jenns garage slave

i am replacing the forward drive hub friction disks in the transfer case of a 1994 4runner with 3.7-V6,i am trying to find spec's for end play gap,........ the transmission only moves in 4L,but up shifts and has reverse,...just no high gear i pulled transfer case and forward hub was rainbowed,..it looks like somone replaced friction disks after it burnt but a couple are burned now,...the friction plates have a good 1/4 inch travel on end play,..i think its too much