162
MAINTENANCE INSTRUCTIONS
F_02_121 F_02_56
CHECKING THE AIR SYSTEMS FOR
LEAKS
− Fill the air reservoir to the maximum
pressure
− With the engine stopped the air pres-
sure must not drop by more than 10
kPa in 10 minutes.
Perform the leak check daily be-
fore driving with a trailer or semi-
trailer. In case of a brake system
failure or if the pressure drops
below 450 kPa, the warning indi-
cator on the dashboard will light
up.
WORKING PRESSURE OF AIR
BRAKES
In the single- and double-hose version
the air pressure at the double-hose cou-
pling (2) (red cap) is 740 ± 20 kPa and at
the single-hose coupling (1) max. 600 ±
20 kPa (at the moment the pressure con-
troller relieves the compressor - blows
out the air).
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