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Bleeding of the pressure air brake system for trailers
Should be performed with the started engine and
connected brake pedals according to the following
procedure:
1. Remove the rubber cap, install the hose on the bleeder
screw (1) and immerse the other end to the bottom of the
transparent vessel partly filled with the oil that forms the
filling of the gearbox. The bleeder screw must be
permanently under pressure to prevent air penetration
through its threads, therefore when doing this place the
vessel at least 300 mm above the bleeder screw.
2. Release the bleeder screw by 1/4 revolution max.
3. Press down the connected brake pedals and tighten the
bleeder screw.
4. Release the brake pedal and repeat the procedure until
no air bubbles come out of hose.
5. Remove the hose from the bleeder screw and install the
rubber cap back on it.
6. Follow the same procedure for bleeding the screw (2).
Deaeration of the trailer hydraulic brakes
Should be performed with the started engine and
connected brake pedals according to the following
procedure:
1. Remove the rubber cap, install the hose on the bleeder
screw (1) and immerse the other end to the bottom of the
transparent vessel partly filled with the oil that forms the
filling of the gearbox. The bleeder screw must be
permanently under pressure to prevent air penetration
through its threads, therefore when doing this place the
vessel at least 300 mm above the bleeder screw.
2. Release the bleeder screw by 1/4 revolution max.
3. Press down the connected brake pedals and tighten the
bleeder screw.
4. Release the brake pedal and repeat the procedure until
no air bubbles come out of hose.
5. Remove the hose from the bleeder screw and install the
rubber cap back on it.
Foot brake check
With the foot brake pedals disconnected depress the
pedal with the maximum force of approx 500 N. If the
pedal can be depressed almost to the stop consisting in
the boss on the bottom part of the console, the foot brake
must be adjusted.
ADJUSTMENT
199
F18N061
F18N062
F287
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