904 Transmission Stopped Going Into Gear
I verified that the bearing was properly seated on the output shaft and that the recess for the bearing in the extension housing was clean. See pictures.
I also took everything apart again and put the output shaft into the extension housing on its own making sure the bearing fully seated. Very hard to see but the bearing feels seated, I gently tapped the shaft with a rubber mallet to make sure nothing was loose. Picture below
I then put the shaft/ext housing sub assembly onto the main trans housing (while it was empty of all other parts). I made sure the shaft sealing rings properly slid into the shaft support and then carefully snugged the bolts in a cross pattern to full torque.
I then measured the end play on the front of the output shaft in this configuration and got .035". Anyone have any thoughts on that number?
I then started to reinstall internal parts.
When I got to the snap ring I made some measurements below:
The original snap ring is .050" thick. I am reusing it.
After the snap ring was installed I measured the gap under the snap ring. This was .013". Thoughts?
I installed the shaft thrust washer, front drums and pump (no frictions in either drum, no pump oring, no forward band) and began to torque the pump bolts. As before, the input shaft stopped spinning freely and had no endplay when the pump bolts were tightened.
I then removed the shaft thrust washer and reinstalled everything else and tightened the pump bolts all to spec in a cross patter and.....the input shaft spins freely!
For the record, I did previously try assembling everything with no shaft thrust washer to see if that was the problem and everything still got bound up, so I think I must have had something (ext hsg bearing?) not quite right and have now gotten it all right by taking everything apart and reassembling.
This is the drum engagement I get with the configuration I described above (no shaft thrust washer). Looks good to me.
The input shaft spins nice and easy by hand and I have .074" of endplay.
I measured my original thrust washer and it is .081"
Is this the cause of all my pain?
The input shaft endplay with no thrust washer is .074" and I am trying to put a .081" thrust washer between the shafts?
Is the solution just to get a thinner thrust washer? I would be very thrilled if that was my problem.
I verified that the bearing was properly seated on the output shaft and that the recess for the bearing in the extension housing was clean. See pictures.
I also took everything apart again and put the output shaft into the extension housing on its own making sure the bearing fully seated. Very hard to see but the bearing feels seated, I gently tapped the shaft with a rubber mallet to make sure nothing was loose. Picture below
I then put the shaft/ext housing sub assembly onto the main trans housing (while it was empty of all other parts). I made sure the shaft sealing rings properly slid into the shaft support and then carefully snugged the bolts in a cross pattern to full torque.
I then measured the end play on the front of the output shaft in this configuration and got .035". Anyone have any thoughts on that number?
I then started to reinstall internal parts.
When I got to the snap ring I made some measurements below:
The original snap ring is .050" thick. I am reusing it.
After the snap ring was installed I measured the gap under the snap ring. This was .013". Thoughts?
I installed the shaft thrust washer, front drums and pump (no frictions in either drum, no pump oring, no forward band) and began to torque the pump bolts. As before, the input shaft stopped spinning freely and had no endplay when the pump bolts were tightened.
I then removed the shaft thrust washer and reinstalled everything else and tightened the pump bolts all to spec in a cross patter and.....the input shaft spins freely!
For the record, I did previously try assembling everything with no shaft thrust washer to see if that was the problem and everything still got bound up, so I think I must have had something (ext hsg bearing?) not quite right and have now gotten it all right by taking everything apart and reassembling.
This is the drum engagement I get with the configuration I described above (no shaft thrust washer). Looks good to me.
The input shaft spins nice and easy by hand and I have .074" of endplay.
I measured my original thrust washer and it is .081"
Is this the cause of all my pain?
The input shaft endplay with no thrust washer is .074" and I am trying to put a .081" thrust washer between the shafts?
Is the solution just to get a thinner thrust washer? I would be very thrilled if that was my problem.
