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Additional Information on Light Truck Tires
Tires for light trucks have other markings besides those
found on the sidewalls of passenger tires. See Figure 26
and the information following.
26
B
A
E
A- The "LT" indicates the tire is for light trucks. An "ST" is
an indication the tire is for trailer use only.
B- Load Range. This information identifies the tire's load-
carrying capabilities and its inflation limits.
C- Maximum Load Dual. This information indicates the
maximum load and tire pressure when the tire is used as
a dual, that is, when four tires are put on each rear axle (a
total of six or more tires on the vehicle).*
D- The "M+S" or "M/S" indicates that the tire has some
mud and snow capability. Most radial tires have these
markings; hence, they have some mud and snow
capability.
E- This information indicates the maximum load and tire
pressure when the tire is used as a single.*
*Note: Maximum load is presented in kilograms and
pounds (kg/ lbs). Maximum tire pressure is presented
in kilopascals and pounds per square inch (kPa/psi) for
when the tire is cold.
Tire Safety Tips
Preventing Tire Damage
•
Slow down if you have to go over a pothole or other
object in the road.
•
Do not run over curbs of foreign objects in the
roadway, and try not to strike the curb when parking.
Tire Safety Checklist
•
Check tire pressure regularly (at least once a month),
including the spare.
28
•
•
•
•
C
•
D
Addendum - Unit Options
Battery Disconnect
The optional battery disconnect allows convenient,
tool-free disconnection of the battery while the unit is
in storage or not in use, or to prevent unauthorized unit
operation.
To disconnect the battery:
1. Turn the switch (A, Figure 27) to the Disconnect
2. A padlock (not supplied) can be used for added
B
To connect the battery:
1. Remove the padlock (if used).
2. Turn the switch to the Connect position (C, Figure
27
Engine Air Intake Emergency Shut-Off
Valve
The optional air intake emergency shut-off valve
automatically closes the valve and shuts down the engine
when an overspeed runaway condition occurs.
Refer to the Pacbrake PH3 programming manual for
more information on operation and programming.
Inspect tires for cracks, foreign objects, uneven
wear patterns on the tread, or other signs of wear or
trauma.
Remove bits of glass and foreign objects wedged in
the tread.
Make sure your tire valves have valve caps.
Check tire pressure before going on a long trip.
Do not overload your vehicle. Check the tire
information placard or owner's manual for the
maximum recommended load for the vehicle.
position (B, Figure 27).
security.
27).
A
B
C
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