Transmission Bushing - It's Supposed to be Loose!
If you spend some time looking for a source of
noise/clunking/vibration under your YJ, you may discover a
pair of loose bushings attached to the transmission where it
mounts to the skid plate/cross member. Looking from the
front of the Jeep, these two bushings sit to the right of
the rectangular rubber block which is actually the
transmission mount. This block should NOT be loose. The two
bushings provide a cushion for a kind of an outrigger which
limits the torque-twist which may occur in the tranny. These
two bushings will have some play above and below the
"outrigger". They are NOT supposed to be tight. I don't
want to explain how I know this.