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OM444 Essential Diesel Engine Bolt Tightening Torques
OM444 Mercedes Main Bearing Cap Screws
Center 156 mm max
step 1 = 100 Nm
step 2 = 200 Nm
step 3 = 330 Nm
step 4 = + 90-100 degrees
Main Bearing Cap Screws - Lateral
step 1 = 80 Nm
OM444 Mercedes Connecting Rod Bolts
step 1 = 100 Nm
step 2 = + 90-100 degrees
OM444 Mercedes Cylinder Head Bolts
step 1 = 10 Nm
step 2 = 50 Nm
step 3 = 100 Nm
step 4 = 140-150 Nm
step 5 = 180-190 Nm
step 6 = + 90-100 degrees
OM444 Diesel Engine Specs
Mercedes Designations German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE
example
OM366 = ADE366N
OM366A = ADE366T
OM366LA = ADE366TI
OM442LA = ADE442TI
Mercedes OM444 Displacement, Bore, Stroke, Compression Ratio, Weight
Displacement
om444 - 22.618 liter
Bore
ADE
Naturally aspirated = 130 mm
Other
Turbo models = 128.00 mm
Stroke
142.00 mm
Compression ratio
Naturally aspirated = 16.9:1
Turbocharged = 16.25:1
Weight
approx
om444 - 1115 kg
om444A - 1165 kg
om444LA - 1220 kg
OM444 Mercedes Arrangement
om444
v12 engine
4-stroke cycle
Naturally aspirated
om444A
v12 engine
4-stroke cycle
Turbocharged
om444LA
v12 engine
4-stroke cycle
Turbocharged
Intercooled
OM444 Mercedes Power and torque
Power
om444 - 320 kW @ 2100 rpm
om444A - 390 kW @ 2100 rpm
om444LA - 480 kW @ 2100 rpm
Torque
om444 - 1650 Nm @ 1200 rpm
om444A - 2400 Nm @ 1200 rpm
om444LA - 2650 Nm @ 1200 rpm
Diesel Engine Specs
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