Yuchai YC4D60-D21 - Tightening torques of the connecting screw thread

11
Cylinder compression clearance
(mm)
1±O.1
Oil volume (L)
13(11 in oil sump)
Tightening torques of the connecting screw thread
1． Tightening torques of main bolts and nuts are shown below:
Description
Tightening torque(N•m)
Description
Tightening torque(N•m)
Cylinder head
bolt
210～250
Flywheel bolt
170～210
Main bearing
bolt
220～260
Crankshaft belt
pulleyfastening bolt
≥300
Connecting
rod bolt
160～200
Camshaft gear locking
bolt
≥300
2．Except for the important connecting screw thread, tightening torque of other bolts and
nuts can be selected according to the table below:
Screw thread
specifications
M6
M8
MlO
M12
M14
Tightening
torque(N·m)
10～20
20～30
35～55
70～90
110～130