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275 Cards in this Set
- Front
- Back
Advantages of a large Positive scrub radius
|
The tire rolls while turned, resulting in reduced steering effort when parking.
More room in the engine bay |
|
advantage of Negative Scrub radius
|
provides center point steering in the event of a tire deflation, which provides greater stability and steering control in this emergency situation.
|
|
Advantage of a small positive scrub radius
|
that the steering becomes less sensitive to braking inputs, in particular.
|
|
Disadvantage of a small positive scrub radius
|
the contact patch is spun in place when parking, which takes a lot more effort
|
|
Scrub radius is...
|
the distance in front view between the king pin axis and the center of the contact patch of the wheel, where both would theoretically touch the road
|
|
The steering axis inclination (SAI) is
|
the angle between the centerline of the steering axis and vertical line from center contact area of the tire (as viewed from the front).
|
|
|
Negative scrub radius
|
|
|
Positive scrub radius
|
|
|
zero scrub radus
|
|
T/F
Loose front wheel bearing adjustment may cause steering wander while driving straight ahead |
True
|
|
T/F
Negative caster settings may cause steering wander while driving straight ahead |
True
|
|
When performing a sector lash adjustment on a recirculating ball steering gear, the worm shaft is positioned (...)
|
in the center of its travel
|
|
T/F
A leaking rack piston seal may cause a power rack and pinion gear to have excessive steering effort in both directions |
True
|
|
T/F
A leaking inner rack seel may cause a power rack and pinion gear to have excessive steering effort in both directions |
False
This will increase steering effort in only one direction |
|
T/F
A leaking outer rack bulkhead seal may cause a power rack and pinion gear to have excessive steering effort in both directions |
False
This will increase steering effort in only one direction |
|
T/F
A loose rack bearing adjustment may cause a power rack and pinion gear to have excessive steering effort in both directions |
False
this will reduce steering effort |
|
T/F
A faulty power steering gear may cause a PS pump to have less than specified pressure during a pressure test. |
False
A valve in the tester closes the hose between the pump and the gear |
|
T/F
A sticking pump pressure relief valve may cause a PS pump to have less than specified pressure during a pressure test. |
True
|
|
T/F
A bent or damaged rack in the steering gear may cause a power rack an pinion steering system to have poor steering wheel returnability. |
False
It will cause erratic steering effort |
|
T/F
Excessive negative caster may cause a power rack an pinion steering system to have poor steering wheel returnability. |
True
|
|
T/F
Worn steering gear mounting bushings may cause bump steer on a vehicle with power rack and pinion steering |
True
worn steering gear mounting bushings may cause unequal tie rod height, the cause of bump steer |
|
T/F
Worn upper strut mounts may cause bump steer on a vehicle with power rack and pinion steering |
False
Worn upper strut mounts don't cause unequal tie rod height |
|
The root cause of bump steer is (...)
|
Enequal tie rod height
|
|
T/F
An open compressor vent valve may cause the front suspension trim height on a computer controlled air suspension system to be less than spec |
False
one or more of the air spring solenoids must also be open to vent air from the springs and cause low trim height |
|
T/F
Misadjusted front height sensors may cause the front suspension trim height on a computer controlled air suspension system to be less than spec |
True
|
|
While parking a car with four-wheel steering, the rear wheels...
|
steer about five degrees in the opposite direction of the front wheels
|
|
T/F
A loose powersteering belt may cause fluid foaming to occur in a power steering pump reservoir. |
False
|
|
T/F
Fluid contamination may cause fluid foaming to occur in a power steering pump reservoir. |
True
|
|
A variable assist power steering system provides...
