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Engineers exam > Pre-Trip > Flashcards

Pre-Trip Flashcards

1
Q

Brake Check (Start to cut out)

A 
Chock Wheels
Release Parking Brake
Put on Seatbelt
Start Motor
CUT IN:
Fill tanks
Bleed down tanks slowly, holding for few secs
Verbalize cut in (85-100)
Minimum cut-in is 85
CUT-OUT
Verbalize Pressure (110-120)
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2
Q

Brake Check (Low-Air to End)

A

LOW-AIR ALARM
Bleed air with brake pedal
Verbalize alarm(55-75)
Verbalized psi for alarm & spring brake (20-40 psi)
Fill air tanks
Turn off motor
Release parking brake
STATIC LEAK TEST
acceptable loss < 2 psi in 1 minute
APPLIED test
Applies service brake for 1 minute
Acceptable loss < 3 psi
PARKING BRAKE TEST: accelerate against parking brake
SERVICE BRAJE TEST: Roll 5MPH & apply service brake

***performed beginning every shift

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3
Q

In Cab Inspection (Top to Bottom)

A

Sun visor-tight, no damage
Windshield-no cracks in driver’s field of vision, clean
Windshield wipers-working, no damage
Steering wheel-<2” of play either direction (10 degrees)
Horn-working
Blinkers-working
4-way hazards (working)
Dash switches and gauges-working, in gauge operating ranges
Defroster and super controls-working properly
Brake pedal-not stuck
Accelerator-not stuck
Retarder pedal-not stuck
Seat-proper adjustment
Seatbelt-fastened, free of frays, working (locking)
Gear shifter-operating

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4
Q

In-Cab Inspection (left to right)

A

Driver side mirror-proper adjustment, clean, tight, no damage
Driver side window- clean, no damage
Driver side door handle- working properly
Driver side window crank- working properly
Passenger side window crank - working properly
Passenger side door handle - working properly
Passenger side window-clean, no damage
Passenger side mirror-properly adjusted, clean, no damage

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5
Q

Engine Compartment

A

Belts:cracks, frays, wear, < 3/4” deflection from center
Fluids: oil, transmission, power steering, coolant, windshield
Hoses/leaks: Fuel, oil, coolant, power steering , transmission
Batteries: corrosion, bulging, tight connection
Parts ID:
Alternator, AC compressor, water pump, air
Compressor, turbo, air intake, intercooler, power
Steering pump, steering box, air dryer, radiator

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6
Q

Front (top to bottom, left to right)

A

Apparatus listing or leaning to one side
Looks underneath for hanging wires or leaks
Roof running lights: secure, no damage, correct lens color
Windshield: clean, no cracks in driver’s field of vision
Windshield wipers, no damage, correct pressure against windshield
Bumper hose line/equipment secure
Passenger side blinker and running lights: secure, no damage, correct lens color
Headlights and code 3 lights: secure, no damage
Driver side blinker and running lights: secure, no damage, correct lens color

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7
Q

Driver Side (front to back): running lights, door, mirror, window, steering

A

Running Lights: secure, no damage, correct lens color
Cab doors: secure door handle working
Mirror: Secure, tight, no damage, clean
Windows: clean, no damage, proper operation
Steering: steering box: tight, no damage, no leaks
Pitman arm: tight, no missing nuts/pins
Drag link: tight, no missing nuts/pins
Tie rod: tight, no missing nuts/pins

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8
Q

Drivers side (front to back): front suspension, front tire, front wheel, front brakes

A

Front suspension:
Leaf springs: <1/4 cracked, unless
Main spring
Spring hangers/shackles: tight, no damage
U-bolts: tight, no missing nuts
Shock absorber: leaks, damage
Front tire:
Inflation; max pressure
Condition: unusual wear, sidewalk damage, cracks
Depth: tread depth > 4/32”, no re-tread
Front wheel:
Outside edge: cracks, rust, dings, damage
Lug nuts: present and tight
Axel huh seal: no leaks, oil level
Front brakes:
Hoses: air leaks, cracks
Brake pads >1/4” material left
Crack in drums or rotors, unusual wear
Slack adjusters: <2” grow or 1” I’d pulled manually

