Dual path question

Jexconnor

Member
Hi i have a 1963 skylark with a dual path and when i go into reverse it feels like its stuck between gears. You can actually give it some throttle (very little) and shift it into low and back down into reverse and sometimes it will unlock. Other times you can actually feel gear binding in reverse. But in neutral it rolls backwards freely. I have torn down the rear axle and determined that my problem isn't there. The gears and bearing all look great. Has anyone had this issue before?
 
Hi i have a 1963 skylark with a dual path and when i go into reverse it feels like its stuck between gears. You can actually give it some throttle (very little) and shift it into low and back down into reverse and sometimes it will unlock. Other times you can actually feel gear binding in reverse. But in neutral it rolls backwards freely. I have torn down the rear axle and determined that my problem isn't there. The gears and bearing all look great. Has anyone had this issue before?
Just curious if you have removed the linkage at the carburetor for anything. The dual path has an adjustment at the linkage at the top. I would follow the manual for correct adjustment. The dual path transmission selector gets crazing or fine cracks, this is internal of transmission next to valve body. In order to inspect it you need to remove the transmission pan. Even with cracks it will still hold, just mentioning it if you wanted to look.

Another reality is that these transmissions leak at the dipstick seal and can sometimes forget to check the fluid level because we get so used to topping it up and not fixing the leak. If you run the dual path dry the babbitted bearings inside that ride on main shaft get over heated and crack. The fine transmission particles from the damage can accumulate in the pump and clog passages resulting in erratic operation.

babbitted bearing.JPGselector fine cracks.jpgtransmission babbitt material.jpg

I would do transmission fluid change and inspect it and or send it out to get analyzed if there is a heavy amount of debris in it. If it is good it should be red and clear. As you can see in this last image it is far from that. I would do fluid check sooner than later. These images are from worst case scenario.
 
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