Exam 4 Flashcards
(93 cards)
1
Q
Any weight or vehicle component supported by the springs is classed as ______ weight.
A
Sprung
2
Q
The two major steering gears used in vehicles today are
A
Steering box
Rack and pinion
3
Q
Some MacPherson strut vehicles have caster adjustment on the _____ control arm.
A
Lower
4
Q
___ rod ends provide orbital movement in the steering linkage.
A
Tie rod
5
Q
Uneven SAI can cause _____ pull.
A
Brake
6
Q
The _____ and ____ arm suspension has been popular for many years. (SLA)
A
Short
Long
7
Q
The camber is zero, SAI and included angle are the ____.
A
Same
8
Q
Unequal camber results in a pull to the side that has the ____ positive setting.
A
Positive
9
Q
The ___ double flare and ___ flare are the only two types of flares allowed for brake fittings.
A
SAE
ISO`
10
Q
Any weight or vehicle component not supported by the springs is called _______ weight.
A
Unsprung
11
Q
Dual-diaphragm boosters are also called ______ boosters.
A
Tandem
12
Q
Front ___ is the last adjustment angle to be adjusted the same way on most vehicles.
A
Toe
13
Q
_______ velocity (CV) joints are located at either end of the axle shafts in FWD vehicles.
A
Constant Velocity (CV)
14
Q
Excessive positive caster can cause three detrimental conditions
1
2
3
A
Road shock
Heavy steering
Shimmy
15
Q
Steering axis inclination (SAI) is a _______ control angle.
A
directional
16
Q
Most braking is done by the ________ shoe.
A
Secondary
17
Q
_____ angle is the angle formed by the thrust line and geometric centre line.
A
Thrust
18
Q
On a shock absorber most control takes place during ______, controlling spring bounce.
A
rebound
19
Q
If the toe change is not equal, the vehicle will ____ steer or pull to one side or the other when going over bumps in the road.
A
Bump
20
Q
The majority of pads in use today are of the ____-metallic type.
A
Semi
21
Q
Air and _____ are common brake fluid contaminants.
A
Water
22
Q
Dual piston units may be split from to rear, is in common ___ and ___ vehicles, or diagonally split, as commonly found on ___ vehicles.
A
RWD
4WD
FWD
23
Q
Uneven caster will pull to the ____ positive side.
A
Least
24
Q
The ______ protect the rack assembly from contamination.
A
Bellows
25
If a vehicle has __________ steering linkage, it will have a pitman arm joining the steering gear to the steering linkage and an idler arm supporting the linkage on the right hand side.
Parallelogram
26
Pressures in the accumulators can be as high as ____ PSI
2500
27
___________ systems are most common to full-sized rear wheel drive passenger vehicles and light trucks. Two primary members, known as the pitman arm and idler arm, support the center link.
Parallelogram
28
When one of the front wheels is behind or further back compared to the other front wheel it is known as ______
Setback
29
______ roller bearings were standard for front wheel bearings on rear wheel drive vehicles for many years.
Tapered roller bearings
30
______ brake boosters increase the hydraulic brake pressure applied on the master cylinder piston.
Power brake boosters
31
Thrust line is determined by the total ___ of the rear wheels.
Toe
32
The majority of RWD engines are _________ mounted.
Longitudinally
33
The endplay of adjustable tapered roller bearings should be maintained between 0.0___mm and 0.___mm.
0. 0254mm
| 0. 127mm
34
Steel lines are sized by ______ diameter.
Outside
35
Brake linings need to be tough. During hard braking, the shoe may be pressed against the drum with a force of ____ LBS. They must be able to withstand heats up to ___ degrees.
1000 LBS
| 500 Degrees
36
______ ball joints act as a stabilizing pivot point for the steering and suspension action. These joints usually don't carry any significant vehicle load.
Guiding
37
There are ___ sylenoid valves per channel: an isolation valve and a pressure reduction or dump valve. The solenoid valves control pressure hold, pressure decrease and pressure increase. These valves are controlled by the ECU and operate at frequencies of up to __ cycles per second.
two
| 15
38
A _____ alignment is required after an engine cradle is replaced.
Wheel
39
Excessive toe-in produces saw tooth tire wear with the points of the saw teeth pointing __. Excessive toe-out will case the points to point towards the ______ of the tire.
In
| Outside
40
Disk brakes resist _____.
Fade
41
The output from the electrical control unit that controls the valves in the hydraulic control unit for one or more wheels is called the ______ channel.
Control
42
____-servo means that the servo action occurs in both forward and reverse
Dual-servo
43
Pistons my be made of _______ resin or steel.
Phenolic
44
Typical torque values for passenger vehicles are between __ ft-lb and ___ ft-lb.
90 ft-lb
| 110 ft-lb
45
________ bars (or sway bars) reduce body roll during vehicle cornering.
Stabilizer
46
FWD rear suspensions can be simplified because all the power train components are in the front. The rear suspension only controls braking torque, ____ roll and lateral forces.
