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Maintenance Flashcards

1
Q

Inspect apparatus at least ______, within______, or _________

A

Weekly, within 24 hours after use or repair, or prior to being place in service

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2
Q

List all 10 places where you can find emergency apparatus related laws and regulations

A

NFPA, EPA,DOT, ARS, ADOT, OSHA, NTEA, ADEQ, TFD Manual of Operations, TFD Master Memos, Vehicle Data Plates

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3
Q

What does NTEA stand for?

A

National Truck Equipment Association

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4
Q

What does ADEQ stand for?

A

Arizona Department of Environmental Quality

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5
Q

What is the PM interval scheduling for frontline pumpers, ladders and medics? Reserve rigs?

A

3500 miles or 250 engine hours.
3 months for all frontline
6 months for reserves

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6
Q

How many different PM levels are there?

A

Pumpers, medics, support equipment- 4 levels

Ladders- 6 levels

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7
Q

What are the 4 things involved on an apparatus road worthy test?

A

Accelerate to 35 mph within 25 seconds
Come to a full stop within 35 feet from 20 MPF
Top speed of 50 mph
Parking brake hold on a 20% grade

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8
Q

When are pump tests performed?

A

From the factory
Upon delivery
Annually
After major repair of pump OR drive component

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9
Q

When does NFPA mandate an aerial test?

A

Every 5 years

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10
Q

When does TFD test aerials?

A

Every year

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11
Q

What is NFPA standard is Standard for Apparatus Driver/Operator?

A

NFPA 1002

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12
Q

What NFPA is Standard for Emergency Vehicle Technician Qualifications?

A

NFPA 1071

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13
Q

What are the levels of EVTs?

A

Level I, Level II, and Master Level III

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14
Q

What NFPA is the Standard for Fire Department Occupational Safety and Healt?

A

NFPA 1500

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15
Q

Which NFPA is the Standard for Automotive Fire Apparatus?

A

NFPA 1901

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16
Q

Which NFPA standard would talk about fire pump service tests?

A

NFPA 1911 Standard for the Inspection, Maintenance, Testing, and Retirement of In-Service Emergency Vehicles

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17
Q

Which NFPA is the Testing Fire Department Aerial Devices?

A

NFPA 1914

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18
Q

Which NFPA is for the Standard for Fire Department Preventive Maintenance Program?

A

NFPA 1915

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19
Q

Are engineers qualified to decide whether or not a truck is safe to operate?

A

YES

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20
Q

When must you turn off the TELMA?

A

During slippery conditions

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21
Q

What are 5 forms/packets you can find along side the apparatus log book?

A 
Accident packet
Injury report
Property damage form
SCBA inspection form
Ground ladder inspection form
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22
Q

What are 7 items you can find in the apparatus log book?

A 
Data sheets
Inspection instructions
Checklists
Monthly fuel and oil records
Maintenance request forms (old and new)
Reserve apparatus forms
Hose change record
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23
Q

For an engine to operate, air needs to bee ____ and ____

A

Cool and dry

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24
Q

Use your senses to find what 6 things when checking out a mechanical engine?

