- Loosen the 4 head-cylinder fastening nuts in 2 or
3 times and in a crossed sequence.
- Remove the head, the 2 centring dowels, the
gasket and the lower chain guide sliding block.
N.B.
DO NOT REMOVE THE DOWELS IF THEY ARE FORCED
INTO THEIR SEAT.
CAUTION
WHEN YOU HAVE TO REMOVE THE HEAD, PREPARE A SUITABLE CONTAINER SINCE THE
THERMAL GROUP CONTAINS COOLANT.
Removing the valves
- Using the appropriate tool fitted with an adaptor,
remove the cotters, caps, springs and valves.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y012 bush (valve removing tool)
CAUTION
ARRANGE THE VALVES SO AS TO RECOGNISE THE ORIGINAL POSITION ON THE HEAD (FLY-
WHEEL SIDE AND TRANSMISSION SIDE).
- Remove the oil guards using the special tool.
Specific tooling
020431Y Valve oil seal extractor
Engine X9 Evolution 500
ENG - 144