Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation LDK

1. Install the hydraulic lash adjusters (1) into their bores in the cylinder head. Apply lubricant to the lash adjusters, refer to Adhesives, Fluids, Lubricants, and Sealers.



2. Lubricate the valve tips (1), refer to Adhesives, Fluids, Lubricants, and Sealers.




Note: Used roller followers must be returned to the original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

3. Position the roller followers (1) on the tip of the valve stem and on the lash adjuster. Apply lubricant to the followers, refer to Adhesives, Fluids, Lubricants, and Sealers.




Note: The engine is timed top dead center exhaust stroke.

4. When installing the camshafts, ensure the exhaust camshaft notch is in the 7 o’clock position (1). The number 1 piston should be at top dead center (TDC), crankshaft key at 12 o’clock.



5. Set the exhaust camshaft (1) on top of the roller followers in the camshaft bearing journals. Lubricate the camshaft, refer to Adhesives, Fluids, Lubricants, and Sealers.



6. Rotate the oil seal in the groove of the number one camshaft journal so the split line (1) is at approximately the 12 o’clock position before installing the camshaft caps.



7. Install the exhaust camshaft with the notch on the front (1) at approximately the 7 o'clock position.



8. Install the camshaft caps (1) and hand start the camshaft cap bolts (2).

Caution: Refer to Fastener Caution in the Preface section.

9. Lubricate and tighten the camshaft cap bolts in increments of 3 turns until they are seated. Tighten the camshaft cap bolts to 10 N·m (89 lb in).




Note: It is critical during installation to ensure the bearing rear cap and cylinder head alignment is correct and the mating surfaces are flush.

Note: Apply the sealer to all locations centrally locating the bead on the rail. Run bead to within 2.0 mm of the end points (a) shown. Where the cap ends on the perimeter rail, extend bead approximately 2.0 mm beyond edge of cap.

10. Apply a 2.5 mm bead of sealer to the cylinder head at the exhaust camshaft bearing rear cap mating surface. Refer to Adhesives, Fluids, Lubricants, and Sealers.
11. Install the exhaust camshaft bearing rear cap and bolts. Tighten the bolts to 10 N·m (89 lb in).

1. Install the hydraulic lash adjusters (1) into their bores in the cylinder head.
2. Lubricate the hydraulic lash adjusters, refer to Adhesives, Fluids, Lubricants, and Sealers.



3. Lubricate the valve tips (1).




Note: Used roller followers must be returned to the original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

4. Position the roller followers (1) on the tip of the valve stem and on the lash adjuster. Lubricate the roller followers, refer to Adhesives, Fluids, Lubricants, and Sealers.




Note: The engine is timed top dead center exhaust stroke.

5. When installing the camshafts, ensure the exhaust camshaft notch is in the 7 o’clock position (1). The number 1 piston should be at top dead center (TDC), crankshaft key at 12 o’clock.



6. Set the intake camshaft (1) on top of the roller followers in the camshaft bearing journals. Lubricate the camshaft, refer to Adhesives, Fluids, Lubricants, and Sealers.



7. Rotate the oil seal in the groove of the number one camshaft journal so the split line (1) is at approximately the 12:00 position before installing the camshaft caps.




Note: The number 1 cylinder must be at top dead center (TDC), crankshaft keyway at the 12 o'clock position.

8. Install the intake camshaft with the notch on the front at approximately the 5 o'clock position (1).



9. Install the camshaft caps (1) and hand start the camshaft cap bolts.
10. Tighten the camshaft cap bolts in increments of 3 turns until they are seated. Tighten the camshaft caps to 10 N·m (89 lb in).




Note: It is critical during installation to ensure the bearing rear cap and cylinder head alignment is correct and the mating surfaces are flush.

Note: Apply the sealer to all locations centrally locating the bead on the rail. Run bead to within 4.0 mm of the end points (a) shown. Where the cap ends on the perimeter rail, extend bead approximately 4.0 mm beyond edge of cap.

11. Apply a 3.5 mm bead of sealer to the cylinder head at the intake camshaft bearing rear cap mating surface. Refer to Adhesives, Fluids, Lubricants, and Sealers.
12. Install the intake camshaft bearing rear cap and tighten the bolts to 10 N·m (89 lb in).



13. Install the rear cylinder head opening plate (1) and tighten the bolts to 10 N·m (89 lb in).