Assuming this is a 2004 MY. The Ford Factory service manual has a step by step with diagrams. Can't post the diagrams. If interested in getting a copy for yourself, send me a PM. I maybe able to help.
>>From Ford service manual
Engines with ratcheting timing chain tensioners
CAUTION: Timing chain procedure must be followed exactly or damage to valves and pistons will result.
CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.
NOTE: LH shown, RH similar.
Compress each tensioner plunger, using an edge of a vise.
Using a small screwdriver or pick, push back and hold the ratchet mechanism.
While holding the ratchet mechanism, push the ratchet arm back into the tensioner housing.
Install a paper clip into the hole of each tensioner housing to hold the ratchet assembly and plunger in during installation.
Remove the tensioner from the vise.
Engines with non-ratcheting timing chain tensioners
CAUTION: If one or both tensioner mounting bolts are loosened or removed, the tensioner-sealing bead must be inspected for seal integrity. Any cracks, tears, cuts or separation from the tensioner body or permanent compression of the seal bead, will require replacement of the tensioner.
Inspect the RH and LH timing chain tensioners.
Install new tensioners as necessary.
CAUTION: The timing chain procedure must be followed exactly or damage to valves and pistons will result
NOTE: LH shown, RH similar.
Compress each tensioner plunger, using a vise.
Install a retaining clip on each tensioner to hold the plunger in during installation.