Removal Procedure
- Remove the intake manifold. Intake Manifold Replacement
- Remove the exhaust manifold. Exhaust Manifold Replacement
- Camshaft Sprocket - Remove - Camshaft Sprocket Replacement
- Glow Plug - Remove [4x] - Glow Plug Replacement
Fuel Injection Fuel Rail Bolt (1) - Remove [2x]
- Fuel Injection Fuel Rail (2) - Remove
Remove the EN-51143 fixing tool (1).
Remove the 4 camshaft bearing rear cap bolts (1).
- Camshaft Bearing Rear Cap (2) - Remove
- NOTE:
Marking the camshaft sprockets.
Marking the exhaust camshaft sprocket and intake camshaft sprocket with paint marks (1).
Install the EN-50509 fixing tool (1) to the exhaust camshaft sprocket (2).
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Courtesy of GENERAL MOTORS COMPANY
Loosen the 8 intake camshaft bearing cap bolts in sequence as shown.
Remove the 8 intake camshaft bearing cap bolts (1).
- Remove the 4 intake camshaft bearing caps (2) and lay aside in the order as they were removed.
Intake Camshaft (1) - Remove
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Courtesy of GENERAL MOTORS COMPANY
Loosen the 8 exhaust camshaft bearing cap bolts in sequence as shown.
Remove the 8 exhaust camshaft bearing cap bolts (1).
- Remove the 4 exhaust camshaft bearing caps (2) and lay aside in the order as they were removed.
- NOTE:
Do not remove the EN-50509 fixing tool.
Exhaust Camshaft (1) - Remove
Remove the bearing bracket (1).
Remove the 16 valve lifter with valve lifter roller (1) and lay aside in the order as they was removed.
Remove the upper timing chain upper guide bolt (2).
- Loosen the timing chain upper guide (1) by loosen the lower bolt (3).
Engine Mount Bracket Bolt (1) - Remove [2x]
Remove and DISCARD the 2 outer cylinder head bolts (1).
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Loosen the 10 cylinder head bolts in sequence as shown step by step.
Cylinder Head Bolt (1) - Remove and DISCARD [10x]
- Cylinder Head (2) - Remove
- Cylinder Head Gasket (3) - Remove and DISCARD
- Disassemble the cylinder head. Cylinder Head Disassemble
Ensure the guide sleeves (4) are properly seated in the engine block.