402b Steering Service

Question 1

When should you take extreme care when removing a steering wheel?

Answer 1

Be cautious when a vehicle has a collapsible steering column. Use extreme caution if the vehicle has an air bag restraint system installed.

Question 2

After installing the tie rod end, what final two (2) checks should be done?

Answer 2

• Ensure that the threaded end of the tie rod end extends into the tie rod tube past the groove.
• Ensure that the pinch bolt is properly torqued.

Question 3

When a steering column is equipped with numerous universal joints, the shafts and joints must be properly aligned with each other.
T/F

Answer 3

true

Question 4

A pitman arm must be timed to the worm shaft.

T/F

Answer 4

false; It must be timed to the sector shaft.

Question 5

After installing new kingpin bushings, you must ream the bushings out.
T/F

Answer 5

false; Not all bushings require reaming.

Question 6

When the vehicles wheel base is lengthened or shortened, it can cause increases in front tire wear.
T/F

Answer 6

true; This is due to the increase in tire skidding on turns.

Question 7

What can cause the pivot bolts in a tilt steering column to break?

a) vibrations in the air ride cab
b) drivers using the steering wheel as a grab handle
c) steering shafts that are out of alignment
d) road shock from the steering shaft

Answer 7

b) drivers using the steering wheel as a grab handle

Question 8

A vehicle-handling problem may be misinterpreted as a steering problem.
T/F

Answer 8

true

Question 9

The supply and return lines must be removed from the steering gear when draining the system.
T/F

Answer 9

true

Question 10

Steering system air bleeding is a procedure that allows air to remain in the system.
T/F

Answer 10

false

Question 11

To remove the sector shaft from the steering gear, the worm shaft and the ball nut assembly must be centred.
T/F

Answer 11

true

Question 12

Improper or reversed power steering hose connections can create an unusual steering response on a vehicle equipped with a single steering axle and a single steering gear. This will not be the case when multiple steering axles and multiple steering gears are used.
T/F

Answer 12

false; Improper or reversed power steering hoses can create unusual steering responses on any vehicle with any type of power steering system.

Question 13

The safe and accurate testing of the power steering hydraulic system requires:

a) the use of a pressure gauge that will handle the maximum expected pressure.
b) reference to appropriate service manuals and specifications.
c) the power steering system to be at the normal operating temperature.
d) that all of the above conditions be met.

Answer 13

d) that all of the above conditions be met.

Question 14

The hydraulic side of the power steering system can be checked with diagnostic equipment, in reference to the appropriate service manual, to determine system pressure and flow.
T/F

Answer 14

true

Question 15

During the testing process, the temperature of the power steering fluid should not
exceed ____________________.

Answer 15

121°C (250°F).

Question 16

Since the power steering reservoir is limited is size and the quantity of power steering fluid is small, the amount of time that the power steering system should be held in a fixed loaded position should be limited to 5 seconds or less. What else can be done to help keep the temperature of the power steering fluid at a reasonable level during the tests?

Answer 16

Allow the power steering system to operate with the engine at an idle rpm for a few moments between each test. This allows the power steering fluid to cool down.

Question 17

When the pitman arm or drag link is disconnected from the steering gear, the input shaft should not be turned more than a specified number of turns or partial turns. Explain what may happen if the input shaft was turned more than specified.

Answer 17

Excessive turning of the input shaft may cause the steering relief poppet valves to go out-of-adjustment. Manual adjustment would then be required. The clockspring may also be damaged.

Question 18

The steel balls that move between the rack piston and worm shaft in the steering gear are interchangeable. They can be replaced as individual items if only one or two in a set are damaged.
T/F

Answer 18

false; Steering gear steel balls should be changed as a matched set even if a few are damaged. Do not inter-mix used and new steel balls.

Question 19

As part of the steering relief poppet adjustment process, the adjustment of the steering stops must be confirmed.
T/F

Answer 19

true

Question 20

When replacing the rack and pinion steering gear, always replace the mounting bolts.
T/F

Answer 20

true

Question 21

When installing the integral power steering gear, you must have the drag link hooked up before you can set the steering stops.
T/F

Answer 21

false; The steering stops must be set before the drag link is hooked up or the tire may be turned too far resulting in the automatic poppets being misadjusted.

Question 22

To reduce the amount of back lash between the sector shaft and the rack piston, turn the adjusting screw out.
T/F

Answer 22

false; By turning the adjusting screw out, you are moving the sector shaft away from the rack piston. This will increase the back lash.

Question 23

What tool is required for properly adjusting the valve body bearing preload and the sector shaft?

a) foot pound torque wrench
b) inch pound torque wrench
c) feeler gauges
d) dial indicator

Answer 23

b) inch pound torque wrench

Question 24

No resetting will be required to the poppets if the wheel cut has not been changed.
T/F

Answer 24

true