Pierce Driving and Controls Contin.

Question 1

All engine manufacturers warn against excessive engine operating time_____ at low
idle speed, particularly during cold weather.

Answer 1

(greater than 5 minutes)

Question 2

Excessive idling can have the following detrimental effects

on the engine:

Answer 2

Fuel dilution of the lubricating oil / Unburned fuel passing through to the exhaust system / Carbon build-up in the cylinder / Cylinder head valve sticking / Smoking / Reduced performance

Question 3

Additionally, torsional vibration levels for some engines may be higher at low idle speeds, leading to
_____.

Answer 3

premature wear of PTO splined shafts or other engine driven components.

Question 4

If it is necessary to idle the engine for more than 5 minutes, the ____ should be activated to
increase the engine speed to at least 1000 rpm.

Answer 4

fast idle switch

Question 5

Never stop the engine by turning off _____, or alternator damage may result.

Answer 5

the battery switch

Question 6

The turbocharger contains bearings and seals that are subject to the high heat of combustion exhaust
gases. While the engine is running, this heat is carried away by normal oil circulation. If the engine is
stopped suddenly, the turbocharger temperature may rise as much as _____. This may result in
_____.

Answer 6

100°F (56°C) / seized bearings or loose oil seals

Question 7

Stopping the Engine:

Idle engine for _____.

Answer 7

3 to 5 minutes

Question 8

Brake fade occurs when the _____ and the stroke of the slack adjusters become less effective.

Answer 8

brake drums become hot and expand away

from the brake shoes

Question 9

Downhill Operation or Heavy Braking:
If service brakes are required to
supplement retardation, apply the brakes in _____.
This will minimize heat buildup and reduce the possibility of brake fade.

Answer 9

short durations of 5 to 10 seconds rather than a continuous application

Question 10

Air Pressure Gauge, Indicator Light, and Audible Alarm:
The indicator
light will light and the alarm will sound any time the ignition switch is set to the run position and the pressure in either
section is less than approximately ____.

Answer 10

60 psi

Question 11

ABS cannot _____. Reduce speed

during slippery conditions, or serious injury or death may result.

Answer 11

provide more braking performance than the road conditions will permit

Question 12

ABS will prevent wheel lock-up at all

times. _____ until the vehicle speed has been reduced to the desired level.

Answer 12

Push the pedal steadily (do not pump brakes)

Question 13

Parking Brakes:
If air pressure is
reduced to approximately ___, the spring brake valve will automatically apply.

Answer 13

40 psi in both systems

Question 14

Batteries give off ____ that is highly explosive

Answer 14

hydrogen gas

Question 15

Whenever disconnecting battery terminals, always _____ . When
reconnecting, always connect the ground terminal last.

Answer 15

disconnect the ground terminal first

Question 16

Do not attempt to jump-start a vehicle having a frozen battery, because the battery may _____. If a frozen battery is suspected, examine all fill vents on the battery. If ice can be seen, do not
attempt to start with jumper cables as long as the battery remains frozen. Thaw out battery and
recharge.

Answer 16

rupture or

explode

Question 17

A typical automotive battery contains ____

Answer 17

lead and sulfuric acid.

Question 18

Sulfuric acid and lead

react and release ___.

Answer 18

lead oxide and hydrogen gas.

Question 19

Battery Charger:

At full charge, all five bars illuminate green to indicate battery voltage of ____

Answer 19

13 volts +

Question 20

Battery Charger:
As the battery discharges, green bars extinguish ____ remain lit to indicate a battery voltage of
_____.

Answer 20

one at a time until three / 12.4 volts.

Question 21

Battery Charger:
If the state of charge drops further, green bars _____ and continue to extinguish until one red
bar remains.
If the state of charge drops further still, the red bar will flash to indicate charge has dropped to 11.2 volts or below

Answer 21

turn orange / yellow in color /11.2 volts or below

Question 22

Battery Over Charge:
If battery voltage gets too high _______ to indicate the over voltage condition.
If this occurs while the vehicle engine is running, there could be a fault with the alternator or charging system.

Answer 22

(15 volts or above), all five bars will flash red

Question 23

Sleep Mode:
The charger will enter sleep mode after ____. The meter automatically comes out of sleep mode if either battery voltage is above 13 volts.

Answer 23

48 hours if the charger and/or the vehicle is off and either battery voltage is
below 13 volts

Question 24

When in sleep mode, the LED lights will blink every____. The LED which blinks also indicates that battery’s
state of charge.

Answer 24

2-3 seconds

Question 25

Start up sequence:
When power is applied, the battery charger monitor will cycle through a test mode. The blue “Charger On” LED will
flash, and both bar graphs will light up sequentially while changing colors, _____ , and then normal operation
begins.

Answer 25

flash red

Question 26

Low Fuel Warning Light:
When the level in the fuel tank has dropped to the 1/8th tank mark:
• Light in fuel gauge comes on _____,
• Amber caution light in indicator bank comes on steady,
• LCD display ______ message.

Answer 26

steady / CAUTION text will flash with LOW FUEL LEVEL

Question 27

Low Fuel Warning Light:
When the level in the fuel tank has dropped to the 1/32th tank mark:
• _____ in indicator bank comes on steady,
• LCD display _____ message,
• Caution alarm will chime.

Answer 27

Red warning light / WARNING text will flash with VERY LOW FUEL LEVEL

Question 28

Maximum sump operating temperature is

Answer 28

250º

Question 29

If the engine does not start with ___ , release the starter button and allow the starter motor to cool for ___ before attempting to start engine again.

Answer 29

15 seconds / 60 seconds

Question 30

The vehicle is equipped with a C.E. Niehoff Model C531, ____ alternator with a remote regulator/rectifier.

Answer 30

360 amp

Question 31

When the level in the fuel tank has dropped to the _____ tank mark:
Light in fuel gauge comes on steady.
___ caution light in indicator bank comes on steady.
LCD display CAUTION text will flash with ____ message.

Answer 31

1/8th / Amber / LOW FUEL LEVEL

Question 32

When the level in the fuel tank has dropped to the ___ tank mark:
___ warning light in indicator bank comes on steady.
LCD display WARNING text will flash with _____ message.
____ will chime.

Answer 32

1/32th / Red / VERY LOW FUEL LEVEL / Caution alarm