Operation
111
5
TRAILER BRAKE COUPLINGS (If Equipped)
Pneumatic Trailer Brakes (If Equipped)
AIR_BRAKES
1. BLACK COUPLING - FEED AND RETURN
(SINGLE LINE SYSTEM) - IF EQUIPPED
2. YELLOW COUPLING - BRAKE SERVICE LINE
(DUAL LINE SYSTEM)
3. RED COUPLING - BRAKE EMERGENCY LINE
(DUAL LINE SYSTEM)
The air reservoirs store air under pressure to
operate the trailer brakes.
Maximum
Permitted Pressure.............12.5 bar (181 lb in
2
)
Working Pressure
Dual Line System...................7.5 bar (109 lb in
2
)
Single Line System...............5.0 bar (72.5 lb in
2
)
NOTE: A low pressure indicator (within the air
gauge) will illuminate, an alarm will sound and the
master warning lamp will illuminate if the system
pressure drops below 4 bar (58 psi).
Capacity ....................................... 10 litres (605 in
3
)
Drain Reservoirs ..............................................Daily
MD04G021
4. TEST PORT
(MAY BE USED TO CONNECT TYRE
INFLATION AIR LINE)
IMPORTANT: If this port is used to inflate a tyre
then a regulator and air pressure gauge MUST
be fitted.
Hydraulic Trailer Brakes
(If Equipped)
To connect or disconnect: Slide the sleeve back
on the trailer brake coupler and push on or pull
off, then release the sleeve.
DP96J414
WARNING: Make sure the system is at
working pressure before operating the
brakes with a trailer(s) fitted. Failure to do
this can result in injury or death.
WARNING: DO NOT park an unattended
tractor/trailer(s) combination using air
pressure to apply the brakes (Dual Line
Pneumatic Braking System). The
mechanical park brake on both the tractor
and trailer(s) MUST be applied.
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