Cylinder Head Replacement - Left Side

Cylinder Head Replacement - Left Side (LF1, LFW or LFX)

Special Tools

EN-45059 - Angle Meter

For equivalent regional tools, refer to Special Tools Special Tools.

Removal Procedure

1. Remove the camshaft cover. Refer to Camshaft Cover Replacement - Left Side Camshaft Cover Replacement - Left Side.

2. Remove the left bank secondary timing chain. Refer to Secondary Camshaft Intermediate Drive Chain Replacement - Left Side Secondary Camshaft Intermediate Drive Chain Replacement - Left Side.

3. Remove the fuel pump. Refer to Fuel Pump Replacement Fuel Pump Replacement.

4. Remove the generator. Refer to Generator Replacement (LS3/L99) Generator ReplacementGenerator Replacement (LFX) Generator ReplacementGenerator Replacement (LSA) Generator Replacement.

5. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Left Side Catalytic Converter Replacement - Left Side.

6. Remove the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement Service and Repair.

7. Remove the ground wire bolt and wire from the cylinder head.





8. Remove the 2 front M8 left cylinder head bolts (1).

9. Remove the left cylinder head bolts (2).

10. Remove the left cylinder head (3).





11. Remove and discard the left cylinder head gasket (1).

12. Clean and inspect the cylinder head and the engine block sealing surfaces. Refer to Cylinder Head Cleaning and Inspection 56. Cylinder Head Cleaning and Inspection and Engine Block Cleaning and Inspection 48. Engine Block Cleaning and Inspection.

13. Disassemble the cylinder head if needed. Refer to Cylinder Head Disassemble (LF1, LFW or LFX) 55. Cylinder Head Disassemble (LF1, LFW or LFX).

Installation Procedure





1. Ensure the cylinder head locating pins are securely mounted in the cylinder block deck face.

2. Install a NEW left cylinder head gasket (1) using the deck face locating pins for retention.





3. Align the left cylinder head (3) with the deck face locating pins.

4. Place the left cylinder head in position on the deck face.

Left Sequence:

Caution:
Refer to Fastener Caution Fastener Caution.

Note:

* DO NOT allow oil on the cylinder head bolt bosses.

* DO NOT reuse the old cylinder head bolts.

5. Install the NEW M11 cylinder head bolts (1).

1. Tighten the M11 cylinder head bolts a first pass in sequence to 30 Nm (22 lb ft).

2. Tighten the M11 cylinder head bolts a second pass in sequence an additional 150 degrees using the EN-45059 - meter.

6. Install the 2 NEW front M8 left cylinder head bolts (2).

1. Tighten the M8 cylinder head bolts a first pass to 15 Nm (11 lb ft).

2. Tighten the M8 cylinder head bolts a second pass in sequence an additional 75 degrees using the EN-45059 - meter.

7. Install the left bank secondary timing chain. Refer to Secondary Camshaft Intermediate Drive Chain Replacement - Left Side Secondary Camshaft Intermediate Drive Chain Replacement - Left Side.

8. Install the camshaft cover. Refer to Camshaft Cover Replacement - Left Side Camshaft Cover Replacement - Left Side.

9. Install the fuel pump. Refer to Fuel Pump Replacement Fuel Pump Replacement.

10. Install the generator. Refer to Generator Replacement (LS3/L99) Generator ReplacementGenerator Replacement (LFX) Generator ReplacementGenerator Replacement (LSA) Generator Replacement.

11. Install the exhaust manifold. Refer to Catalytic Converter Replacement - Left Side Catalytic Converter Replacement - Left Side.

12. Install the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement Service and Repair.