A 
Leaks
Knocks
Misses
Strange noises
Strange smells
Improper operation
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25
When it comes to air flow, remove from service when there is an activated...
Air filter restriction indicator light
26
Molecule of air through fire apparatus engine...
Turbo compressor Charge air cooler Engine cylinder Turbo turbine
27
8V-92 TA | Detroit Diesel
``` 2 Stroke Mechanical Control 450-470 HP 1550 Torque 5-80psi oil pressure Coolant 160-210 Max coolant 220 40W oil Only ```
28
Series 40 | Detroit Diesel
``` 4 Stroke Mechanical/Electronic Control 300-330 HP 950 Torque Oil Pressure 20-70psi Coolant 180-205 Max coolant 230 15W-40 oil only ```
29
Series 60 | Detroit Diesel
``` 4 stroke Electronic Control 290-515 HP 1550 Torque Oil pressure 5-65psi Coolant temp 160-210 Max coolant 230 15W-40 Oil only ```
30
Cummins ISC
``` 4 Stroke Electronic Control 330 HP 950 Torque Oil pressure 20-80psi Coolant Temp 170-210 Max Coolant 230 15W-40 Oil Only ```
31
Cummins ISL
``` 4 Stroke Electronic Control 370-400 HP 1200 Torque Oil pressure 20-80psi Coolant temp 180-212 Max Coolant 230 15w-40 Oil only ```
32
MBE 900
``` 4 Stroke Electronic Control 330 HP 1000 Torque Oil pressure 10-60psi Coolant Temp 180-212 Max Coolant 230 15W-40 Oil only ```
33
Cat C7
``` 4 Stroke Electronic Control 330 HP 1200 Torque Oil pressure 10-65 psi Coolant 165-215 Max Coolant 230 15W-40 Oil only ```
34
International DT 466 and 530
``` 4 Stroke Electronic Control 195 HP 500 Torque Oil pressure 20-70psi Coolant 180-215 Max Coolant 230 15W-40 ```
35
On a diesel engine, use your sense to find...
Leaks, knocks, misses, noises, smells, and improper operation
36
An air filter is designed to...
Remove particulates from the air that can damage an engine without restricting airflow
37
With an air filter, do not...
Blow air into it to clean Remove it or make adjustments It can take up to an hour to properly align one. It could cause engine to De-rate
38
The thing called where the air filter meets the body or something...
Transition plate
39
What is a blower on a diesel engine?
Used to scavenge cylinders in a 2 stroke Does not increase HP Air box must remain open to prevent engine damage
40
Intercooler is called...
Charge Air Cooler
41
Turbochargers are ____ lubricated
Oil
42
VGT...
Variable Geometry Turbocharger | Turbo that moves the turbine more in or out of the exhaust flow
43
Turbocharger life can be maximized by allowing the engine to idle for...
1-2 minutes before shutdown
44
Route of air...
``` Ember separator Air filter Turbo compressor Charge air cooler Intake manifold Combustion cylinder Exhaust manifold Turbo turbine Exhaust pipe ```
45
Is plugged filter indicator an OOS item?
Yes
46
Fuel system consists of...
``` Fuel Tank Fuel Lines Fuel Filter Fuel Pump Injectors ```
47
Keep fuel tank full to prevent...
Moisture buildup
48
Class 2 fuel leak...
OOS
49
With fuel, most contamination comes from...
Fuel Cap
50
Fuel is also used to...
Cool and lubricate injection system
51
Fuel filters are changed during ___ level PM
B level
52
Fuel lines contain both ___ and ___ pressure fuel
High and Low
53
Fuel pump...
Low pressure Supplies injection pump Integrated into primer pump
54
Injection pump...
High pressure fuel | Individual delivery valves
55
What is the governor control on a mechanically controlled engine?
The injection pump
56
What are the 5 types of fuel injectors on a diesel fire apparatus?
``` Mechanical unit Electronic unit HEUI Common rail Pencil ```
57
What does HEUI stand for?
Hydraulic Electronic Unit Injectors
58
What is the pressure on HEUI injectors?
500-3600 psi
59
What is the HEUI Oil Activation Pump?
High pressure oil pump Supplies high pressure oil to activate HEUI injectors Used on both mechanical and electronic engines
60
The lubrication system consists of...
``` Engine oil Oil filters Oil dipstick Oil sensors Oil cooler and relief valves ```
61
Remove from service if there is a class ___ oil leak.
Class 3
62
When do you check engine oil?
Level surface, cold, or after at least 5 minutes after shutdown.
63
Maintain oil level between...
Add and full
64
An overfilled crankcase may indicate...
Excessive oil | Water and/or fuel in crankcase
65
An underfilled crankcase may indicate...
Fuel system problems
66
Oil filters...
Designed to filter harmful contaminants from the engine oil Integrated bypass valve for cold weather operation or filter restriction Replaced during each PM
67
What are oil pressure sensors used for?
Engine performance management Charging systems Vehicle interlocks
68
Lubrication key points...
Class 3 leak is OOS Proper oil use is critical Refer to data sheet if unsure Oil level is critical in HEUI injection systems Overfull oil level level could indicate-Overfilled, fuel and/or coolant in oil Keep level between add and full
69
What does the cooling system consist of?
``` Radiator Reservoir Water pump Thermostat Hoses ```
70
What is the ratio of antifreeze and water?
50/50
71
How do you check coolant level?
Through sight glass or 2" below radiator neck
72
What is the rule of thumb for max coolant temperature?
220
73
What is OOS for coolant?
Class 3 leak
74
What kind of water can you add to coolant in the field?
Distilled water
75
Don't twist the....
Serpentine belts
76
V-belts are allowed ___ of deflection
1/2 inch
77
