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ASE S5 Suspension & Steering (School Bus) Practice Questions - ASE S5 - Suspension & Steering (School Bus) Certification Exam
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Question
1
of 25
QUESTION 1 / 25
A school bus exhibits hard steering only when the engine is cold, improving as it warms up. Tech A says a worn power steering pump can cause this. Tech B says cold, thick power steering fluid combined with a partially restricted hose can cause temporary hard steering. Who is correct?
Choose one answer below.
A
Tech A only
✓
B
Tech B only
✓
C
Both Tech A and Tech B
✓
D
Neither Tech A nor Tech B
✓
QUESTION 2 / 25
During a kingpin inspection on a school bus front axle, the technician finds excessive vertical (up-and-down) play at the steering knuckle. This wear most directly indicates a worn:
Choose one answer below.
A
Thrust bearing or shims at the kingpin
✓
B
Tie-rod end socket
✓
C
Drag link ball stud
✓
D
Pitman arm spline
✓
QUESTION 3 / 25
A school bus integral power steering gear leaks fluid from the sector shaft seal. The most likely root cause to check before simply replacing the seal is:
Choose one answer below.
A
A loose steering wheel nut
✓
B
A worn sector shaft or bushing letting the shaft move
✓
C
An overfilled reservoir only
✓
D
A bent pitman arm
✓
QUESTION 4 / 25
What is the primary purpose of the steering damper (stabilizer) sometimes used on school bus front steering linkage?
Choose one answer below.
A
To increase power steering assist
✓
B
To set the steering gear preload
✓
C
To dampen road shock and reduce steering wheel kickback and shimmy
✓
D
To control vehicle ride height
✓
QUESTION 5 / 25
A school bus wanders and requires constant steering correction. Tech A says worn drag link or tie-rod ends can cause this. Tech B says excessive steering gear lash at center can also cause wander. Who is correct?
Choose one answer below.
A
Tech A only
✓
B
Tech B only
✓
C
Both Tech A and Tech B
✓
D
Neither Tech A nor Tech B
✓
QUESTION 6 / 25
When checking power steering fluid that is dark and smells burnt on a school bus, the technician should:
Choose one answer below.
A
Top off with any available fluid and release the bus
✓
B
Ignore it because color does not matter
✓
C
Add stop-leak additive
✓
D
Flush the system and inspect the pump and gear for internal wear
✓
QUESTION 7 / 25
A school bus pulls to one side only during braking but tracks straight otherwise. The steering-system component most worth inspecting along with the brakes is the:
Choose one answer below.
A
Worn or loose suspension/steering linkage that shifts under braking load
✓
B
Steering wheel clock spring
✓
C
Power steering reservoir cap
✓
D
Tilt steering column lock
✓
QUESTION 8 / 25
The correct method to check tie-rod end wear on a school bus is to:
Choose one answer below.
A
Pry between the frame and axle
✓
B
Grip the tie rod and apply hand force while watching/feeling for play in the stud and socket
✓
C
Measure power steering pressure
✓
D
Check ride height at the rear axle
✓
QUESTION 9 / 25
A school bus has noticeable steering free play before the front wheels respond. Tech A says a worn pitman arm or linkage joint can cause this. Tech B says a loose internal steering gear over-center adjustment can cause this. Who is correct?
Choose one answer below.
A
Tech A only
✓
B
Tech B only
✓
C
Both Tech A and Tech B
✓
D
Neither Tech A nor Tech B
✓
QUESTION 10 / 25
After replacing a school bus power steering pump, the technician must bleed air from the system. Failure to fully bleed the air will most likely cause:
Choose one answer below.
A
Higher fuel economy
✓
B
A change in caster angle
✓
C
Foaming fluid, noise, and erratic or reduced steering assist
✓
D
Brake fade
✓
QUESTION 11 / 25
A loud groaning noise from a school bus power steering pump that worsens at full steering lock most likely indicates:
Choose one answer below.
A
A worn idler arm
✓
B
Excessive positive camber
✓
C
A loose lug nut
✓
D
Low fluid level or restricted return causing pump cavitation
✓
QUESTION 12 / 25
On a school bus equipped with a hydraulic-assist linkage power steering system, the power cylinder (assist ram) is mounted to:
Choose one answer below.
