I just installed a rebuilt Ruckstell and on it's maiden voyage of 20 miles and again today on about a 5 mile jaunt I notice oil discharging from a tiny hole on the left shell just off the midline and above the axle level.
There is a second such hole a little further off the midline that has a hint of oil in it, but isn't discharging.
This is a 26 Coupe and I'm using 80-90 weight NAPA Stay-Lube. Originally I filled to the level of the plug, but before today's run I had removed some so it is down about "1 knuckle" below the plug.
Are these some kind of vent ports or rust holes? They appear so precise that I doubt the latter. What to do; plug them or keep mopping up the drips?
Data plate rivit holes perhaps.
rivit plate holes. plug them up
I thought the data plate was lower than that??? I can't go look at one right now, but I thought the data plate was about equal with the fill plug on the other housing?
Just me, muddying up the waters.
If they are the data plate holes, just wipe the area with some lacquer thinner (or something similar that does not leave a residue). Allow to dry for about an hour, then push a small amount of epoxy or J B Weld into the holes.
You could get a reproduction data plate first, and use epoxy and the rivets without peening the other end of the rivet (I am not crazy about that idea). Attaching that plate is best done with the housing apart from the rest of the rear end.
If those are not the data plate holes? I have seen housings with casting flaws that leaked oil a bit.
Picture is cropped in too much to assertain orientation but pretty sure they are data plate rivet holes.
Try and find a specialist in machine tooling and machinery fixings. Often Lathes, saws and Machines have thin data / name plates etc fixed with serrated shank rivets for tapping into blind holes. Easier than pulling apart and safer than JB as it sets rock hard & if you squeeze too much inside?
Buy a Ruckstell plate and install it with two drive rivets with a little sealant on them, and forget it! Why mess up two holes that are supposed to be there? By the way, the Eaton plates are now available.
Plate location - Google Images
Neat pic Tom, note the shallow "Hall Scott" lettering on the side of the housing!
Judging from the symmetry and placement, I concur that they are probably from a data plate and will plug them.
The vendors sell the data plate. I think they sell the tiny rivets as well, but I couldn't find them on their website.
If you have a "Big Drum" Ruckstell axle and you want to put the correct I.D. tag on it, which appears to be missing, the correct tag will be available in the next few weeks.
The correct tag for the later axles were not like the one pictured above in the photo posted by Tom Miller. They were not rectangular, but had clipped corners. These were the axles made by Eaton Spring and Axle.
The tags that are soon to be available have never been reproduced to my knowledge.
In the mean time, you can temporarily plug the holes with bees wax to stop he flow of 90 wt. If a little wax should squeeze into the housing, no big deal.