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Terry,OH · 09-05-2019, 07:02 AM

That syncro hub is supposed to move back and forth on the main shaft smoothly. If it did not and it stuck toward the 2nd gear then when shifted into 3rd the sleeve could uncover the syncro balls allowing them to fall out. From your photo it shows the hub is too far rearward (toward 2nd gear). The hub you have has the brass syncro rings built in to the hub. They are not visible unless the transmission is disassembled.
The hub is the central part of the syncro on the main shaft 7105, the syncro sleeve is the outer part that covers the balls 7106.

09-05-2019, 07:02 AM	#10
Terry,OH Senior Member Join Date: May 2010 Posts: 4,751	Re: Trany Problems That syncro hub is supposed to move back and forth on the main shaft smoothly. If it did not and it stuck toward the 2nd gear then when shifted into 3rd the sleeve could uncover the syncro balls allowing them to fall out. From your photo it shows the hub is too far rearward (toward 2nd gear). The hub you have has the brass syncro rings built in to the hub. They are not visible unless the transmission is disassembled. The hub is the central part of the syncro on the main shaft 7105, the syncro sleeve is the outer part that covers the balls 7106. Last edited by Terry,OH; 09-05-2019 at 06:20 PM.