That’s how I have done it on my 2.4 JTD 10V
Lift the car and remove driver side front wheel.
Remove both upper timing belt covers.
Remove Top engine mount and steady bar. (TX55 required)
Remove V-belt and front V-belt idler pulley.
Remove lower timing belt cover.
Remove crank pulley.
To remove the crank pulley;
Use a T-bar with a 19mm nut to hold the crank in position.
Now undo the 6 bolts that hold the crank pulley.
With the T-Bar back on the 19mm crank bolt, turn the engine clock wise till the only timing mark on the camshaft pulley line up.
Loosen the nut (13mm spanner) from the automatic cam belt tensioner.
Remove the old belt.
Now remove the old tensioner and the old idler pulley (Idler is 24mm socket).
Fit new tensioner and new idler to the engine.
Tighten the idler pulley fully, but leave the 13mm nut of the automatic tensioner lose.
The new timing belt has 3 markings;
First the directional markers.
The 3 arrows must point to the “Right” ,clock wise direction.
You will find 2 yellow lines on the timing belt.
The Fist line is the position for the cam wheel timing mark, the second is the position for the crank shaft timing mark.
Start the fitting of the new belt at the crank shaft, and place the second yellow line at the grove on the crank shaft pulley.
The timing mark on the crank shaft is about the 8.30 a clock position.
Now fit the timing belt in anti clock wise order.
Crank shaft pulley, idler pulley, cam shaft pulley, Diesel pump pulley, Water pump pulley, automatic cam belt tensioner.
If all is timed correctly, the second yellow line will match the cam wheel timing mark.
Now push the automatic tensioner up as tight as you can (to remove all slack from the belt.)
Tighten the 13mm nut of the tensioner.
Re-check that the timing marks still align.
Crank pulley at 8.30 a clock, cam pulley at 12.30 a clock position.
Now turn the engine 2 full revolutions (clock wise).
The automatic tensioner has a pointer and a indent (triangle OR round 2mm diameter).
Now loosen the 13mm nut and lever the automatic tensioner until the pointer aligns with the indent.
Tighten the 13mm nut to 25 Newton meter.
Re-fit all parts.
Hope that helps someone