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OM661 and OM662 Essential Diesel Engine Bolt Tightening Torques

 

OM661, OM662 Mercedes Main Bearing Bolts
Step 1 = 55 Nm
Step 2 = +90 degrees

OM661, OM662 Mercedes Connecting Rod Bolts
Step 1 = 35 Nm
Step 2 = +90 degrees

OM661, OM662 Mercedes Cylinder Head Bolts
12 Sided socket head bolts
Stage 1 = 10 Nm
Stage 2 = 35 Nm
Stage 3 = + 180 degrees


OM661 and OM662 Diesel Engine Specs

 

OM661, OM662 Mercedes Arrangement

OM661
in line 4 engine,
4-stroke cycle
turbo intercooled

OM662
in line 5 engine
4-stroke cycle
turbo intercooled

OM661, OM662 Mercedes Displacement, bore, stroke

Displacement
OM661
2.3 liter

OM662
2.9 liter

Bore
89.0 mm

Stroke
92.4 mm

OM661, OM662 Mercedes Power and compression ratio

Power
OM661
74 kW @ 4000

OM662
88 kW @ 4000

Compression ratio
22:1

Mercedes Designations German - English

A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

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
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