5
Removal and installation
COMPONENTS
4-3
4.2 INSTALLING CONTACT UNITS ON ELECTRICAL WIRES
The increasing application of electronics in
vehicles has made it necessary to use new
types of connectors and contacts. This has
resulted in the use of relatively small contacts.
More attention must therefore be paid to the
connections as a whole.
In addition, the number of connections has
considerably increased, so that the wiring
harnesses have become thicker. To keep the
wiring harnesses manageable, a new type of
wiring is now being used:
3.
Wires with a core section of 1 to 2.5 mm
2
and reduced insulation thickness, retaining
the mechanical properties, resistant to
temperatures up to 70
_C (in accordance
with DAF standard 9502). These wires are
not suitable for engine and gearbox wiring.
4.
Wires with a core section of 1 to 120 mm
2
and normal insulation thickness, resistant to
temperatures up to 105
_C (in accordance
with DAF standard 9504).
Note:
In view of the mechanical strength
required, the minimum permissible
core section is 1 mm
2
.
To ensure the reliability of systems and
connections, the following points should be
observed when repairs or additions are made to
the wiring:
1.
Always choose the following:
-
the correct type of contact
-
the correct wire diameter for the
contact used
-
the correct insulation diameter for the
cable used
-
the correct type of contact material
(tin-plated or silver-plated)
2.
Use the right tool for the job. Wire ends are
always clamped to a contact. For this
purpose special tools have been developed.
2
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