Body
47
Tread depth is usually measured in __nds of an inch.
32nds
48
The ________ differential valve, or safety switch, is a device installed in the brake system to warn the driver of failure of either of the two brake hydraulic systems.
Pressure
49
When the toe settings are out of tolerance by _/_", it is like dragging the tire sideways 28 feet for each mile driven.
1/8"
50
Most front wheel drive vehicles are equipped with factory-_____ ball bearing assemblies.
Sealed
51
Negative scrub radius projects the load towards the ______ of the tire.
Outside
52
The three types of wheel alignment angles that are tire wearing angles are:
1
2
3
Camber
Turning radius
Toe
53
___-servo means that the servo action only occurs when going forward.
Uni-servo
54
On ___ suspension systems, SAI is built-in, non-adjustable angle that is incorporated into the steering knuckle.
SLA
55
Sealed bearing should be inspected for looseness, manufacturers specify a maximum end play of 0.__ mm
0.13
56
Rebound =
Extension
57
The integral ___ system consists of a complex single component. The brake booster, master cylinder, hydraulic pump, hydraulic control unit and _______ may all be part of a single assembly.
ABS
| Accumulator
58
_____ springs are used to pull the shoes back to their rest position when the brake pedal is released.
Return springs
59
Jounce =
Compression
60
Transverse engines commonly use _______.
Transaxles
61
Negative scrub radius creates more steering stability than ______ scrub radius.
Positive
62
Tire replacement is recommended when tread depth reaches _._ mm
1.6mm
63
_____ radius is the distance between the projected steering axis and the centre of the tire contact area, measured at the road surface.
Scrub
64
The camber difference from side to side must not exceed _/_ degree
1/2
65
______ steer means that the vehicle tends to pull in the direction of the most recent turn.
Memory steer
66
___ offset is the difference between the wheel mounting flange and the centerline of the wheel and tire assembly.
Rim offset
67
The steering _______ is the system of pivots and connecting parts that is placed between the steering gear and steering knuckle.
Linkage
68
______ boosters are completely different than vacuum boosters. They use hydraulic pressure generated from a mechanical or electric pump and apply it to the master cylinder.
Hydraulic boosters
69
Two advantages of disk brakes are that they ____ well and are lightweight.
Cool
70
The majority of FWD engines are _______-mounted.
Transverse
71
The difference in turning angles on most vehicles is _ degrees and may be as much as _ degrees on some models.
2
| 4
72
An ABS system may have one, three or four control channels. ____-channel systems are the most common.
Three-channel
73
During a panic stop the front of the vehicles dips and the rear rises. The ________ valve located in the fluid line to the rear brakes will reduce the pressure to the rear brakes and attempt to balance the system.
Proportioning Valv
74
The two spring types used for RWD rear suspension systems are ____ springs and ____ springs.
Leaf
| Coil
75
The combined camber and SAI reading is called the _____ angle.
Included
76
On vehicles with SLA suspension styles, caster can often by adjusted by moving the _____ ball joint forward or rearward.
Upper
77
Fluid lines must be able to withstand pressures as muc as ____PSI
5000
78
On rear suspension coil springs cannot provide fore and aft, lateral and torque control of the axle, so _______ arms and track bars are used.
Control
79
_____ piston master cylinders units operate all 4 brakes on one piston.
Single
80
On a disk and drum combination, a _______ valve may be required.
Metering
81
The _________ strut suspension is popular for its compact, light structure in a great number of north American applications. The spring and shock absorber components are combined.
McPherson
82
At the heart of the brake system, the ______ cylinder transfers mechanical energy into hydraulic energy.
Master
83
The ____-___ system uses a connecting link (or drag link) that connects the pitman arm to the left, front steering knuckle.
Fore-aft
84
The two wheel alignment angles that are used to add steering stability are
1
2
Caster
| Steering Axis inclination
85
If the vacuum booster is damaged in anyway ______ it. This unit has to withstand internal operating pressures of ____ PSI.
Replace
| 2500 PSI
86
Excessive negative caster can cause ______ steering at low speeds and instability at high speeds, combined with _____ and weave.
Wander
87
Wheel speed sensors are permanent magnet generators that produce an _______ current.
Alternating current
88
RWD drive axles are usually hollow; a one or ___-piece design; and can be made of steel, aluminum or _____ metal.
Two
| Fibred
89
Caster spread, the caster difference from side to side, must not exceed _/_ degree
1/2
90
The _________ valve combines the functions of the metering and proportioning valves.
Combination
91
Brake ____ are used to support the brake linings, giving them a rigid foundation.
Shoes
92
____-carrying ball joints are designed to carry the weight of the vehicle through the joint. The two types of load-carrying ball joints are ________ loaded and _____ loaded.
Load-carrying
Compression
Tension
93
______ arms are fitted to the sector shaft of the steering gear on a tapered spline.
Pitman