|
Increased pump pressure at low speeds
|
|
T/F
Improper dynamic wheel balance may cause the customer to complain about front wheel shimmy |
True
|
|
T/F
Excessive toe-in on the front wheels may cause the customer to complain about front wheel shimmy |
False
|
|
T/F
Excessive poitive caster on the front wheels may cause the customer to complain about front wheel shimmy |
True
|
|
T/F
Sagged springs in the rear suspension may cause the customer to complain about front wheel shimmy |
True
|
|
T/F
More toe out on the right rear wheel than on the left rear wheel may cause the steering wheel to pull to the right while driving straight ahead |
False
|
|
T/F
More positive camber on the left front wheel than on the right front wheel may cause the steering wheel to pull to the right while driving straight ahead |
False
|
|
T/F
More toe out on turns on the left front wheel than on the right front wheel may cause the steering wheel to pull to the right while driving straight ahead |
False
|
|
T/F
More positive caster on the left front wheel than on the right front wheel may cause the steering wheel to pull to the right while driving straight ahead |
True
|
|
During a shock absorber bounce test, if the chassis completes one free upward bounce before the vertical chassis movement stos, the shock abosrber is...
|
good
|
|
T/F
Excessive difference between the left and right SAI may cause a vehicle with a macpherson strut front supsension to pull to the left while braking. |
True
|
|
T/F
Excessive positive camber on the left rear wheel may cause a vehicle with a macpherson strut front supsension to pull to the left while braking. |
False
|
|
T/F
A worn flexible coupling may cause a steering wheel to have excessive freeplay with all linkages and column mounted and installed |
True
|
|
T/F
Loose steering gear mounting bolts may cause a steering wheel to have excessive of freeplay with all linkages and column mounted and installed |
True
|
|
Steering wheel free play should not exceed (...)
|
~1.2 in. (30 mm)
|
|
T/F
If the bolt head is touching the bracket on a collapsible steering column bracket, it should be replaced |
True
|
|
T/F
If the bolt head is touching the bracket on a collapsible steering column bracket, the shear load is too small. |
False
T/F If the bolt head is touching the bracket on a collapsible steering column bracket, the shear load is too hight. |
|
T/F
Some air bag systems are disarmed by disconnecting the battery cable and waiting for the specified amouont of time |
True
|
|
T/F
Air bag system disarming on some vehicles includes disconnecting the air bag system fuse |
True
|
|
T/F
The surface of deployed airbags may be coated with sodium bicarbonate |
False
they may be coated with sodium hydroxide |
|
T/F
After the air bag system has been disarmed and enabled the arbag system warning light operation indcates proper system function |
True
|
|
T/F
a loose worm bearing preload adjustment may cause excessive steering effort on a manual steering gear (non rack and pinion) |
False
A loose worm bearing preload adjustment will cause excessve steering wheel free play |
|
T/F
an overfilled steering gear may cause excessive steering effort on a manual steering gear (non rack and pinion) |
False
|
|
T/F
Less than spec positive caster may cause excessive steering effort on a manual steering gear (non rack and pinion) |
False
reduced caster reduces steering effort |
|
T/F
A tight sector lead lash adjustment may cause excessive steering effort on a manual steering gear (non rack and pinion) |
True
|
|
A tight worm bearing on a manual steering gear (non rack and pinion)may result in...
|
excessive steering effort
|
|
T/F
A loose rack bearing adjustment may result in poor returnability on a manual rack and pinion steering gear |
False
a loose rack bearing adjust ment results in excessive steering wheel freeplay |
|
T/F
Insufficient or improper lubricant in the steering gear may result in poor returnability on a manual rack and pinion steering gear |
True
|
|
T/F
loose steering gear mounting bolts may result in poor returnability on a manual rack and pinion steering gear |
False
Loos steering gear mounting bolts may result in excessive steering wheel freeplay |
|
T/F
Excessive positive camber on both front wheels may result in poor returnability on a manual rack and pinion steering gear |
False
Excessive positive camber results in excessive wear on the outside edge of the tire treads |
|
The normal operating temperature of power steering fluid is...
|
175 Deg F. (80 Deg C)
|
|
when checking PS pump belt tension, for every foot of free span, belt deflection should be...
