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.
Cylinder head assembly:
  • 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.