Paccar MX-13 Operator's Manual - page 31
Operating Instructions
Engaging conditions for the engine
compression brake are:
•
Engine speed must be above
1,000 rpm.
•
Coolant temperature must be
above 59°F (15°C).
Deactivation conditions for the engine
compression brake are:
•
Accelerator pedal is depressed.
•
Clutch pedal is depressed.
•
Engine speed falls below 800 rpm.
•
ABS control is active.
•
Engine ECM recognizes a system
problem.
CAUTION
Operating the engine with a com-
pression brake that will not auto-
matically deactivate (i.e. when the
dash switch is off, clutch pedal is
depressed or throttle is applied) will
cause severe internal engine dam-
age. Do not operate the engine if the
compression brake will not deacti-
vate. Failure to comply may result
in equipment or property damage.
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