|
1/2 inch
|
|
T/F
Reduced PS pump belt tension may result in increased or erratic steering effort |
True
|
|
T/F
A loose PS belt may cause squealing during acceleration |
True
|
|
T/F
A misaligned PS pump may cause premature belt wear |
True
|
|
T/F
Pressed on PS pump pulleys may require the use of a special tool to remove and install |
True
|
|
T/F
A faulty drive shaft seal may cause a fluid leak between the reservoir and the pump housing on a pump with integral reservoir. |
False
|
|
T/F
A restricted vent in the pump cap may cause a fluid leak between the reservoir and the pump housing on a pump with integral reservoir. |
False
|
|
T/F
A faluty housing O-ring may cause a fluid leak between the reservoir and the pump housing on a pump with integral reservoir. |
True
|
|
During a power steering pump pressure test, the pressure gauge valve should be closed for a maximum of (...) seconds.
|
Ten
|
|
1.
2. 3. |
1. power steering gearbox
2. power steering pump 3. power steering oil tank |
|
|
manual steering system
|
|
|
power rack and pinion
|
|
|
Power steering gear
|
|
|
power steering pump
|
|
|
manual steering gear
|
|
T/F
A defective steering gear may cause excessive turning effort even though the pump pressure is satisfactory. |
True
|
|
T/F
A restricted high pressure hose may cause excessive turning effort even though the pump pressure is satisfactory. |
True
a restricted High Pressure hose may cause excessive turning effort, without causing the system to fail a pressure test |
|
(non rack and pinion)
Rotating the steering wheel while the steering gear is disconnected from the shaft may result in... |
an improperly centered clockspring
|
|
T/F
Rotating the steering wheel with the steering gear disconnected may damage the clockspring electrical connector |
True
|
|
T/F
After the negative battery cable is disconnected, immediately begin the steering gear removal process |
False
You may have to wait due to proper air bag procedures |
|
T/F
During a powersteering gear adjustment (worm shaft bearing preload), after the adjuster plug is bottomed out, it should be tightened to 20 ft lb |
True
after tightening to 20 ft lb, you may need to back of .050 in. |
|
T/F
During a powersteering gear adjustment, the adjuster plug should be backed off 1/4 turn from the bottomed position |
False
|
|
T/F
The worm shaft bearing preload must be adjusted after the bearing and seal installation in the adjuster plug |
True
|
|
T/F
the part number on the needle bearing should face the driving tool when installing the adjuster plug bearing |
True
|
|
T/F
a misaligned steering gear may cause poor steering wheel returnablity on power rack and pinion systems |
false
|
|
T/F
an overtight rack bearing adjustment may cause poor steering wheel returnablity on power rack and pinion systems |
True
due to increased steering effort as a result of the overtight rack bearing adjustment |
|
T/F
Inner tie rod ends may be retained on the rack with a steel pin |
True
|
|
T/F
Inner tie rod ends may be retained on the rack with with a claw washer |
True
|
|
T/F
Inner tie rod ends may be retained on the rack by being threaded onto the rack |
True
|
|
T/F
If foaming is present in the reservoir after bleeding air from the system, the procedure must be repeated |
True
|
|
T/F
During PS bleding, each time the steering wheel is rotated fully to the right or left, it should be held for two or three seconds |
True
|
|
A power steering system should be drained from...
|
The return hose
|
|
when bleeding the power steering system using the steering wheel, the engine should be held at (...) rpm
|
1,000
|
|
T/F
on variable assist power steering systems, the steering assist is increased at speeds above 50 mph |
False
|
|
T/F
the power steering assist is increased when the steering wheel rotation exceeds 15 rpm |
True
|
|
Bump steer may result if the steering arms and lower control arms are ...
|
not parallel
|
|
excessive idler arm movement may cause (...), (...), (...), and (...)
|
front wheel shimmy, steering looseness, improper tie rod alignment with the lower control arms, and bump steer.
