Service Manual

Weichai America Corp.
Revision: August 2019 78
13 APPENDIX A
Appendix A: Torsional Torque and Tightening Method for Main Bolts and Nuts
Bolts Bolts Specification Tightening torque(N·m) Inspect value (N·m)
Intake manifold bolt M10 45～50 40～60
Exhaust manifold bolt M10 45～50 45～60
Flywheel bolt M16-10.9 285～295 285～340
Fastening bolt of crankshaft pulley M16-12.9 300～310 300～360
Damper fastening bolt M10-10.9 65～70 65～80
Camshaft gear bolt M10×1.25-12.9 85～90 85～110
Bolt of Intermediate Gear Shaft M10 65～70 65～80
Fastening Nut of Injection Pump
Driving Gear
M10-10.9 65～70 65～80
Nuts of Injection Pump Shaft
M14×1.5 85～100 85～110
M18×1.5 100～110 100～120
Hexagon bolts and stud of flywheel
M12-12.9 140～145 140～170
M10-12.9 80～85 80～95
Bolts of Oil Pan
Socket head screws of oil pan
M8-8.8 20～25 20～35
M8-10.9 30～35 30～45
Bolts of Oil Pump
Stud with self-locking nuts
M8-12.9 30～40 30～50
M8-8.8 20～25 20～35
Bolt of Rocker-Arm Seat M10-8.8 40～45 40～55
Rocker adjusting nut M9×1 20～25 20～35
Fastening bolt of cylinder head
cover
M8-8.8 10～15 10～25
Fastening bolt of pulley on hub M10-10.9 65～70 65～80
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