Fino's 58 Wagon

You need one?

 

Making a bit more progress...with the mainshaft disassembled, time to work on the countershaft. Apparently, with wear, 3rd gear can have issues jumping out of gear. I don't know the history of this sm465, and if that was an issue, but I bought the 3rd gear upgrade kit from Novak as I only want to pull this thing apart once. The upgrade requires pulling the large counter gear and replacing the splined collar and two snap rings behind the gear with a sleeve.


Had to max out my gear puller, but it came off easy.


The parts the sleeve replaces:


Sleeve goes on here and large counter gear will get pressed back on:


Not sure I could get the counter gear back on without a press...might be able to drive it on but I think I need a press for the mainshaft bushings and general shop use, so added this to a my friends garage (doing this work in Montana so not in my garage):


Getting one day a week off and trying to work in a friends garage 40 miles away from my winter residence means progress is slow...but excited to think all the teardown is done and time to put stuff back together...off to see if I can press on the counter gear.

 

Large counter gear went on easy with press (could have driven it on if needed)... hopefully not too easily...thinking it's close to beer-thirty...

 

Well...there is quite a bit of discussion/warning about cracking the mainshaft bushings when pressing them on...I heated the bushing, but maybe didn't freeze the shaft enough...anyway it cracked


time for a new plan, and gotta order new bushing as well - probably a few so I got some extras...guessing I'll split another one.

 

You have to press off some of the gears and bushings to disassemble the mainshaft as well as to press on the new mainshaft bushings...so if you have one you should be good to go. 2 of the 3 bushings are the same, so after splitting the first one, I tried again and it worked....FWIW, the first attempt I tried pressing the shaft down into the bushing that I put on the press base/apron as I didn't have a the right size pipe to fit over the shaft...I think the extra height/length of the shaft makes keeping things alingned vertically very difficult when pressing down...it's easy for the shaft to move off axis and it creates a lot of lateral leverage on the bushing potentially cracking it. On the 2nd attempt, I fixed the shaft on the press base/apron, and jumbled together a pipe sleeve and old bushing to fit over the shaft and press the new bushing down onto the shaft...I think this is easier to keep aligned as well as there is much less lateral leverage on the bushing...or maybe I just got lucky... In other words, I don't think it's unreasonable to do it all yourself....

 

Ok...I have had some difficulty with pressing on the 1st-2nd synchro hub...I think I may effed it up beyond repair? There is now a ridge in the middle of the splined from where it got off-center out of alignment when trying to press on....is it salvageable, can I file it or do I need to order a replacement? Arrgh....

 

I think the mainshaft is ok...it's supposed to be hardened compared to the hub? Trying to file it and see...if I get it on and it wobbles, I'll press it off and buy a new one...look to be $70-80 plus shipping...already ordered a second set of bushings after cracking the first one....

 

Well an hour or two of hand filing seems to have worked....also gave some extra hours for the mainshaft to sit in the freezer. After heating the hub, it went together ok and it seems good to me ....also pressed on the first gear mainshaft bushing without incident... here's the shaft with some of the hard steps out of the way with the first and second gear bushing pressed on and the central second gear hub as well....


Began working on modifying a smaller pipe sleeve to press on the smaller 3rd gear bushing, but called it a night.... hopefully it was one step back and two forward so a net gain.... until next week....

 

A bit of progress...all bushings and synchro hubs pressed on etc...one side of mainshaft complete.... doesn't seem like a lot, but I am slow and only get a couple hours every so often.

 

Thought made some progress finishing the mainshaft with install into case...but initial inspection suggests there is too much movement in 1st gear...it can rub on the inside of the case...I think I left out a thrust washer between the rear mainshaft bearing and 1st gear...but too tired dejected to deal with it tonight.....

 

Massive eff up...I had to remove the snap ring to pull the rear bearing to add in the thrust washer I left out


But when putting it back together, I was too focused on figuring out the asymmetrical stepped thrust washer and somehow forgot the bearing snap ring and started pressing on the bearing with the bearing backwards. By the time I realized it, the snap ring groove is too far into the case to get the splitter on it to pull it...


the mainshaft can't slide back enough as 1st gear hits the case, and can't slide forward enough to pull through and remove as the bearing doesn't allow the rear of the shaft to tip down so the other end can raise up to clear gears on the counter shaft. No idea how to pull this bearing back out... probably going to have to destroy it to somehow clamp something onto it?