|
|
variable assist power steering systems receive signals from the (...), and (...)
|
Vehicle Speed Sensor, and Steering wheel rotation sensor
|
|
T/F
A misadjusted steering gear may cause bump steer |
False
|
|
T/F
A bent pitman arm may cause bump steer |
True
|
|
T/F
A loose or misadjusted Idler arm may cause bump steer |
True
|
|
other names for center link:
|
relay rod, drag link, intermidiate rod
|
|
T/F
A bent relay rod may change front wheel toe setting |
True
|
|
T/F
A bent relay rod may cause front tire wear on the inside edges |
False
|
|
Improper front wheel Toe may cause (...) tire wear
|
Feathered
|
|
T/F
Worn lower ball joints may cause excessive steering effort. on a PS system with a properly adjusted belt and fluid level. |
False
|
|
T/F
Weak front springs may cause excessive steering effort. on a PS system with a properly adjusted belt and fluid level. |
False
|
|
T/F
a seized idler arm may cause excessive steering effort. on a PS system with a properly adjusted belt and fluid level. |
True
|
|
T/F
a weak stabilizer bar may cause excessive steering effort. on a PS system with a properly adjusted belt and fluid level. |
False
|
|
T/F
Vise grips or a pipe wrench should be used to rotate tie rod sleeves |
False
|
|
T/F
tie rod sleeve clamps must have the openings lined up with the openings in the tie rod sleeve. |
False
|
|
T/F
a scored power steering gear cylinder may cause a 4wd vehicle to have excessive road shock on the steering wheel while driving on irregular road surfaces |
False
|
|
T/F
a worn out steering damper may cause a 4wd vehicle to have excessive road shock on the steering wheel while driving on irregular road surfaces |
True
|
|
T/F
A scored power steering gear cylinder will reduce steering effort |
False
|
|
The steering damper is usually connected from the (...) to the (...)
|
Relay rod (drag link) to the chassis
|
|
T/F
Worn out struts may cause the front suspension height to be less than specified on a macpherson strut system. |
False
|
|
T/F
worn upper strut mounts may cause the front suspension height to be less than specified on a macpherson strut system. |
False
|
|
T/F
worn steering gear mounting bushings may cause the front suspension height to be less than specified on a macpherson strut system. |
False
|
|
T/F
worn lower control arm bushings may cause the front suspension height to be less than specified on a macpherson strut system. |
True
|
|
|
macphearson strut
|
|
|
double wishbone suspension
(upper and lower A-arm) |
|
SLA is a type of...
|
double wishbone independent suspension
Short Long Arm |
|
T/F
worn upper and lower ball joints may result in severely damaged rebound bumpers |
False
|
|
T/F
Defective front shocks may result in severely damaged rebound bumpers |
True
|
|
T/F
a worn right fron strut rod bushing may cuse a vehicle with satsifactory brake equipment to pull to the right while braking, |
True
|
|
T/F
Excessive negative camber on the right front wheel may cuse a vehicle with satsifactory brake equipment to pull to the right while braking, |
False
|
|
T/F
Excessive negative camber on one front wheel will casue steering pull to the opposite side |
True
|
|
T/F
a worn right front strut rod bushing may result in the lower control arm moving rearward while braking |
True
|
|
T/F
Ride height should always be one of the first checks when performing wheel alignment |
True
|
|
Strut rods are connected from (...) to the (...).
|
Lower control arrm to the chassis
|
|
Stut rods prevent (...) and (...) movement of the lower control arm
|
Fore and Aft
|
|
Steering pulls to the side with the (...) positive caster
|
Least
|
|
In order to measure ball joint wear, the vehicle weight must be...
|
unloaded from the ball joints
|
|
when the coil spring is betwen the lower control arm and the chassis on a SLA suspension, unloading the vehicle weight from the ball joints may requre...
|
jacking the vehicle up from the lower control arm
|
|
when the coil spring is betwen the upper control arm and the chassis , unloading the vehicle weight from the ball joints may requre...
