• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/82

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

82 Cards in this Set

  • Front
  • Back

1. What should a technician do before servicing the steering column?

Deactivate the Supplemental Restraint System (SRS).

1. If an accident occurs, and a steering column partially collapses, does the whole column need replaced or can it be repaired?

Replaced

1. On a steering diagnosis, what is the first thing that should happen?

Establish the complaint with the operator.

1. On a steering diagnosis, what is the second thing that should happen?

Road Test

1. What is a symptom of a steering column shaft needing adjusted?

Excessive Wander

1. What is a symptom of worn upper and lower bearings?

Excessive Wander & No Steering Recovery

1. What is a symptom of worn U-Joints or flex coupling?

Excessive Wander

1. What is a symptom of a lack of lubrication in the U-Joint or flex coupling?

No Steering Recovery

1. What is a symptom of a bent steering shaft?

No Steering Recovery & Steering Column Binding

1. What is a symptom of U-Joints not installed properly or improperly phased?

No Steering Recovery Steering Column Binding

1. What is a symptom of a loose steering wheel?

Excessive Steering Wheel Movement

1. What is a symptom of a loose steering gear?

Excessive Steering Wheel Movement

1. What is a symptom of a loose pitman arm?

Excessive Steering Wheel Movement


1. What is a symptom of loose or worn steering linkage components?

Excessive Steering Wheel Movement


1. What is a symptom of a steering gear out of adjustment?

Excessive Steering Wheel Movement


1. What is a symptom of column bearings binding or misaligned?

Steering Column Binding

1. When experiencing steering column binding look for

1. U joint or Flex coupling worn or seized


2. Column bearings binding or misaligned


3. Bent steering shaft


4. joints not installed properly or improperly phased

1. How do you check the height control valve?

1. Push down on the valve lever the cab will rise and the flow of air will be Audible


2. Pull lever up the cab will lower flow of air will be Audible

1. When do you know you have issues with the height control valve?

1. When air leaks from the valve after the lever has been returned to the neutral position


2. High air consumption indicating air exhausting excessively


3. An increase in the compressor duty cycle


4. Cab sitting too high or too low

1. When experiencing intermittent or no power steering assist, look for

1. Belt slipping and/or low fluid level


2. Piston or rod binding in power cylinder


3. Sliding sleeve stuck in control valve


4. Pump flow control valve sticking

1. When experiencing hard steering look for

1. Low or uneven tire pressure


2. Insufficient lubricant in steering gear housing or in steering linkage


3. Steering gear adjustment too tight


4. Improper alignment


5. Steering column misaligned


6. Loose or broken pump belt


7. Air in system


8. Low fluid level in pump reservoir


9. Pump output pressure flow


10. Leakage of power cylinder piston rings


11. Binding or bent cylinder linkage


12. Valve spool and or sleeve sticking


13. Column shaft slip joint binding


14. Sector shaft adjustment incorrect

1. When experiencing excessive steering looseness look for

1. Steering gear sector shaft adjusted to lose or shaft and bushing badly worn


2. Excessive steering gear worm end play due to bearing adjustment


3. Steering linkage loose or warm


4. Front wheel bearings in properly adjusted


5. Steering arm loose on steering gear shaft


6. Steering gear housing attaching bolts loose


7. Steering arms loose


8. Worn kingpins or bushings


9. Loose spring shackles


10. Drag link or tie rod ends worn


11. Sector shaft adjustment incorrect due to adjusting with steering linkage connected

1. When the vehicle darts out of a steward line or oversteers look for

1. Poorly lubricated steering gear axle or steering system


2. Steering gear mounting loose at frame


3. Pitman arm loose on steering box output shaft


4. Steering gearbox distorted due to uneven frame mounting service


5. Drag link end binding or loose


6. Drag link or improper length


7. Improper toe in


8. Axle U bolts loose allowing axle to shift on Springs


9. Weak or Broken Springs damaged airbags worn shackle pins bushings anywhere in suspension system


10. Loose Lugnuts


11. Loose tie rod ball joints tie rod arms or steering arm


13. Broken loose engine mounts


14. Vehicle load very poorly distributed


15. Tandem front axle misaligned


16. Worn wheel bearings


17. Excessive front wheel brake drag


18. Twisted, sprung, or diamond shaped frame


19. Kingpin or Kingpin thrust bearing loose binding or seized


20. Bent axle

1. When experiencing High steering effort and One Direction look for

1. Unequal tire pressures


2. Vehicle overloaded


3. Hydraulic system pressure too low


4. High internal linkage in a steering box in One Direction only

1. When experiencing High steering effort in both directions look for

1. Tire pressure low


2. Wheel spindle bent


3. Manual steering assembly binding or misadjusted


4. Power steering unit has low pump pressure due to a defective relief valve low fluid level slipping belt or hydraulic control problem


6. Tie rod ends tight


7. Caster excessive


8. King Pins or ball joints too tight


9. Lack of lubrication to steering and suspension units


10. Tractor trailer 5th wheel damaged or galled improperly lubricated or improperly positioned


12. Axle u-bolts loose so axle shifts and becomes improperly aligned


13. Loose wheel lug nuts


14. Very loose tie rod ball joints tie rod arms steering arms


15. Misadjusted front brakes

1. When experiencing excessive play in the steering wheel look for

1. wheel loose on steering shaft


2. loose connection among steering gear intermediate column and steering column


3. steering gear improperly bolted to frame


4. pitman arm loose on output shaft


5. worn steering linkage components


6. steering gear improperly adjusted

1. What do you use to check the fluid temperature of a power steering reservoir?

A thermometer

1. Where do you install the high pressure shut off valve and pressure gauge when checking the pressure on a power steering system?

