I had this posted in the newbe section but was not getting any love over there so i will try here.
was wondering what you guys use to remove the input shaft bearing on a sm465. I have had trouble finding a puller long enough to fit over the long input shaft. I also tried using a punch from the back side but can only get the bearing to move so far. Any suggestions, I am running out of time to get this thing apart and back together and this part is really holding me up.

Thanks

Paul

Is there a small lock ring behind the bearing retainer? If not maybe gently trying to hook the outer race with a dent puller.

i have taken all of the snap rings out.

Novaks web site has a good breakdown picture of the transmission. Part of the advert for the rebuild kit. Has this input shaft gotten hot enough to friction weld the bearing to the case or input shaft? If so you may have to pull the whole thing apart and have it pressed off.

i just bought the tranny the other day from someone so i have no idea about the history of it. I was able to move the bearing partly out of the case and have it move on the shaft as well. I used a punch from the backside of the bearing. It gets hung up right about where the outer most snap ring goes (smaller one). Everywhere i have read about removing it says i need to use a puller but i cant find one long enough.

can you remove the input shaft, then use the puller?

I had a bearing seize into the rear output housing of a 203 and it caused the output shaft to be impossible to move, i had to beat literally beat the shaft out and replace the bearing. I heated it red hot and tried as hard as i could to get it out and it finally budged. i was screwed though cause no one had the bearing so i ended up just stealing an output off another 203 and making it work.

it might just get to the point where the bearing wont run true. in that case u need to replace it. it happens often during dissassembly.

i dont thin kthat will work because you still have a large gear that is attched to the input shaft that is to large to slide through the bearing hole. I think i just need to find a large enough puller unless there is another trick.

hell with it cut the input shaft off and pull the bearing hahaha:D

i was thinking about that:flipoff2:

About the only thing I can recommend is to see if you can put some screwdrivers in the input shaft slot and try to rock it out. You have to put something on the face of the transmission and have help pushing on the bearing from the inside of the trans. Does this make sense to you? It is kind of hard to explain, but if you can wiggle the main shaft enough to get the bearing past the slot in the case it may work.

There's a flat spot on the gear, rotate the input until the flat spot is down, you kinda have to fish it over and out. It gets a little easier if you pop out the idler shaft front bearing and drop it down, gives you another 1/4" or so. Pull the bearing once the input shaft is out.
There is a really great rebuild manual online, I think I got it off ck5.com, but search google, and it will come up.

There's a flat spot on the gear, rotate the input until the flat spot is down, you kinda have to fish it over and out. It gets a little easier if you pop out the idler shaft front bearing and drop it down, gives you another 1/4" or so. Pull the bearing once the input shaft is out.
There is a really great rebuild manual online, I think I got it off ck5.com, but search google, and it will come up.


How is it possible to remove the main shaft with the front shaft bearing still on? Maybe i am being retarded with this whole thing, but it seems like the only way to get the main shaft out is to first remove the input bearing. let me know if im retarded here

Had the same problem with my T19... input shaft was so long I couldn't get the puller to reach. I made up a couple of extensions out of scrap angle iron.

If you take the counter shaft cover off and slide the shaft back so the big bottom gear can drop a little, you should be able to get the whole mainshaft out. You need to remove the snap ring on the back of the countershaft in the back of the case to slide it back a little. What should be your hangup is the shoulder the slider goes on when you engage high gear. Slide the synchro back into 3rd gear and the ring should stay with the mainshaft as you pull the input out. If this is clear as mud to you, the go to Novaks website and look at the trans schematic. It will make it easier to understand. A picture is always easier than an explination. Good luck...keep us posted.

ok well i was retarded. I was able to remove the input shaft with the bearing still on it, what a pain in the arss. But now i cant get the rest of the main shaft out. The bearing is stuck on the shaft pretty good. But at least i will be able to find a puller the hopefully get that bearing off (if the jaws fit in the snap ring groove)???. I guess after 25 years the bearings tend to sieze themselves on there pretty good.

