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IFSTA Ch. 2&3 > IFSTA 2 & 3 > Flashcards

IFSTA 2 & 3 Flashcards

1
Q

Definition of maintenance

A

keeping apparatus in state of usefulness or readiness

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2
Q

Definition of repair

A

restore that which has become inoperable or out of place

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3
Q

What does PM do (benefits)

A

-ensure reliability,
-reduce freq and cost of repairs,
-reduces OOS times

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4
Q

Goal of PM

A

eliminate unexpected and catastrophic failures that may endanger firefighters and the general public

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5
Q

What standard train and certify mechanics and manager

A

NFPA 1071 Stand for Emerg Vehicle Tech Prof Qualifications

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6
Q

What standard ensures drivers able to perform maint

A

NFPA 1002

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7
Q

What standard defines the OOS criteria

A

NFPA 1911

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8
Q

Where are some of the most vulnerable areas of the vehicle

A

The engine compartment, where linkages, fuel injectors, and other controls may become inoperable due to dirt

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9
Q

Fuel injectors should be checked

A

while they have no external movable parts, they are a source of collection of dirt and oil

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10
Q

What areas are better seen when no dirt or residue

A

Suspension, brake parts, spring shackles, driveline, steering

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11
Q

When road brine dries it forms dust that can

A

stick to undercarriage and corrode electrical connections, when water is applied it reactivates, a neutralization solution should be considered

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12
Q

Steam or pressure cleaning can

A

strip away lubrication, impact wiring harnesses and connections

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13
Q

For new apparatus and paint

A

First 6 months use cold water, no nozzle, rinse dirt before soap

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14
Q

Failure to dry after cleaning can

A

cause corrosion

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15
Q

Automotive glass cleaning with

A

soapy water or commercial glass cleaner, no shop towels use paper towels

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16
Q

How long to wait before waxing exterior

A

6 months

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17
Q

CDL required when GVWR is

A

26,001 pounds or more

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18
Q

What two inspections are done during the walk around method

A

-Operational readiness inspection
-pretrip road worthiness inspection

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19
Q

Operational readiness inspection

A

inspect apparatus and equipment to ensure all equipment is in place, clean, and ready for service

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20
Q

Pretrip Road Worthiness inspection

A

visual inspection to ensure major components of chassis are present and in proper working condition

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21
Q

Functional Check

A

an inspection where a certain system or component is operated to ensure that it is functioning properly

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22
Q

Where to start the walk around

A

at the driver’s door in a clockwise pattern

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23
Q

Approaching vehicle for inspection

A

problems from distance such as body damage, terrain vehicle is resting, fluid leaks

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24
Q

How many harmful chemicals are in diesel exhaust

A

up to 100 harmful chemicals

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25
Q

Most important tire check

A

tire type, condition, inflation

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26
Q

Tires should never be

A

mixed between radial and bias-ply and be same size and weight rating

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27
Q

Maximum weight an axle system can safely carry

A

Gross Axle Weight Rating

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28
Q

What determines the tire selection

A

GAWR

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29
Q

Over or under pressure tires will cause

A

damage tires, poor handling, excessive fuel consumption

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30
Q

Tire inspection includes

A

-proper tread depth,
-tread separation,
-cupping,
-wear sidewall,
-impaled,
-drying,
-cracks,
-rotting

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31
Q

NFPA 1911 requires tires to be replaced every

A

seven years

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32
Q

Old tires lead to

A

blow out, especially with low miles driven

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33
Q

Load Management System

A

sheds electrical load in an order if voltage drops

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34
Q

Overload

A

operation of equipment or conductor in excess of its rated capacity. May lead to overheating or damage

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35
Q

Load Sequencer

A

turns lights on in intervals so start up doesn’t occur at same time

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36
Q

Load Monitor

A

Device that watches loads that may threaten to overload

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37
Q

Load Shedding

A

When overload occurs, load monitor will shut down less important electrical equipment

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38
Q

Manual transmission free play

A

amount of travel before clutch begins to disengage engine from transmission

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39
Q

Throw Out bearing

A

what pushes on the clutch fingers to disengage clutch from engine

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40
Q

Steering wheel play should be

A

no more than 10 degrees in either direction, 20 inch wheel would be 2”.

