PRONAR T900, Operator'S Manual, Page: 111 / 153

SECTION 5 Pronar T900
5.15
•
checking tightness and visual inspection of the system,
•
cleaning the air filter (filters),
•
draining water from air tank,
•
cleaning drain valve,
•
cleaning and maintaining pneumatic conduit connections,
•
replacement of the pneumatic conduit.
DANGER
Do NOT use the trailer when brake system is unreliable.
5.3.2 CHECKING AIR TIGHTNESS AND VISUAL INSPECTION OF PNEUMATIC
SYSTEM
Checking air tightness of pneumatic system
Hitch trailer to tractor.
Immobilise tractor and trailer with parking brake, place the wheel chocks under
the trailer wheels.
Connect the pneumatic conduits.
Start tractor in order to supplement air in trailer brake system tank.
In double conduit systems air pressure should amount to approx. 8
bar.
Turn off tractor engine.
Check system components by releasing brake pedal in tractor.
Pay particular attention to conduit connections and brake cylinders.
Repeat the system check with depressed tractor brake pedal.
The help of a second person is required.
In the event of the appearance of leaks, compressed air will escape at the places of damage,
with a characteristic hiss. Lack of system tightness may be detected by covering checked