Left Cylinder Head

Fig 1: Check for Stretched Bolts

Courtesy of DAIMLERCHRYSLER CORP.

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. See  Figure . 

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. See Fig 1.

Fig 2: Cylinder Head Bolt Tightening Sequence

Courtesy of DAIMLERCHRYSLER CORP.

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 Fig 2. Using the 4 step torque-turn method, tighten according to the following torque values:
   1. Step 1: All to 61 N.m (45 ft. lbs.)
   2. Step 2: All to 88 N.m (65 ft. lbs.)
   3. Step 3: All (again) to 88 N.m (65 ft. lbs.)
   4. Step 4: + 90° Turn Do not use a torque wrench for this step. 
5. Bolt torque after 90° turn should be over 122 N.m (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 N.m (40 lbs. ft.).
   Fig 3: Left Camshaft Sprocket

   Courtesy of DAIMLERCHRYSLER CORP.
7. Install camshaft sprocket. See Fig 3. Counter-hold the camshaft sprocket gear and tighten the camshaft sprocket bolt to 102 N.m plus a 1/4 turn (75 lbs. ft. plus a 1/4 turn)
   Fig 4: Camshaft Thrust Plate

   Courtesy of DAIMLERCHRYSLER CORP.

   1 - CAMSHAFT THRUST PLATE

   2 - BOLT

   3 - O-RING

8. Install the rear camshaft thrust plate (1) and seal (3). See Fig 4.
   Fig 5: Identifying Timing Gear Components

   Courtesy of DAIMLERCHRYSLER CORP.

   1 - RIGHT CAMSHAFT GEAR ALIGNMENT MARK	7 - LEFT CAMSHAFT GEAR
   2 - RIGHT CAMSHAFT GEAR	8 - LEFT CAMSHAFT GEAR ALIGNMENT MARK
   3 - CYLINDER HEAD TO INNER TIMING BELT COVER BOLTS - RIGHT	9 - CRANKSHAFT GEAR ALIGNMENT MARK
   4 - TIMING BELT	10 - CRANKSHAFT GEAR
   5 - WATER PUMP PULLEY	11 - TIMING BELT TENSIONER PULLEY
   6 - CYLINDER HEAD TO INNER TIMING BELT COVER BOLTS - LEFT	12 - TIMING BELT TENSIONER

9. Rotate the camshaft gear (7) to it's alignment mark (8) and check the right camshaft gear (1) and crankshaft gear timing (9) alignment marks. See Fig 5.
10. Install the timing belt (4) and tensioner (11). (Refer to ENGINE/VALVE TIMING/TIMING BELT/CHAIN AND SPROCKETS - INSTALLATION)  .
    Fig 6: Front Timing Belt Cover

    Courtesy of DAIMLERCHRYSLER CORP.

    1 - FRONT TIMING BELT COVER

    2 - ENGINE OIL FILTER

    3 - VIBRATION DAMPER

    4 - TIMING BELT TENSIONER

11. Install the timing belt front cover (1) (Refer to ENGINE/VALVE TIMING/TIMING BELT/CHAIN COVER(S)  - INSTALLATION).
    Fig 7: Identifying Serpentine Accessory Drive Belt

    Courtesy of DAIMLERCHRYSLER CORP.

    1 - DRIVE BELT TENSIONER

    2 - POWER STEERING PULLEY

    3 - AIR CONDITIONING COMPRESSOR

    4 - CRANKSHAFT DAMPER

    5 - GENERATOR

    6 - DRIVE BELT

12. Install the accessory drive belt tensioner (1). See Fig 7.
13. Install the accessory drive belt idler pulley. See Fig 7.
14. Install the vibration damper (3). See Fig 7(Refer to ENGINE/ENGINE BLOCK/VIBRATION DAMPER - INSTALLATION)  .
    Fig 8: Left Exhaust Pipe To Manifold Union

    Courtesy of DAIMLERCHRYSLER CORP.

    1 - HO2S #1

    2 - EXHAUST UNION

    3 - HO2S-#2

15. Install the left exhaust manifold. (Refer to ENGINE/MANIFOLDS/EXHAUST MANIFOLD - INSTALLATION)  .
16. Raise the vehicle.
17. Connect the left exhaust pipe (2) and connect the oxygen sensor (3).
    Fig 9: Ignition Coils - Left Cylinder Head

    Courtesy of DAIMLERCHRYSLER CORP.

    1 - FUEL RAIL

    2 - IGNITION COILS

    3 - WIRING HARNESS

    4 - LOWER INTAKE MANIFOLD

18. Lower the vehicle.
19. Install the left rocker arm assembly.
20. Install the left cylinder head cover and ground strap. See Fig 9.
21. Install lower intake manifold (4) (Refer to ENGINE/MANIFOLDS/INTAKE MANIFOLD - INSTALLATION)  .
22. Install the fuel rail (1).
23. Install the upper intake manifold (Refer to ENGINE/MANIFOLDS/INTAKE MANIFOLD - INSTALLATION)  .
24. Connect the air cleaner element housing (Refer to ENGINE/AIR INTAKE SYSTEM/AIR CLEANER HOUSING - INSTALLATION)  .
25. Fill the coolant system.
26. Connect the negative battery cable.