WARNING
DO NOT operate the engine compres-
sion brake or exhaust brake when driv-
ing/operating your vehicle bobtail or
with a loaded or unloaded trailer on
road surfaces with poor traction (wet,
icy, or snow covered roads) or in
heavy traffic. There may not be
enough weight on the rear axle to pro-
vide traction. Braking caused by the
normal operation of the engine com-
pression brake or exhaust brake could
cause you to lose control of the vehi-
cle, resulting in an accident. Make
sure the engine compression brake or
exhaust brake is switched "OFF" when
driving bobtail or with an unloaded
trailer. Failure to comply may result in
death, personal injury, equipment, or
property damage.
CAUTION
Never exceed governed engine speed
because engine damage can occur.
Operating the engine beyond the gov-
erned speed causes additional strain
on valve train and internal engine com-
ponents. Operate the engine within
governed engine speed.
NOTE
After you have determined what the
safe speed is for your vehicle, operate
the engine compression brake or ex-
haust brake with the transmission in
the lowest gear that will not cause the
engine speed to exceed the rated en-
gine speed. The optimum braking
power of the engine compression
brake or exhaust brake is reached at
rated engine speed. Correct gear se-
lection, therefore, is critical.
The selector switch can be used to vary
braking power as road conditions change.
Vehicle service brakes must be used when
additional braking power is required.
Slow Down Around Curves
25
MPH
The engine compression brake or exhaust
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 pressure to slow the
ENGINE OPERATION - Operating Instructions
Y53-1185-1J1 (10/21)
31
1
Содержание PX-9
Страница 1: ...Operator s Manual Operator s Manual 2022 Model Year Warranty 2021 Emissions...
Страница 2: ......
Страница 3: ...PX Operator Manual PACCAR PX 9 Engine...
Страница 4: ......
Страница 5: ...Engine Operation 1 Engine Maintenance 2 Engine Warranty 3 Contents...
Страница 78: ...ENGINE MAINTENANCE Engine Identification Y53 1185 1J1 10 21 75 2...
Страница 79: ...Chapter 3 ENGINE WARRANTY United States and Canada Engine Warranty 77 ENGINE WARRANTY 76 Y53 1185 1J1 10 21 3...
Страница 92: ...ENGINE WARRANTY United States and Canada Engine Warranty Y53 1185 1J1 10 21 89 3...
Страница 96: ...Index...