On the output of the pump

1. Where do you install a flow measuring valve when checking a power steering system?

On the output of the pump

1. True or false. When identical belts are used on the same drive, they must be replaced separately?

False. They must be replaced as matched sets.

1. How often should the torque valve on an air assist steering power cylinder be cleaned?

Every 100,000 miles as routine maintenance.

1. What is the measurement for the relief valve plunger adjustment?

3/8 to 3/16 inch

2. As a temporary remedy to eliminate some play in the Kingpin what can you do?

Lubricate the kingpin

2. When checking for excessive Kingpin wear also check for:

1. Worn, cracked, misaligned, or missing seals, and gaskets


2. Damage due to the high levels of road salt


3. Misaligned seals, bearings, shims, bushings, or Draw keys


4. Incorrect lubricant being used


5. Lubrication interval inadequate either according to basic schedule or the need to lubricate more often in the particular application


6. Lubrication not being applied properly


7. Knuckle bore out of round, distorting knuckle bushings

2. Which end of a leaf spring arrangement is normally free to move?

Normally the rear end

2. When the leaf spring Arrangement is free to move on one end, what is used to hold it in place?

Either a shackle arrangement or by just having the end free to slide back and forth as the spring flexes

2. If the top plate is worn bent or cracked it will need to be replaced because

It will not seat flat against the top spring

2. If a u bolt is struck with a brass hammer and it is clamped effectively should it sound like a dull thud or a ringing sound?

Ringing sound

2. What grade bolts should be used when replacing a U Bolt?

Grade 7 for Highway trucks and grade 8 for off road

2. When should a torque arm be replaced?

When it has moved 1/8 inch from it's original position.

1. It the steering system runs to hot look for

1. Pump flow to high


2. Vehicle overloaded


3. Replacement hose too small in diameter, or correct hose is kinked, bent to severe angle or clogged


4. Steering column binds or input shaft has side load due to misalignment


5. Poppet malfunctioning


6. Prolong stationary vehicle operation

2. If two leaves have broken on a set of leaf springs what is the recommended repair procedure?

Replace the entire set.

2. True or false: U bolts can be reused.

False. They should never be reused.

3. If a wheel is pointed outward at the top what type of camber is this?

Positive Camber

3. If a wheel is pointed inward at the top what type of camber is this?

Negative Camber

3. Can a trucks camber be adjusted by bending the solid beam axle?

Yes. But it is not recommended by most manufacturers and in most cases will void the warranty.

3. Should heat be applied to an axle in order to make a bend?

No. It should be done cold.

3. When checking the included angle on both sides of the axle, what should they be?

Equal on both sides.

3. When the top of the kingpin is pointed toward the back of the truck it is called ___________.

Positive Camber

3. When the top of the kingpin is pointed toward the front of the truck it is called ___________.

Negative Camber

3. Positive Caster does what to drivability?

It helps the driver steer straight.

3. Negative Caster does what to drivability?

It helps the driver steer better with less directional stability.
3. When the front centerline of the front wheels is less distance than the rear centerline of the front wheels, what is that known as?

Toe In

3. If a truck is not tracking properly, it can usually be found in what two things?

The frame or the alignment of the rear axle.

4. If a tire is rated to carry more than 4,000 lbs. it should be inflated to ______ psi ______ the standard cold operating pressure.

15; beyond

4. If a tire is rated to carry less than 4,000 lbs. it should be inflated to ______ psi ______ the standard cold operating pressure.

5; beyond

4. Can a re-grooved tire be used on the highway?

No

4. What is the minimum tread depth for steer tires?

2/32"

4. What is the minimum tread depth for drive tires?

1/32"

4. What is the area of loss that a drive tire can have before it is prohibited?

75% of tread width and 12" of total circumference.

4. What is a blue triangle used for?

It is used when there is a bulge in sidewall that is less than 3/8". It will cover the bulge.

4. What is most likely the cause if a tire has rapid wear at the shoulders?

Under-Inflated

4. What is most likely the cause if a tire has rapid wear at the center?

Over-Inflated

4. What is most likely the cause if a tire has cracked treads?

Under-Inflated or Excessive Speeds

4. What is most likely the cause if a tire has wear on one side?

Excessive Camber

4. What is most likely the cause if a tire has a feathered edge?

Incorrect Toe-In

4. What is most likely the cause if a tire has bald spots?

Unbalanced tire.

4. What is most likely the cause if a tire has scalloped wear?

Lack of rotation or worn or out of alignment suspension.

4. If a wheel's stud holes are elongated or cracked, what is most likely the cause?

Bent rims or riding with wheels loose.

4. A disc wheel must not have _______ cracks of any kind or dimension.

two

4. A disc wheel must not have _____ crack that exceeds _____ inches in length.

One; 3

4. A disc wheel must not have _____ % or more of the stud holes elongated.

50

4. A spoke wheel must not have two or more cracks of ___" or greater in length across spoke or hub sections.

1

4. A spoke wheel must not have _____ or more web areas cracked.

two

4. There must not be cracks at _______ or more spokes.

three

4. If a single stud has been found broken, what should be the repair action?

Replace the entire group of studs.

4. If vibration is coming from the steering wheel, it is most likely a ________ tire problem.

Front

4. If vibration is coming from the seat or chassis, it is most likely a ________ tire problem.

Rear


4. If vibration is present when a trailer is attached and gone when it is not there, it is most likely a ________ tire problem.

Trailer

4. Up & down runout is known as __________.

Radial Runout

4. Side to side runout is known as ____________.

Lateral Runout

4. Methods to match dual tires on an axle are:


1. Measuring with endless tape.


2. Use of a straightedge.


3. Use of a square.


4. Use of tire caliper.


5. Use of string gauge.


6. Use of a matching stick.