keiser31 Posted June 14, 2011 Share Posted June 14, 2011 (edited) Does anyone here have a shop manual for a standard 3-speed transmission similar to a 1931 transmission? I need to dissect mine, but want to do it in the correct order so as not to screw things up. Thanks. Edited June 14, 2011 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
Guest 1930 Posted June 14, 2011 Share Posted June 14, 2011 I have had this book 25 plus years from when I was in trade school. It will tell you more than you would want to know about manual transmissions. It dosent matter if they are 3 or 4 speed, internally they are very similar. If you would like to borrow it than let me know, I havent cracked it open since then. Link to comment Share on other sites More sharing options...
keiser31 Posted June 15, 2011 Author Share Posted June 15, 2011 Jason...thanks for the offer. I have decided to go at it today with reckless abandon and just start taking it apart. I will remove the top with the shifter handle and e-brake handle first and then remove the rear casting to get at the seal. We'll see if I can match a new seal up with the old one. I think that the insides of the transmission are o.k. as far as the gears and shafts...I know for a fact that the rear seal leaks so I will replace that, at least. Link to comment Share on other sites More sharing options...
keiser31 Posted June 15, 2011 Author Share Posted June 15, 2011 (edited) This one gear on the left does NOT look good. I cannot imagine that it is supposed to be stepped...and in my book the gears have angled teeth...in the transmission they are straight???!!! Edited June 15, 2011 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
hchris Posted June 15, 2011 Share Posted June 15, 2011 Relax; you are have the pre syncro straight cut gear transmission and from here it looks ok, the gears are supposed to look like that. Your illustration is of a later helical geared trans. Link to comment Share on other sites More sharing options...
keiser31 Posted June 15, 2011 Author Share Posted June 15, 2011 Relax; you are have the pre syncro straight cut gear transmission and from here it looks ok, the gears are supposed to look like that. Your illustration is of a later helical geared trans.Thanks...I just went out there again and shifted it into and out of gear and can now see that all is o.k. with the gears. I was having another brain fart and was mystified for a minute. Looks like since there are no pieces in the bottom of the trans, I will simply replace the gear oil and the rear seal like I had intended and put that baby back together! Link to comment Share on other sites More sharing options...
keiser31 Posted June 15, 2011 Author Share Posted June 15, 2011 I can also see now why it shifted hard...there was only about a pint of gear oil in the box! Link to comment Share on other sites More sharing options...
keiser31 Posted June 15, 2011 Author Share Posted June 15, 2011 (edited) Mmmmmm....there does not seem to be a rear seal...just a very thin gasket???!!! Anyone know what's supposed to hold the gear oil in? Edited June 15, 2011 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
Guest 1930 Posted June 15, 2011 Share Posted June 15, 2011 Isnt there supposed to be some going back to your spicer unit, then sealed at the ball. Link to comment Share on other sites More sharing options...
keiser31 Posted June 16, 2011 Author Share Posted June 16, 2011 You got me. The drive shaft hub slides into the end of the transmission, but there is nothing to keep the gear oil from coming out. I wondered why it was so messy. I would think that there would be a seal.... Link to comment Share on other sites More sharing options...
34dodger Posted June 16, 2011 Share Posted June 16, 2011 John...The rear shaft seal is located in the transmission brake support housing that you have taken off the main transmission housing. The seal runs on the OD of the mainshaft flange/brake drum spline. Bill Link to comment Share on other sites More sharing options...
34dodger Posted June 16, 2011 Share Posted June 16, 2011 Or are you talking about the oil that leaks through the splines?Bill Link to comment Share on other sites More sharing options...