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9
Q

Drivers side (front to back): rear suspension, tires, wheels, brakes

A

Rear suspension:
Leaf springs: <1/4 cracked, unless
Main spring
Spring hangers/shackles: tight, no damage
U-bolts: tight, no missing nuts
Shock absorber: leaks, damage
Rear tire:
Inflation; max pressure
Condition: unusual wear, sidewalk damage, cracks
Depth: tread depth > 4/32”, no re-tread
Rear wheel:
Outside edge: cracks, rust, dings, damage
Lug nuts: present and tight
Axel hub seal: no leaks, oil level
Rear brakes:
Hoses: air leaks, cracks
Brake pads >1/4” material left
Crack in drums or rotors, unusual wear
Slack adjusters: <2” grow or 1” If pulled manually

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10
Q

Rear (top to bottom, left to right)

A

Apparatus listing or leaning to one side
Look underneath for hanging wires or debris
Running lights:secure, no damage, correct lens color
Brake/tail lights: secure, no damage, correct lens color
Blinker/4 way: secure, no damage, correct lens color
License plate: present with light
Door/equipment secure

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11
Q

Passenger side (back to front):lights, doors, suspension, tires

A

All running lights and code lights: secure, no damage, correct lens color
All compartment doors secure
REAR SUSPENSION: leaf springs: < 1/4 cracked, unless main spring
Spring hangers/shackles: tight. No damage
U-bolts: tight, no missing nuts
Shock absorbers: leaks, damage
REAR TIRE:
Inflation:max pressure
Check between duals
Proper inflation so tired not touching each other
Overall condition, unusual wear, sidewalk damage, cracks
Depth: tread >2/32” depth on all rear tires, no re-treads

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12
Q

Passenger side (back to front): wheels, brakes, exhaust, drive shaft, frame, windows, mirrors

A

REAR WHEELS:
Outside edge: cracks, rust, finds, damage
Lug nuts: present, tight
Axle hub seal: no leaks, oil level

REAR BRAKES:
Hoses: air leaks, cracks
Brake pads > 1/4” material left
Cracks in drum rotors, unusual wear
Slack adjusters: <2” of throw or 1” in pulled manually

EXHAUST: secure, no leaks (excessive soot)
DRIVE SHAFT/U-JOINT: secure, no missing nuts or bolts
FRAME:!no cracks or illegal welds
WINDOWS: clean, no damage, proper operation
MIRRORS: secure, clean, tight

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13
Q

Passenger side (back to front): front suspension, tires, wheels, brakes

A

FRONT SUSPENSION:
Leaf Springs <1/4 of the broken, unless main spring
Springs/hangers: tight, no damage
U-bolts: tight, no damage
FRONT TIRE:
Inflation:max pressure
Check between duals
Proper inflation so tired not touching each other
Overall condition, unusual wear, sidewalk damage, cracks
Depth: tread >2/32” depth on all rear tires, no re-treads
FRONT WHEEL: cracks, rust, dings, damage
Lug nuts: present, tight
Axle hub seal: no leaks, oil level
FRONT BRAKES:
Hoses: air leaks, cracks
Brake pads/shoes: >1/4” of material left
Cracks in drums/rotors, unusual wear
Slack adjusters: <2” of throw, or 1” is pulled manually

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14
Q

LIGHT CHECK (Operation only):

A 
Headlights/high beams
Blinkers
4-ways (hazards)
Tail lights
Brake lights
Reverse lights
Check all running lights
Code 3 lights
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15
Q

BR132 Special Info

A

Fire curtains all 4 sides and windshield.

Air and fuels lines wrapped for fire resistance

Air intake screen with stainless wire cloth

90’ of 7/16” steel cable for winch. 16,500 pound rating

High idle sets RPM to 1000

Foam transfer system allowing operator to fill from ground

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16
Q

Define cavitation

A

Greater discharge is required than intake is supplying. Intake pressure drops below vapor pressure of water causing rapid expansion and boiling of water. Water bubbles form and enter the pump where they meet high pressures within pump. Bubbles collapse and cause mini-implosions. Energy from implosions begin to remove small parts of metal within pump (pitting) causing decreased pump performance and damage.