Good, look that schematic up on Novacks site. You'll get the rest apart just fine.

yeah i have that thanks. It is helpful knowing what each piece is called. I didnt realize that the main shaft is two parts. I am hoping that a gear puller or bearing spitter will fit into the snap ring grooves or else i will have a hard time getting that main shaft out. I will let you guys know tomorrow when i go and pick one up. Thanks for the help so far.

The bearing is stuck on the shaft pretty good. But at least i will be able to find a puller the hopefully get that bearing off (if the jaws fit in the snap ring groove)???. I guess after 25 years the bearings tend to sieze themselves on there pretty good.

told yah.:flipoff2:

at least you got the input/bearing out without damage. thats half the battle

actually i didnt get the input bearing off the shaft yet, but i got the entire input shaft out of the case, now i need to get the main shaft out.

Bearing splitter and hydraulic press make quick work of that input bearn'. Can also use a Victor hot wrench to heat the inner race up and tap the bearn' off. If any crap buildup on the area of the shaft the bearn' has to slide over-get some crocus cloth and polish it up. Depending on how much interference fit the new bearn' has-use still made need a hydraulic press to install it. Make sure it is lined up right and not cocked before cranking up the pressure.

thanks for the info bud

so i got the main shaft bearing out and removed the shaft from the case. Then i was able to remove the countershaft bearing. But i am having an issue removing the countershaft. It seems like you need to remove the idlershaft first. But how do you go about doing that. Do you just punch it out from the front side? Next issue i saw was the reverse gear on the idler shaft. Thereis a bushing type thing that slides inside the gear, but it seems like it is not in very far, how far should that bushing be inside the gear? Seems like it might have worked itself loose.

Thanks for the help.

on the back of the trans, theres a tab that holds the countershaft pin in the case.

remove the tab, tap the front end of the shaft out towards the rear. it should go. its a tight fit, but it should go.

here is a pic of what i am talking about with the reverse idler gear. Does this look right to you guys? How do you remove that tab? Removing it by pulling it out of the case with some pliers or something?

ok well i did the unthinkable, looked in my haynes manual:homer: . forgot i even had it. And it said that you are supposed to remove the countershaft before the idler shaft. Well i couldnt figure why it wouldnt come out, it looked like it was hangin up on the front bearing, after scratching my head for a few minutes, i saw that the idler shaft was hanging into the case beyond flush. So i thought hey why not tap that in a little further and what do you know i slid the counter shaft right out. I did notice that one of the snap rings between the 3rd and 4th gear broke alittle bit. But at least i got it all apart. Thanks for all the help and holding my hand like a little biatch :D

paul

You gonna buy a rebuild kit for it? Bearings, seals and snap rings will all come with the kit. When you put the trans back together use grease on all the bearing surfaces and synchros and sliders. it just gives you a little extra insurance on reassembly that you don't gall anything on initial startup. Kind of like prelubing an engine. HaHa...when all else fails, read the directions! Your doing fine, keep us posted.

Right now i am not going to buy a full rebuild kit only for one reason. I am moving very soon and dont have access to a press, so my main goal was to get it apart clean everything, give it a paint job and replace the seals, gaskets and output,input and countershaft bearings. After i move and get access to a press i will do the whole thing. But i am def. going to replace that snap ring before i put it back together.

So here are some pics of the rebuild. I wasnt able to get a hold of a press so i couldnt pull apart the main shaft, but i replaced all the other bearings.

some more

as you can see there was some rust on the gears, but a wire brush on the angle grinder fixed that.

And some more. Also what do you guys think of the chip out of the input shaft here. I used a flap disc to smooth it out. Pics are a little out of order.

A few more....

and then they got married. My sm465 and np205. Had one more question. With everything in the tranny all put together should i be able to move the output section of the main shaft out a little. In other words should i be able to pull the main shaft apart a little?

nice did the same stuff not to long ago.... minus the 205