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OM447 Essential Diesel Engine Bolt Tightening Torques

 

OM447 Mercedes Main Bearing Bolts
12pt bolts
300 Nm + 90-100 degrees

Hex bolts
80-90 Nm + 90-100 degrees

OM447 Mercedes Connecting Rod Bolts
step 1 = 100 Nm
step 2 + 90-100 degrees

OM447 Mercedes Cylinder Head Bolts
step 1 = 10 Nm
step 2 = 60 Nm
step 3 = 120 Nm
step 4 = 180 Nm
final step + 90-100 degrees

OM447 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 OM447 Displacement, Compression Ratio, Weight

Displacement
11.97 liter, 730 CID

Compression ratio
447N 16.5:1
447C 16.25:1
447T 16.25:1
447TI 16.25:1

Weight
approx
447N 815 kg, 1793 lb

OM447 Mercedes Arrangement

447N - OM447
6 Cylinder In-Line
4-stroke cycle
Naturally aspirated

447C
6 Cylinder In-Line
4-stroke cycle
Compensated

447T - OM447A
6 Cylinder In-Line
4-stroke cycle
Turbocharged

447TI - OM447LA
6 Cylinder In-Line
4-stroke cycle
turbocharged
intercooled

OM447 Mercedes Power and torque

Power
447N
235 hp, 175 kW @ 2200 rpm

447C
241 hp, 180 kW @ 2200 rpm

447T
298 hp, 222 kW @ 2200 rpm

447TI
355 hp, 265 kW @ 2100 rpm

Torque
447N
629 lb.ft, 853 Nm @ 1400 rpm

447C
664 lb.ft, 900 Nm @ 1300 rpm

447T
937 lb.ft, 1270 Nm @ 1300 rpm

447TI
1123 lb.ft, 1523 Nm @ 1100-1500 rpm

Mercedes Diesel engine Specs, Bolt torques and manuals

Many ADE Engines were made under licence to Mercedes,
and are mostly identical engines that enjoy the same parts and procedures as Mercedes OM engines

Mercedes Diesel engine manuals and specs
Click for Mercedes Diesel Engine Manuals, bolt torques, specs

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