Cylinder Head - RH

Cylinder Head - RH













Removal

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages, coolant passages or the oil pan may cause engine failure.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Remove the lower intake manifold. For additional information, refer to Lower Intake Manifold Lower Intake Manifold.

3. Remove the RH exhaust manifold. For additional information, refer to Exhaust Manifold - RH Exhaust Manifold.

4. Remove the coolant pump housing. For additional information, refer to Engine Cooling Coolant Pump Housing.

5. Remove the timing drive components. For additional information, refer to Timing Drive Components Removal and Replacement.

6. NOTICE: The camshafts must be in the neutral position before removing the bearing caps or damage to the engine may occur.

Verify the RH camshafts are in the neutral position.





7. NOTICE: Do not allow the camshaft to rotate from the neutral position while removing the camshaft phaser and sprocket or damage to the engine may occur.

NOTE: Install a 3/8-in ratchet and extension into the D-slot on the rear of the intake camshaft to hold the camshaft in place for removal of the camshaft phaser and sprocket bolts.

Remove the 3 bolts and the RH camshaft phaser and sprocket.





8. NOTICE: Cylinder head camshaft bearing caps must be assembled in their original positions. Some engines have factory markings on the camshaft bearing caps (as shown in illustration). Engines that do not have the factory markings must be marked for correct position and orientation prior to removal. Failure to install the camshaft bearing caps in their original positions may result in severe engine damage.

If necessary, mark the camshaft bearing cap position and orientation as shown in the illustration.





9. NOTICE: After loosening all of the camshaft bearing cap bolts, remove the camshaft bearing thrust caps (5R and 1R) first, or damage to the thrust caps may occur.

NOTE: Make sure the camshaft bearing caps are marked as instructed in the previous step.

Loosen the bolts evenly in the sequence shown.

1. Remove the camshaft bearing thrust caps (5R and 1R).

2. Remove the remaining camshaft bearing caps.

3. Remove the camshafts from the cylinder head.





10. NOTICE: The camshaft roller followers must be installed in their original positions. If not reassembled in their original positions, severe engine damage may occur.

Remove the camshaft roller followers.

11. NOTICE: The hydraulic lash adjusters must be installed in their original positions. If not reassembled in their original positions, severe engine damage may occur.

Remove the hydraulic lash adjusters.

12. NOTE: New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.

Remove the bolts in the sequence shown.

- Remove the cylinder head.

- Discard the bolts and gasket.





13. Support the cylinder head on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion. For additional information, refer to Engine System - General Information Cylinder Head Distortion Cylinder Block Distortion.

Installation

1. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths.

Use a plastic scraping tool to remove all traces of the head gasket.

- Clean all surfaces with metal surface prep.

2. Position a new gasket and the cylinder head.

3. NOTE: New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.

Install the bolts and tighten in 6 stages in the sequence shown.

- Stage 1: Tighten to 40 Nm (30 lb-ft).

- Stage 2: Tighten 90 degrees.

- Stage 3: Loosen one full turn.

- Stage 4: Tighten to 40 Nm (30 lb-ft).

- Stage 5: Tighten 90 degrees.

- Stage 6: Tighten 90 degrees.





4. NOTICE: The hydraulic lash adjusters must be installed in their original positions. If not reassembled in their original positions, severe engine damage may occur.

Install the hydraulic lash adjusters.

- Lubricate the hydraulic lash adjusters with clean engine oil.

5. NOTICE: The camshaft roller followers must be installed in their original positions. If not reassembled in their original positions, severe engine damage may occur.

Install the camshaft roller followers.

- Lubricate the camshaft roller followers with clean engine oil.

6. Position the RH camshaft phaser and sprocket onto the intake camshaft.
- Install the 3 bolts finger-tight.

7. Lubricate the RH camshafts with clean engine oil and carefully position the camshafts onto the cylinder head.
- Align the RH camshafts as shown.





8. NOTICE: Cylinder head camshaft journal caps and cylinder heads are numbered to verify that they are assembled in their original positions. If not reassembled in their original positions, severe engine damage may occur.

NOTICE: Do not install the camshaft journal thrust caps until all of the camshaft bearing caps have been installed or damage to the thrust caps can occur.

NOTE: Lubricate the bearing surfaces of the RH camshaft bearing caps with clean engine oil.

Install the camshaft bearing caps.

- Loosely install the bolts.





9. NOTE: Lubricate the bearing surfaces of the RH camshaft bearing thrust caps with clean engine oil.

Install the camshaft bearing thrust caps.

- Loosely install the bolts.





10. NOTE: Make sure to tighten the camshaft bearing cap bolts in sequence in 2 stages.

Tighten the RH camshaft bearing cap bolts in the sequence shown in 2 stages.

- Stage 1: Tighten to 10 Nm (89 lb-in).

- Stage 2: Individually loosen and then tighten each camshaft bearing cap to 10 Nm (89 lb-in).





11. NOTICE: Do not allow the camshaft to rotate from the neutral position while tightening the camshaft phaser and sprocket bolts or damage to the engine may occur.

NOTE: Install a 3/8-in ratchet and extension into the D-slot on the rear of the intake camshaft to hold the camshaft in place for tightening of the camshaft phaser and sprocket bolts.

Tighten the 3 RH camshaft phaser and sprocket bolts to 18 Nm (159 lb-in).





12. Install the timing drive components. For additional information, refer to Timing Drive Components Removal and Replacement.

13. Install the coolant pump housing. For additional information, refer to Engine Cooling Coolant Pump Housing.

14. Install the RH exhaust manifold. For additional information, refer to Exhaust Manifold - RH Exhaust Manifold.

15. Install the lower intake manifold. For additional information, refer to Lower Intake Manifold Lower Intake Manifold.