1) Couple the AKS 2004 to the towball but do not activate the stabiliser.
2) If a green indicator is visible (on the handle), then the AKS 2004 is in a new
condition or the pads and towball are within the permissible limits (Fig. 17/Item 2).
3) If only a red indicator is visible (Fig. 18/Item 3), then this may have the
following causes:
a) AKS 2004 is okay but the towball has reached the lowest limit of 49 mm
b) AKS 2004 shows signs of wear
c) Towball is in a new condition (50 mm) but the front/rear friction pads show a
high degree of wear.
Establish the diameter of the towball so that conclusions may be drawn as to the
wear of the friction pads (ball diameter must not be less than 49 mm)