Doosan DP158LCF User Manual

5. About the engine
75
Tightening Torque of General Bolts
Please refer to the following tightening torque for the bolts
which are not listed in Tightening Torque of Main Parts.
1. Tightening Torque of General Bolts
Exhaust Manifold M10 10.9T
7.0 kgf·m ±1.05 kgf·m
Intake Manifold M8 8.8T
2.2 kgf·m ±0.33 kgf·m
Fuel Injection Pump
(Cylinder Block)
M10 X 1.5 10.9T
5.0 kgf·m ±0.5 kgf·m
Fuel Filter M12 X 1.5 8.8T
7.5 kgf·m ±1.12 kgf·m
Starter M12 X 1.5 8T
4.4 kgf·m ±1.2 kgf·m
Alternator Bracket M14 X 1.5 8.8T
7.0 kgf·m ±0.5 kgf·m
Oil Pressure Switch PT 1/8 -
2 kgf·m
Cooling Water Tem-
perature Switch
M14 X 1.5 8.8T
2 kgf·m
Main Parts
Nominal
(Diameter x Pitch)
Tensile Strength
Rank
Tightening Torque Remarks
Nomi-
nal
Diame-
ter ×
Pitch
(mm)
Strength Classification
3.6 4.6 4.8 5.6 5.8 6.6 6.8 6.9 8.8 10.9 12.9
(4A) (4D) (4S) (5D) (5S) (6D) (6S) (6G) (8G) (10K) (12K)
Elastic Limit Value (kg/mm
2
)
20 24 32 30 40 36 46 54 64 90 106
Tightening Torque (kg·m)
M5 0.15 0.16 0.25 0.22 0.31 0.28 0.43 0.48 0.5 0.75 0.9
M6 0.28 0.30 0.45 0.4 0.55 0.47 0.77 0.85 0.9 1.25 1.5
M7 0.43 0.46 0.7 0.63 0.83 0.78 1.2 1.3 1.4 1.95 2.35
M8 0.7 0.75 1.1 1 1.4 1.25 1.9 2.1 2.2 3.1 3.8
M8 x 1 0.73 0.8 1.2 1.1 1.5 1.34 2.1 2.3 2.4 3.35 4.1
M10 1.35 1.4 2.2 1.9 2.7 2.35 3.7 4.2 4.4 6.2 7.4
M10 x 1 1.5 1.6 2.5 2.1 3.1 2.8 4.3 4.9 5 7 8.4
M12 2.4 2.5 3.7 3.3 4.7 4.2 6.3 7.2 7.5 10.5 12.5
M12 x
1.5
2.55 2.7 4 3.5 5 4.6 6.8 7.7 8 11.2 13.4
M14 3.7 3.9 6 5.2 7.5 7 10 11.5 12 17 20
M14 x
1.5
4.1 4.3 6.6 5.7 8.3 7.5 11.1 12.5 13 18.5 22
M16 5.6 6 9 8 11.5 10.5 17.9 18.5 18 26 31

Doosan DP158LCF Specifications

General

Brand	Doosan
Model	DP158LCF
Category	Engine
Language	English