Re: 1940 Manual OD Trans Synchro

Posted by Ross On 2015/6/23 5:19:14

Well, that is certainly unique. When running in 3d, the synchro ring and the dog shifter ring are both engaged on the input shaft and the drive is straight across that joint between the input shaft and the mainshaft. So,I am at a loss as to how there is enough relative motion to make enough heat to "braze" the synchro ring to the input shaft (since the synchro is bronze faced.

I have seen trannies with heavy damage caused by end play issues. Failure of the input shaft or main shaft lock ring would do that. I have also seen heavy damage caused by the omission of the round-section spacer ring that is supposed to be slid onto the end of the mainshaft after the synchro assy is installed.