Doosan GL08K - Appendix; Tightening Torque for Major Parts; Tightening Torque for Plug Screws; Tightening Torque for Hollow Screws

Appendix
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Appendix
 Tightening torque for major parts
 Tightening torque for plug screw
 Tightening torque for hollow screw(4-hole)
* : Adopted in DOOSAN engine
Major parts
Screw
(Diameter
× pitch)
Strength
(Grade)
Tightening torque
Cylinder head bolt M14 × 1.5 10.9T
1st : 6.0 kg
• m
2nd : 90°
3rd : 90°
4th : 90°
Final : 60°
(Angle method)
Connecting rod bearing cap bolt M14
× 1.5 12.9T
1st : 4 kg
• m
2nd : 60°
Crankshaft main bearing cap bolt M16
× 1.5 12.9T
1st : 15 kg
• m
2nd : 25 kg
• m
Final : 30 kg
• m
Balance weight fixing bolt M12
× 1.5 10.9T 9.0 kg • m
Flywheel housing fixing bolt M14 × 1.5 10.9T 8.0 kg • m
Flywheel fixing bolt M14 × 1.5 10.9T 18 kg • m
Crankshaft pulley fixing bolt M12
× 1.5 12.9T 13.4 kg • m
Oil spray nozzle M14 × 1.5 - 4.5 kg • m
Diameter x pitch M10x1.0 M12x1.5 M14x1.5 M16x1.5 M18x1.5 M22x1.5 M26x1.5 M30x1.5
Torque (kg.m) 5.0 5.0 8.0 8.0 10.0 12.0 12.0 15.0
Material M8 M10 M12 M14 M16 M18 M22 M26 M30 M38
SM25C – 1.6 2.5 3.5 4.5 5.5 9.0 13.0 18.0 30.0
* SUM22L 0.8 1.8 3.0 4.0 5.5 6.5 11.0 16.0 20.0 35.0
STS304 0.8 1.8 3.0 4.0 5.5 6.5 11.0 16.0 20.0 35.0