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17
Q

VHF mobile info

A 
Ken wood TK-790
255 channels over 20 groups
1 command group
45 watts output
16 repeater tones
Modifiable Adan with 2 levels of priority
1 forever access channel button (home)
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18
Q

How foam pump works

A
  • Flow meter measure water flow and sends info to control module.
  • Flow meter is compared to foam pump output to maintain desired percentage regardless of pump intake or discharge pressures. As GPM increases or decreases, the foam pump automatically adjusts its output to maintain desired foam percentage
  • Accurately discharges foam solution from 0.1% to 0.10%
  • Foam is injected directly into stream on DISCHARGE side.
  • check valve is installed to prevent foam solution entering the pump
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19
Q

Type of foam we have and it’s properties

A

Phos-Chek WD881

  • reflects heat, insulates fuel, increases heat absorption, clings to vertical surfaces, penetrates deep into class A fuels
  • consists of hydrocarbon surfactant molecules reducing surface tension of the water allowed better absorption of water into fuels.
  • Has affinity for carbon allowing better absorption and wetting of fuels. Grabs onto smoke to improve visibility
  • standard combination nozzle and low-expansion foam nozzle (used to pre-treat structures for Wildland firefighting.
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20
Q

Type 3 discharges with foam

A 
Transverse preconnect
Front jump line
Rear preconnect
Right and left upper discharges (1.5”)
3/4” hose reel
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21
Q

Placing into 4WD

A
  1. Stop
  2. Transmission Neutral
  3. Set Brake
  4. Engage front axle
  5. Transfer case to neutral
  6. Switch to low range

*No faster than 5 MPH

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22
Q

Off-road fundamentals (1-10)

A

-use chock blocks AND natural barriers, across slope when parking
-Don’t wrap things around steering wheel
Use low gears and travel slowly
Use spotter ahead in unfamiliar area
Avoid soft ground, if you have to travel through smoothly and quickly
-don’t operate 4WD on dry hard surfaces
Maintain mild brake friction when driving through water
-test brakes after crossing water
Smooth acceleration and braking to avoid losing traction
Drive inside towards hillside when near steep drop off

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23
Q

Off-road fundamentals (11-20)

A
  • Remove large rocks from roadway
  • Don’t assume you can go where other vehicles went
  • don’t drive to areas you cannot escape from
  • Before returning to road, check underneath for damage and duals for rocks
  • avoid driving back over own tracks in brush
  • secure cab equipment
  • drive with headlights on
  • Consider escape routes
  • don’t follow other units too closely
  • Avoid rear end bouncing
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24
Q

Off-road driving (21-23)

A
  • when driving off-road stop rig before downshifting (<5MPH)
  • watch transmission temp
  • exhaust brake off when off-road
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25
Q

What to do before and after off-roading

A

BEFORE:

  • secure cab equipment
  • turn on headlights
  • Turn off engine brake
  • engage 4WD
  • consider LCES

AFTER:

  • Check underneath and between duals
  • Disengage 4WD
  • turn on engine brake
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26
Q

Each PSI is vacuum equates to how many feet?

A
  1. 3 feet per 1 psi of vacuum
    * 2.3 x 14.7 = 33.9 or “max theoretical lift” at sea level
    - can’t get this cause of friction loss in intake hose, strainer, energy needed to move water, and not a perfect vacuum
    - lose 0.5 inch psi in atmospheric pressure every 1.000 feet elevation (example: 12.2 psi at 5000’ elevation)
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27
Q

3 effects during drafting as lift requirement to reach the pump increases

A
  • elevation pressure increases
  • less friction loss can be overcome
  • capacity of pump decreases
28
Q

Capacity of pump is rated for draft at ___ feet

A

10

Less increase pump capacity and more decreases capacity

29
Q

Theoretical max lift

True maximum lift

Maximum effective lift

A

33.9’

25’ : all available atmospheric pressure used to get 25’ but not useful lump capacity for pumping operations

20’: maximum for effective fire stream (60% pump capacity)

30
Q

Determine maximum lift equation

A

Inches of mercury x 1.13

Example: 14 Hg

14Hg x 1.13 =!15.82 or about 16’

31
Q

Net pump pressure for drafting

A

Lift in feet + Intake hose FL
_____________________________
2.3

32
Q

Determining volume of square pools

A

7.5 x L x W x depth

33
Q

Equation for relay pumping (determine amount of pumpers)

A

Total Friction Loss + or - Head Pressure
——————————————————
Max Pump Pressure (250) - Min Intake Pressure (20)

TFL + or - Head Pressure
————————————
230

34
Q

Out of service criteria

A

Wheels/tires/lug nuts/brakes

Steering system/suspension/Springs/shocks/hosed

Controls

Any part of brake test

35
Q

Parts of air brake system (per DMV HANDBOOK)

A

Air compressor
Air compressor governor (determines cut-in and cut-out)
Check valves: prevent air tanks from leaking
Safety valve: in first tank protecting system in event of overpressurization
Air storage tanks
Air dryer/evaporator
Air tank drains

36
Q

4 ways a skid happens

A

Over-braking: braking too hard and Locking up the wheels

Over-steering: turning the wheels more sharply than vehicle can turn

Over-acceleration: supplying too much power to drive wheels causing them to spin

Driving too fast for road conditions

37
Q

How Regen works

A

Products of combustion leave exhaust manifold including particulate matter and NOx. Particulate mater is trapped in the DPF while NOx continues down the exhaust and meets DEF. DEF hydrolysis into ammonia has continuing to mix with exhaust. The ammonia and NOx enter the selective Catalyst Reduction device (SCR) and under heated conditions reacts to produce nitrogen and H2O which is released isn’t the atmosphere.