|
lifting from the chassis with a steel spacer between the upper control arm and the chasis
|
|
T/F
Installing a different shim between the front axle and the leaf spring may correct right front tire tread wear on the inside edge |
False
|
|
T/F
replacing the rear spring shackle may correct right front tire tread wear on the inside edge |
False
|
|
T/F
The shims between the front axle and the leaf spring are used to adjust camber |
False
the are used to adjust caster |
|
T/F
Wear on the inside edge of the tire is caused by excessive ... |
Negative camber
|
|
Tire Wear:
Feathering |
Toe adjustment
|
|
inner/outer wear
|
Camber
|
|
excessive wear on the center of tire
|
over inflation
|
|
Excessive wear on the outer edges of tire
|
Under inflation
|
|
T/F
a bent steering arm may cause excessive tire squeal while cornering |
True
|
|
T/F
excessive negative caster may cause excessive tire squeal while cornering |
false
|
|
T/F
worn stabilizer bushings may cause excessive tire squeal while cornering |
false
|
|
T/F
worn out front struts may cause excessive tire squeal while cornering |
false
|
|
Excessive tire squeal while cornering is caused by incorrect (...) angle
|
Toe angle
|
|
T/F
Bent steering arms and knuckles must be replaced, never repaired. |
True
|
|
(...) spring
|
linear rate
|
|
(...) spring
|
Variable rate
|
|
T/F
When using a spring compressor to remove a coil spring from a strut, the spring should be taped in the areas where the compressor contacts the spring |
True
|
|
T/F
When using a spring compressor to remove a coil spring from a strut, all the spring tension must be removed from the upper strut mount before loosening the strut or rod nut |
True
|
|
T/F
coil springs may be replaced individually |
False
|
|
T/F
steering pull to the right with a SLA front and leaf spring rear may be caused by a broken center bolt in the rear spring |
True
|
|
T/F
steering pull to the right with a SLA front and leaf spring rear may be caused by more positive caster on the left front wheel than the right front wheel |
True
|
|
T/F
steering pull to the right with a SLA front and leaf spring rear may be caused by more positive camber on the right front wheel than the left front wheel |
True
|
|
T/F
steering pull to the right with a SLA front and leaf spring rear may be caused by excessive toe in on front wheels |
False
|
|
The steering may pull to the side with (...) positive camber
|
More
|
|
T/F
Broken center pins on rear leaf springs may affect vehicle tracking and cause steering pull |
True
|
|
T/F
lower than specified suspension height on the right front of a torsion bar suspension with satisfactory height on the left front may be caused by worn lower control arm bushings |
True
|
|
T/F
lower than specified suspension height on the right front of a torsion bar suspension with satisfactory height on the left front may be caused by the right front torsion bar anchor bolt being out of adjustment |
True
|
|
T/F
Worn lower control arm bushings may cause reduced ride height |
True
|
|
T/F
excessive body sway while cornering may be caused by worn strut rod bushings |
false
|
|
T/F
excessive body sway while cornering may be caused by a weak stabilizer bar |
true
|
|
T/F
excessive body sway while cornering may be caused by worn stabilizer bar bushings |
true
|
|
T/F
excessive body sway while cornering may be caused by a broken stabilizer link |
true
|
|
Worn strut rod bushing may cause...
