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Cummins QST30 Diesel Engine Bolt Tightening Torques

 

Cummins QST30 Main Bearing Bolt torque
 
Step1 = 290 Nm
Step2 = 570 Nm
Step3 = +90 degrees

Cummins QST30 Connecting Rod Bolt torque
 
Step1 = 70 Nm
Step2 = recheck 70 Nm
Step3 = + 90 degrees

Cummins QST30 Cylinder Head Bolt torque
 
for bolts 1-6:
Step1 = 150 Nm
Step2 = 220 Nm
Step3 = + 90 degrees

bolt No. 7:
Step1 = 70 Nm


Komatsu 12v40 Diesel Engine Specs

 

Cummins QST30 Arrangement, displacement, bore and stroke
 
Arrangement
12v engine,
turbocharged

Displacement
30.5 liter

Bore
140.0 mm

Stroke
165.0 mm

Cummins QST30 Power and torque
 
Power
574-603 kW @ 2000 rpm

Torque
3350-3730 Nm @ 1400 rpm

Cummins QST30 Dimensions and weight
 
Dimensions
approx dimensions
varies according to machine:

length = 1715-2000 mm
width = 1450-1515 mm
height = 1592 mm

Weight
approx
3200 kg


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