Doosan DB33A, Руководство по обслуживанию, Страница: 53 / 78

49
Important operation
¡ ¡
‹
Crankshaft bearing (upper) (2)
¡ ¡
‹
Crankshaft bearing (lower) (5)
Center lower half bearing has no oil groove and oil
hole while others all have oil groove and oil hole.
¡ ¡
‹
Crank shaft (3)
Install the crankshaft so that the crank gear
assembled part is directed to the front of the engine.
¡ ¡
‹
Thrust bearing (4)
Install the thrust bearings with the oil groove side
facing the crankshaft contact face.
¡ ¡
‹
Crankshaft bearing cap
- Lubricate the bearing cap bolts with engine oil
- Install the bearing caps to the crankshaft. The arrow
mark must be pointing to the front of the engine.
Tighten the bearing cap bolts to the specified torque a
little at a time in the numerical order shown in the
figure.
Check that the crankshaft turns smoothly by manually
rotating it.
With oil hole
and groove
No oil groove and hole
(center lower)
Fit correctly
Front
Oil groove side
Arrow mark(position No. punched)
Front
Lubricate with enging oil
Arrow mark
Torque (kg
ƒU
m)
24
(173.6 lb
¡⁄
ft)