4-35Caravan Equipment 4down by hand force only DO NOT use your foot or an extension bar, thiswill damage the components (Fig. 6).3) When opening or closing the stabiliser lever, please ensure your handdoes not touch the coupling handle - you may accidentally trap yourfingers! (Fig. 6).4.13.14 Noises whilst drivingAs a rule, the friction pads of the AKS 3004 do not make a noise duringdriving. Any clicking, creaking or squeaking noises that do arise may bedue to the following:a) Foreign bodies or dirt between the friction pad and tow ball. b) Dryoperation of the drawshaft inside the overrun device. c) A detachabletowball which has too much play in the locking mechanism.4.13.15 Remedial Actiona) Clean the tow ball and friction pads by lightly rubbing the surface (100-120 grit emery paper)b) Lubricate the drawshaft sleeve via the grease nipples. In addition, pushthe gaiter forward and grease (DIN 51 825 KTA 3K) the exposed part ofthe shaft (Fig, 7).c) Visit a specialist workshop to have the ball holding areachecked for damage and the locking mechanism forfunction. If necessary, change the towball.4.13.16 StoringTo reduce the possibility of contamination of componentparts of the AKS 3004 the stabilising handle should beclosed.4.13.17 Towing ballThe automobile towing ball should measure 50mmmaximum and 49mm minimum diameter (DIN 74058). Ifthe ball is below 49mm diameter it should be replaced immediately.4.13.18 Overrunning deviceThe device housing is packed with grease on assembly, but will require periodic maintenance to ensuresmooth operation of the braking system.i. Regrease the shaft bearings via the grease nipples provided at 3000 mile intervals, and beforestorage.ii. Ensure correct functioning of all pivot pins and levers and oil regularly.iii. Ensure correct functioning of handbrake ratchet and oil regularly.Fig 6Fig 7