wsm wg972-e4 - Page 127

ENGINE
WG972-E4, WSM
1-S36
Crankshaft Assembly
1. Remove the main bearing case screw 2 (1).
2. Turn the crankshaft to set the crankpin of the third cylinder to the
bottom dead center. Then draw out the crankshaft until the
crankpin of the second cylinder comes to the center of the third
cylinder.
3. Turn the crankshaft by 2.09 rad (120 °) counterclockwise to set
the crankpin of the second cylinder to the bottom dead center.
Draw out the crankshaft until the crankpin of the first cylinder
comes to the center of the third cylinder.
4. Repeat the above steps to draw out all the crankshaft.
(When reassembling)
• Clean the oil passage of the crankshaft with compressed air.
• Install the crankshaft assembly, aligning the screw hole of main
bearing case screw 2 with the screw hole of crankcase.
• When tightening the main bearing case screw 2, apply oil to the
main bearing case screw 2 (1) and screw by hand before
tightening the specific torque. If not smooth to screw by hand,
align the screw holes between the crankcase and the main
bearing case.
9Y1211108ENS0058US0
Tightening torque Main bearing case screw 2
27 to 30 N·m
2.7 to 3.1 kgf·m
20 to 22 lbf·ft
(1) Main Bearing Case Screw 2 (a) Cut Place for Removing and
Installing the Crankshaft
KiSC issued 07, 2015 A