Guzzi notes the Final Drive as not serviceable on all newer model Guzzi outside of the outer oil seal. That said...
Take it off, drain the oil out.
Remove the clips from the top boot.
This exposes the reaction arm.
Front boot is retained by plate and two self tapping screws.
Remove it.
Front boot is now *loose* in housing.
Undo and remove all the bolts that hold the two halves of the case together. Then using a big flat bladed screwdriver between the obvious pry points, (NOT BETWEEN THE MATING SURFACES OF THE CASE! on the case crack the sealing goo between the cases. Holding the drive side case and giving a good 'Thwack' to the center of the crown wheel/ wheel mounting boss with a dead-blow hammer will assist here. You AREN'T trying to completely separate the cases, simply break the seal. No need to be brutal!
Once the seal is broken turn the CARC over and heat the center with a heat gun. Give it a couple of minutes and you will simply be able to lift the RHS case off the CARC mechanism.
Voila!
Use a press, making sure that the crown wheel part of the CARC doesn't foul the blocks, to press out the entire CARC from the LH side case.
Bearing is now exposed.
Expensive seal is unfortunately sacrificial. Pry it out, heat case with heat gun to drop out *big* Bearing, take new big bearing out of fridge and drop into hot case and press or knock home. Re-insert and press home CARC. Apply sealant to RH side case, (I'd try Threebond 1211.) sparingly. Heat LH case a bit and drop onto RH case. Press home as gently as possible. Use bolts to pull it all back together in a crosshatch pattern. Reassemble the rest using reverse of disassembly.
The clips for the top boot can be substituted with ones from any Auto shop for attaching the boots to CV joints of FWD cars.
As an addendum to above as I've had cause to go further into one now. Note that Guzzi say that the CARC is a 'Non Serviceable' component? Well, yes and no. There is no way to easily get the pinion out of the 'Bridge' but crown wheel bearings wouldn't be too hard.
Getting the crown wheel out also requires knife edges, heat and a 30 ton press but it's doable.
Bloody difficult to get the pinion out as you can't push it, (And its bearings.) out from the back.
Both of the Pivot bearings can be replaced.
Parts 4 and 5 below
and while it may be possible to replace the actual crown wheel bearings with a bit of diligence they aren't listed as a separate part. Also because of the construction of the pinion assembly it is pretty much impossible to replace the pinion bearings or at least it would be very, very hard.
Take it off, drain the oil out.
Remove the clips from the top boot.
This exposes the reaction arm.
Front boot is retained by plate and two self tapping screws.
Remove it.
Front boot is now *loose* in housing.
Undo and remove all the bolts that hold the two halves of the case together. Then using a big flat bladed screwdriver between the obvious pry points, (NOT BETWEEN THE MATING SURFACES OF THE CASE! on the case crack the sealing goo between the cases. Holding the drive side case and giving a good 'Thwack' to the center of the crown wheel/ wheel mounting boss with a dead-blow hammer will assist here. You AREN'T trying to completely separate the cases, simply break the seal. No need to be brutal!
Once the seal is broken turn the CARC over and heat the center with a heat gun. Give it a couple of minutes and you will simply be able to lift the RHS case off the CARC mechanism.
Voila!
Use a press, making sure that the crown wheel part of the CARC doesn't foul the blocks, to press out the entire CARC from the LH side case.
Bearing is now exposed.
Expensive seal is unfortunately sacrificial. Pry it out, heat case with heat gun to drop out *big* Bearing, take new big bearing out of fridge and drop into hot case and press or knock home. Re-insert and press home CARC. Apply sealant to RH side case, (I'd try Threebond 1211.) sparingly. Heat LH case a bit and drop onto RH case. Press home as gently as possible. Use bolts to pull it all back together in a crosshatch pattern. Reassemble the rest using reverse of disassembly.
The clips for the top boot can be substituted with ones from any Auto shop for attaching the boots to CV joints of FWD cars.
As an addendum to above as I've had cause to go further into one now. Note that Guzzi say that the CARC is a 'Non Serviceable' component? Well, yes and no. There is no way to easily get the pinion out of the 'Bridge' but crown wheel bearings wouldn't be too hard.
Getting the crown wheel out also requires knife edges, heat and a 30 ton press but it's doable.
Bloody difficult to get the pinion out as you can't push it, (And its bearings.) out from the back.
Both of the Pivot bearings can be replaced.
Parts 4 and 5 below
and while it may be possible to replace the actual crown wheel bearings with a bit of diligence they aren't listed as a separate part. Also because of the construction of the pinion assembly it is pretty much impossible to replace the pinion bearings or at least it would be very, very hard.