Assembly advice for cylinder heads
Before installing, check the following:
- Whether the delivered cylinder head matches the engine type.
- Whether the delivered cylinder head is free of transport damage.
- Whether everything is consistent with the agreements made.
- Never place the cylinder head on the head gasket fitting surface: this may damage the gasket surface or valves.
- Try to find the cause of the cylinder head damage and remedy it first.
- Check the cylinder walls and pistons for damage and remove any residual carbon.
- Thoroughly clean all parts that will be transferred and check them for wear and damage.
- Check the head gasket fitting surface of the engine for damage and distortions.
- Clean the fitting surface and bolt holes, mind the coarseness of the block (as fine as possible).
- Always use new bolts (when prescribed) with the correct dimensions.
- Mount a head gasket of the correct thickness and type with the correct side facing up.
- Adhere to the prescribed tightening torques and order.
- Make sure that the timing chains of the distribution are correct and install new distribution belts and tension pulleys/circulators.
- Allow hydraulic tappets to rest for at least one hour after installation so they can settle in. It is recommended to rest them for a night.
- Adjust the valve clearance for fixed tappets/valve-clearance plates with an extra margin of 0.05 mm.
- After adjusting the distribution, run the engine for two revolutions manually to check that the valves do not touch the piston.
- Always replace the oil, oil filter, thermostat and cooling liquid in accordance with the types indicated in the factory prescriptions.
- Inspect the radiator and water pump for leaks and function.
- In the case of an LPG system, always run the engine on petrol for the first XNUMX kilometres and then adjust the system.
- Check the configuration of the ignition/injection system/fuel pump.
- Take a test drive and reinspect the entire system.