A
The frame at one end and the steering linkage at the other
✓
B
Both ends of the drag link only
✓
C
The steering column
✓
D
The leaf-spring shackle
✓
QUESTION 13 / 25
A school bus steering wheel is off-center (not straight) while the bus drives straight ahead. The correct corrective action during alignment is to:
Choose one answer below.
A
Replace the steering gear
✓
B
Adjust tie-rod/drag link length to recenter the wheel while maintaining correct toe
✓
C
Add power steering fluid
✓
D
Reposition the steering wheel randomly on a fixed-spline shaft
✓
QUESTION 14 / 25
What component connects the pitman arm to the steering arm/knuckle on a typical school bus solid-axle steering system?
Choose one answer below.
A
Sway bar
✓
B
Track bar bushing
✓
C
Drag link
✓
D
Shock absorber
✓
QUESTION 15 / 25
During a power steering system pressure test on a school bus, the technician closes the load valve only momentarily. Holding it closed too long can:
Choose one answer below.
A
Improve assist permanently
✓
B
Set the toe angle
✓
C
Charge the air suspension
✓
D
Overheat fluid and damage the pump
✓
QUESTION 16 / 25
A school bus has a clunking noise from the front over bumps and steering feels loose. Tech A says worn kingpin bushings can cause both. Tech B says a worn drag-link or tie-rod ball stud can cause both. Who is correct?
Choose one answer below.
A
Tech A only
✓
B
Tech B only
✓
C
Both Tech A and Tech B
✓
D
Neither Tech A nor Tech B
✓
QUESTION 17 / 25
The steering column intermediate shaft uses universal joints. Excessive play in these U-joints will most likely cause:
Choose one answer below.
A
Steering lash and possible binding or notchy steering feel
✓
B
Loss of brake fluid
✓
C
Air suspension leak
✓
D
Increased tire pressure
✓
QUESTION 18 / 25
When inspecting a school bus integral steering gear, the input shaft should be checked for:
Choose one answer below.
A
Correct tire tread depth
✓
B
Smooth operation through full travel with no binding, roughness, or excessive lash
✓
C
Proper fuel pressure
✓
D
Battery state of charge
✓
QUESTION 19 / 25
A school bus power steering belt squeals during sharp turns at low speed. The most likely cause is:
Choose one answer below.
A
A bent tie rod
✓
B
Excessive caster
✓
C
A loose or glazed drive belt slipping under high pump load
✓
D
A worn wheel bearing
✓
QUESTION 20 / 25
The recommended way to verify a school bus drag-link socket is worn is to:
Choose one answer below.
A
Measure thrust angle
✓
B
Check brake chamber stroke
✓
C
Test alternator output
✓
D
Have a helper rock the steering while observing the socket for play and listening for noise
✓
QUESTION 21 / 25
A school bus exhibits steering shimmy (rapid side-to-side wheel oscillation) at certain speeds. Tech A says wheel/tire imbalance can cause it. Tech B says worn kingpins or loose linkage can cause it. Who is correct?
Choose one answer below.
A
Tech A only
✓
B
Tech B only
✓
C
Both Tech A and Tech B
✓
D
Neither Tech A nor Tech B
✓
QUESTION 22 / 25
After replacing a school bus pitman arm, the technician must:
Choose one answer below.
A
Index the arm on the sector shaft master spline and torque the nut to spec
✓
B
Bleed the brakes
✓
C
Recharge the A/C
✓
D
Adjust the clutch
✓
QUESTION 23 / 25
A school bus power steering system loses assist intermittently. A flow test shows pump output drops below specification at idle. The most likely cause is:
Choose one answer below.
A
Incorrect tire rotation
✓
B
A worn pump or sticking flow-control valve
✓
C
A loose seat belt
✓
D
A blown taillight fuse
✓
QUESTION 24 / 25
On a school bus with kingpin front axles, the kingpin radial clearance is best measured with:
Choose one answer below.
A
A tire tread depth gauge
✓
B
A coolant hydrometer
✓
C
A dial indicator while raising/loading the wheel to read knuckle-to-axle play
✓
D
A timing light
✓
QUESTION 25 / 25
A school bus steering gear has a sector (over-center) adjustment screw. Adjusting it too tight will most likely cause:
Choose one answer below.
A
Excessive on-center lash
✓
B
A power steering leak at the pump
✓
C
Increased ride height
✓
D
Steering binding or stiffness near center and accelerated wear
✓
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