|
steering wander while driving and rattling or
clunking while driving or braking on rough roads |
|
T/F
on some vehicles the strut cartridge can be installed with the strut still installed in the vehicle |
True
|
|
T/F
A damaged upper strut mount may result in strut chatter while cornering on a macphearson strut system |
True
|
|
T/F
A worn lower ball joint may cause steering chatter while cornering on a macphearson strut system |
False
|
|
T/F
A damaged upper strut mount may result in improper camber or caster angles on the front suspsension |
True
|
|
T/F
Faulty rear struts may cause harsh riding and bottoming out of the rear suspension |
True
|
|
T/F
less than specified rear ride height may cause harsh riding and bottoming out of the rear suspension |
True
|
|
A worn track bar or bushings may cause (...) in the rear suspension
|
Excessive lateral movement
|
|
Many ball joints use the (...) as a wear indicator
|
Grease fitting
|
|
T/F
A worn ball joint may cause improper wheel camber |
True
|
|
T/F
A bent rear spindle may cause feathered tread wear similar to a toe-in situation |
True
|
|
During a rear wheel hub bearing adjustment :
Step 1. |
tighten the bearing adjustment nut to 17-25 ft lbs
|
|
During a rear wheel hub bearing adjustment :
Step 2. |
back of the adjustment nut 1/2 turn
|
|
During a rear wheel hub bearing adjustment :
Step 3. |
tighten the adjustment nut to 10-15 in lbs
|
|
During a rear wheel hub bearing adjustment :
Step 4. |
install the nut retainer and cotter key
|
|
T/F
the on/off switch of an electronically controlled suspension should be switched off when towing |
true
|
|
T/F
the on/off switch of an electronically controlled suspension should be switched off when jacking up the vehicle |
true
|
|
T/F
the on/off switch of an electronically controlled suspension should be switched off when hoisting the vehicle on a lift |
true
|
|
T/F
the on/off switch of an electronically controlled suspension should be switched off when diagnosing the system with a scanner |
False
|
|
T/F
the subframe (cradle) may be measured at various locations to determine if it is bent |
True
|
|
T/F
some subframes (cradles) have an alignment hole that must be aligned with a hole in the chassis |
True
|
|
T/F
In an electronic power steering system the electric motor that proiveds steering assist is mounted seperately from the steering gear |
False
|
|
T/F
In an electronic power steering system the Vehicle speed sensor voltage signals are sent directly from the vss to the eps control unit |
false
|
|
T/F
In an electronic power steering system the steering sensor is mounted in the steering gear housing so it senses rack movement |
False
|
|
T/F
In an electronic power steering system, if the car has a manual transaxle a differential speed sensor is used in place of the vss |
True
|
|
T/F
In an electronic power steering system the steering sensor is mounted in the ... |
pinion shaft assembly
|
|
On some systems, when the power steering pressure exceeds the specified value, the PCM may shut off the ... to prevent stalling
|
A/C compressor
|
|
On some systems, when the power steering pressure exceeds the specified value, the PCM may operate the... to prevent stalling.
|
Idle Air Control motor
|
|
Steering pulls to the side with the most (...) camber
|
Positive
|
|
Torque steer may be caused by (...) on FWD vehicles
|
enequal length drive axles
|
|
T/F
Increased steering effort and rapid steering wheel return after cornering may be a result of both front wheels having a negative camber seting |
False
|
|
T/F
Increased steering effort and rapid steering wheel return after cornering may be a result of reduced rear suspension cur riding height. |
True
|
|
Reduced rear suspension curb riding height may cause (...) (...) caster on the front wheels.
|
excessive positive
|
|
T/F
Rear wheel camber may be adjusted by elongating the strut to knuckle bolt hole with a file on macphearson strut systems. |
True
|
|
T/F
Rear wheel camber may be adjusted by moving the upper strut mount in elongated slots on macphearson strut systems |
False
|
|
T/F
When equal shims are installed on both front control arms of a SLA front supsension, Camber is reduced |
True
|
|
T/F
When equal shims are installed on both front control arms of a SLA front supsension, caster is increased |
False
|
|
T/F
When equal shims are installed on both front control arms of a SLA front supsension, caster is reduced |
False
|
|
T/F
When equal shims are installed on both front control arms of a SLA front supsension, SAI angle decreases |
False
|
|
On an SLA suspension, the upper control arm length is (...) compared to the lower control arm.
