Drivers Training Flashcards by Eric Eaton

Five primary vehicle systems that impact ability to safety control the apparatus

Tires
Wheels
Steering
Suspension
Brakes

How well did you know this?

Not at all

Perfectly

Steering system

Steering wheel
Steering shaft
Steering box
Steering output shaft
Pitman arm
Drag link
Steering arm

How well did you know this?

Not at all

Perfectly

No more than how much play in drag link

Less than 1/8 inch play vertically and horizontally

How well did you know this?

Not at all

Perfectly

Gvwr vs curb

Gvwr- curb plus equipment, cargo, passengers
Curb- components without cargo or passengers

How well did you know this?

Not at all

Perfectly

Gap between S buffer and spring and oos

1/16-1/2 inch.
Less that 1/16 inch or rubber axle stop touching = defect
Greater than 1/12 inch OOS

How well did you know this?

Not at all

Perfectly

Pierce disc brake rear axle replacement

1/8th inch (3 mm)

How well did you know this?

Not at all

Perfectly

OOS brake rotor

Cracked rotor
Heat checks greater than 1/8inch deep
Extend greater than 3/4 inch accross face of rotor

How well did you know this?

Not at all

Perfectly

Oos drums

Breaks through drum
Crack expand when brake applied
Heat checks greater than 1/2 width
Heat checks greater than 1/8th inch deep

How well did you know this?

Not at all

Perfectly

Air brake test

Release Peking brake let settle 1 min
More 3 psi loss or 4 for tillers
Apply steady pressure to brakes 1 min
No more 3,4 psi loss
Press release brakes- low air alarm 60-90 psi parking break pop at 20
Start motor at 1200 rpm’s
Pressure increase 50-90 psi in less than 3 mins
Pressure not exceed 135 psi
Place vehicle in D or R, P brake must restrain from movement
Engage parking brake and return to N

How well did you know this?

Not at all

Perfectly

COLA

C cut in by 95. Below 80 oos
O cut out. 120-135. Above 135 is oos
L low air and audible alarm 60-90. If alarms don’t engage by 60= OOS
A air leakage. 3 psi engines 4 psi tillers

How well did you know this?

Not at all

Perfectly

Drums at what temp are subject to brake fade?

800-1000 degrees

How well did you know this?

Not at all

Perfectly

Axillary brakes

Jacobs brake
Telma driveline retarder
Allison transmission retarder

How well did you know this?

Not at all

Perfectly

Jake brake

Integrated into motor cylinders, uses motor to absorb energy
Engages when accelerator release
Disengages when accelerator depressed or RPM below 1000

How well did you know this?

Not at all

Perfectly

Telma 4 stages

Stage 1 and 2- release accelerator
Stage 3- depress brake lightly
Stage 4- depress brake hard

How well did you know this?

Not at all

Perfectly

Transmission retarder

Vaned flywheel in transmission
Oil directed into flywheel to slow transmission

How well did you know this?

Not at all

Perfectly

2 operator interventions with DEF

Active regen
Filling def tank

How well did you know this?

Not at all

Perfectly

Def regen light solid vs flashing vs flashing with check engine

Passive is needed vs more urgent need vs immediate active regen required

How well did you know this?

Not at all

Perfectly

Def regen light with thermometer indicates

High exhaust temp. No need for service. Regen created high exhaust temp

How well did you know this?

Not at all

Perfectly

Speed for passive regen

40 mph

How well did you know this?

Not at all

Perfectly

Manual (active, parked) regen

Remain in service. Hit manual regen switch. Revs up to1100 rpm. Remain with vehicle. 5-20 mins.

Cancels if break pedal depressed. “Regen inhibit” button pressed

Clearance of 5 ft from exhaust required

How well did you know this?

Not at all

Perfectly

Freezing point of def

12 degrees

How well did you know this?

Not at all

Perfectly

Never engage differential lock when

Greater than 25 mph or wheels spinning

How well did you know this?

Not at all

Perfectly

What is required to complete defect report?

