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Mercedes OM444 specs, bolt torques, spec sheets, manuals


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Your Detroit Diesel Specs

Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque. Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.


Some Popular Engine Specs


OM444 bolt torques, specifications and manuals


Useful information for owners and repairers of OM444 engines

OM444 essential bolt tightening torques

Main Bearing Cap Screws - Center
156 mm max 
step 1 = 100 Nm
step 2 = 200 Nm
step 3 = 330 Nm
step 4 = + 90-100°

Main Bearing Cap Screws - Lateral
step 1 = 80 Nm

Connecting Rod Bolts
step 1 = 100 Nm
step 2 = + 90-100°

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°


OM444 manuals and spec sheets


Dimensions approx: ade multi engine dimensions image

om442, om443 & om444 specifications

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE 

e.g 
om442LA = ADE442TI

Bore
ADE 
Naturally aspirated = 130 mm

Other
Turbo models = 128.00 mm

Stroke
142.00 mm

Arrangement
om442
v8 engine
4-stroke cycle
Naturally aspirated

om442A
v8 engine
4-stroke cycle
Turbocharged

om442LA
v8 engine
4-stroke cycle
Turbocharged
Intercooled

Arrangement
om443
v10 engine
4-stroke cycle
Naturally aspirated

om443A
v10 engine
4-stroke cycle
Turbocharged

om443LA
v10 engine
4-stroke cycle
Turbocharged
Intercooled

Arrangement
om444
v12 engine
4-stroke cycle
Naturally aspirated

om444A
v12 engine
4-stroke cycle
Turbocharged

om444LA
v12 engine
4-stroke cycle
Turbocharged
Intercooled


Displacement
om442 - 15.080 liter
om443 - 18.267 liter
om444 - 22.618 liter

Compression ratio:
Naturally asprirted = 16.9:1
Turbocharged = 16.25:1

Weight approx:
om442 - 815 kg
om442A - 865 kg
om443 - 965 kg
om443A - 1020 kg
om444 - 1115 kg
om444A - 1165 kg
om444LA - 1220 kg

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Power 
om442 - 213 kW @ 2100 rpm
om442A - 260 kW @ 2100 rpm
om442LA - 320 kW @ 2100 rpm

om443 - 266 kW @ 2100 rpm
om443A - 325 kW @ 2100 rpm
om443LA - 400 kW @ 2100 rpm

om444 - 320 kW @ 2100 rpm
om444A - 390 kW @ 2100 rpm
om444LA - 480 kW @ 2100 rpm

Designations
German - English
A = Turbocharger = T
L = Intercooler = I
OM = Diesel engine = ADE

Torque 
om442 - 1100 Nm @ 1200 rpm
om442A - 1600 Nm @ 1200 rpm
om442LA - 1765 Nm @ 1200 rpm

om443 - 1375 Nm @ 1200 rpm
om443A - 2000 Nm @ 1200 rpm
om443LA - 2200 Nm @ 1200 rpm

om444 - 1650 Nm @ 1200 rpm
om444A - 2400 Nm @ 1200 rpm
om444LA - 2650 Nm @ 1200 rpm





Barrington Diesel Club
Phone: +27 72 754 4660
email: steve@barringtondieselclub.co.za
© copyright Steve Barrington 2016

Page Revision #6.2RsC 02-17

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