I’m about to rebuild the Getrag. This is the first transmission that I am going to rebuild. I have had to reseal one before but not a full rebuild. Having read the rebuild manual I have a couple questions that I hope I could get some clarification on.
The transmission has the following issues:
-Shifter vibrates violently in 3rd gear but no others.
-synchronizer noise/difficult to up shift from 1st to 2nd
-synchronizer noise/difficult to up shift into 3rd gear
-synchronizer noise/difficult to downshift from 3rd to 2nd
-synchronizer noise/difficult to downshift from 2nd to 1st
-One time on a steep incline the trans popped out of 1st gear. I had kind of “stepped on it” it has not happened since, however I haven’t tried to replicate it.
Basically I’ve been babying it while collecting parts/getting ready to rebuild it. I spoke with Craig at Zumbrota who folks seem to recommend. I described the issues I have been having with the transmission and he recommended getting the rebuild kit with bearings and synchronizing rings, and a shim kit; he advised the needle bearing are probably fine. We discussed a few other parts (I believe synchro assemblies) but I wanted to wait till I got it apart so I don’t buy things I don’t need.
The rebuild manual doesn’t seem to go very in depth about inspecting the old parts. If anyone could advise me of what I should be looking for in case I need to replace anything else it would be great.
What should I look for when inspecting the:
- Input shaft/race?
- Counter shaft?
- Counter gear?
- Main shaft?
- Gears?
- Synchronizer assemblies?
- Shift cover assembly, and forks?
I’d rather not have to pull it back out after finishing because of leaks. Is it a better idea to use RTV instead of the gaskets?
The rebuild manual says to replace snap rings and reverse idler shaft pins Is this necessary?
Also if there is any other words of advice any of you could impart I would appreciate it.
Thanks
Mike