No 4th syncro; transmission tear down

[amawds]

Sorry to revive a relatively old thread but it is the most relevant to me. I'll likely be attempting this soon. I have 4 transmissions in various states. One of them was rebuild by a shop who claimed almost every bearing that can be replaced requires the shafts to be replaced because they don't come apart. I'm seeing lots of disagreement with this statement. I won't be letting them touch my stuff anymore. I plan to disassemble a good transmission that I'll be using to go after the needle bearing between the input and output shafts. The trans has a very faint whine in all gears but 4th. In your opinion, for someone with mechanical aptitude and built his own engine but hasn't torn into a manual trans before, how easy will this be?

[ClarkTheShark]

Sorry to revive a relatively old thread but it is the most relevant to me. I'll likely be attempting this soon. I have 4 transmissions in various states. One of them was rebuild by a shop who claimed almost every bearing that can be replaced requires the shafts to be replaced because they don't come apart. I'm seeing lots of disagreement with this statement. I won't be letting them touch my stuff anymore. I plan to disassemble a good transmission that I'll be using to go after the needle bearing between the input and output shafts. The trans has a very faint whine in all gears but 4th. In your opinion, for someone with mechanical aptitude and built his own engine but hasn't torn into a manual trans before, how easy will this be?

Dont be scared, you got it.

[wizard124]

Sorry to revive a relatively old thread but it is the most relevant to me. I'll likely be attempting this soon. I have 4 transmissions in various states. One of them was rebuild by a shop who claimed almost every bearing that can be replaced requires the shafts to be replaced because they don't come apart. I'm seeing lots of disagreement with this statement. I won't be letting them touch my stuff anymore. I plan to disassemble a good transmission that I'll be using to go after the needle bearing between the input and output shafts. The trans has a very faint whine in all gears but 4th. In your opinion, for someone with mechanical aptitude and built his own engine but hasn't torn into a manual trans before, how easy will this be?

Go back a couple of posts and read my tips summary. Definately need a manual and do the teardown in the specified sequential steps.
That needle bearing is the cheapest bearing in the tranny. I would say buy it rather than take the effort to tear down the other transmission. Be sure to carefully clean and inspect the other bearings, replace if in doubt.

Warren

[amawds]

Oh yeah, if I'm going in to repair something I almost always replace with new. This is going into a car with an 8000 dollar paint job, going cheap now would be idiotic.