Input Shaft Removal 915 Trans

wrongwaywayne · 03-30-2004, 08:30 PM

I cant seem to remove the input/pinion shafts omn my 915 trans. Ive followed the directions in Haynes with no success.

What could be binding the input shaft? I've tried some pressure but afraid to pry too much. Pinion is loose. Forks not binding it. All retaing plates nuts removed.

Clutch and diff are still attached to the back of the engine.

Any Ideas

wrongwaywayne · 03-31-2004, 07:01 AM

bump

john walker's workshop · 03-31-2004, 07:06 AM

shifting the mainshaft into 3rd gear is required before the shafts and shift rails will come out together. you're making it hard on yourself keeping the trans bolted to the engine, and you will be fighting the mainshaft splines into the clutch disc on reassembly. 4 nuts and it's on the bench.

UTKarmann_Ghia · 03-31-2004, 07:10 AM

Dont pry it! Neither of the shafts require prying to remove them. I followed the Bently on the assembly/disassembly and the came right out together. I did have to loosen the 1-2 pinch fork, then wiggle up and down and pull...comes out in one, big clump.

Also, there are many threads on tranny disassembly in this forum, so do search on 915 rebuild and you should have many hits. I just finished rebuilding mine and I can tell you one thing for sure: if you're not sure about something on the reassembly, STOP and ask. It's alot easier than redoing your work. Ask me how I know :

:

wrongwaywayne · 07:38 AM

Thanks for pointing me in the right direction guys. I will give it another try with 3rd gear idea and then if that fails then remove the whole thing. I thought about removing the trans/diff but I don't like to remove anymore nuts and bolts than I have to and then there's that lining up the clutch thing. How much does the tranny weigh? I dont have an engine crane - just a floor jack. I assume that centering the clutch will require a special tool.

Thanks again.

Rot 911 · 03-31-2004, 07:42 AM

Listen to JW and separate the tranny from the engine. The tranny only weighs a hundred pounds or so. I know I can lift it up onto a workbench and I don't consider myself to be overly strong. The clutch alignment tool is only $4-$5 or so, but even a ratchet handle can line things up well enough to get things reconnected. You could have the tranny separated in the time it took for me to write and post this.

wrongwaywayne · 03-31-2004, 07:53 AM

Off it comes then.

john walker's workshop · 03-31-2004, 08:32 AM

put it bellhousing down on a bench, remove the two side detents, shift into 3rd, leave the forks and shafts alone. grab the works with both hands, and wiggle a bit as you pull up. read all the old posts that you can find on rebuilding one, as well as the all important detent positions when you go to reassemble. everyone screws up the detent positions, there are two to worry about. don't do it too.

wrongwaywayne · 03-31-2004, 09:21 AM

Its been awhile since I rebuilt a transmission. The last one was my 73 Triumph Spitfire. I lost reverse!!! This one the 1st syncro ring went. I lost reverse and 1st. Lots of damage this time, not just a reverse gear!