CAT: 8612 November 2019
Page 151
OPERATING INSTRUCTIONS
WARNING
The trailer parking brake release valve is only designed to be
used by the driver during tipping.
DO NOT
leave the driving
position while activated.
Only operate on relatively flat ground, if the truck brakes are
insufficient to hold the combination, release the parking brakes
and operate the service brakes
SYSTEM TRUCK PARK
With both knobs pushed in for normal operating modes, the parking brakes
of both the truck and the trailer may be applied by pulling the yellow
knob OUT. This will exhaust the air from the truck spring brakes, and
simultaneously cause the red knob to pop OUT, which will apply the trailer
brakes. This complies with the
ADR 35/03 requirement that one control
should apply all the parking brakes on the vehicle.
BRAKE SAFETY AND EMERGENCY
Do not operate the vehicle in the event of a malfunction in any air
circuit. The vehicle should not be operated until the system is repaired
and both braking circuits, including all pneumatic and mechanical
components, are working correctly.
Loss of system air can cause the service brakes to not function,
resulting in the sudden application of the spring brakes, causing
wheel lock-up, loss of control or collision by following vehicles.
Loss of air system could result in an accident and/or personal injury.
If pressure is lost in the truck front or rear circuit, the ‘check’ valves isolate
the unaffected circuit, allowing this circuit to continue normal operation.
The trailer brakes are still functional:
• If air pressure is lost in the trailer supply/park circuit, and the
pressure drops below the threshold pressure, the trailer spring
brakes are automatically applied, and the truck air pressure circuits
are unaffected.
• If air pressure is lost in the trailer brake service circuit, and the
pressure in the truck front and rear circuits drops below threshold
pressure, the truck and trailer spring brakes are automatically
applied.
Summary of Contents for T410
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Page 16: ...Page xiv CAT 8612 November 2019 CONTENTS ...
Page 24: ...Page xxii CAT 8612 November 2019 CONTENTS ...
Page 25: ...SECTION ONE OPERATING INSTRUCTIONS ...
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Page 238: ...SECTION TWO PREVENTIVE MAINTENANCE ...
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Page 331: ...SECTION THREE MAINTENANCE LUBRICATION SCHEDULES ...
Page 369: ...SECTION FOUR SERVICE RECORDS ...
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