Operating Instructions
PACCAR
Y53-1030A 12/09
– 33 –
The ECM then electronically enables or disables the engine
brakes.
Engine brakes cannot be enabled:
• When cruise control is active and the Engine
brakes in Cruise Control feature is turned off.
• When engine speed goes below 850 rpm.
• When the Engine Computer recognizes a system
problem.
The throttle sensor is part of the accelerator pedal assembly
located in the cab and will deactivate the engine brakes when
the acceleration pedal is depressed.
Summary of Contents for PX 8
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Page 3: ...Y53 1030A 12 09 Operator s Manual ...
Page 6: ...Foreword ...
Page 16: ...Introduction 10 Y53 1030A 12 09 PACCAR ...
Page 50: ...Operating Instructions 44 Y53 1030A 12 09 PACCAR ...
Page 58: ...Maintenance Guidelines 52 Y53 1030A 12 09 PACCAR ...
Page 60: ...Service Literature 54 Y53 1030A 12 09 PACCAR ...
Page 78: ...Maintenance Specifications 72 Y53 1030A 12 09 PACCAR ...
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