hi
you annot replace or fix these units without removing gearbox,(stupid design),but these models are very easy to work on,and very straight forward,also you dont have to remove engine as it says in the haynes manuel,undo every thing connected to gear box,,with a jack supporting engine,then undo mounting thats under battery,then tilt engine by lowering jack until it wont lower any more,gearbox can then fit though gap,,,,,,,,,,,,,
fruastrated galaxy owner, September 2008