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Home >> Chrysler >> 2008 >> Pacifica V6-4.0L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Head Assembly >> Service and Repair >> Removal and Replacement >> Cylinder Head - Installation

Cylinder Head - Installation







INSTALLATION - CYLINDER HEAD(S)

RIGHT CYLINDER HEAD

CAUTION: THE CYLINDER HEAD GASKETS ARE NOT INTERCHANGEABLE BETWEEN CYLINDER HEADS AND ARE CLEARLY MARKED RIGHT OR LEFT.

The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced..

Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt must be replaced.





CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use ONLY a wooden or plastic scraper Engine Gasket Surface Preparation

1. Clean sealing surfaces of cylinder head and block.

CAUTION: Ensure that the correct head gaskets are used and are oriented correctly on cylinder block.

2. Install head gasket over locating dowels. Ensure the gasket is installed on the correct side of engine.

NOTE: Before installing the cylinder head bolts, lubricate the threads with engine oil.

3. Insert the front four cylinder head bolts into the cylinder head. Pull the bolts up to the top of their travel and retain with rubber bands.
4. Install the cylinder head over locating dowels and finger tighten the head bolts.
5. Tighten the cylinder head bolts in the sequence shown in. Using the 4 step torque-turn method, tighten according to the following torque values:
- Step 1: All to 61 Nm (45 ft. lbs.)
- Step 2: All to 88 Nm (65 ft. lbs.)
- Step 3: All (again) to 88 Nm (65 ft. lbs.)
- Step 4: + 90° Turn Do not use a torque wrench for this step.





6. Bolt torque after 90° turn should be over 122 Nm (90 ft. lbs.) in the tightening direction. If not, replace the bolt.
7. Install the inner timing cover to cylinder head bolts. Tighten bolts to 54 Nm (40 lbs.ft.).
8. Install camshaft sprocket. Counterhold the camshaft sprocket gear and tighten the camshaft sprocket bolt to 102 Nm plus a 1/4 turn (75 lbs. ft. plus a 1/4 turn).Timing Belt & Sprockets - Installation.
9. Install the rear camshaft thrust plate.
10. Rotate the camshaft gear to it's alignment mark and check the left camshaft gear and crankshaft gear timing alignment marks.
11. Install the timing belt and tensionerTiming Belt & Sprockets - Installation.
12. Install the timing belt outer cover Timing Cover - Installation.
13. Install the power steering reservoir.
14. Install the vibration damper Vibration Damper - Installation.
15. Install the upper engine mount Upper Engine Mount.
16. Install the accessory drive belt tensioner.
17. Install the accessory drive belt idler pulley.
18. Install the right exhaust manifold Exhaust Manifold - Installation.
19. Install the exhaust cross over pipe Exhaust Manifold - Installation.
20. Install the catalytic converter and exhaust system.
21. Connect both oxygen sensors.
22. Lower the vehicle.
23. Install the right rocker arm assembly.
24. Install the right cylinder head cover and ground strap.
25. Install lower intake manifold Intake Manifold - Installation.
26. Install the fuel rail.
27. Install the upper intake manifold Intake Manifold - Installation.
28. Install the air cleaner element housing Air Cleaner Housing - Installation.
29. Install the engine cover.
30. Fill the coolant system.
31. Connect the negative battery cable.

LEFT CYLINDER HEAD

CAUTION: THE CYLINDER HEAD GASKETS ARE NOT INTERCHANGEABLE BETWEEN CYLINDER HEADS AND ARE CLEARLY MARKED RIGHT OR LEFT.

The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down the bolts must be replaced..

Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt must be replaced.





CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use ONLY a wooden or plastic scraper Engine Gasket Surface Preparation

1. Clean sealing surfaces of cylinder head and block.

CAUTION: Ensure that the correct head gaskets are used and are oriented correctly on cylinder block.

2. Install head gasket over locating dowels. Ensure the gasket is installed on the correct side of engine.

NOTE: Before installing the cylinder head bolts, lubricate the threads with engine oil.

3. Install the cylinder head over locating dowels, insert and finger tighten the head bolts.
4. Tighten the cylinder head bolts in the sequence shown in. Using the 4 step torque-turn method, tighten according to the following torque values:
- Step 1: All to 61 Nm (45 ft. lbs.)
- Step 2: All to 88 Nm (65 ft. lbs.)
- Step 3: All (again) to 88 Nm (65 ft. lbs.)
- Step 4: + 90° Turn Do not use a torque wrench for this step.





5. Bolt torque after 90° turn should be over 122 Nm (90 ft. lbs.) in the tightening direction. If not, replace the bolt.
6. Install the inner timing cover to cylinder head bolts. Tighten bolts to 54 Nm (40 lbs.ft.).
7. Install camshaft sprocket. Counterhold the camshaft sprocket gear and tighten the camshaft sprocket bolt to 115 Nm plus a 1/4 turn (85 lbs. ft. plus a 1/4 turn).Timing Belt & Sprockets - Installation.
8. Install the rear camshaft thrust plate.
9. Rotate the camshaft gear to it's alignment mark and check the right camshaft gear and crankshaft gear timing alignment marks.
10. Install the timing belt and tensionerTiming Belt & Sprockets - Installation.
11. Install the timing belt front cover Timing Cover - Installation.
12. Install the vibration damper Vibration Damper - Installation.
13. Install the upper engine mount Upper Engine Mount.
14. Install the accessory drive belt tensioner.
15. Install the accessory drive belt idler pulley.
16. Install the left exhaust manifold Exhaust Manifold - Installation.
17. Install the exhaust cross over pipe Exhaust Manifold - Installation.
18. Install the left rocker arm assembly.
19. Install the left cylinder head cover and ground strap.
20. Install lower intake manifold Intake Manifold - Installation.
21. Install the fuel rail.
22. Install the upper intake manifold Intake Manifold - Installation.
23. Install the radiator cooling fan assembly Radiator Fan - Installation.
24. Install the radiator core support.
25. Install the radiator close out panel.
26. Install the air cleaner element housing Air Cleaner Housing - Installation.
27. Install the engine cover.
28. Fill the coolant system.
29. Connect the negative battery cable.

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