Maintenance
111
present) and press in as far as it will go (Fig.
31/Item 4 & Fig. 32).
checking the efficiency of the front/rear
friction pads
1. Couple the AKS 3004 to the towball but do
not activate the stabiliser.
Fig . 32
2. If a green indicator
is visible (on the
handle), then the
AKS 3004 is in a
new condition or
the pads and
towball are
within the
permissible limits
(Fig. 33/Item 2).
3. If only a red indicator is visible (Fig. 34/Item
3), then this may have the following causes:
Fig . 33
Fig . 34
a) AKS 3004 is okay but the towball has
reached the lowest limit of 49.61mm
b) AKS 3004 shows signs of wear
c) Towball is in a new condition (50mm) 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 49.61mm)
Friction pad replacement (Front/rear only)
1. Uncouple the AKS 3004
2. Remove the rubber soft dock (pull up and
off) Fig. 35/Item 1 & Fig 36.
Fig . 35
3. Press the safety indicator outwards and
secure with SW14 hex. spanner (not
included), (Fig. 35/Item 2).
4. Remove cheese-head screws (Fig. 35/ item
3 & Fig 36), using special torx tool.
Fig . 36
Fig . 37
5. Press friction lining recess (Fig. 35/Item 4)
inwards and pull down and out.
6. Open coupling handle (Fig. 35/Item 8).
7. Remove countersunk head cap screw using
special torx tool (Fig. 35/Item 5 & Fig. 37).
8. Press friction pad inwards with a
screwdriver and remove from ball cup.
9. Fitment of new linings takes place in
reverse. Tighten screws 3 & 5 to 5 Nm.
10. Replace rubber soft dock, insert top section
first then bottom.
Important Maintenance and cleaning advice:
1. The towball should be cleaned regularly to
remove grease or other residue, the use of
Thinners, White Spirit or Brake Cleaner is
recommended - otherwise the stabilising
effect will be severely reduced.
2. If friction pads are contaminated, they
should not be cleaned but replaced.
