Driver Training - Important Numbers Flashcards Preview

HFD Recruit Training > Driver Training - Important Numbers > Flashcards

Flashcards in Driver Training - Important Numbers Deck (72):
1

Windshield - No cracks greater than ___ inches or ________ cracks of any length.

2 inches
Intersecting

2

Leaf Springs - No more than ___ % missing, damaged, or broken.

25%

3

Slack Adjuster - Push-rod travel no more than ___ inch.

All slack adjusters should be ___ inch of each other.

1 inch

1/2 inch

4

Slack Adjuster Power Stroke - With brake pedal depressed, slack adjuster extends out no more than ___ inches.

2 inches

5

Drum Brake Pads - At least ___ inch of material, evenly worn

1/8 inch

6

Rotor Brake Pads - At least ___ inch of material

1/4 inch

7

Front Wheel - Tread depth no less than ___ inch

4/32 inch

8

Hub Oil Seal Sight Glass - Oil level at least ___.

Half way

9

Battery Cells - Specific gravity of a fully charged battery

1.260 - 1.280 (fully charged)

10

Battery Cells - Specific gravity of a 75% charged battery

1.225 - 1.259 (75% charged)

11

Battery Cells - Less than ___ % specific gravity requires battery to be charged

75%

12

Engine Oil - Level between ___ and ___

"Add" and "Fill"

13

Engine Oil - Color and Viscosity

Color
- Amber (good)
- Whitish (water in system)
- Blackish (old)

Viscosity
- Smooth
- No feel of grit or metal particles

14

Coolant - Level should be no more than ___ inches from cap.

2 inches

15

Power Steering - Level between ___ and ___

"Add" and "Fill"

16

Power Steering - ___ inch to ___ inch belt deflection

1/2 inch to 3/4 inch belt deflection

17

Water Pump - ___ inch to ___ inch belt deflection

1/2 inch to 3/4 inch belt deflection

18

Alternator - ___ inch to ___ inch belt deflection

1/2 inch to 3/4 inch belt deflection

19

Rear Wheel - Tread depth no less than ___ inch

2/32 inch

20

Low Pressure Warning Device - Light/buzzer activates below ___ psi

60 psi

21

Oil Pressure - If no increase within ___ seconds, engine must be shut down

a few seconds

22

Oil Pressure - Operating engine normal indication is ___ psi to ___ psi

40 to 60 psi (operating)

23

Oil Pressure = Idling engine normal indication is ___ psi to ___ psi

5 to 20 psi (idling)

24

Ammeter/Voltmeter - If no positive rise within ___ seconds, engine must be shut down

a few seconds

25

Voltmeter - No less than ___ volts or within green range

13.75 volts

26

Clutch - Play is no more than ___ inches from the top, smooth operation

2 inches

27

Steering Wheel - Ensure that free play does not exceed ___ degrees or ___ inches on a 20 inch wheel

10 degrees or 2 inches

28

Brake Check
When starting the 7 Step Air Brake Check, the Air Gauge reads ___ psi

Air Gauge reads 120 psi

29

Step 1 - Air Pressure Loss Rate (Straight Truck)
Static Pressure Check - Pressure loss no more than ___ psi in 1 minute

2 psi

30

Step 1 - Air Pressure Loss Rate (Straight Truck)
Applied Pressure Check - With application of brake, pressure loss no more than ___ psi in 1 minute

3 psi

31

Step 1 - Air Pressure Loss Rate (Combination Vehicle)
Static Pressure Check - Pressure loss no more than ___ psi in 1 minute

3 psi

32

Step 1 - Air Pressure Loss Rate (Combination Vehicle)
Applied Pressure Check - With application of brake, pressure loss no more than ___ psi in 1 minute

4 psi

33

Step 2 - Low Air Pressure Warning Device/Light
Activates at ___ psi

60 psi

34

Step 3 - Emergency Brake
Activation at ___ psi to ___ psi

20 to 40 psi

35

Step 3 - Emergency Brake
Release lever is ___ to release

Unable to release

36

Engine start is at ___ rpm

1000 rpm

37

Step 4 - Compressor Buildup Rate
Low Air Pressure Warning Device/Light goes out after ___ psi

60 psi

38

Step 4 - Compressor Buildup Rate
Secondary Tank Pressurization - Air gauge holds at ___ psi until filled

80 psi

39

Step 4 - Compressor Buildup Rate
Gauge Reading - Movement from ___ psi to ___ psi within ___ seconds