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41
Q

Excessive steering wheel play could cause

A

loss of control during driving

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42
Q

Curb weight is the weight

A

of the vehicle empty

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43
Q

GVWR is

A

max weight a vehicle can be safely operated

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44
Q

Over grossed

A

vehicle in excess of GVWR

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45
Q

Side to side variance in weight per NFPA 1901 and 1911

A

not exceed 7%

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46
Q

antilock brakes are

A

electronic system that determines locked wheel, temporary release of brake to prevent skidding

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47
Q

Air-Actuated Braking System

A

uses compressed air to hold off spring brake (parking) and applies air pressure to service brake for stopping

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48
Q

Air pressure protection valve

A

prevents air horns and other non-essential devices when pressure drops below 80 psi

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49
Q

Brake test shall be done

A

Annually, using method outlined in NFPA 1911

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50
Q

Slack Adjusters

A

Compensate for brake pad wear

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51
Q

Cabs with fluid inspection doors should be tilted

A

every week

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52
Q

DPF stands for

A

Diesel Particulate Filter

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53
Q

SCR stands for

A

Selective Catalyst Reductant, exhaust after treatment

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54
Q

DEF stands for

A

Diesel Exhaust Fluid, injected downstream of DPF to reduce nitrogen oxide (Nox) in exhaust gas

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55
Q

Lubrication effectiveness depends on

A

proper grade, frequency, amount, method

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56
Q

SAE number and meaning

A

Society of Automotive Engineers - indicates only viscosity

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57
Q

Other oil characteristics

A

corrosion protection, foaming, sludging, carbon accumulation, controlled by refiner

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58
Q

Lubrication over pumping creates

A

overpressure that may damage rubber seals

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59
Q

Battery connections should be

A

tight, protected with grease, jelly, protection product

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60
Q

Most batteries contain

A

lead and sulfuric acid, check for leaking acid

61
Q

Batteries also give off what when charging

A

hydrogen gas that is highly explosive

62
Q

Before jumping a vehicle ensure

A

other vehicle has same voltage electrical system, follow manufacturers instructions, connect in order

63
Q

Post Maintenance Repair Inspection

A

ensure operation in accordance with initial design

64
Q

Axle gear oil issues

A

Slight seepage ok, trails on wheel or tire is bad

65
Q

Bulges in tires should be less than

A

3/8”

66
Q

Dual tires should not

A

touch each other or other components

67
Q

Engine should be run at what until reached operating temp

A

low idle

68
Q

Before checking audible warning devices

A

wear hearing protection

69
Q

If the vehicle has power steering system, free play

A

If the vehicle has power steering system, free play

70
Q

Air brake checks

A

Engine off, chocked, neutral, release E brake, press brake to floor one minute, air psi should not drop below 3 psi, 4 psi tractors

71
Q

Air brake check, pump brakes

A

warning light and buzzer activation at 60 psi

72
Q

Air brake check, E brake activation

A

between 20-40 psi

73
Q

Air Compressor should cut out at

A

120-130 psi

74
Q

Air brake check after 130 psi

A

Pump brakes down to 85 psi then observe needle rising

75
Q

Road Brake test

A

at 5 mph apply brakes, stop within 20 feet, no pulling, strong pedal

76
Q

E brake test

A

same as road

77
Q

Air brake check, after E brake activation

A

Start engine, should have 85-100 psi within 45 secs at full rpm

78
Q

Additional air brake test

A

Engine off, pump brakes, pressure down, start engine, ensure air pressure at least 90 psi in 60 seconds

79
Q

How to clean corrosion of batteries

A

Baking soda and water, wire brush, rinse with water and dry. Water can lead to parasitic current

80
Q

Dirt dust or water on top of batteries can

A

bleed current between terminals

81
Q

2010 LODD Deaths during travel

A

17 deaths

82
Q

NFPA standard for drivers

A

NFPA 1002

83
Q

Minimum standard for driver

A

Firefighter 1

84
Q

NFPA 1582 Occupational medical program areas

A

Visual acuity and adequate hearing

85
Q

Driving under the influence of alcohol is both

A

Gross negligence but recklessness

86
Q

Reckless Disregard

A

conscious awareness of danger, while ignoring any potential consequences of doing so, harsher than ordinary negligence

87
Q

Negligence

A

Breach of duty in which person or organization fails to perform to a standard required

88
Q

Gross Negligence

A

Willful and wanton disregard

89
Q

Due Regard

A

duty and responsibility to drive for safety of others

90
Q

Driver is not protected from legal consequences if

A

driving with reckless disregard

91
Q

Most common place for a collision to occur

A

intersection

92
Q

Situational awareness

A

perception of one’s surrounding environment and the ability to anticipate future events

93
Q

Seven basic causes of collisions

A

Improper backing,
reckless driving,
excessive speed,
lack of skill/experience,
overload or misuse,
mechanical failure,
driver personal readiness

94
Q

Brake fade

A

loss of braking function which occurs due to excessive use

95
Q

Common lack of driving skills

A

overconfidence, inability to recognize danger, security of good driving record, misunderstanding of apparatus capabilities, insufficient training

96
Q

Loading hose moving vehicle

A

forward only, no more than 5 mph

97
Q

Most common driver injury

A

slips and falls when entering or exiting

98
Q

Idling diesel engines may

A

cause carbon build up in injectors, valves, pistons

99
Q

HEST indicator

A

High Exhaust System Temperature, active regen

100
Q

DPF indicator

A

filter is loading up with soot

101
Q

Regen Inhibit switch

A

prevents active regen if near fire hazard

102
Q

May not burn off soot if

A

short runs or cold climate

103
Q

Active regen is automatic or manual

A

automatic if engine load, temp and speed are acceptable, engine begins dosing fuel into exhaust stream to raise exhaust temp.