|
Shorter
|
|
T/F
Excessive positive caster on the front suspension may cause harsh riding on the front suspension, excessive steering effort and rapid wheel return |
True
|
|
T/F
A more than specified included angle on the front suspension may cause harsh riding on the front suspension, excessive steering effort and rapid wheel return |
False
|
|
included angle is the sum of...
|
Camber and SAI angles
|
|
Less than specified caster may cause (...) while driving straight ahead
|
Reduced directional stability
|
|
T/F
Caster is measured with the front wheels straight ahead |
False
|
|
T/F
the front wheels are turned 20 deg outward and then 20 deg inward to read the caster angle |
true
|
|
T/F
The brakes must be applied with a brake pedal jack before reading the caster angle |
True
|
|
T/F
The front suspenion should be jounced several times before reading the caster angle |
true
|
|
T/F
The front wheels must be in the straight ahead position when meausring front wheel toe |
True
|
|
T/F
the front wheel toe whould be adjusted before the caster angle on the front suspension |
False
|
|
T/F
after the toe adjustment, the steering wheel must be centered with the front wheels straight ahead |
True
|
|
T/F
While adjusting front wheel toe, a tie rod sleeve rotating tool must be used to turn the tie rod sleeves. |
true
|
|
Front wheel toe should be measured (...) the caster is adjusted.
(before/after) |
after
|
|
T/F
The steering wheel is slightly rotated left after the toe is set to spec, legnthening the left and shortening the right tie rod will correct this. |
false
|
|
T/F
The steering wheel is slightly rotated left after the toes is set to spec, rotating each tie rod sleeve 2 turns will correct this. |
False
|
|
Shortenging the left tie rod and legnthening the right will turn the wheel toward the...
|
right
|
|
Rotating both tie rod sleeves will (...) turn will move the steering wheel 1 inch
|
1/4
|
|
The turning radius is usually (...) degrees more than the turning radius on the wheel on the outside of the turn
|
2
|
|
If the steering radius is not within spec, the (...) may be bent.
|
steering arms
|
|
If the steering radius is not within spec, the (...) may be worn
|
Tie rod ends
|
|
on a macphearson strut suspension, SAI is the angle between the true verticle centerline of the (...) and a line through the center of the (...) and (...)
|
tire, lower ball joint, upper strut mount
|
|
on SLA suspensions, the SAI is a line through...
|
the upper and lower ball joints
|
|
SAI is always viewed from...
|
the front of the vehicle.
|
|
inproper king pin inclination on an I-beam front suspension may be caused by...
|
a bent front axle or worn king pin bushings
|
|
The max variance between left and right SAI angles is usually...
|
1.5 deg
|
|
excessive included angle variance on front wheels is brobably caused by (...) on one of the wheels.
|
improper SAI
|
|
Improper SAI is most often caused by improper (...) position, or bent (...)
|
improper strut tower or subframe (cradle) position,
or bent crossmember or lower control arms |
|
Excessive toe out on the left rear may cause steering pull to the...
|
right
|
|
A thust line positioned right of the geometric centerline may be caused by excessive...
|
Toe out on the right rear wheel.
|
|
The vehicle pulls to the (...) side of the thrust angle
|
Opposite
|
|
on a non independant rear axle assembly, the entire rear axle assembly may be turned slightly in one direction. this is called...
|
rear axle offset
|
|
T/F
Front wheel setback is usually caused by worn suspension parts |
false
|
|
T/F
a slight front wheel setback causes steering wheel pull |
False
|
|
Front wheel setback is usually caused by...
|
collision damage
|
|
Only (...) front wheel setback may cause steering pull.
|
excessive
|
|
T/F
A FWD vehicle has excessive positive camber on the left front, and excessive negative camber on the right front wheel, this may be caused by the cradle (subframe) shifting to the right |
True
|
|
T/F
A FWD vehicle has excessive positive camber on the left front, and excessive negative camber on the right front wheel, this may be caused by a bent left front lower control arm |
False
|
|
Cupped tire tread wear is most often caused by...
