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8
Start-up
8.6
Compressed air connections for the compressed air brake
78
BiG Pack 870 HDP XC
Original Operating Instructions 150000760_00_en
WARNING
Risk of injury due to a malfunctioning safety valve of the hydraulic brake
Check whether the safety valve for the hydraulic emergency brake works properly. Otherwise
the emergency brake may fail in case of emergency. This may result in serious accidents.
The safety chain must be attached tension free to the tractor. A safety chain that is
wrapped too strong around the hydraulic hose prevents the function of the safety valve.
Apply pressure to the pressure accumulator brake on the safety valve by actuating once
completely the brake pedal of the service brake before starting to drive.
The safety chain is equipped with a weaker chain link at one point (predetermined breaking
point). If the machine detaches unintentionally, the safety valve triggers the emergency brake
and the safety chain tears off at the weaker chain link. The chain link is destroyed in this
process and must be replaced.
2
1
2
4
3
BP000-100 / BP000-099
ü
The machine is shut down and safeguarded,
.
ü
The hydraulic hose (1) of hydraulic brake is disconnected,
.
Fasten safety chain (2) on the tractor.
Unlocking safety valve
Pull the safety chain (2) and keep it taut.
The safety valve is relieved by pulling the detent pin (3).
Move the locking lever (4) slowly in its initial position by means of the spring force.
8.6
Compressed air connections for the compressed air brake
The machine features a dual-line compressed-air braking system. The coupling heads are
connected to the machine for attachment of the supply line (2) (red coupling head) and brake
line (1) (yellow coupling head) of the tractor.