1. Prepare the Engine Bay:
- Disconnect the battery.
- Remove the air intake system and other obstructions to access the cylinder head.
2. Remove Cooling System Components:
- Drain the coolant from the engine.
- Remove the radiator hoses, fan, thermostat housing, and any other components that may interfere with the cylinder head removal.
3. Remove Camshaft Mechanisms:
- Remove the camshaft cover and timing belt components (refer to vehicle-specific instructions for proper timing procedures).
4. Remove Exhaust Manifold:
- Disconnect the exhaust system from the exhaust manifold.
- Remove the bolts securing the exhaust manifold to the cylinder head and take it off.
5. Cylinder Head Removal:
- Loosen the cylinder head bolts in the proper sequence specified in the vehicle's repair manual.
- Once all bolts are loose, remove them, and carefully lift off the cylinder head.
6. Cylinder Head Gasket Removal:
- Remove the old cylinder head gasket, being careful not to damage the cylinder head or the gasket mating surfaces.
- Clean the mating surfaces on both the cylinder head and the engine block.
7. Install New Cylinder Head Gasket:
- Position the new gasket on the cylinder block, ensuring proper alignment.
- Apply a thin layer of sealant or RTV silicone to both sides of the gasket, if specified.
8. Reinstall Cylinder Head:
- Carefully position the cylinder head back onto the engine block, aligning it correctly with the gasket.
- Hand-tighten the cylinder head bolts, then tighten them to the specified torque sequence and values following the manufacturer's guidelines.
9. Reconnecting Components:
- Reinstall the camshaft components and timing belt, referencing your vehicle's repair manual for timing-related procedures.
- Reconnect the exhaust manifold and the exhaust system.
10. Refill Coolant System:
- Refill the cooling system with coolant and ensure the system is properly bled of any trapped air.
11. Final Check:
- Double-check all connections and ensure everything is properly secured. Reconnect the battery.
12. Engine Start-Up:
- Start the engine and let it run for a few minutes. Check for any leaks or unusual noises. Monitor the temperature gauge to ensure the engine is not overheating.
It's crucial to follow the exact procedures and torque specifications provided in the repair manual for your specific VW Golf III model to ensure proper engine operation. If you are not confident in performing these tasks, it is recommended to consult a professional mechanic.