38
Q

Parked Regen

A

Parked: DPF light will illuminate solid, will flash if not regened within 8-10 running hours, check engine will illuminate if ignored further, finally will have blinking DPF, solid check engine and solid stop engine light.

  • cycle parking brake on/off, cycle transmission to drive then neutral, hold Regen switch for 5 seconds
  • DPF light illuminates for 1 second then stays off. RPM increases to 1100. HEST light illuminated when gets to temp
  • takes 20-40 minutes
39
Q

DEF lights and derating

A

1/4-full (4.5 gallon tank): no light

1/8-1/4: Low solid DEF light

< 1/8: DEF Low light will flash

  • with <1/4 tank, flashing DEF, and check engine light lose 25% torque and govern at 55 MPH
  • DEF Tank Empty: DEF light flashing, check engine light, malfunction lamp (MIL) on
  • Empty tank ignored stop engine light and 5 MPH speed limit
40
Q

2013 Pierce spiel

A

2013 Arrow XT Pierce weighing 44,000 pounds, is 9’8” tall, 10’ wide, and 29’ 3” long. It is powered by an inline 6 cylinder Mercedes DD13 motor producing
500 horsepower at 2080 RPM and
1650 ft torque at 1200 RPM with compression ratio of 17:1. There is a required Regen system installed for emission compliance.
Top speed 68 MPH
Power is transferred to an Allison 4000PR 6 speed transmission equipped with a trans retarder
The midship Pump is a HALE QMAX 150 that is rated to 1509 GPM at 150 PSI from draft and has a 500 gallon tank.
There are 4 intakes and 12 discharges with 8 being foam capable.
The foam pump is controlled from a FoamPro 2001 automatic proportioning, Direct Injection pump from a 25 gallon class A foam tank.
The engine is stopped with the assistance of a brake retarder and 4 disc brakes with automatic adjusting slack adjusters. There is also front end independent suspension utilizing control arms and torsion bars.
SAFETY systems: interlock with raising the cab, seatbelt monitoring system, rear and right camera display, Video Data Recorder which records last 100 hours.

41
Q

2 requirements for tilting pierce cab

A

Battery switch

Emergency brake engaged (interlock system)

42
Q

Pump Boss in pressure versus RPM mode

A

Pressure mode: keeps constant discharge pressure by varying RPM of motor

RPM mode: maintains constant RPM while still monitoring pump discharge pressure. Discharge pressure is limited to an increase of 30 psi.

43
Q

BR133 spiel

A

2013 KME Workstar
35,000 pounds
9’11” high, 26’4” long, 10’ wide
330 HP 9.3 liter International Max Force 9 motor with 950 lb-ft of torque. 17:1 compression ratio
70 gallons of diesel, 27 quarts of oil
Transmission Allison 3000 EVS 5 speed
HALE single stage pump 750GPM at 150psi with PumpBoss Pressure governor from 500 gallon water tank
20 gallon foam tank using the FoamPro 2001 Automatic proportioning, direct injection foam pump capable of pumping from 0.1%-10%
Has auxiliary Waterous E501A Pump for pump and roll operations rated for 110GPM at 100 psi.
HALE oilless, rotary vane positive displacement priming pump for both pumps
Solid front and rear axle suspension with 4WD capabilities. Can engage 4 high < 5 mph and 4low capable.
Tires at 120 psi all around
Winch has 90’ of 7/16” steel cable rated to 16,500# with controls in rear of vehicle.

