HATTAT A90 - Extra Equipment; Extra Equipment, Operating and Service; Brake System

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11. Extra equipment
11.1 Extra equipment, operating and service
In this section provides the operating and service instructions of the more complicated extra equipment,
which need special attention.
11.1.1. Brake system
Trailer pressure brakes (air brake system)
1. The construction of the air pressure brakes
1. Air compressor Ø75mm -110 CC
2. Oil inlet union
3. Oil inlet pipe
4. Bracket
5. Air suction tube
6. Inflation sleeve
7. Air gun
8. Air relief valve
9. Union
10. Water draining valve
11. Air tank 15 lt.
12. Union
13. T union
14. Hand brake control valve
15. Union
16. Coupling (black)
17. Union
18. Coupling (black)
19. Trailer hose (black)
20. Manometre 10 BAR
21. Air brake valve
22. Coupling
23. Union
2. Instructions for operating
On the one hose system the trailer is connected to
couplings (16), which have been marked as follows:
- Container line(18)
- Brake line(16)
On the one hose system the trailer is connected to
the coupling (16) with a black cover (brake line)
WARNING: When using the trailer
brakes the brake pedals must always
be locked together when driving on
the road. When pressing one brake
pedal, the brake action of the trailer is smaller.
The trailer brakes operate also when using the
parking brake.
From the air pressure system it is possible to get
pressure for external purpose (8 bar), e.g. for
tyre/tire filling, from coupling (22) which is situated
on the right side under the cab.