Operation Manual

Fabrikant – Hersteller – Manufacturer – Fabrikant: ANSSEMS AANHANGWAGENS B.V. www.anssems.eu
Versie: GT-2
3
2.2 Coupling Head
Safety Precautions:
• Always ensure that the coupling head is properly connected to the towing vehiclis towball every time you couple up. If not coupled up correctly the
trailer may become detachted from the towing vehicle and cause an accident!
• Maximum possible articulation of the coupling head must not exceed +/- 25° vertically and +/- 20° horizontally. If exceeded, components will be
overloaded and the operation of the assembly adversely affected.
Operation:
Operation of couplings of the brand AL-KO and type AK7 on unbraked trailers and AK75 / AK160 / AK300 / AK 350 on braked trailers:
• Articulation:
Maintain articulation angle at +/- 25° (vertically Fig. 1) Maintain articulation angle at +/-20° horizontally (Fig. 1) Caution: If the articulation angle is
exceed, components will be overloaded. The function si no longer ensured!
• Coupling Up ( AK 7):
Push the safety lever (afb. 4/1) up with the index finger and lift the handle up and forwards.
Put the openen coupling onto the towball with the handle pulled up and in addition press down by hand. The coupling will close by applying a light
pressure. Press the handle down by hand untill the catch (Fig. 4/3) snaps out. The coupling head is correctly engaged when the green edge of the
visual indicator is visible (Fig. 4/2) Caution: It is most important to check that the coupling head is properly engaged on the towball each time.
• Coupling Up (AK75 / AK160 / AK 300 / AK 350):
Open coupling head. To do this pull the coupling handle up (Fig. 2/1) in the direction of the arrow. The coupling mechanism had fixed open position, i.e.
as long ad the coupling head is not placed on the ball the coupling handle will remain open.
Put the open coupling on the ball of the towing vehicle. The nose load on the coupling head automatically and audibly clics into position. In the interests
of safety press the handle down by hand as well (Fig. 2/1). Locking and securing takes place automatically.
The coupling ball is correctly connected when the green cylinder of the safety indicator is visible when the trailer coupling is viewed from the side (Fig.
2/2). The coupling mechanism is correctly engaged when the coupling handle can no longer be pressed down by hand.
Caution: When the coupling head is not correctly hitched onto the towball then the trailer can become disconnected from the towing vehicle.
• Uncoupling:
Lift coupling handle fully and remove the coupling head from the towball of the towing vehicle. Where there are higher nose loads, coupling and
uncoupling can be made easier bu use of the jockey wheel.
• Wear indicator (AK 7):
If the handle reaches back to the cutaway portion of the housing when the coupling head is engaged (Fig. 5) there wil be play between the towball and
the coupling head! Automatic readjustment is no longer possible and the assembly will require inspection.
Caution: Under these circumstances the coupling head can become detached from the coupling ball and the trailer break away from the
towing vehicle.
The coupling head and towball must therefore be checked immediately before future use. Any faulty patrs must be charnged immediately. All
mainenace work is to be carried out by specialist workshops.
Servicing and Cleaning:
Lubricationg points (Fig. 6)
Clean towball coupling. Lightly grease, or oil ball socket, jonts and bearing points as appropriate.
General purpose grease to DIN 51825 KTA 3K.
Troubleshooting
Fault Cause Elimination
Coupling does not engage when
placed on ball.
Ball diameter grater than 50 mm.
Inner parts of the coupling are dirty
or are not funtioning correctly.
Change ball
Clean and grease coupling,
replace as neccesarry.
Trailer cannot be uncoupled Ball deformed.
Align trailer and car and
uncouple.
Grease/lubricate coupling
mechanism.
Too much play in the coupling
danger of the trailer becomming
unhitched.
Coupling worn out.
Articulation angle exceeded. Rivet
bent.
Have coupling changed.
Have towball changed.