44
Q

BR132 Spiel

A

2008 Placer with International Navistar 7400 SFA 4x4 body
35,000 pounds
8’4” wide, 9’9” high, 25’6” long
335 HP turbocharged International DT570 motor that Yields 950 lb-ft of torque with 17:1 compression ratio and engine brake
Power is transferred to a 5-speed Allison EVS transmission
Holds 70 gallons of diesel
HALE single stage centrifugal Pump rated to 750 GPM at 150psi
Auxiliary Waterous E501A pump for pump and roll operations rated to 110GPM at 100 psi
HALE oilless rotary vane priming Pump for both pumps
500 gallon water tank
20 gallons of foam utilized by an automatic proportioning, direct injection FoamPro 2001 electric foam pump.
Solid front and rear axles with front/rear differentials that can be placed into 4WD through engagement of front axle
Warn 16.5 Ti winch with 16,500# capacity has 90’ of 7/16” steel cable.

45
Q

Horsepower versus torque

A

Horsepower is measurement of work over time. Specifically the time to lift 33,000 pounds one foot in one minute.

Torque is rotational force made by the crankshaft. Diesels have high torque making them better in moving loads under lower RPM

46
Q

OOS items

A

Wheels/tires/lug nuts/brakes

Steering system/suspension/Springs/shocks/hosed

Controls

Any part of brake test

47
Q

How many seconds to look ahead when driving

A

12-15 seconds

48
Q

When to check mirror during lane change

A

Before
After your turn signal is on
Right when you start the change
After completion of lane change

49
Q

3 rules for using turn signals

A

Signal early

Signal continuously: keep both hands on steering wheel canceling only after completing the turn

Cancel your signal

50
Q

Determine how much space in front of you

A

1 second per 10’ of vehicle length at speeds < 40 MPH

Add one second for speeds > 40 MPH

Example: engine 131 is 30’ which means 3 seconds of space < 40 mph and 4 seconds > 40 MPH

51
Q

FL for 1.5” : 30, 60, 95 GPM

A

3
9
23

52
Q

FL for 1.75” hose: 30, 60, 95, 125, 150, 200

A 
2
4
10
18
26
46
53
Q

FL for 2.5”: 95, 125, 150, 190, 200, 210-300

A 
2
3
5
7
8-18 every 10psi from 200-300gpm
54
Q

FL for 4”: 500, 750, 1000, 1250, 1500

A 
5
10
18
28
41
55
Q

Wick 80-4H

A

1.5 horsepower, 4 stroke, single cylinder, air cooled

Pump single stage centrifugal pump 55 GPM at 60 psi

0.68 quarts of fuel

.11 quarts 10w30

Max lift 120’

2.5 GPM required min. to prevent overheating

56
Q

A good operational leader will…

A 
Take charge
Motivate: “can do safely attitude”  
Demonstrate initiative
Communicate: through specific directions and asking for feedback
Supervise at scene of action
57
Q

Leader’s intent

A

Provide firefighters with clear understanding of their intent for the assignment:

Task: what is to be done

Purpose: why it is to be done

End state: how it should look when it is done

58
Q

PumpBoss PBA200

A

Two modes: pressure and RPM

300 PSI sensor on pump discharge

RPM mode limits increase of 30 PSI in pressure

Preset: RPM mode is 1000; PSI mode is 115 psi

Max RPM 2100

59
Q

PumpBoss readings

A

Oil Pressure: 10-100 psi

Temperature: Engine Coolant 130-240

Transmission Temp: 140-300

Battery Voltage: 11.5 - 15.5

60
Q

PumpBoss LOWATer and NO WATeR

A

No water less than 15 PSI discharge ENGINE WILL IDLE. Must be corrected within 3 minutes

Low Water if Discharge less than 45 psi but more than 15 sets RPM to 1100. After 7 seconds will idle.

61
Q

PumpBoss 221 code

A

Sets maximum RPM at 1500 when discharge pressure is less than 100

62
Q

CVC21055

A

Drive with due regard for safety

“Immediate response to a call for emergency assistance utilizing warning lights and sirens”

-would a reasonable person carry the same actions in a similar situation?

63
Q

OPTICOM

A

Emitter, detector, phase selector

64
Q

Vehicle Accident Report Kit

A

Reportable incident: any accident involving damage to city vehicle cause by vandalism, theft, or acts of nature

Reportable accident: any accident incoming city or personal vehicle while performing city duties that results in death, bodily injury, or property damage.

***notify PD and fill out form for all reportable accidents

65
Q

3 reasons to fill our accident kit 4 steps to take after the accident

A

3 reasons:
Reportable incident, reportable accident, collision in person vehicle while conducting city business

4 steps:

Stop safely: render aid, leave vehicles at point of rest, notify supervisor

Notify PD for injured persons

Locate witnesses: get all their info

Identify yourself and give your info, do not discuss collision or admit guilt

Engineers exam (2 decks)

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