Maintenance
113
Fig. A Brake Adjustment
This system is much more user friendly, as
the handbrake lever need only be applied
until it passes a clearly detectable dead
point for it to render parking on reverse
slopes or steep hills absolutely safe.
It takes minimal effort from the operator to
move the handbrake lever past this dead
point.
If the caravan or trailer starts to move when
uncoupled from the towing unit, then the
energy stored in the cylinder is released and
the brakes applied in the normal manner.
Important Points to Remember
It is absolutely vital that the slight backwards
push of the caravan or trailer is applied
before it is uncoupled from the towing unit.
It is also important to check that the brake
has in fact operated correctly as soon as the
caravan has been uncoupled.
If the caravan or trailer is to be parked on a
steep slope or on loose or slippery surfaces,
it is advisable to chock the wheels.
Where possible, always ensure that the
handbrake lever is in the fully vertical
position.
When the handbrake has been applied, it is
possible for the caravan or trailer to roll back
as much as 25cm before the full force of the
brake takes effect.
All components of both the overrun device
and the wheel brakes must be those
manufactured by AL-KO as the braking and
reversing systems must be matched to
ensure optimum braking performance.
Combining parts manufactured by AL-KO
with those produced by other suppliers will
invalidate any guarantee entered into by
AL-KO.
Recommended Brake Adjustment
Procedure
Jack up the axle raising the road wheels
clear off the ground. Ensure drawshaft is fully
extended (in the towing position) and the
handbrake is in the “OFF” position (fully
forward).
Check that there is some end float in the rod
and spring cylinder.
Adjust brakes first (Fig. A) and the linkage
only if necessary.
IMPORTANT: During Wheel brake
adjustment the drum must only be revolved
in the direction of FORWARD rotation. Do
not use excessive force during adjustment.
Wheel brake adjustment is effected through
a hole in the brake backplate (see Fig. A).
With a screwdriver adjust the starwheel in
the direction of the arrow until there is
resistance to wheel movement. Slacken until
the brake drum turns freely in the forward
direction. A check for correct adjustment can
be made at the chassis end of the bowden
cable. When pulled the cable should extend
between 5 and 8mm.
Apply the handbrake two or three times to
ensure brake shoes are centralised in the
drum. Re-check the shoe clearance at the
wheel brake.
Adjust
Adjust