CHAPTER 2 Flashcards
NEWER APPARATUS MAY BE EQUIPPED WITH ELECTRICAL____ THAT ARE INTENDED TO PREVENT AN ______OF A VEHICLE ELECTRICAL GENERATION SYSTEM
LOAD MANAGEMENT SYSTEM/ OVERLOAD
an inspection where certain system or component of an apparatus is operated to ensure that it is functioning properly
FUNCTIONAL CHECK
What NFPA requires that driver engineer be skilled in the performance of certain maintenance tasks
NFPA 1002
it is never acceptable to mix ____tire with ___-___ tire
radial/bias-ply
old tires with generous ___depth have been the cause of blowout that led to Serious accident and death
tread
the correct tire for any commercial vehicle is determined after the vehicle’s
specifications are final
Load management system sometimes incorporate a_____ and _____ into the same device
load sequencer and load monitor
the maximum tire pressure imprinted on the exterior of each tire is not the recommended . set and maintain the tire pressure at the manufacturers pressure recommendation for the correct ___ ___ , _____ _______ and measured in service axle loads
operating pressure / tire size, type, load range
anti lock braking system reduce the possibility of an apparatus going into
slide , jackknife, are spin during heavy braking.
THE MANUFACTURER DETERMINES THE _____AS THE MAXIMUM AMOUNT WEIGHT AT WHICH A VEHICLE CAN BE SAFELY OPERATED ON ROADWAYS IN IDEAL CONDITIONS
GROSS VEHICLE WEIGHT RATE
Device that watches an electrical system for added Load that may threaten to overload the system
LOAD MONITOR
DRIVER SHOULD UNDERSTAND ALL THE INFORMATION IMPRINTED ON THE ____OF A TRUCK TIRE
SIDEWALL
When a overload condition occurs,the load monitor shut down the less important electrical equipment to prevent the overload
LOAD SHEDDING
the component used to push on the internal clutch fingers connected to the clutch pedal and when activated disengage the clutch from the engine
THROW OUT BEARING
The amount of travel the clutch has before it begins to disengage the engine from the transmission
Free play (free travel)
_____weight is the weight of an empty Fire Apparatus fresh off the assembly line with no tools,water,equipment, or passengers
curb
Insufficient free play will cause clutch
1: SLIP
2: OVERHEAT
3: WEAR OUT
the manufacturer determines the ______maximum weight which a vehicle can be safely operated on roadways in ideal condition
GVWR
Steering wheel play should be
No more than 10° in both directions.
ABS brakes also assist the driver operator in keeping the apparatus in a ____ ________during heavy or emergency braking. ______ __________ does not necessary provide a faster stop, but it greatly enhance a control stop.
STRAIGHT TRAJECTOTY / ABS TECHNOLOGY
20” steering wheel may have?
2” play
device use in an air brake system that connect between the activation pads and the brake pads that compensate for brake pad wear
slack adjuster
the driver / operator should conduct an____( required by many state and provinces before road operation of a commercial vehicle)as defined by the AHJ inspection and maintenance schedule
air brake test
Air-actuated braking system
1: Use compressed air to hold off spring break (parking brake)
2: Applies air pressure to a service brake for vehicle stopping.
3: Used by most modern fire department.
How often should apparatus brakes be thoroughly tested
At least annually
Once the entire exterior of the apparatus has been inspected, the in-cab checks have been completed, and the airbrake testing is complete, the driver should shut off the engine prepare to perform checks and routine preventive maintenance in the ______ _________
ENGINE COMPARTMENT
For inspection of Vehicles equipped with a tilt cab ensure that the control operates _____ without binding and that the hold-open device is latch. in addition, check cab latches for security of mounting, lubrication, and accumulation of metal fillings,n the mechanism.
