Don't forget trimming the gusset on the bellhousing crossmember of the IIa chassis in order to make room for the SIII slave cylinder.
Wilsboar, you should know that on a series LR, changing the bellhousing is a little more complicated than it is on some american and other vehicles where the gearbox is an entirely self contained unit. On a series LR the bellhousing is also the front wall of the gearbox casing and retains the input shaft (primary pinion) when it is removed. You will need to take the throwout bearing mechanism/housing off, undo the retaining nut on the layshaft, and then undo and remove the four big bolts that retain the bellhousing. The layshaft constant speed gear will hang up on the bottom lip of the gearbox housing so you need to wiggle things a bit to get the bellhousing free. In the process you will likely pull the layshaft out of its rear bearing, so make sure it is properly seated before putting the new bellhousing on. When you put the IIa bell on the SIII box, make sure you use the layshaft gear from the IIa box and not the one from the III. Use a good sealer like RightStuff™ to seal the bell to the rest of the housing. When you replace the bell, stand the gearbox on end and with your finger through the hole in the layshaft gear, hold it in mesh with the input shaft gear and place it down on the main box housing. I think the big nut for the layshaft requires red loctite though I'm not sure. You'll be using the layshaft nut from the SIII box BTW. There is also a thick cone shaped washer behind the nut that IIRC is also a spacer that is supposed to take up any end float between the gear and the shaft. You can compare the thickness of the IIa gear you are putting on and the SIII gear you are removing to see if you need to change the washer. Best check the manual for that info a my meory is a bit fuzzy on that part. You'll also want to know the torque specs where they exist and oh yeah don't forget to replace the little chintzy plastic bearing between the front of the mainshaft and the rear of the input shaft. If you don't already own one, now is the time to buy or download a factory service manual.
Or, just put in the SIII box complete like SafeAir suggests.
Originally Posted by
SafeAirOne
I'd recommend taking the bellhousing, transmission and transfer case as a single unit. The only thing I'd leave is the starter (unless you need one).
That way, it's a simple job--take out the old assembly, install new SIII clutch kit (new bearing, disk and pressure plate), slap in the new assembly, hook up and bleed the new clutch slave, connect handbrake actuator and 2 shafts and you're done in 3-4 hours if you work efficiently and have no unexpected issues.
A Land Rover would never turn up to collect an Oscar. It'd be far too busy doing something important, somewhere, for someone."