Mileage
Engine hours
Pump hours
Generator hours

How well did you know this?

Not at all

Perfectly

How much of tires surface is in contact with road at any time?

10%

How well did you know this?

Not at all

Perfectly

Which brakes lock first?

Front before rear to prevent spin out

Once vehicle swings more than ___ degrees, steering correction will not be effective

25 degrees

Entering intersection occurs when front bumper crosses

Into cross-traffic

Human eye takes __ seconds to recover from being blinded by bright light

7 seconds

Cone spacing Less than 45 mph Greater than 45

Greater than 45 20 ft Less than 45 40 ft

Weight distribution front rear axle

1/3 front 2/3 rear

Minimum recommended tread depth emergency vehicles

4/32 inches

Check slack adjusters for movement no more than ___

1 inch

Due regard

Reasonably careful

Gross negligence

Reckless disregard

Willful and wanton

Intentional with careless indifference

Spotter should be how far from tailboard?

10-20 ft

What is intersection?

Anywhere that other vehicle may cross your path

Uncontrolled intersection

Does not have control device (stop sign, yield sign, traffic signal, railroad gate)

Change siren cadence no less than ___ ft from intersection

200

Safe following distance accounts for

Perception time, reaction time, brake time

4 second rule

Follow 4 seconds at 40 mph plus 1 second per 10 mph over. Add 1 second more per 10 mph in ADVERSE WEATHER

What hand position on steering wheel allows maximal directional control?

9 and 3

4 skids

Braking, power, cornering, hydroplane

Oxygen limit

19.5-23.5

How much o2 must be present for accurate LEL readings?

At least 10%

H2s alarm

10 ppm

Combustible gas and O2 sensors display in terms of ____. Toxi sensors display in terms of ___

Combustible-percent Toxic-Ppm

Co sensors have cross sensitivity to what?

H and ENE’s (acetylene, ethylene)

Lel ___ work with extreme caution

10-25%

LEL greater than ___ withdraw immediately

25%

CO is IDLH at and LEL IS

1200 ppm 125,000 ppm

H2s scba, idlh

5 ppm, 100 ppm

Normal gamma radiation

5-25

Class 123 leaks

1 wet 2 form drop not fall 3 drops fall

75 80 80 rule

75 degree angle 80 percent elevation 80 psi nozzle

Operations requiring more than ___ gpm often require elevated master streams

700 gpm

Epu (emergency pump unit) limitations

Don’t run for more than 30 mins without allowing 30 mins cooling

Angle between ladder pipe and control handle

130 degrees

Secure hose with

3 rope hose straps One at tip (3-4 ft behind coupling) One in center One at turntable

Maintain clearance __ ft from power lines

Scrub area for towers vs aeriel ladders

Towers-ground floor up Aeriel ladders- 2-3 floor up

If fire is on upper floors of 5 story building aeriel aparatus should position ___ of fire apparatus

Outside

If building is greater than 5 stories aerial should be placed

Inside engine

Aerials are rated for winds up to

35 mph

Ice accumulation greater than ___ should be a concern

1/4 inch

Park aparatus ___ ft from right of way

25 ft

Counterweight in elevator is

Cars dead weight plus 40% designed live load

Air brake systems that can be used for pneumatic tools operate at ___ psi

120 psi

On tractor trailer ___ color is normal breaking and ___ is emergency airline

Blue normal Red emergency

Hose lengths between ___ and ___ ft

16 and 200 (aparatus hose reel) ft

Minimum fire service air hose diameter

3/8 inch

Most air tools air pressure if

90 psi

Airbag working pressures

7-145 psi

Bar in psi

1 bar=100 kpa=14.5 psi

Low and medium pressure air bags use ___ air volume and ___ diameter

High, large

Airbag capacity

Capacity= operating pressure X surface area

High pressure airbags rated at ___ inch lift

1 inch lift

Once bag reached max height, it’s rated capacity is reduced by ___ percent

50 percent

Max inflation height is equal to

Half length of shortest side

Medium and low pressure airbags provide rated capacity during ____ of lift. And reach max stability at___

