Mitsubishi Heavy Industries S3L, Service Manual

Page: 33 / 200

SERVICE DATA
2-7
2. Tightening torque table
2.1 Major bolt tightening torque
2.1.1 Basic engines
2.1.2 Fuel system
Table 2-8 Tightening torque list - Basic engines
Description
Threads
Dia × Pitch
(mm)
Torque
Remark
N·m kgf·m lbf·ft
Cylinder head bolt M10 × 1.75 83.4 to 93.2 8.5 to 9.5 61.5 to 68.7
Rocker cover bolt M8 × 1.25 9.81 to 12.7 1.0 to 1.3 7.2 to 9.4
Rocker shaft bracket bolt M8 × 1.25 9.81 to 19.6 1.0 to 2.0 7.2 to 14.5
Rocker arm adjusting nut M8 × 1.25 18.0 to 22.0 1.8 to 2.2 13.0 to 15.9
Tachometer L joint union nut M22 × 1.5 16.7 to 22.6 1.7 to 2.3 12.3 to 16.6
Band type hose cramp - 2.9 to 3.4 0.3 to 0.35 2.2 to 2.5
Thrust plate M8 × 1.25 9.8 to 11.8 1.0 to 1.2 7.2 to 8.7
Main bearing cap bolt M10 × 1.25 49.0 to 53.9 5.0 to 5.5 36.2 to 39.8
Connecting rod cap nut M9 × 1.0 32.4 to 37.3 3.3 to 3.8 23.9 to 27.5
Flywheel bolt M12 × 1.25 127 to 137 13.0 to 14.0 94.0 to 101.3
Crankshaft pulley nut M18 × 1.5 147 to 196 15.0 to 20.0 108.5 to 144.6
Rear plate
mounting bolt
For gen-
eral use
M12 × 1.25 53.9 to 73.5 5.5 to 7.5 39.8 to 54.2
Equivalent to
7T
For
tractor
M12 × 1.25 83.4 to 103 8.5 to 10.5 61.5 to 75.9
Table 2-9 Tightening torque list - Fuel system
Description
Threads
Dia × Pitch
(mm)
Torque
Remark
N·m kgf·m lbf·ft
Hollow screw
(fuel injection pump)
M12 × 1.25 14.7 to 19.6 1.5 to 2.0 10.8 to 14.5
M14 × 1.5 19.6 to 24.5 2.0 to 2.5 14.5 to 18.1
Delivery valve holder
(fuel injection pump)
- 39.2 to 49.0 4.0 to 5.0 28.9 to 36.1
Air-bleeding plug
(fuel injection pump)
M8 × 1.25 9.81 to 13.7 1.0 to 1.4 7.2 to 10.1
Nozzle retaining nut M16 × 0.75 34.3 to 39.2 3.5 to 4.0 25.3 to 28.9
Nozzle holder M20 × 1.5 49.0 to 58.8 5.0 to 6.0 36.2 to 43.4
Fuel injection pipe nut M12 × 1.5 24.5 to 34.3 2.5 to 3.5 18.1 to 25.3
Fuel leak-off pipe nut M12 × 1.5 20.6 to 24.5 2.1 to 2.5 15.2 to 18.1
Sliding sleeve shaft M10 × 1.25 29.4 to 41.2 3.0 to 4.2 21.7 to 30.4
Torque spring set special nut M12 × 1.0 14.7 to 24.5 1.5 to 2.5 10.8 to 18.1