Paccar PX-7, Operator'S Manual

Page: 28 / 92

1. Locate the accessory receiving
antenna further away.
2. Check with the accessory supplier
representative in your area to:
• Accurately calibrate the
accessory for proper frequency,
power output, and sensitivity.
• Determine the optimum
antenna location by obtaining
antenna reflective energy data
measurements.
• Ensure that the optimum
antenna type and mounting
arrangement is being used.
• Ensure the accessory
equipment is properly
constructed for maximum
filtering to reject incoming
electromagnetic noise.
Operating on Level and Dry
Pavement
WARNING
DO NOT use the engine brake when
operating on road surfaces with poor
traction (such as wet, icy, or snow cov-
ered roads, or gravel). Retarders can
cause the wheels to skid on a slippery
surface. You could lose control of the
vehicle and/or jackknife if the wheels
begin to skid, resulting in an accident.
Failure to comply may result in death,
personal injury, equipment or property
damage.
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.
Remove Foot from Accelerator
MPH
0
10
20
30 40 50
60
70
80
To reduce vehicle speed, put the engine
brake ON/OFF switch in the "ON" position.
Remove your foot from the accelerator
pedal and clutch pedal. The engine brakes
will immediately begin to operate, slowing
the vehicle.
For operation on dry and relatively flat
surfaces, when greater retarding power is
not required, put the two-position selector
switch in the "LOW" position.
For operation on dry pavement when
maximum retarding power is required, put
the three-position selector switch in the
"HI" position.
ENGINE OPERATION - Operating Instructions
26 Y53-1183-1G1 (05/19)
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