WD6DE4CS534202544

The 2003 Freightliner Unimog, manufactured by Daimler Chrysler AG in Germany, is a robust Class 7 truck featuring a 6.4L in-line 6-cylinder diesel engine by Mercedes Benz. This 4WD cab-over-engine model is equipped with an air brake system and has a wheelbase ranging from 153 to 154 inches, making it ideal for heavy-duty tasks.

Decoded VIN:

Make

FREIGHTLINER

Manufacturer Name

DAIMLER CHRYSLER AG

Model

Unimog

Model Year

2003

Plant City

WOERTH AM RHEIN

Vehicle Type

TRUCK

Plant Country

GERMANY

Body Class

Truck

Gross Vehicle Weight Rating From

Class 7: 26,001 - 33,000 lb (11,794 - 14,969 kg)

Wheel Base (inches) From

153

Wheel Base (inches) To

154

Cab Type

MDHD: COE (Cab Over Engine)

Drive Type

4WD/4-Wheel Drive/4x4

Brake System Type

Air

Engine Number of Cylinders

Displacement (CC)

6400.0

Displacement (CI)

390.55196220628

Displacement (L)

6.4

Fuel Type - Primary

Diesel

Engine Configuration

In-Line

Engine Manufacturer

Mercedes Benz

Most common problems:

Brake air leak

Air brake systems rely on proper air pressure to function. Leaks in the air lines or fittings can cause a loss of pressure, leading to brake failure.

Air compressor failure

The air compressor is crucial for maintaining air pressure in the brake system. If it fails, the brakes won't work correctly.

Brake chamber issues

The brake chambers convert air pressure into mechanical force to apply the brakes. Faulty chambers can result in inefficient braking.

Turbocharger failure

In-line 6-cylinder engines often use turbochargers to boost power. A failing turbocharger can reduce engine performance and fuel efficiency.

Injector problems

Fuel injectors in diesel engines can clog or fail, leading to poor combustion and decreased engine performance.

Coolant leaks

The inline configuration may lead to coolant leaks at the head gasket or water pump, causing engine overheating.

Worn-out cylinder liners

High mileage on a 2003 engine could lead to worn cylinder liners, resulting in reduced compression and power.

Electrical system issues

Older models like the 2003 Unimog can have corroded wiring or failing sensors, leading to various electrical problems.

Dpf (diesel particulate filter) clogging

Diesel engines often have particulate filters that can clog over time, reducing engine efficiency and increasing emissions.

Exhaust manifold cracks

In-line engines can experience stress on the exhaust manifold, leading to cracks and exhaust leaks.

Transmission problems

Depending on the usage, the transmission in a Freightliner Unimog might encounter shifting issues or wear over time.

Suspension wear

Given the off-road capabilities of the Unimog, the suspension components might wear out faster due to rough terrain usage.

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