There is a plug for filling the differential on the differential just below mid-way. There is another plug on the top of the worm gear case. It would appear to me that the plug on the worm gear case is unnecessary. Am I missing something?
Harold, I assume you are talking about a TT Ruckstell? I always thought the upper plug was for filling the housing, until I tried it once. I guess it was just for putting in lube for the rear worm bearing. That's about all that gets it anyway. Dave
Yes, David It is a 1926 TT with a Ruckstell and worm gear. I would think that the ring gear would pick up lubrication for the worm gear. Any oil put in through the top plug would only go to the bottom of the differential case as far as I can tell.
Good to know you're still with us, Harold! I've also had a question about the lubrication weight for my Dad's TT. Literature I saw said 600W. Where to find????
"Happy T-ing!" (Your line)
Harold, I think that is for the initial fill for the rear worm bearing after repairs or changing the grease. I don't know that for a fact, but that's all that I can figure. Indeed, the lube will go to the bottom of the case from the top plug, but it takes FOREVER! I used a multigrade lube(85W140 I think), which is much more fluid than the 600W I think, and gave up and filled it from the mid way plug. I have never really heard what the original intention for the upper plug was, but the early TT's didn't have a plug there. Henry needed it for something and that is my best guess. Maybe someone else will chime in here and fill us in. Dave
I have been away from T'ing for nearly a year due to my wife having two major surgeries and me having a heart attack. I just got the 26 TT out of the barn and fired up this week. I am doing a complete lubrication job now. The 600 W Oil is available from Mac's for $8.00 a quart. The item # is 16-16020-1. It is on page 216 of the current Mac'sCatalogue.
Here is what is in my TT Ruckstell