Crankshaft pulley and crankshaft front seal — replacement Ford F150
Replacement with timing chain cover in place
1. Disconnect the cable from the negative battery terminal (see Battery – disconnection and reconnection)
2. Remove the drivebelt(s) (see Tune-up and routine maintenance).
3. Secure the crankshaft from rotating with a strap or chain wrench (wrap a length of rag or old drivebelt around the pulley to protect it). Remove the bolt from the front of the crankshaft, then use a three-jaw puller to detach the crankshaft pulley. Clean the crankshaft nose and the seal contact surface on the pulley with RTV remover. Leave the Woodruff key in place in the crankshaft keyway.
Caution: Be sure to use an adapter between the puller screw and the nose of the crankshaft so as not to damage the threads in the crankshaft. Also, don’t use a puller with jaws that grip the outer edge of the damper. The puller must be the type that applies force to the damper hub only.
4. Carefully remove the seal from the timing chain cover with a screwdriver or seal removal tool. Be careful not to damage the cover or scratch the wall of the seal bore. If the engine has accumulated a lot of miles, apply penetrating oil to the seal-to-cover joint and allow it to soak in before attempting to remove the seal.
5. Check the seal bore and crankshaft, as well as the seal contact surface on the pulley for nicks and burrs. Position the new seal in the bore with the open end of the seal facing IN. A film of engine oil applied to the outer edge of the new seal will make installation easier.
6. Drive the seal into the bore with a seal driver or a large socket and hammer until it’s completely seated. If you’re using a socket, select one that’s the same outside diameter as the seal.
7. Apply clean engine oil to the seal contact surface of the crankshaft pulley and coat the keyway (groove) with a thin layer of RTV sealant.
8. Install the pulley on the end of the crankshaft. The keyway in the pulley bore must be aligned with the Woodruff key in the crankshaft nose. If the pulley can’t be seated by hand, tap it into place with a soft-face hammer or slip a large washer over the bolt, install the bolt and tighten it to press the pulley into place. Remove the large washer, then install the bolt and tighten it in Steps to the torque listed in this Chapter’s Specifications.
9. Install the remaining parts removed for access to the seal.
10. Start the engine and check for leaks.
Replacement with engine front cover removed
11. Remove the engine front cover (see Engine front cover – removal and installation).
12. Use a punch or screwdriver and hammer to drive the seal out of the cover from the back side. Support the cover as close to the seal bore as possible, using blocks of wood. Be careful not to distort the cover or scratch the wall of the seal bore. If the engine has accumulated a lot of miles, apply penetrating oil to the seal-to-cover joint on each side and allow it to soak in before attempting to drive the seal out.
13. Clean the bore to remove any old seal material and corrosion. Support the cover on blocks of wood and position the new seal in the bore with the open end of the seal facing IN. A film of oil applied to the outer edge of the new seal will make installation easier.
14. Drive the seal into the bore with a seal driver or a large socket and hammer until it’s completely seated. If you’re using a socket, select one that’s the same outside diameter as the seal.
15. Reinstall the engine front cover (see Engine front cover – removal and installation) and crankshaft pulley (see Step 8).
16. Start the engine and check for leaks.