Hi Dave
Sorry for the delay but here goes,
1st job remove the alt and pas belts
Then you need to undo the crankshaft pulley bolt,if you are working alone the best way to do this is to get no1 & 4 cylinders on TDC ,you can do this by removing no 1 spark plug and using a torch you will see the piston coming to the top of the bore,as it reaches the top look at the flywheel timing mark which is next to the clutch folk.
Next to this hole you will see 4 lines in the bellhousing,the 2nd line up is tdc.
On the front of the engine next to the bellhousing near to the sump you will see a male torx bolt screwed in to the block ,remove this and insert a 8mm drill bit which goes into a drilling in the crankshaft(you may have to turn the crank whilst pushing the drill bit in to locate it) then confirm the machined slot on the flywheel is in line with the 2nd mark from the bottom in the timing hole.
the crank bolt can now be undone and the timing covers can be remove which will be held on with 10mm bolts or T30Torx bolts.
Once these are off you can see the camshaft sprocket which could have a few marks on it but the only one we are interested in is the one that goes to peak of sprocket teeth which by this stage should be lined up with thae centre web of the rocker cover, if it is'nt it will be pointing down in which case you could turn the crank 360degrees which will turn the cam 180 degrees or you could just make your own mark with tipex in line with the centre web of the rocker cover.
You will find the tensioner on the back run of the belt which is slackened of using a 13mm spanner just enough to let it come free.
Now remove the belt and check the water pump for excessive play and the tensioner for smooth rotation. :bowdown: :bowdown:
Next step refit the belt starting on the crank then to the water pump and the cam ensuring there is no slack as you go and finally round the tensioner where the slack should be

:angry: .
using a screwdriver lever the tensioner to apply tension to the belt and lock up the 13mm nut on it.
Check your cam is still in line and the crank also then remove your drill bit and rotate the engine a couple of revs by hand and recheck marks and tension
If the o/s of the car is jacked up put it in 4th gear and jerk the road wheel in a forward direction to save yuo putting the crank bolt back in for the pevious stage :D :D .
Then just put everything back on and of you go

:idea:
Recommend you replace the other belts at same time.
If any of this is as clear as mud just ask and i will go into more detail