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Preventative Maintenance Post-Test Review Flashcards | StudBud
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Preventative Maintenance Post-Test Review
Preventative Maintenance Post-Test Review
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Medium/heavy truck and equipment preventative maintenance
Flashcards
50 cards
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Practice quiz
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Questions
50
Answers
1
Each end of the I-beam has a device that connects the front wheels to the suspension called a
steering arm
steering knuckle
steering axle
tie-rod
2
Some movement of the brake ___________ should be present on all disc brakes.
shoe
rotor
caliper
air pressure
3
Broken and loose alternator mounting may indicate damage from which of the following?
Engine torsional vibration
Improperly adjusted voltage regulator
No current feed to internal regulator
Resistive voltage sensing lead contact at alternator
4
Tech A- no free play on a pull-type clutch can cause wear. Tech B- hydraulic clutches operate without release clearance.
Both Tech A and Tech B
Neither Tech A or B
Tech B
Tech A
5
Regular PM ensures maximum ___________ when trading a vehicle for a replacement.
reliability
productivity
efficiency
return on investment
6
Chassis lubricants are greases classified in terms of their ___________.
penetrating ability
capacity
specifications
antifreeze strength
7
Tech A- PMI process begins with a walk-around inspection. Tech B- you should perform the walk-around inspection alone.
Tech A
Neither Tech A or B
Tech B
Both Tech A and Tech B
8
Tech A- truck air brake systems usually have primary and secondary tanks. Tech B- air brake systems use air dryers.
Both Tech A and Tech B
Tech A
Neither Tech A or B
Tech B
9
Tech A- the PMI process begins with a walk-around inspection. Tech B- you should perform the walk-around alone.
Tech B
Both Tech A and B
Tech A
Neither Tech A or B
10
A(n) ______ belt is a type of multi-rib belt that is long enough to drive multiple accessories.
idler
V-type
alternator drive
serpentine
11
A ____________
should include an itemized task list of procedures.
PM service checklist
Vehicle Inspection Report (VIR)
Commercial Vehicle Operator Registration (CVOR) record
PM schedule
12
Engine-on inspection, start the vehicle and let it idle for a few minutes to check for _______.
drive line phasing
leaks
system voltage
excessive play
13
Tech A-steering knuckle enables the turning of the wheel end. Tech B-steering knuckle connected to I-beam by master pin.
Both Tech A and Tech B
Tech B
Tech A
Neither Tech A or B
14
All wheel nuts must be tightened to the correct torque and in the proper
alignment
clamping force
direction
sequence
15
Tech A says the treadle valve is used for the rear brakes. Tech B says the treadle valve is used for the front brakes.
Tech A
Tech B
Neither Tech A or B
Both Tech A and Tech B
16
Low beams and high beams may operate together when the high beams are_____________.
not illuminated
illuminated
connected
integrated
17
Tech A-you should check all exterior lights, lenses, covers. Tech B- you should check any visible wiring for condition.
Neither Tech A or B
Both Tech A and Tech B
Tech A
Tech B
18
A lockout/tagout is an umbrella term that describes a set of safety _______________.
devices
tools
practices and procedures
equipment
19
The process air dryers use to trap oil and water from the compressor in a replaceable cartridge
consumption
combustion
pressure-protection
absorption
20
Type of tire that air is sealed inside using an inner tube separate from the tire casing.
drop-center rim
tubeless
tube-type
one-piece rim
21
If a clutch does not release completely, the cause may be _________________.
warped clutch disc or pressure plate
clutch adjustment incorrect on pull-type clutch
oil-soaked discs
riding the pedal
22
Tech A says use a safety cage to inflate a tire. Tech B says dismount a tire before inflating.
Tech B
Both Tech A and Tech B
Neither Tech A or Tech B
Tech A
23
Pulling of a vehicle to the left or the right while the driving may be caused by what?
