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