Entire lift Max Height of lift

Two ways to use cribbing with airbags

Supporting the load, supporting the air bags

Top of box crib needs to be ___

Solid layer

When on soft ground bottom layer of cribbing should be ___

Solid

Minimum __ x __box crib layout must be used with airbags

3x3

Airbags should be hysdrostatically tested every ___ years

Airbags have an approximate working life of ___ years

10 years

T or false. All fluids are compressible to some extent

True

There are two categories of fluids

Compressible- density significantly changes with pressure Incompressible-density does not significantly change with pressure

____ are often considered incompressible fluids?

Liquids

Pascals law

Any change in pressure to a combined fluid will result in an equal change in pressure throughout the fluid and walls to the container

Pressure = ____/_____ Force = ____ x ____

Pressure= force / area Force = pressure x area

A floor jack is a class ___ lever

___ pressure rescue tools provide more precision

Low pressure ( operate slower)

Low pressure rescue tools ___ psi High pressure ___ psi

Low 5000 High 10000

Stage 1 rescue tool is ___ pressure/ ___ flow Stage 2 is ___ pressure/ ___ flow

Stage 1 low pressure/ high flow Stage 2 high pressure/ low flow

Wood cribbing can crush ___% of its height before failing

Minimum __ growth rings per inch of cribbing

Tight knot no more than ___ in. In diameter

1.5

Loose knot no more that ___ in. In diameter for wood

3/4 in

Douglas fir vs oak

For gives warning, oak catastrophic failure. Oak 1.5 times stronger than Douglas fir

Loading Douglas fir or southern pine perpendicular vs parallel to the grain bearing in PSI

Perp- 500 psi Parallel- 650 psi

Max height to width ratio of a box crib

3:1

4x4 will support 6x6 will support

4x4 6000 6x6 15000

Unstable parallellagram or triangular cribs have height to width ratio of

1:1

Define footprint

Area of cribbing outside points of contact (width is just points of contact and footprint is not included in calculation)

4 points of contact height to width ratio 2 points of contact 1 point of contact

4- 3:1 2- 1.5:1 1- 1:1

No more than __ peices of cribbing stacked in the same direction

Vertical post shoring Size (4x4 or 6x6) Length (up to) Strength lbs

4x4- 8000 lbs up to 8 ft long 6x6- 20,000 lbs up to 12 ft long

Point of taker shore

Stabilize horizontal movement

2 stroke saw vs 4 stroke saw

2 stroke- compression and combustion stroke (inefficient) 4 stroke- compression, combustion and exhaust strokes

Chain saw chain pitch vs gauge

Pitch- distance between 3 consecutive rivets, decided by 2, defines size Gauge-drive links thickness

Define slag

Molten iron oxide

Acetylene uel

100%

Acetylene, propane, methyl acetylene-propadiene MAPP

Acetylene- highest flame temp Propane- greater total heat combustion MAPP- least combustible but can be used at higher pressures

Acetylene flammable range

2.5-81 %

Petrogen torch gas tank psi remain above ___ psi. When it reaches that psi, re-charge the tank to ___ psi

10 psi, 20 psi

Plasma arc cut master 82 __V and ___psi

220 V 100 psi

Capacitors can hold a back up power supply for up to ___ mins

30 mins

When disabling a battery, cut the ___ and then the ___

Negative then positive

Three types of seatbelt pretentioners

Mechanical Electric Pyrotechnic

Engage automatic tire chains when

Vehicle is moving

If snowchains are installed in an allsteer which function must be disabled?

The allsteer function

What is max driving speed for ALL chains?

25 mph

Three conditions that must be met for auto primer to engage

Ok to pump light illuminated Auto prime is activated Pump discharge pressure drops below 20 psi

Class b afff-atc percentages for hydrocarbon and polar solvent

Hydrocarbon -1% Polar solvent- 3%

Pierce how height length weight

9’6” tall 30’1” long 40240 lbs

Genesis tools operating pressure

10,000 psi

Drivers Training Flashcards

(127 cards)