Leaky Rear Axle - p...
 
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Leaky Rear Axle - period & modern solutions?

 
Craig Correll
Active Member

I've finally got our 1912 Michigan on the road..... but it's not road worthy yet.  It doesn't want to stop. The brake linings were completely soaked with differential oil (that was their condition as found in the barn). Apparently, the axle shaft and bearings have no seals. What should I consider as a period fix before resorting to machining and modern seals--- if anything is actually available that would fit. The axle is a floating type with space in the axle tubes for lubricant to flow out to the hubs/ wheels -- where it leaks onto the wheels and brakes. I have some photos below.  Thoughts? Solutions?  Thanks, Craig Correll

Rear Wheel & Axle
Brake drum, brakes & axle
Inside Brake drum & bearing shield
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Topic starter Posted : October 22, 2021 1:32 am
Mark Strange
Trusted Member

The Model T Ford vendors sell a modern inner seal that works great.  You can contact them to get the ID and OD to see if it would fit.  They also sell an outer seal, but it is designed to fit over a rather large flange on the brake backing plate.

 

https://www.modeltford.com/item/2511AS.aspx

https://www.modeltford.com/item/2510N.aspx

 

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Posted : October 22, 2021 12:54 pm
Peter Mc Intyre
Trusted Member

Craig being the axle is full floating,this means the gear lube is what also lubes the rear wheel bearings.With this in mind you will have to seal the bearings after they are lubed-sealing before they are lubed will result in a burned bearing. Post more pictures of the bearings in there races in the hub.  Cheers pete

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Posted : October 25, 2021 6:41 pm
Craig Correll
Active Member

Yes, the bearing needs "a little" lubrication. The bearings in the hub were probably replacement New Departure closed bearings. No separate race or ball bearings. The number for the bearing was on one side. ND D310 A12 Z.  I cannot find any cross reference or literature on the number for that bearing. Check out the exploded and annotated photos that I have attached. This may give you some further ideas on stopping leakage of differential oil.  I have added some felt seals and changed the differential oil to 1500 weight.

Rear Wheel Exploded1

 

Brakes & floating collar & NOTES

Thanks, Craig

 

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Topic starter Posted : November 6, 2021 1:37 am
Peter Mc Intyre
Trusted Member

Craig what are the measurements of the bearing in millimeters?  Pete

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Posted : November 7, 2021 2:27 pm
Craig Correll
Active Member

Sorry Pete, measuring is not easily available -  the axles are all buttoned up and --- I HOPE --- sort of sealed. We used a combination of felt seals (made some dies & cut them ourselves), an "O" ring, and a bit of RTV silicon sealant on a slot on the axle tube that was for nut locking tabs & a non-spinning washer that all have tabs on the inside. (see exploded view photo from prior post). We drove the car around the block (no obvious axle leaks yet), but we discovered that reverse gear is making a horrid grinding noise. Consequently, we pulled the transmission and our fully assembled car is now without a transmission that I'm pulling apart to see what is causing the terrible grinding in reverse. Ah..... old cars..... it's always something. Cheers!  Craig

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Topic starter Posted : November 7, 2021 10:11 pm
Peter Mc Intyre
Trusted Member

Best of luck !  Keep us posted cheers pete

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Posted : November 7, 2021 10:16 pm
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