Volkswagen Transporter T4, Руководство пользователя

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Subframe
The subframe must consist of steel. It is required for attachments whose lumped loads are guided into the chassis, e. g.
for dump trucks and tractive units.
The subframe is used to distribute the forces, which are induced punctiformly, uniformly over the entire chassis frame. For
this purpose, it should lie above the side rails and be guided to the driver™s cab. In addition, it should be tapered in the
front section.
The various air gaps between chassis and subframes need not to be filled. With a floor frame it is possible to fix
self-supporting attachments directly at the standard brackets.
Subframes and self-supporting attachments are to be fixed at the chassis using all available brackets.
Mounting Frame
The mounting frame is
exclusively
used for directly receiving auxiliary units, etc. Only screws are permitted for attaching
the mounting frame at the chassis frame.
The mounting frame needs not to cover the entire chassis frame - as is the
case with the subframe.
The mounting frames does not meet any strength requirements to protect the chassis frame.
General instructions on the modification of standard vehicles
It is not permitted to modify spring characteristics,
brake system and steering unit. Exceptions must be approved by Volkswagen AG before the modification is carried out. If
noise-emitting parts (e. g. engine, tyres, exhaust system, etc.) are modified, it is required to perform noise measurements
according to EC directives. The permitted values must not be exceeded. If the car body is to be modified in the area of the
petrol tank, it is required to dismount the tank beforehand.
Shackle attachment for the first two fastening points, left/right, behind the driver™s cab (if required).
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