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