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© Scania Industrial & Marine Engines
Alternative 2
- Set the No. 1 cylinder to TDC by turning the engine in its direction of
rotation until both valves are closed.
- Adjust both the valves for the No. 1 cylinder. Correct valve clearance is
indicated on the instruction plate on one of the rocker covers.
- Repeat this procedure with the remaining cylinders in the order 5 - 4 - 2
- 6 - 3 - 7 - 8 (firing order) by turning the engine 1/4 revolution in its
direction of rotation between each adjustment.
22. Every 1,200 hours:
CHANGING (or CLEANING) VALVES
FOR CLOSED CRANKCASE
VENTILATION
Alternative 1:
Change the valves at the specified interval.
Alternative 2:
- Remove the valves at the specified interval.
- Clean the valves by placing them in a bath of diesel oil overnight.
Then rinse them several times in diesel oil and leave them to drain off.
- Refit the valves.
- The valves may be reused (cleaned) no more than twice after the
first 1,200 hours of use. Be sure to mark the valves in connection
with cleaning them.