wsm M108S Workshop Manual page 168

M108S, WSM
Measuring the Gap of Angles between Crankshaft Mechanical
Top Dead Center and Crankshaft Position Sensor's Electrical
Top Dead Center
1. Remove the cylinder head covers, injectors, and rocker arm
bracket.
2. Set the No. 4 piston at top dead center.
3. Remove one valve bridge and one valve spring.
4. Install small O-ring (5) to the valve stem not to drop the valve
inside of cylinder.
5. Set the dial indicator (3) on the top of valve stem.
6. Measure the valve stem's highest point with turning flywheel
counterclockwise.
7. Stop to turn the flywheel at the valve stem's highest point.
8. Draw straight lines (9) on the flywheel housing (7) and the
flywheel with square ruler (6).
IMPORTANT
• Do not drop the valve (4) inside of cylinder.
• Do not turn the flywheel clockwise for measuring the highest
point of valve stem.
If exceeding the valve stem's highest point, turn back the
flywheel and measure the valve stem's highest point again.
• Straight lines (9) mean the crankshaft mechanical top dead
center.
(1) TC Mark on Flywheel Housing
(2) TC Mark on Flywheel
(3) Dial Indicator
(4) Valve
(5) O-ring
1-S45
ENGINE
(6) Square Ruler
(7) Flywheel Housing
(8) Flywheel
(9) Straight Line
W1069465
KiSC issued 05, 2012 A