Scania DC12 - Order of Adjustment for Unit Injector Rocker Arms

© Scania CV 2009 53
Order of adjustment
Turn the flywheel counterclockwise so that the marks on the flywheel can be
seen in the lower opening in the flywheel housing (depending on which
opening the reading is to be taken from). Refer to table.
Mark on flywheel
(reading taken through the
lower opening)
Valve overlap on
cylinder
Adjust injector
rocker arm on
cylinder
TDC Down (0°) 1 2
120° 5 4
240° 3 1
TDC Down (360°) 6 5
120° 2 3
240° 4 6
Mark on flywheel
(reading taken through the
upper opening)
Valve overlap on
cylinder
Adjust injector
rocker arm on
cylinder
TDC Up (0°) 1 2
300° 5 4
60° 3 1
TDC Up (360°) 6 5
300° 2 3
60° 4 6