, Gary Tosel

parrish

11-08-2009 @ 7:20 PM

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I looked at the local auto parts and couldn't find the yellow "drum brake" kind of grease you recommended...can I use Valvoline Ford-Lincoln-Mercury Moly-Fortified Multi-Purpose Grease? It says 'Disc Brake Wheel Bearings" among other things...I received my grease seals and they are the red kind so that seems a good start. The seal lip always points toward the contained grease, correct?
Also, out of general curiousity, why shouldn't one use compressed air to spin dry the bearings (I'm not!) Does it force the water into crevices and become trapped? Thanks!

supereal

10-28-2009 @ 10:01 AM

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Glad to assist. More than likely, the thing is some sort of seal that was meant to stop differential oil from entering the hub and coating the brakes. As said earlier, if the oil level is kept below the filler plug, there shouldn't be that problem. Years ago, there were all sorts of aftermarket "fixes" for Fords sold at places such as Western Auto, etc.

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