Paccar TX-18 - Hill Start Aid Operation (HSA)

Power Down
WARNING
When parking a vehicle, fully raise lift
axles that
are not equipped with park-
ing brakes. If left in the down position,
a lift axle not equipped with a parking
brake could cause the parked vehicle
to roll, resulting in an accident. Failure
to comply may result in property dam-
age, personal injury, or death.
The information provided in this topic is
intended to enhance or amend the Engine
Shutdown Procedure, Stopping the
Vehicle, and Final Stopping Procedures
located in the Engine Operator's Manual
and Chassis Operator's Manual specific for
your vehicle. Familiarize yourself with the
information in this topic, and make the
appropriate adjustments to those
procedures, if necessary
, when shutting
down the engine.
1. Place the transmission in neutral
(N).
NOTE
The transmission should always be in
Neutral before
powering down, except
in emergency situations.
If the transmission gear display
does not show a solid N, the
transmission is not in Neutral.
2. Set the parking brake.
WARNING
DO NOT use the service brakes or
trailer
hand
brakes to hold a parked
vehicle. Because these brakes rely on
air pressure, a loss of pressure could
loosen the brakes and cause the vehi-
cle to roll, resulting in an accident. Al-
ways set the parking brakes. Failure to
comply may result in property damage,
personal injury, or death.
WARNING
DO NOT leave the transmission in
gear to
hold a parked vehicle. Always
set the parking brake. Engine com-
pression may not provide sufficient
force to
hold the vehicle, or the trans-
mission may move out of gear, caus-
ing the vehicle to roll and result in an
accident. Failure to comply may result
in property damage, personal injury, or
death.
3. Cool down, and then turn OFF the
engine.
CAUTION
DO NOT shut off the engine immedi-
ately after
use, especially after a long
trip or if the engine has been subject to
high load. The engine is hot and must
be cooled. Idle the engine at 1000 rpm
for at least 4 minutes, then low idle for
an additional 30 seconds before shut-
ting off the engine. Failure to comply
may result in engine damage, reducing
its service life.
Hill Start Aid Operation
(HSA)
The Hill Start Aid feature is enabled by
default but can be temporarily disabled by
OPERATION - Hill Start Aid Operation (HSA)
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