85 to 100 psi within 45 seconds

40

Step 5 - Governor Cut-In / Cut-Out
Cut-Out - Air gauge stops at ___ to ___ psi with relief valve activation

120 to 125 psi

41

Step 5 - Governor Cut-In / Cut-Out
Cut-In - After air gauge drops below ___ psi, air gauge shows increase

100 psi

Note: no increase in pressure between 110 to 120 psi

42

7 Step Air Brake Check

1 - Air Pressure Loss Rate
2 - Low Air Pressure Warning Device/Light
3 - Emergency Brake
4 - Compressor Buildup Rate
5 - Governor Cut-In / Cut-Out
6 - Parking Brake (engaged)
7 - Service Brake

43

Engine Hour Meter - Measures actual running time to the nearest ___ hour

1/10 hour

44

Voltmeter - With ignition switch "ON", the voltmeter will read between ___ V to ___ V

12 V to 13 V

45

Voltmeter - With the generator or alternator running at 800 rpm or above, there should be a reading of ___ V to ___ V

13.8 V to 14.4 V

46

Voltmeter - Anything less than ___ V or over ___ V indicates that the regulator is not set correctly

Less than 13.8 V or over 15 V

47

Oil Pressure Gauge - While operating the apparatus and the oil pressure drops below ___ psi, the engine must be shut down

Below 10 psi

48

Oil Pressure Gauge - At idle speed, oil pressure should be ___ psi to ___ psi

5 to 20 psi

49

Oil Pressure Gauge - At operating speed, oil pressure is normally ___ psi to ___ psi

40 to 60 psi

50

Temperature Gauge - Normal range is ___ F to ___ F

140 to 160 F

51

Temperature Gauge - Engine may be run when the coolant temperature is above ___ F, but cannot exceed ___ F

May be run above 190 F
Cannot exceed 205 F

52

Temperature Gauge - Coolant that consistently runs over ___ F under normal conditions must be reported to the Shop

Over 190 F

53

Temperature Gauge - Under no condition will a unit be operated with the coolant temperature above ___ F

Above 205 F

Water turns to steam at 212 F

54

Fuel Gauge - Do not operate the tank when the fuel level is below ___

Half Tank

55

Fuel Gauge - As much as possible, keep the fuel supply tank full to minimize ___

Condensation

56

Fuel Pressure Gauge - Fuel pressure gauge readings should be about ___ psi at 1000 rpm and ___ psi at idle speed

50 psi at 1000 rpm
10 psi at idle

57

Air Pressure Gauge - A range of ___ psi to ___ psi should be maintained while driving

100 psi to 120 psi

58

Air Pressure Gauge - The apparatus must be stopped when the pressure falls and remains below ___ psi

100 psi

59

Thermostat - Thermostat is usually set to open at ___ degrees F

170 degrees F

60

Parking Brake - The parking/emergency brake unit requires approximately ___ pounds of air pressure before brakes can be released, at which time the warning buzzer and light will go off

60 pounds of air pressure

61

Starter - Do not run starter for more than ___ seconds

10 seconds

62

High idle speed is ___ rpm to ___ rpm

800 rpm to 1000 rpm

63

Engine should warm to a minimum temperature of ___ degrees F

140 degrees F

64

Starting (Check Gauges)- Oil pressure shows ___ psi to ___ psi within a few seconds

5 psi to 20 psi

65

Starting (Check Gauges) - Air pressure gauge should reach ___ psi within 45 seconds when air pressure reaches 85 psi

100 psi

66

Starting (Check Gauges) - After 10 minutes, temperature should show at least ___ degrees F

140 degrees F

67

Starting (Check Gauges) - Unit should not be moved if air pressure drops to less than ___ psi

90 psi

68

Road Operation - Proper cruising range is ___ rpm to ___ rpm

1400 rpm to 1800 rpm

69

Warning Device Placement
On a one-way divided highway, place warning devices ___ feet, ___ feet, and ___ feet toward the approaching traffic

10 feet
100 feet
200 feet

70

Warning Device Placement
If you must stop on the side of the road, you must place your emergency warning devices within ___ minutes

10 minutes

71

Warning Device Placement
Two-lane road carrying traffic in both directions or on an undivided highway, place warning devices within ___ feet of the front or rear corners to mark the location of the vehicle and ___ feet behind and ahead of the vehicle on the shoulder or in the lane you stopped in

10 feet
100 feet

72

Warning Device Placement
Back beyond a hill, curve, or other obstruction that prevents other drivers from seeing the vehicle within ___ feet

500 feet