AST 1 – Line H – Steering Systems

1. What adjustment is made last when performing a rebuild on a recirculating ball steering gear?

A. Mesh. B. Over centre. C. Sector shaft end play. D. Worm bearing preload.

2. Which component is part of a rack and pinion steering system?

A. Idler arm. B. Center link. C. Tie rod end. D. Pitman Arm.

3. Which component does the sector gear engage with on a steering box?

A. Ball nut. B. Idler arm. C. Pitman arm. D. Steering input shaft.

4. Which fault would cause a rack and pinion equipped vehicle to experience a condition known as bump steer?

A. Misaligned rack mounts. B. Incorrect mesh adjustment. C. Worn internal rack bushings. D. Lateral wear of the tie rod end.

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5. Refer to Figure H1 - 1. Which adjustment can be made using these identified parts?

Figure H1 - 1

A. Mesh. B. Pinion bearing preload. C. Worm bearing preload. D. Over centre.

6. What is the unique feature of an airbag electrical wiring harness?

A. The complete harness is one piece. B. The connectors are a specific colour. C. The connectors are all the same size. D. The harness wires are all the same diameter.

7. Which procedure is used to remove a clockspring?

A. Remove the steering wheel, remove the air bag module, disconnect the electrical connections, remove the clockspring. B. Remove the steering wheel, remove the air bag module, wait 30 minutes disconnect the electrical connections, remove the clockspring. C. Disconnect the negative battery cable, remove the airbag module, remove the steering wheel, disconnect the electrical connectors, remove the clockspring. D. Disconnect the negative battery cable, wait 30 minutes, remove the airbag module, remove the steering wheel, disconnect the electrical connectors, remove the clockspring.

2 8. Which gas is used to deploy an airbag?

A. Argon. B. Helium. C. Nitrogen. D. Carbon dioxide.

9. What is used on most seat belts equipped with pretensioners to remove the slack from the belt in the event of a collision?

A. A pyrotechnic device. B. An active pretensioner. C. An inertia lock retractor. D. A weight sensing device.

10. Which procedure is followed to safely diagnose an air bag fault?

A. Disconnect the negative battery cable before connecting the scan tool and retrieving the fault codes. B. Replace the airbag module with an air bag simulator, connect the scan tool and follow the diagnostic procedures. C. Replace the airbag module with an air bag simulator, place the airbag module on the work bench before applying power to it. D. Disconnect the negative battery cable, replace the airbag module with an air bag simulator, test airbag module on the work bench.

11. Refer to Figure H3 - 2. Which component of the steering column is being indicated by the arrow?

3 Figure H3 - 2

A. Flex coupling. B. Collapsible mesh. C. Mounting bracket. D. Tilt steering flex joint.

12. Why are most under-dash mounting groove inserts on a steering column made of plastic?

A. To allow it to break away during a collision. B. To insulate the ignition from any electrical conductivity. C. To absorb road vibrations transferred through the steering shaft. D. To reduce the amount of torque required to keep the bolts tight.

13. Which steering component is used to prevent vibration and noise from traveling into the steering wheel?

A. Flexible coupling. B. Mounting brackets. C. Steering shaft u-joint. D. Mounting groove inserts.

14.Refer to Figure H4 - 3.Which steering linkage component is indicated by the arrow?

Figure H4 - 3

4 A. Tie rod. B. Idler arm. C. Centre link. D. Pitman arm.

15. Which procedure is used to check a lower ball joint used on an SLA suspension system?

A. Raise the vehicle by the frame, push and pull on the tire, use a dial indicator to check for radial or axial movement. B. Support the vehicle weight under the front cross member, push the tire left and right, use a dial indicator to check for radial or axial movement. C. Support the vehicle weight under the lower control arm, use a pry bar between tire and the ground, use a dial indicator to check for radial or axial movement. D. Raise the vehicle and support under the tire, place a piece of wood between the upper control arm and the frame, push and pull on the tire, use a dial indicator to check for radial or axial movement.

16. What is the final tightening procedure for a slotted nut on a tie rod end?

A. Torque all tie rod nuts to 60 ft-lbs and install the cotter pin. B. Torque the nut to 60 ft-lbs, do not install the cotter pin if the hole and the slot do not line up. C. Tighten the nut to torque specifications then loosen the nut until the hole lines up with the slot then install the cotter pin. D. Tighten the nut to torque specifications and tighten further until the hole lines up with the slot then install the cotter pin.

17. Which ball joint style receives the force from the coil spring or torsion bar?

A. Preload. B. Follower. C. Self loading. D. Load carrying.

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18. When is power steering fluid at its highest pressure?

A. At high rpm. B. When driving straight. C. When in the full lock position. D. When driving around corners.

19. Refer to Figure H5 - 4. Which type of power steering pump is shown?

Figure H5 - 4

A. Gear. B. Vane. C. Slipper. D. Gerotor.

20. Which procedure is used to perform a maximum pressure test on a power steering pump?

A. With the vehicle idling, close and open the flow control valve 3 times, the pressures should be within 10p.s.i. B. With the vehicle idling, close the flow valve until 500p.s.i is reached, increase engine speed to 1500 rpm, pressures should be within 15p.s.i.

6 C. With the vehicle at 1500 rpm, fully open the flow valve, capture the fluid in a container and record the amount displaced in a 15 second period. D. Run the vehicle at 2000 rpm, close the flow control valve, record the pressure, open the valve, record the pressure, the pressures should be within 25p.s.i.

21. What is positive caster?

A. The same as the included angle. B. The rearward tilt of the steering axis. C. The angle between the wheel centreline and the true vertical. D. The inward tilt at the top of the wheel when viewed from the vehicle front.

22. What determines the thrust line of a vehicle?

A. Rear toe. B. Front toe. C. Rear camber. D. Front camber.

23. During an alignment, the thrust angle was measured at -3 1/2°. What is the problem?

A. The rear tires are pointed to the left. B. The front tires are pointed to the right. C. The rear camber is excessively positive. D. The right rear control arm bushings are worn out.

24. Refer to Figure H6 - 5. A vehicle equipped with SLA suspension is being aligned. SAI specification is 9°. What is the problem?

Figure H6 - 5

A. Left camber is out of adjustment. B. Right camber is out of adjustment. C. The left spindle requires replacement. D. The right control arm requires replacement.

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