FREELY
SAE #
Indicates the viscosity of the oil
to select the proper lubricant, consider the_____ of the unit the____ of the lubricant and the ______recommendations
requirements,characteristics,manufacturer’s
Essential characteristics of oil are
1: corrosion protection
2: foaming
3: sludging and carbon build up
the manufacturer’s manual will recommend the____numbers for engine oil
Society of Automotive Engineers
Systematic maintenance procedures should specify:
1: maintenance procedures
2: when they are performed
3: Who is responsible for conducting the maintenance.
operate the pump Handle on the lubrication gun until___is felt
resistant
Driver should perform______/_____ to ensure that all work has been properly completed in accordance with the manufacturer’s guidelines AHJ
POST-MAINTENANCE/REPAIR INSPECTION
most Automotive batteries contain
sulfuric acid and Lead
Standards for testing D/E are found in?
NFPA 1002
NFPA 1901 braking test requires that new apparatus brought to a complete stop from the speed of 20 mph in the distance not to exceed?
35 feet
On a apparatus with air brakes.NFPA require the air pressure to build up sufficient air level within
60 seconds of starting
Apparatus with air brakes are to be equipped with an air protection valve.That prevents the air horn from operating when the pressure in the reservoir drops below
80psi
Except when in a contaminated area. When should you shut down the engine after a full load operation?
Wait 3 to 5 minutes 20 I’ll temperature to stabilize.
The NFPA brake standard requires that parking brake hold the apparatus?
In place on a grade of up to 20%
Stopping distance should not exceed 20’
When the brakes are applied @ 5 mph
Air brakes respond slower than Hydraulic brakes
True
What are two proactive measures that can ensure that a piece of fire apparatus is maintained in the highest state of readiness
1• Preventive maintenance program
2• Routine maintenance checks
The goal of preventive maintenance is to
Eliminate unexpected and catastrophic failures that may endanger fire fighters and the general public
Which NFPA outlines methods for brake tests
NFPA 1911
What are the two types of inspection conducted during a walk around inspection
1• operational readiness inspection(required
by NFPA standards and AHJ)
2• Vehicle pretrip road worthiness inspection
Many serious fire apparatus collisions have been caused by
Faulty brakes
Who may dictates how and brakes are tested
1• Federal
2• State
3• provincial laws
Most large,modern,fire department Pumping apparatus are equipped with
Air-actuated braking system (air brakes)
the cab should be lifted ______on a basic for thorough inspection of the engine compartment
weekly
if an overload condition occurs,the ____ will shut down less important _____equipment in order to prevent the overload
LOAD MONITOR / ELECTRICAL
Per NFPA 1911 check for bulges greater than ___
3/8 of an inch
Step on the brake pedal firmly when the apparatus is moving at about ____The Apparatus should come to a complete stop within about ___
5 mph,20 feet
The maximum amount of weight that axle system can safely carry
Gross Axle Weight Rating
Tire selections for fire apparatus are based on ____ for the Apparatus
gross axle weight rating
effective lubrication depends on use of the
proper grade lubricant, the frequency of the lubrication , the amount used, and the method of lubrication
Trails of fluid on the wheel or tire indicated
Axle gear oil leaks
With engine off and master switch on, pump brake pedal continually lowers air tank pressure. Warning light and buzzer should activate before
60 psi
Air pressure should build to 85-100 psi
In 45 seconds at full Engine RPM
Apply the brake pedal, lowering the pressure in the tanks by
5 to 10 psi increments stopping at 85 psi
After one minute, air pressure should not drop than
3 psi straight chassis or 4 psi for tractor drawn aerial
Continue to pump brake pedal until air brake control sets automatically by the button popping out
Between 20 and 40 psi
Some vehicles coolant reservoir have two marks : one for when the engine is hot, the other
When it is cool
If the apparatus has unsealed batteries, carefully remove the caps and check the
Electrolyte (water) level.. add distilled water or water recommended to cell if low
Clean away any corrosion around terminals with a mixture of
Baking soda and water
If batteries are washed, dried batteries to prevent
Parasitic current
Clean road debris,dirt, dust, moisture from the top of the batteries to prevent any___from terminal to terminal that can result in electronics issues
Bleed of current
