STAS -
Instructions for use moving floor
16
D. SYSTEM DESCRIPTIONS
See also “Wear indicator (optional)” on page 16.
It may be possible that a tractor-trailer combination does not brake properly. Upon further investigation, it is usually
found that in case of a trailer with drum brakes, the brake lining has been glazed or burnt and the brake drums have
torn. In case of a trailer with disc brakes, it appears the brake pads have completely worn after a limited number of
kilometres and the brake discs show deep grooves.
For articulated vehicles, the tractor as well as the trailer are conform to European directives or to the regulations of
the United Nations nowadays. In practice however, it appears that on a combination of these two, optimum braking is
not performed. Nevertheless, it is most important that each of the vehicles takes on its share of the braking force in a
correct manner and under any loading conditions.
A synchronisation of the brake system (see § 3.5) on the tractor and the trailer prevents these problems.
This brake synchronisation, which should be carried out by the tractor manufacturer, is recommended in order to
obtain optimum brake force distribution and an optimum wear pattern between the tractor and the trailer.
Damage and wear as a result of poor brake synchronisation will not be accepted under warranty under any circum-
stances. We therefore recommend a brake synchronisation is performed and the synchronisation report is kept in a
safe place. Always ensure that the report clearly states the details of the tractor and the trailer, including the date on
which the synchronisation was performed.
3.4. PREVENTION OF PREMATURE BRAKE WEAR
3.5. BRAKE SYNCHRONISATION
Also consult the additional publications which have been supplied with the trailer.
Between the first 2000 and 10000 km, and after each change of tractor,
a brake synchronisation is recommended.
Please also refer to the additional documentation supplied with the trailer.
3.6. BRAKE PLATE
As the braking system is fitted with EBS, the brake plate has been replaced by a
sticker. The parameters of the EBS controlled brake system can be found on this
sticker.
Aangezien het remsysteem met EBS is uitgerust is het remplaatje vervangen door een zelfklever. Op de zelfklever
worden de parameters van het door het EBS gestuurde remsysteem teruggevonden.
3.7. DRUM BRAKE
The trailer brake operates according to the general drum brake principle. The force of the brake cylinder (1) starts up the
brake shaft via brake rods (2,3) in a rotary movement. The cam (4) at the end of the brake shaft spreads the brake pads (5)
and in this way pushes them against the inside of the brake drum (7) resulting in an effective braking force.
When the brake pedal is released, the cylinder pressure on the rods is removed and the brake shaft and cam return to
their original position. The brake pads are also returned to their original position by return springs (6). The brake force is
removed.
Figure 3.7.a. – Drum brake
3.8. DISC BRAKE
When the brake pedal is operated, the connecting rod (1) of the brake cylinder pushes on the lever (2) of the disc brake.
The wheel which is eccentrically mounted on bearings (3) transfers the force to the bridge (4). The clamping force impacts
upon the inner brake lining via the threaded rod and the piston (5). The brake lining (6) pushes itself off against the brake
disc (7). The reactive force which is generated on the brake saddle (8) is transferred to the opposing brake lining resulting
in this also being pushed against the brake disc with an equal force and generating an effective braking force.
Figure 3.8.a. – Disc brake
Figure 3.6.a. – EBS brake system sticker