F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
17. Position the RH timing chain tensioner arm on the dowel pin and install the RH timing chain tensioner.
18. Remove the retaining clip from the RH timing chain tensioner.
19. Remove the special tool.
20. As a post-check, verify correct alignment of all timing marks.