Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
114
Appendix C Tightening Torques for Main Bolts
Bolt name
Bolt
specification
Control value
(N.m)
Inspection value
(N.m)
Fastening bolt for intake and exhaust pipes M10 45~50 45~60
Flywheel bolt M16-10.9 285~295 285~340
Fastening bolt for crankshaft hub M16-12.9 300~310 300~360
Fastening bolt for shock absorber M10-10.9 65~70 65~80
Fastening bolt for camshaft gear M10×1.25-12.9 85~90 85~110
Fastening bolt for gears between camshaft
and fuel injection pump
M8-12.9 55~60 55~70
Fastening bolt for fuel injection pump gear
(Euro-II engine)
M10-10.9 65~70 65~80
Nut on fuel injection pump shaft
Nut on fuel injection pump shaft
M14×1.5 85~100 85~110
M18×1.5 100~110 100~120
Hexagon bolt and stud for flywheel
housing
M12-12.9 140~145 140~170
M10-12.9 80~85 80~95
Fastening bolt for oil sump
Cylindrical head bolt for cast carrying oil
sump
M8-8.8 20~25 20~35
M8-10.9 30~35 30~45
Fastening bolt for double-stage balance
mechanism
M8-8.8 20~25 20~35
Fastening bolt for engine oil pump
Stud with lock nut
M8-12.9 30~40 30~50
M8-8.8 20~25 20~35
Rocker seat bolt M10-8.8 40~45 40~55
Rocker adjustment nut M9×1 20~25 20~35
Fastening bolt for cylinder head cover M8-8.8 10~15 10~25
Lock nut of high pressure fuel pipe M14×1.5 20~25 20~35
Fastening nut for fuel injector
Fastening bolt for fuel injector (Euro-II
engine)
M8-8.8 10~15 10~25
M10×1.25-10.9 80~85 80~95
Fastening bolt for pulley on wheel hub
M8-8.8 45~50 45~60
M10-10.9 65~70 65~80
M12-8.8 85~90 85~100
Fastening bolt for hydraulic pump
M8-10.9 30~35 30~45
M10-10.9
60~65 60~75