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Body and Implement Mounting Guidelines U500 North America
4.9.2
Cooling
The cooling system (radiator, charge-air cooler, fan, hydrostatic or
electric driven fan, radiator grille, air ducts, coolant circuit, etc.) must
not be modified. Sufficient airflow must be guaranteed. Therefore
please consider the following points:
•
Keep the radiator air inlet free (minimum distance between
radiator surface and implement parts: 8.00 in / 200 mm)
•
Do not block the air outlet behind the radiator (pressure fan).
Minimum distance between radiator surface and implement
parts: 8.00 in / 200 mm.
•
Do not affix warning signs, badges or other trim parts in the
area in the front of the radiator
•
If possible, design the implements in such a way, that the
radiator is not exposed to dirt
Provide auxiliary cooling facilities for major components if the
usage profile leads to the expectation of temperature problems. Do
not install an auxiliary radiator in front of the standard coolant radia-
tor or intercooler; only use complete units with their own fans, e.g.
electrically driven.
Disc brakes:
During general operation disc brake cooling must not be impaired
by implement components, for example auxiliary wheel covers,
brake disc covers, etc.
4.9.3
Engine air intake
Modifications to the engine-air intake are not permissible.
•
Protect the air intake against flying sparks by fire fighting ve-
hicles (wildfire rescue vehicles)
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•
Use an auxiliary dust filter if the vehicle is operated in ex-
tremely dusty conditions, but observe the maximum permissi-
ble air intake restriction. If in doubt, contact the Unimog Im-
plement Manager listed at the beginning of this guideline.
4.9.4
Exhaust system
Modifications to the exhaust system are not permissible since the type
and position are specified in the general certification. Relocation of the
exhaust tail pipe required for operation is permissible. For example, in
permanent crane work operation a tail pipe can be connected to an
extension pipe of the same diameter. With slow driving speeds (e.g.
work with plate compactors, suction sweepers) the tail pipe can be
rotated.
For driving on public roads the original position of the exhaust tail pipe
must be restored.
Notes:
•
In the case of modifications, use original parts of the Freightliner
LLC.
•
The free cross-section of the exhaust pipe behind the muffler must
not be reduced.
•
Bends in pipes must not be more than 90°, see Figure 4.13.
•
Additional bends in pipes are to be avoided.
•
Minimum bending radii of pipes must more than 2.5 times pipe
diameter, see Figure 4.12.
•
Minimum distance to plastic lines, electric cables and spare tire:
7.87 in / 200 mm in the case of exhaust systems without shields
o
3.15 in / 80 mm in the case of sheet metal shields
o
1.57 in / 40 mm in the case of sheet metal shields with additional
o
insulation
Implement / Body Installation
August 2005
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