Air loss
Lateral run-out
Radial run-out
Tire with broken or misaligned belts
24
Any vehicle operating on public roads and highways requires a _________ system.
turn signal-brake light
standard headlight
multiplexing light
collision avoidance
25
Bazooka tubes are used to_________________________.
check and adjust the wheel alignment
align a trailer from the fifth wheel pin to the rear axles
check tire wear to determine tire replacement need
ensure that items like lug nuts are secured correctly
26
The most common cause of wheel seal leaks is loose wheel________.
bolts
clamps
bearings
nuts
27
Tech A-wheel alignment refers to vehicle tires. Tech B-rolling resistance & wheel alignment is not an issue of fuel use.
Tech B
Both Tech A and Tech B
Tech A
Neither Tech A or B
28
Generally, lamps facing frontward must emit what color light?
Blue
Red
White or yellow
Amber
29
If a fifth wheel lock is closed, what would you check?
Check position of fifth wheel.
Check kingpin.
Check lock mechanism per manufacturer instructions.
Check operation of the air release cylinder.
30
Braking odors are typically related to overheated____________.
brake shoes
bushings
brake linings
brake drums
31
Brake fluid that is hygroscopic means it______________.
transfers force while under pressure
absorbs water from the atmosphere
produces a fractional distillate of crude oil
produces heat
32
The distance between the centerline of front and rear axle or tandem suspension is called the _______________.
bumper
frame
wheelbase
landing gear clearance
33
Complaint for air systems is that have a slow pressure build-up, the cause could be what?
air gauge
safety valve
governor
compressor
34
Oils are graded or classified by the American Society of Automotive Engineers (SAE) through the
viscosity rating
penetrating ability
service classification
viscosity index
35
Safety legislation defines a CMV as a vehicle that is used for interstate commerce business and
is designed for transportation of 25 passengers
is involved in transporting non-hazardous materials
transportation of 16 passengers, including a paid driver
weighs in excess of 10,001 pounds
36
If the electrolyte level is lost through evaporation, what should be added?
Sulfate crystals
Acid
Distilled water
Calcium
37
Fifth wheel and upper coupler inspection is recommended every three months, or _______ miles.
50,000
12,000
30,000
20,000
38
Most of today's truck suspension systems use what type of mounting bushings?
rubber
metal
steel pin
bronze
39
A vehicle _________
raises a whole vehicle off the ground to easily work on the underside.
trestle
trolley
hoist
jack
40
What component would this complaint apply? Won't pass air to unloader to “cut-off ” compressor.
Governor
Air gauge
Relay valve
Service brake chamber
41
What could cause the ribs in the middle of the tire wear faster than those on each side?
feathered
cupped
deflated
overinflated
42
If the solenoid clicks or chatters, it might indicate that there is (are) _________________.
an open circuit or high resistance in circuit
a short in starter
loose or corroded battery terminals
a solenoid is engaged but not cranking
43
A life requirement for a heavy duty diesel engine would be how many miles?
700,065 miles
185,000 miles
435,000 miles
110,000 miles
44
Tech A- tires lead all roadside breakdowns. Tech B- tires are 2nd most common source of defects leading to accidents.
Tech B
Both Tech A and Tech B
Neither Tech A or B
Tech A
45
After bleeding the hydraulic clutch, what type of fluid do you fill the master cylinder with?
Anti-freeze
Brake
Transmission
Hydraulic
46
Brake drums need to be discarded if they experience__________________.
slow release
spring brakes not fully releasing
severe heat checking
poor lining-to-drum contact
47
How often should air tanks be drained?
Weekly
Daily
Monthly
Yearly
48
Oils with low viscosity ratings are for what type of conditions?
extensive idling
stop-and-go driving
hot
cold
49
The maximum tire pressure is located on the tire _________.
rim
hub
sidewall
tread
50
An alternator loose belt will slip and cause
overcharging
undercharging
premature failures of diodes
pulsing of DC output current