If I remember correctly they have a reversing valve that causes it to go back. If something is causing it to hang up then it might produce your symptoms. I would clean it up, oil it and try it before installing it again.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!