F10 final drive

[stockcar123]

I'm trying to change the pinion final drive gear and I have undone all the bolts on the end of the gearbox and I telnet come out it is an f10 gearbox can you change the final on those gearboxes it is put of an Astra mk1 1300

[meritlover]

you will have to disassemble the diff preload bearings to drop the diff out the sump to allow the pinion to be changed. The other pinion is on the secondary shaft. Its very straight forward.

[garyc]

There is a guide on the guides section on how to do this.