4.1 Try to shake the gearbox mount with a large screwdriver
1. Insert a large screwdriver or crowbar between the mount and gearbox bracket and try to wiggle the mount (4.1).
2. The bracket must not move away from the mount. If not, replace the mount.
3. To replace the mount, install a jack under the gearbox, unscrew the nut and remove the through bolt, and also unscrew the bolts securing the bracket to the gearbox, then remove the mount.
4. Installation is carried out in the reverse order of removal.