Hi Bill W, here's the whole procedure.
Fig. 6: Remove the driver's side ignition coil bracket bolts
Fig. 7: Remove the passenger side ignition coil bracket bolts along with the belt tensioner retaining bolts and the idler pulley retaining bolt
Fig. 8: Remove the power steering pump mounting bolts and position the pump to the side
Fig. 9: Remove the four front oil pan-to-timing cover retaining bolts
Fig. 10: Once the necessary components are removed, the timing cover bolts are accessible, remove the bolts and . . .
Fig. 11: . . . remove the cover from the engine
Fig. 12: Install the camshaft holding tool
Fig. 13: Remove the crankshaft position sensor trigger wheel from the crankshaft
Fig. 14: Remove the timing chain tensioner retaining bolts and . . .
Fig. 15: . . . remove the tensioner from the engine
Fig. 16: Remove the tensioner arm from the engine
Fig. 17: Remove the timing chain from around the camshaft pulley
Fig. 18: When removing the timing chains, rotate the crankshaft so that the camshaft key-ways are positioned as shown — 4.6L engines
Fig. 19: Remove the timing chain guide retaining bolts and remove the guides from the engine
Fig. 20: Place the tensioner into a bench vise or other suitable device and retract the plunger
Fig. 21: Using a small screwdriver or other suitable tool, push back and hold the ratchet mechanism
Fig. 22: While holding the ratchet mechanism, push the ratchet arm back into the tensioner assembly
Fig. 23: After the ratchet mechanism is retracted, place a paper clip or other suitable tool into the hole in the tensioner body to hold the ratchet arm and plunger during installation
Fig. 24: Place the tensioner assembly onto the engine and tighten the retaining bolts
Fig. 25: Remove the paper clip from the tensioner assembly
WARNING At no time, when the timing chains are removed and the cylinder heads are installed may the crankshaft or the camshaft be rotated. Severe piston and valve damage will occur.
Fig. 26: When installing the timing chains, make certain that the copper colored links (A) are aligned with the timing marks — 4.6L engine
Fig. 27: Tighten the first five front cover fasteners in the sequence shown — 4.6L engine
Fig. 28: Continue tightening the remaining fasteners in the sequence shown here — 4.6L engine
NOTE: If the engine jumped time, damage has been done to valves and possibly pistons and/or connecting rods. Any damage must be corrected before installing the timing chains.
NOTE: The crankshaft sprockets are identical. They may only be installed one way, with the tapered part of the sprockets facing each other. Ensure that the key-way and timing marks on the crankshaft sprockets are aligned.
WARNING The tensioner must be compressed slowly or damage to the internal seals will result.