Page 117 - USX Driver Handbook

U.S. XPRESS, INC. DRIVER HANDBOOK U.S. XPRESS, INC. DRIVER HANDBOOK

idling the engine. You can find heater control instructions on your
DriverTech unit.
Fleet Services (1-800-447-3152, Macro #20)

Any repairs not performed at a U.S. Xpress Service Center Shop
must be authorized by the Fleet Services Department BEFORE THE
WORK IS STARTED. Fleet Services can be reached by telephone at
(1-800-447-3152) or by MACRO #20.

If you call the Fleet Services Department, be ready to provide the
following information:
1. Your truck number.
2. Your trailer number.
3. Your present mileage (hub meter or odometer reading).

4. Your location (city, state, nearest exit, mile marker, intersection
or address, if you know it).
5. Brief description of the problem.
6. If your tires are flat/blown—include tire position and size.
7. If you have a leak (oil, air, coolant) – location of leak and
severity.
8. Check engine light – Are all fluid levels (oil and coolant) full?
9. What codes were displayed when you ran the DIAGNOSTIC
check?

Air Brake Checks
1. Shut off engine, turn on key.
2. Release parking brakes (push button).
3. Hold down brake pedal (4lbs = 1 minute).
4. Fan down brakes – check air buzzer and light (60 psi). Continue
to fan down brakes and check for spring brake application (brake
buttons will pop out at 20-45 psi).

Tractor Brake Adjustment
Never tamper with or use a wrench on the slack adjuster!
While in your truck, build up the air pressure until the governor kicks
off (with your trailer brake set), release your tractor parking brake and
using the foot valve, apply 60 to 70 pounds of application pressure five or
six times (not rapidly) or until the governor kicks back into operation.

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