WARNING
DO NOT operate the engine compres-
sion brake when driving/operating your
vehicle bobtail or with a loaded or un-
loaded trailer on road surfaces with
poor traction (wet, icy, or snow cov-
ered roads) or in heavy traffic. There
may not be enough weight on the rear
axle to provide traction. Braking
caused by the normal operation of the
engine compression brake could
cause you to lose control of the vehi-
cle, resulting in an injury accident.
Make sure the engine brake is switch-
ed "OFF" when bobtailing or with an
unloaded trailer. Failure to comply may
result in death, personal injury, equip-
ment or property damage.
WARNING
The service brakes must be used in an
emergency. The engine compression
brake alone might not stop the vehicle
fast enough to prevent an accident.
The engine compression brake is NOT
intended as the primary brake for the
vehicle, nor is it an emergency brake.
The engine compression brake only
helps the service brakes by using en-
gine back pressure to slow the drive-
train. Use the service brakes for quick
stops. You could be seriously injured if
you relied only on the engine compres-
sion brake to stop the vehicle in an
emergency. Failure to comply may re-
sult in death, personal injury, equip-
ment or property damage.
CAUTION
DO NOT operate the engine brake un-
til the engine oil temperature is above
86°F (30°C). Operation below 86°F
(30°C) could cause severe damage to
the engine. Idle the engine four mi-
nutes at approximately 1,000 rpm to
warm the engine before activating the
engine brakes.
NOTE
If your vehicle is equipped with anti-
lock brakes (ABS), operation of the
compression brake (if turned ON) may
be interrupted if the ABS system de-
tects wheel-slip due to operation on
slippery surfaces.
Ideally (on normal road surfaces), you
should slow your vehicle with the
compression brake (where permitted by
law) and use the service brakes only for
stopping completely. Operating this way
will greatly prolong the life of the service
brakes.
Compression Brake
With the compression brake switch ON, the
brake automatically creates its braking
effect when you remove your foot from the
accelerator pedal.
The brake switch is located on the
accessory dash panel. It controls whether
the brake is ON (ready to slow the vehicle
down) or OFF (no braking action).
1.
Do not use the engine compression
brake to slow the vehicle down
when you are bobtailing or pulling
an empty trailer.
2.
Make sure the brake is OFF before
starting the engine.
3.
After the engine is started, warmed
up and you are ready to get under
ENGINE OPERATION - Operating Instructions
Y53-1183-1G1 (05/19)
17
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Summary of Contents for PX-7
Page 1: ...Operator s Manual Operator s Manual 2019 2020 Model Years 2017 Emissions Warranty...
Page 2: ......
Page 3: ...Engine Operation 1 Engine Maintenance 2 Engine Warranty 3 Contents...
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Page 75: ...ENGINE MAINTENANCE Engine Identification Y53 1183 1G1 05 19 73 2...
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