Correct answer
It must be inspected and maintained according to its model’s manufacturer instructions, without a universal greasing rule.
Follow the maintenance and checks specified for that model: condition, wear and correct engagement, and cleaning or lubrication where prescribed by its manufacturer. There is no universal rule to grease every coupling yearly or every 10,000 km. On friction stabilisers such as the AL-KO AKS 3004, the towball and friction elements must remain grease-free; distinguish these friction surfaces from other moving parts that may require lubrication. Do not use the combination if the coupling does not lock correctly or has a fault compromising safety; consult a competent workshop.
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It must be inspected and maintained according to its model’s manufacturer instructions, without a universal greasing rule.
Every coupling must be completely greased yearly, including a stabiliser’s friction elements.
It needs no engagement or wear checks before travelling.
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