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Verfügbare Sprachen
Verfügbare Sprachen
When inserting the drawbar eye the coupling mechanism is released by lifting the
coupling bolt. The coupling bolt slips through the drawbar eye bush and is automati-
cally double secured in its lowest end position in the hole of the bottom guide bush
(wear plate 13) by the locking lever (7) blocking up against the bevel of the coupling
bolt and by the locking pin (14) of the bolt- safety device located over the coupling
bolt. After each coupling process you have to check, if the bolt-safety device is com-
pletely inserted, which is perceptible (also by touch control) by the end plane of the
locking pin is flush with the end plane of the housing of the bolt-safety device. Only
in this working condition the trailer coupling is closed and double secured (see figure
page 7) so that the trailer may be operated.
If the locking pin of the bolt-safety device protrudes over the housing of the bolt-
safety device the trailer coupling is not closed and secured and the coupling procedu-
re must be repeated.
Uncoupling
Make sure, that the trailer is breaked. Make sure, that the trailer cannot roll forward
or backwards. (Support drawbar of centre axle trailer by landing gears). Pull hand
wheel of the bolt-safety device of the trailer coupling outwards and turn it then clockwi-
se until it stop. To open the coupling, move the handle upwards until it engages. Now
the coupling bolt is on top, the coupling is ready for uncoupling.
The vehicles can become separated by driving the truck forwards. By driving out the
drawbar eye the coupling mechanism is released again by lifting the coupling bolt and
the coupling closes automatically.
Maintenance:
On every inspection and in regular intervalls the trailer coupling should be checked for
wear. If the wear limits indicated below should be exceeded the specific parts have to
be replaced by new ones.
The movable parts of the coupling will be subject to less wear if they are always kept
well lubricated. In particular after cleaning with high – pressure washers the coupling
has to be lubricated. (Over grease nipple when the coupling is opened, opened to
avoid trouble of function by over-lubrication, additionally the movable parts of the
bolt-safety device)
Checking of wear: Coupling bolt in its bulged area (min 36,5mm), Clearance of the
coupling bolt in the bore hole of the wear plate (max. 2mm) , Axial play of the coup-
ling bolt (max. 5mm) , Distance between top of the coupling bolt and wear plate (max.
27mm)
Repair:
Repair works may only be carried out by professional workshops and scilled personnel!
Before any repair works started the coupling must be closed!
Mounting criteria for fitting or replacement of an automatic bolt coupling
with EC type approval in accordance with the directive 94/20 EC
When fitting the trailer coupling please attend to the relevant statutory regulations.
The trailer coupling may only be fitted on those vehicles being appropriate for the pur-
pose. Always attend to the construction regulations/instructions from the vehicle
manufacturers. Fitting of the trailer coupling on the vehicle has to be made in accor-
dance with the pertaining installation and operating instructions from the manufac-
turer and in compliance with the requirements laid down in appendix VII of the direc-
tive 94/20 EC.
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