|
wheel imbalance
|
|
T/F
Replacing only the rear tires with considerably larger than OEM specs, may cause reduced front wheel positive caster and directional stability |
True
|
|
T/F
Replacing only the rear tires with considerably larger than OEM specs, may cause increased positive camber on the front wheels and increased front tire tread wear |
False
|
|
T/F
Replacing only the rear tires with considerably larger than OEM specs, may cause increased steering effort |
False
|
|
T/F
Replacing only the rear tires with ones considerably larger than OEM specs, may cause rapid steering wheel return. |
False
|
|
T/F
Front wheel shimmy may be caused by excessive toe out |
False
|
|
T/F
Front wheel shimmy may be caused by inproper wheel balance |
True
|
|
T/F
Front wheel shimmy may be caused by excessive front wheel setback |
false
|
|
T/F
Front wheel shimmy may be caused by excessive positive camber |
False
|
|
T/F
Front wheel shimmy may be caused by excessive positive caster |
True
|
|
T/F
Front wheel shimmy may be caused by loose steering wheel components |
True
|
|
tire radial runout describes...
|
...describes the deviation of the tire’s roundness from a perfect circle
|
|
Tire lateral runout
|
describes the deviation of the tire’s sidewall from a perfect plane
|
|
this rotation pattern can be used on (...) vehicles
|
Rwd and 4wd
|
|
this rotation pattern can be used on (...) vehicles
|
FWD
|
|
T/F
Rear chassis waddle may be caused by a steel belt in a tire that is not straight |
true
|
|
T/F
Rear chassis waddle may be caused by a bent rear hub flange |
True
|
|
T/F
Steering pull to the left may be due to the front tires having two different tread designs |
True
|
|
T/F
Steering pull to the left may be due to one of the front tires having a conicity problem |
True
|
|
Tire Conicity is ...
|
the characteristic that describes the tire’s tendency to roll like a cone
|
|
Tire Conicity is caused during...
|
the manufacturing process
|
|
tires should be placed on the tire changer with the narrow bead ledge facing...
|
upward
|
|
when performing sector lash adjustment on a recirculating ball steering gear, the steering gear is in the center position and the steering shaft is rotated through a 45 degree arc with an inch pound torque wrench. the sector lash adjustment should be rotated in...
|
a clock wise direction
|
|
If the worm shaft bearings are too loose...
|
the worm shaft can move sideways and up and down during operation
|
|
OVER CENTER CLEARANCE...
|
Controls the amount of play between the pitman arm shaft gear (sector) and the teeth on the ball nut. It is the most critical adjustment affecting steering wheel play.
|
|
Disconnect the pitman arm from the pitman arm shaft. Loosen the pitman arm shaft overcenter adjusting locknut and screw out the adjusting screw a couple of turns. Then turn the steering wheel from side to side slowly
|
worm-bearing preload step one
|
|
Using a torque wrench or spring scale, measure the amount of force required to turn the steering wheel to the CENTER position. Note the reading on the torque wrench or the spring scale and compare it to the manufacturers specifications
|
worm-bearing preload step two
|
|
If readings are out of specifications. loosen the worm-bearing locknut. Then tighten the worm bearing adjustment nut to increase the preload. Loosen it to decrease preload and turning effort. With the preload set to specifications. tighten the locknut. Make sure the steering wheel turns freely from stop to stop
|
worm-bearing preload step three
|
|
Most rack-and-pinion systems have a rack guide adjustment screw. This screw is adjusted when...
|
there is excessive play in the steering
|
|
Basic procedure for adjusting rack-and-pinion steering system step one
|
Loosen the locknut on the adjusting screw
|
|
Basic procedure for adjusting rack-and-pinion steering system step two
|
turn the rack guide screw until it bottoms slightly
|
|
Basic procedure for adjusting rack-and-pinion steering system step three
|
Back off the rack guide screw the recommended amount (approximately 45 degrees or until the prescribed turning effort is achieved)
|