207
MAINTENANCE INSTRUCTIONS
G733 E740 E741
WORKING PRESSURE OF AIR
BRAKES
In case of a single hose (1) and double-
hose (2) designs, air pressure on the
double-hose coupling head (red capsule)
is 740 ± 20 kPa and on the single-hose
coupling head is 600 ± 20 kPa max. (at-
the moment when pressure regulator re-
lieves the compressor by blowing off).
MAINTENANCE OF THE AIR-CONDITIONING (A/C) SYSTEM
Cleaning of the A/C condenser is the most important part of maintenance of
this equipment (it is installed in front of the engine radiator).
Clogged A/C condenser reduces effectiveness of cooling of the A/C system
as well as cooling of the engine.
Open the bonnet, screw off the nut (1) and slide the radiator to the side and purge it
using compressed air or flush it pressurised water (against direction of drive).
Then slide the radiator back to its position and fix it properly. Pay attention to correct
arrangement of hoses to the oil cooler.
With correct function of the A/C system, water condensates in the roof space of the
cabin. Condensate is drained by hoses in columns of the cabin and flows out in lower
ends of the columns. Therefore pay attention to the hoses that should not be clogged
to drain condensate.
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