Guest 1930 Posted June 16, 2011 Share Posted June 16, 2011 I said ball I meant bell,I think you will find out that the bell of your spicer is lubricated with the same fluid that is in your tranny Link to comment Share on other sites More sharing options...
keiser31 Posted June 16, 2011 Author Share Posted June 16, 2011 John...The rear shaft seal is located in the transmission brake support housing that you have taken off the main transmission housing. The seal runs on the OD of the mainshaft flange/brake drum spline. BillThe edge that you are talking about seems to have a hard surface that rubs against the shaft spline and no rubber seal at all. You can probably see the shiny part of the shaft... Link to comment Share on other sites More sharing options...
keiser31 Posted June 16, 2011 Author Share Posted June 16, 2011 Dear John, You do have a seal, it is a felt seal. It very well could be the factory installed seal. They didn't have rubber seals back then. Please see picture.Evidently, the felt seal is gone because there is only a very hard surface mating to the shaft. Link to comment Share on other sites More sharing options...
Jim Anselmo Posted June 16, 2011 Share Posted June 16, 2011 We have a local place here in Spokane that I take parts to (the ones in your picture) and they look for a modern replacement. I've done this with the seal you are looking for as well as seals on my rear axle. I usually will remove what is left of the leather seal and take that as well. The local place here is Brown Bearing. Link to comment Share on other sites More sharing options...
keiser31 Posted June 16, 2011 Author Share Posted June 16, 2011 Thanks very much for all of your replies, folks. I am looking for a replacement seal as I type. Link to comment Share on other sites More sharing options...
keiser31 Posted June 16, 2011 Author Share Posted June 16, 2011 Or are you talking about the oil that leaks through the splines?BillSorry, I did not get back to you on this, Bill. No, actually I was meaning the outside of the shaft/hub unit and the supposed seal that presses into the end cover. Link to comment Share on other sites More sharing options...
34dodger Posted June 17, 2011 Share Posted June 17, 2011 No problem, just wanted to make sure I wasn't barking up the wrong. Those old felt sealscan get hard as a rock after many years of absorbing dirt and grimy oil! Link to comment Share on other sites More sharing options...
keiser31 Posted June 17, 2011 Author Share Posted June 17, 2011 No problem, just wanted to make sure I wasn't barking up the wrong. Those old felt sealscan get hard as a rock after many years of absorbing dirt and grimy oil!Well, if this one is felt, it's definitely been petrified. It feels like steel! Link to comment Share on other sites More sharing options...
keiser31 Posted June 17, 2011 Author Share Posted June 17, 2011 Does anyone here know if the transmission was painted silver or the same dark gray green as the engine in the '31 DH6? Link to comment Share on other sites More sharing options...
keiser31 Posted July 15, 2011 Author Share Posted July 15, 2011 Minor update...got the transmission rear seal picked up (had to go get it myself 'cause the trans guy had no time to do it), took it to the trans guy and he installed it for free. The seal was $14.30 and is an SKF #17386/CRW1 R. Hopefully, I will be able to make my gasket, reassemble the transmission and finally get my car together. Still got a ways to go since it has been sitting and the master cylinder needs attention. Link to comment Share on other sites More sharing options...
RUF Posted September 28, 2023 Share Posted September 28, 2023 I need to remove the transmission from a 1931 Model 90. I have all the bolts off and it moves out about 1/4". What do I need to do to slide it out? Are there bolts attached to the flywheel? Yes, I am a newbie. Link to comment Share on other sites More sharing options...
Mark Gregush Posted September 29, 2023 Share Posted September 29, 2023 (edited) 14 hours ago, RUF said: I need to remove the transmission from a 1931 Model 90. I have all the bolts off and it moves out about 1/4". What do I need to do to slide it out? Are there bolts attached to the flywheel? Yes, I am a newbie. You have another post in the Buick section for the same car. In both cases, you need to start your own post in the correct section instead of coming in at the end of old post. While more than likely both Dodge and Buick would be removed the same way, there might be something that could be holding yours up that would be different then if it were a Dodge. You don't say in either post if the engine is in or out of the car. Fairly sure in either case, the bellhousing would have to come off to remove the transmission. Is that what is un-bolted? I would suggest filling in those blanks when you start a new posting. Best of luck. Edited September 29, 2023 by Mark Gregush (see edit history) Link to comment Share on other sites More sharing options...
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