104
Q

If DEF tank is low

A

derate ( reduce torque output) or limit vehicle speed

105
Q

If engine is hot don’t shut off, idle for at least

A

3-5 minutes

106
Q

Issues with turning off a hot engine

A

increase temp due to no circulation, oil burning on hot surfaces, damage to heads and exhaust manifolds, damage to turbochargers that can result in seizure

107
Q

Never what before shutting down engine

A

Rev engine

108
Q

If you shut off an engine before stopping

A

fuel injectors may prevent from opening, and no lubrication

109
Q

Ramp breakover angle

A

From front of rear tire to frame midpoint of wheelbase

110
Q

Law of inertia

A

In motion remain, rest remain until acted on by force

111
Q

Engine governor cannot control speeds going

A

downhill

112
Q

Over throttling

A

injecting or supplying diesel engine with more fuel than it can burn

113
Q

Railroad crossing with no space after

A

19824 locations, 100 feet or less, 122 accidents annually

114
Q

which side of hills may have ice

A

northern side

115
Q

how many times more to stop on snow or ice

A

3-15 times greater

116
Q

Driving considerations

A

Aim high in steering, get the big picture, keep eyes moving, leave an out, distance from vehicle ahead, make sure others see and hear you

117
Q

Studies show motorist respond better to

A

sounds that change pitch

118
Q

What speed can you out run an audible siren

A

50 mph

119
Q

Increasing speed by 20 mph can decrease audible distance

A

by 250 feet or more

120
Q

When responding along same route with others

A

300-500 foot distance

121
Q

what reduces effectiveness of reflective trim

A

warning lights and spot lights

122
Q

On multilane roads, always travel on the

A

inner most lane so drivers can pull to right

123
Q

Visual lead time

A

time needed to stop or perform evasive maneuver

124
Q

Braking distance

A

distance from time brakes are applied until it stops

125
Q

Reaction Distance

A

distance from time release accelerator to brake pedal

126
Q

Total Stopping Distance

A

sum of driver reaction and vehicle braking distance

127
Q

Common causes of driver error

A

1) too fast for road conditions
2) failing to anticipate obstacles
3) improper use of auxiliary braking devices
4) improper tire psi or tread depth

128
Q

Acceleration skid and actions

A

gas pedal applied too quickly, ease off accelerator, straighten front wheels

129
Q

Locked wheel skid

A

braking too hard, ease off brakes and straighten wheel

130
Q

ABS activation

A

maintain steady pressure on brake pedal, do not pump

131
Q

Non ABS skid, contrary to above note to steer straight

A

Release brake and steer in direction vehicle should be traveling

132
Q

Auxiliary brakes required on all GVWR greater than

A

36,000 pounds

133
Q

Four types of auxiliary brakes

A

Exhaust brake,
transmission output retarder,
engine compression brake,
electromagnetic retarder

134
Q

Highest amount of braking torque

A

transmission output and electromagnetic

135
Q

Which are unaffected by transmission gear shifts

A

transmission output retarder and electromagnetic

136
Q

What causes skid in inclement weather with aux brakes

A

sudden torque placed on the vehicle may reduce friction of tires

137
Q

Exhaust brake

A

creates back pressure by restricting exhaust

138
Q

Engine compression brake

A

compresses intake air converts mechanical energy to heat

139
Q

Electromagnetic retarders have less efficiency

A

at high ambient temps because heat transfer is thru cooling vanes

140
Q

Transmission retarders

A

send transmission fluid to retarder and opposing action of spinning vanes slows driveline. Temperature is an issue

141
Q

Automatic tire chains may be ineffective in snow

A

deeper than 3 to 6 inches, driving slow, or in reverse

142
Q

DCDL

A

Driver Controlled Differential Lock

143
Q

DCDL locks

A

wheels turn at same speed, avoid when downhill or turning

144
Q

Interaxle Differential Lock

A

locks out interaxle differential. Full torque to each wheel

145
Q

Backing spotter position

A

8-10 feet behind apparatus

146
Q

How many blasts of air horn before backing

A

two

147
Q

NFPA vehicle operations training

A

NFPA 1451

148
Q

Hydraulic fluid psi of what can puncture skin

A

100 psi, can lead to gangrene, amputation, death

149
Q

If oil pressure what shut down the engine

A

Does not fall within manufacturers recommendation in 5-10 sec

IFSTA Ch. 2&3 (1 decks)

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