PRONAR T669XL, Руководство оператора, Страница: 107 / 135

SECTION 5 Pronar T669XL, Pronar T700XL
5.21
•
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
Check system tightness
•
after travelling the first 1,000 km,
•
each time after making repairs or changing system components,
•
annually.
Checking air tightness of pneumatic systems
Hitch trailer to tractor.
Immobilise tractor and trailer with parking brake. Place chocks under trailer
rear wheel.
Start tractor in order to supplement air in trailer brake system tank.
In single conduit systems air pressure should be between 5.8 - 6.5
bar.
In double conduit systems air pressure should amount to approx. 6.5
bar.
Turn off tractor engine.
Check system components by releasing brake pedal in tractor.
Give 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 also detected by covering
checked elements with washing fluid or other foaming preparations, which will not react