With cooling system, be aware of...
Leaks Noisy bearings in tensioners, pulleys, and water pumps Fan when deep water fording Leaks from pump weep hole
78
What is the coolant flow?
``` Engine Thermostat Radiator Water pump Back to engine ```
79
PH for coolant in Diesel should be...
Between 8-11
80
Coolant filters are designed to...
``` Filter impurities like sand and rust Condition coolant by softening water to minimize scale Maintain acid free condition Act as rust preventative Corrosion inhibitor They are replaced during B PMs ```
81
The water pump is ___ driven
Gear
82
Diesel engines use ___ type thermostat
Blocking
83
Coolant system damage...
Loose ground cables create stray electrical current Calcium impedes the transfer of heat Chloride decarbonizes iron
84
What is linear cavitation?
When there is an implosion of water on cylinder wall that can cause damage
85
What are the exhaust system components?
``` Exhaust manifolds Turbocharger Exhaust piping Engine brake Emissions ```
86
When it comes to exhaust, what is considered out of service?
Any exhaust leak
87
A submerged tailpipe can...
Stall the engine
88
Exhaust leaks at the manifold will...
Reduce engine performance
89
An exhaust brake is also known as a...
Pac Brake
90
An exhaust brake is a_____ activated valve
Pneumatically
91
Where is the exhaust brake located?
Between the exhaust manifold and the muffler
92
What does the exhaust brake do?
It restricts exhaust flow from the engine
93
How are emissions test dates determined?
The last digit of the shop number equals the month | There is no testing in November or December
94
When are brand new diesel units tested?
On the fourth year of service
95
Pertaining to diesel exhaust... what does SCR stand for?
Selective Catalytic Reduction
96
What is DEF made out of?
32.5% urea and 67.5% deionized water
97
What determines DEF shelf life?
Storage Temperature
98
What are the properties of DEF?
Non toxic Non polluting Non Flammable
99
What is the PH of DEF?
Approx 9
100
When does passive regeneration occur?
During normal engine operation
101
When does active regeneration occur?
When exhaust temps are not high enough to passively regenerate
102
What is the difference between the amber "check engine" and the red "stop engine"?
Amber check engine indicates a non-critical system fault. You can drive the vehicle to the end of the shift Red stop engine indicates a serious engine fault that may result in damage has occurred. Shut down as soon as possible
103
What is the HEST light?
High Exhaust System Temperature Indicates that active regeneration has been initiated and the exhaust temps will be elevated above normal. The light will remain on until the exhaust temps have dropped below 977. If the light is on and the speed is dropped below 5mph, the light will remain on until the speed increased 3mph above the threshold and the regen process finishes
104
What is the DPF light?
Diesel Particulate Filter Indicates that the filter has not been able to regenerate under the previous engine operating conditions and is in need of assistance in order to perform an active regeneration.
105
What are the different stages of the DPF light?
On solid (indicates low to medium levels of particulate build up) Flashing (indicates medium to high levels of particulate build up and a signal that a DPF regeneration is needed) Flashing with amber Engine Warning light (indicates a high level of particulate build up and a DPF cleaning is required immediately)
106
DEF Level Low Level Light
Know what it looks like. Indicates that DEF is low
107
What are the exhaust system key points?
Leaks are OOS Leaks reduce engine power New exhaust systems have lower clearance Be aware of raised surfaces Pay attention to exhaust indicator lights on new rigs Be able to recognize passive, active or stationary regeneration
108
What are the components of the electrical system?
``` 12v Electricity Batteries Cables and wiring Starter Alternator and voltage regulator Shoreline charger Load manager ```
109
Remove rig from service with an __________ charging system
Inoperative
110
Voltage is like electrical ______ Amperage is like electrical______ Resistance is like electrical ______
Pressure Flow Friction loss
111
How many volts will damage the computer?
16v+
112
How low of volts will affect computer performance?
11v or less | It may shut down the engine and may cause erratic shifting
113
With the ampmeter, the operating amperage should be....
Positive
114
_____v is fully charged | _____v or less is bad battery
12. 6v | 9. 6v
115
What are we inspecting on batteries?
``` Cables Hold down Connections Terminal corrosion Electrolyte level Case (damage/cracks) ```
116
Can we remove battery cables?
No
117
Do not crank starter for longer than___ seconds without cooling for ___ seconds
Start 15 | Cool for 60
118
Amperage range of our alternators...
270-320 amps
119
Alternators are ____ and ____ regulated.
Internally and externally
120
What is proper voltage range?
13.8-14.5
121
What determines alternator output?
Field voltage
122
The onboard battery charger will not ____ or ____ the batteries
Overcharge or damage
123
The amperage on the plug receptacle does or does not represent the output voltage of the shoreline charger?
Does not

Engineer Cert (9 decks)

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