Diesel Chassis – Heavy Duty Truck Systems – Lecture Summary & Practice
Questions
What are said to be the two biggest cost factors in operating a truck? - ANS ✔✔Fuel is first,
followed by tires.
Truck wheel ends: - ANS ✔✔A wheel that is mounted to a rim, and the brakes are mounted to a
spindle.
If a truck is specified for minimum weight, optimum fuel economy and the lowest unsprung
weight, which of the wheel would probably be used? - ANS ✔✔Wide-base, aluminum singles
When matching tires on a tandem drive axle truck with dual wheels what should be true about
the tires? - ANS ✔✔All eight drive axle tires should match in nominal size and type of
construction.
What is said to be the number one cause of tire blow outs? - ANS ✔✔Under-inflation
At what point should a tire be deflated when it is going to be replaced? - ANS ✔✔Before
removing it from the wheel.
What safety precaution should be adhered to when inflating truck tires? - ANS ✔✔Inflate tires
in a safety cage.
When torquing the rim lug (clamps) nuts on a truck cast spoke wheel, what method, torque
sequence, and position should be used to torque each nut? - ANS ✔✔Wheel up, criss-cross
torque sequence, torque each nut at 12 o'clock.
Questions
What are said to be the two biggest cost factors in operating a truck? - ANS ✔✔Fuel is first,
followed by tires.
Truck wheel ends: - ANS ✔✔A wheel that is mounted to a rim, and the brakes are mounted to a
spindle.
If a truck is specified for minimum weight, optimum fuel economy and the lowest unsprung
weight, which of the wheel would probably be used? - ANS ✔✔Wide-base, aluminum singles
When matching tires on a tandem drive axle truck with dual wheels what should be true about
the tires? - ANS ✔✔All eight drive axle tires should match in nominal size and type of
construction.
What is said to be the number one cause of tire blow outs? - ANS ✔✔Under-inflation
At what point should a tire be deflated when it is going to be replaced? - ANS ✔✔Before
removing it from the wheel.
What safety precaution should be adhered to when inflating truck tires? - ANS ✔✔Inflate tires
in a safety cage.
When torquing the rim lug (clamps) nuts on a truck cast spoke wheel, what method, torque
sequence, and position should be used to torque each nut? - ANS ✔✔Wheel up, criss-cross
torque sequence, torque each nut at 12 o'clock.
