Driver Training - Important Numbers Flashcards
1
Q
Windshield - No cracks greater than ___ inches or ________ cracks of any length.
A
2 inches
Intersecting
2
Q
Leaf Springs - No more than ___ % missing, damaged, or broken.
A
25%
3
Q
Slack Adjuster - Push-rod travel no more than ___ inch.
All slack adjusters should be ___ inch of each other.
A
1 inch
1/2 inch
4
Q
Slack Adjuster Power Stroke - With brake pedal depressed, slack adjuster extends out no more than ___ inches.
A
2 inches
5
Q
Drum Brake Pads - At least ___ inch of material, evenly worn
A
1/8 inch
6
Q
Rotor Brake Pads - At least ___ inch of material
A
1/4 inch
7
Q
Front Wheel - Tread depth no less than ___ inch
A
4/32 inch
8
Q
Hub Oil Seal Sight Glass - Oil level at least ___.
A
Half way
9
Q
Battery Cells - Specific gravity of a fully charged battery
A
1.260 - 1.280 (fully charged)
10
Q
Battery Cells - Specific gravity of a 75% charged battery
A
1.225 - 1.259 (75% charged)
11
Q
Battery Cells - Less than ___ % specific gravity requires battery to be charged
A
75%
12
Q
Engine Oil - Level between ___ and ___
A
“Add” and “Fill”
13
Q
Engine Oil - Color and Viscosity
A
Color
- Amber (good)
- Whitish (water in system)
- Blackish (old)
Viscosity
- Smooth
- No feel of grit or metal particles
14
Q
Coolant - Level should be no more than ___ inches from cap.
___ mixture of coolant and clean water
A
2 inches
50/50
15
Q
Power Steering - Level between ___ and ___
A
“Add” and “Fill”
16
Q
Power Steering - ___ inch to ___ inch belt deflection
A
1/2 inch to 3/4 inch belt deflection
17
Q
Water Pump - ___ inch to ___ inch belt deflection
A
1/2 inch to 3/4 inch belt deflection
18
Q
Alternator - ___ inch to ___ inch belt deflection
A
1/2 inch to 3/4 inch belt deflection
19
Q
Rear Wheel - Tread depth no less than ___ inch
A
2/32 inch
20
Q
Low Pressure Warning Device - Light/buzzer activates below ___ psi
A
60 psi
21
Q
Oil Pressure - If no increase within ___ seconds, engine must be shut down
A
a few seconds
22
Q
Oil Pressure - Operating engine normal indication is ___ psi to ___ psi
A
40 to 60 psi (operating)
23
Q
Oil Pressure = Idling engine normal indication is ___ psi to ___ psi
A
5 to 20 psi (idling)
24
Q
Ammeter/Voltmeter - If no positive rise within ___ seconds, engine must be shut down
A
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 - Static Air Pressure Loss Rate (Straight Truck)
| Static Pressure Check - Pressure loss no more than ___ psi in 1 minute
2 psi
30
Step 1 - Applied 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 - Static Air Pressure Loss Rate (Combination Vehicle)
| Static Pressure Check - Pressure loss no more than ___ psi in 1 minute
3 psi
32
Step 1 - Applied 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 before pressure drops below ___ psi
| Activates at ___ psi
60 psi
34
Step 3 - Emergency Brake
Emergency brake activates at around ___ to ___ psi.
| Activation at ___ psi to ___ psi
20 to 40 psi
35
Step 3 - Emergency Brake
Test the parking brake to ensure that it is ____ to ____.
| Release lever is ___ to release
Unable to release
36
Engine start is at ___ rpm until ___ psi.
1000 rpm
80 psi
37
Step 4 - Compressor Buildup Rate
The low air warning should stop as the pressure rises over ___ psi.
| Low Air Pressure Warning Device/Light goes out after ___ psi
60 psi
38
Step 4 - Compressor Buildup Rate
Secondary Tank Pressurization
In most apparatus, the primary tank fills first and holds at ___ psi until the secondary tank begins to fill. Some apparatus have gauges labeled "___" and "___".
| Secondary Tank Pressurization - Air gauge holds at ___ psi until filled
80 psi
"Front" and "Back"
In both types, as pressure in the second tank catches up to the pressure in the first tank, the needles should begin to rise together.
39
Step 4 - Compressor Buildup Rate
When both gauges rise, check to see that the pressure builds from ___ to ___ psi in ___ seconds or less
| Gauge Reading - Movement from ___ psi to ___ psi within ___ seconds
85 to 100 psi
45 seconds
40
Step 5 - Governor Cut-In / Cut-Out
Cut-Out
The governor should turn the compressor off at ___ to ___ psi.
| 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
Release the parking brake and fan service brakes. Air pressure should show no rise between ___ and ___ psi. Continue to fan brakes slowly until pressure drops below ___ psi.
| Cut-In - After air gauge drops below ___ psi, air gauge shows increase
No rise between 110 and 120 psi
100 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 water temperature range is ___ F to ___ F (operating) and ___ F to ___ F (idling)
160-190 F (operating)
140 to 160 F (idling)
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
73
Steering linkage components
Pitman Arm
Drag Link
Steering Arm
Tie Rod End
Tie Rod
Castle Nut
74
Front suspension components
Spring Mounts
Leaf Springs
Retaining Clips
U-Bolts
Shock Absorber
75
Drive shaft components
Drive Shaft
Universal Joints
Couplings
76
Rear suspension components
Spring Mounts
Leaf Springs
Retaining Clips
U-Bolts
Shock Absorber
77
Flat mirror should be adjusted to allow a ___ to ___ foot view out to the side of the vehicle.
2 to 3 foot view
78
Fire extinguisher minimum size: ___
2A 10BC
79
Before starting brake check, ensure the following:
Level Ground
Wheels Chocked
Parking Brake (Anchor-Lock) Released
Area Clear
Air Gauge Reads 120 psi
Engine Off
Ignition On
80
Step 6 - Parking Brake
Parking brake released
Transmission in lowest gear
Slowly release clutch
Attain 5 mph
Depress clutch
Apply parking brake
Brake should stop truck
81
Step 7 - Service Brake
Parking brake released
Transmission in lowest gear
Slowly release clutch
Attain 5 mph
Depress clutch
Apply pressure to service brake
Hands on steering wheel
82
Step 7 - Service Brake
Service Brake Indications
No unusual feel when applying service brake
Steering wheel should not pull to one side
83
Vehicle Inspection
If the truck is not level, it may indicate a problem with the ___, ___, or ___.
Tires
Suspension
Load
