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OM904 and OM906 Essential Diesel Engine Bolt Tightening Torques
OM904, OM906 Mercedes Main Bearing Bolts
step 1 = 30 Nm
step 2 = 80 Nm
step 3 = 155 Nm
step 4 = + 90 degrees
OM904, OM906 Mercedes Connecting Rod Bolts
step 1 = 10 Nm
step 1 = 45 Nm
step 3 = + 90 degrees
OM904, OM906 Mercedes Cylinder Head Bolts
step 1 = 20 Nm
step 2 = 70 Nm
step 3 = 170 Nm
step 4 = 280 Nm
step 5 = + 90 degrees
step 6 = + 90 degrees
OM904 and OM906 Diesel Engine Specs
OM904 and OM906 Mercedes Arrangement and compression ratio
Arrangement
OM904LA
in-line 4 cylinder engine
4-stroke cycle
turbocharged
intercooled
Arrangement
OM906LA
in-line 6 cylinder engine
4-stroke cycle
turbocharged
intercooled
Compression ratio
18.0:1
OM904 and OM906 Mercedes Displacement, bore, stroke
Displacement
OM904
4.25 liter, 259 CID
OM906
6.4 liter, 390 CID
Bore
102 mm, 4.02 in
Stroke
130 mm, 5.12 in
OM904 and OM906 Mercedes Power and torque
Power
OM904LA
75-130 kW, @2200 rpm
OM906LA
170-205 kW, @2200 rpm
Torque
OM904LA
400-670 Nm, @1200-1600 rpm
OM906LA
810-1100 Nm, @1200-1600 rpm
OM904 and OM906 Mercedes Dimensions and Weight
Dimensions approx
OM904LA
length = 830 mm
width = 645 mm
height = 925 mm
OM906LA
length = 1078 mm
width = 645 mm
height = 940 mm
Weight approx
OM904LA
365 kg, 803 lb
OM906LA
530 kg, 1166 lb
Diesel Engine Specs
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