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Coupling and uncoupling
Instructions for use for the fifth wheel are located on its handle when the truck is
delivered from the factory. If the instructions for use are missing, follow these general
guidelines until you have downloaded the manufacturer’s operating, care and
maintenance instructions.
Sites to download the manufacturer’s operating, care and maintenance instructions
from:
– JOST: www.jost-world.com
– Fontaine: www.fifthwheel-europe.com
– SAFHolland / GF / Eurohitch: www.safholland.com
DAF uses fifth wheels from several different manufacturers. The following guidelines
apply in general to the fifth wheels supplied by DAF.
WARNING! If the fifth wheel is damaged, you can lose the semi-trailer.
There is a risk of an accident. Always check that the fifth wheel is free
of damage before coupling-up.
Coupling semi-trailer
– Be absolutely sure that the semi-trailer is braked and cannot roll away.
– Pull out the fifth wheel handle, as explained in the manufacturer’s operating, care
and maintenance instructions. The jaw is now opened and ready for coupling.
– Drive the tractor close to the semi-trailer and make sure that the coupling pin is in
the middle of the V-shaped fifth wheel opening.
– The semi-trailer skid plate must be 20 mm to a maximum of 50 mm lower than the
fifth wheel plate. If necessary, adjust the height of the semi-trailer or tractor.
– Reverse the tractor slowly until the semi-trailer is on the fifth wheel and the jaw is
locked by the coupling pin. The fifth wheel handle then springs back into its original
position.
– Connect the brake pipes and the cables for the lighting and ABS/EBS.
NOTE: When coupling, check the coupling head rubbers of the air pipes
of both the tractor and the semi-trailer for possible damage.
– Check whether the fifth wheel is locked by slowly driving forward a short distance.
WARNING! If the fifth wheel is not correctly engaged, you can lose the
semi-trailer. There is a risk of an accident. Always check that the fifth
wheel is properly engaged after coupling-up.
– Lock the fifth wheel handle, as explained in the manufacturer’s operating, care and
maintenance instructions (see the examples of the different version used).
– Check that the semi-trailer is coupled to the fifth wheel without any air gaps and that
the automatic locking has in fact taken place.
– Retract the semi-trailer supports.
DW63246305.book Page 185 Friday, March 22, 2019 4:54 PM
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