Appendix C Tightening Torques For Main Bolts - Baudoulin 4M11G Maintenance Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators

Appendix C Tightening Torques for Main Bolts

Bolt name
Fastening bolt for intake and exhaust pipes
Flywheel bolt
Fastening bolt for crankshaft hub
Fastening bolt for shock absorber
Fastening bolt for camshaft gear
Fastening bolt for gears between camshaft
and fuel injection pump
Fastening bolt for fuel injection pump gear
(Euro-II engine)
Nut on fuel injection pump shaft
Nut on fuel injection pump shaft
Hexagon bolt and stud for flywheel
housing
Fastening bolt for oil sump
Cylindrical head bolt for cast carrying oil
sump
Fastening bolt for double-stage balance
mechanism
Fastening bolt for engine oil pump
Stud with lock nut
Rocker seat bolt
Rocker adjustment nut
Fastening bolt for cylinder head cover
Lock nut of high pressure fuel pipe
Fastening nut for fuel injector
Fastening bolt for fuel injector (Euro-II
engine)
Fastening bolt for pulley on wheel hub
Fastening bolt for hydraulic pump
Bolt Control value
specification
M10 45～50
M16-10.9 285～295
M16-12.9 300～310
M10-10.9 65～70
M10×1.25-12.9 85～90
M8-12.9 55～60
M10-10.9 65～70
M14×1.5 85～100
M18×1.5 100～110
M12-12.9 140～145
M10-12.9 80～85
M8-8.8 20～25
M8-10.9 30～35
M8-8.8 20～25
M8-12.9 30～40
M8-8.8 20～25
M10-8.8 40～45
M9×1 20～25
M8-8.8 10～15
M14×1.5 20～25
M8-8.8 10～15
M10×1.25-10.9 80～85
M8-8.8 45～50
M10-10.9 65～70
M12-8.8 85～90
M8-10.9 30～35
60～65
M10-10.9
114
Inspection value
(N.m) (N.m)
45～60
285～340
300～360
65～80
85～110
55～70
65～80
85～110
100～120
140～170
80～95
20～35
30～45
20～35
30～50
20～35
40～55
20～35
10～25
20～35
10～25
80～95
45～60
65～80
85～100
30～45
60～75