Question 1

The most likely result of a power steering drive-belt   that is worn is:

Accepted Answer

A worn power steering drive-belt is most likely to slip, which can cause issues with steering and potentially damage the power steering pump. Belt contamination, wear on the power steering pump pulley, and belt breaking are also potential consequences of a worn belt, but slipping is the most common.

Question 2

Technician A says that when testing power steering pump pressure, the pressure gauge should be connected in the power steering return hose. Technician B says if the power steering pump pressure is less than specified, the pressure relief valve may be sticking. Who is correct?

Accepted Answer

The pressure gauge for testing power steering pump pressure should be connected to the pressure line, not the return hose, making Technician A's statement incorrect. Technician B is correct because if the power steering pump pressure is less than specified, it could indicate a problem with the pressure relief valve, such as it sticking.

Question 3

A loose power steering belt may cause all of these problems EXCEPT:

Accepted Answer

A loose power steering belt typically does not cause excessive wear on internal pump parts. It mainly affects steering effort, causes noise, and reduces pump pressure.

Question 4

When checking power steering belt tension by measuring the belt deflection, the maximum allowable belt deflection per foot of belt free span is:

Accepted Answer

The answer of When checking power steering belt tension by...

Question 5

When testing power steering pump pressure, the pressure gauge valve should be closed for no more than:

Accepted Answer

The pressure gauge valve should only be closed for a maximum of 5 seconds when testing power steering pump pressure. Leaving it closed for longer can cause damage to the system.

Question 6

On a power steering pump with a variable assist steering actuator, what component controls the actuator:

Accepted Answer

The PCM (Powertrain Control Module) controls the variable assist steering actuator by receiving input from various sensors and determining the appropriate output based on driving conditions.

Question 7

All of these statements about a serpentine belt are true EXCEPT:

Accepted Answer

Serpentine belts made of EPDM are actually less susceptible to cracking compared to belts made of other materials such as neoprene or rubber.

Question 8

A hydroboost power steering system:

Accepted Answer

A hydroboost power steering system uses pressure from the power steering pump to provide brake boost.

Question 9

Many micro-V-belts use what type of automatic tensioner?

Accepted Answer

The answer of Many micro-V-belts use what type of automatic...

Question 10

Where is the machined venturi located in the power steering pump?

Accepted Answer

The answer of Where is the machined venturi located in...

Question 11

A power steering pump has the specified pressure during a pressure test, but the steering effort measured with a spring scale is excessive. Technician A says to be sure the front tires have the specified tire pressure. Technician B says the power steering gear may be defective. Who is correct?

Accepted Answer

Both technicians are correct. Technician A suggests checking the tire pressure because incorrect tire pressure can affect steering effort. Technician B suggests that a defective power steering gear could also cause excessive steering effort. Both are valid points to consider when diagnosing steering issues.

Question 12

A multi-ribbed belt with an automatic belt tensioner experiences rapid wear. Technician A says the most likely cause is a misaligned belt pulley. Technician B says the most likely cause is excessive belt tension. Who is correct?

Accepted Answer

A misaligned belt pulley can cause rapid wear on a multi-ribbed belt as it causes the belt to run at an angle, putting extra strain on one side of the belt. Excessive belt tension, on the other hand, is less likely to cause rapid wear and more likely to cause other issues such as bearing damage or premature failure of the tensioner.

Question 13

Technician A says foaming in the power steering reservoir may indicate air in the power steering system. Technician B says a growling noise when the front wheels are turned may indicate air in the power steering system. Who is correct?

Accepted Answer

Foaming in the power steering reservoir is an indication of air in the system, which supports Technician A's statement. A growling noise while turning indicates that the power steering pump is struggling to pump fluid, and this could be due to air in the system. Therefore, both technicians are correct.

Question 14

All of these statements about integral-type power steering pump sealing are true EXCEPT:

Accepted Answer

Lip seals are not mounted on bolt fittings on the back of the reservoir. They are typically mounted on the pump shaft or in the pump housing to prevent oil leaks.

Question 15

A vehicle experiences repeated ruptures of the high-pressure power steering hose. The most likely cause of this problem is:

Accepted Answer

A pressure relief ball sticking closed can cause excessive pressure build-up in the power steering system, leading to repeated ruptures of the high-pressure power steering hose.

Question 16

Technician A says the same tool kit is used to remove and install a press-on-type power steering pump pulley. Technician B says power steering pump pulleys retained with a nut and lock washer have a woodruff key mounted in matching slots in the pulley and shaft. Who is correct?

Accepted Answer

Technician A is correct because a specific tool kit is indeed used for both removing and installing press-on-type power steering pump pulleys. Technician B is also correct because power steering pump pulleys that are retained with a nut and lock washer often use a woodruff key for alignment and to secure the pulley to the shaft, fitting into matching slots on both components.

Question 17

During normal power steering pump operation:

Accepted Answer

Pump flow increases as the engine speed increases.

Question 18

All of these statements about power steering pump design and operation are true EXCEPT:

Accepted Answer

Fluid pressure from the pump vanes actually moves the flow control valve toward the open position.

Question 19

Technician A says erratic power steering pump pressure may be caused by a sticking flow control valve. Technician B says small metal burrs may be removed from the flow control valve with crocus cloth. Who is correct?

Accepted Answer

Erratic power steering pump pressure can be caused by a sticking flow control valve, which is correct by Technician A. Technician B is also correct as small metal burrs may cause the valve sticking and can be removed with crocus cloth. Therefore, both technicians are correct.

Question 20

All of the following statements about multi-ribbed belts made of EPDM are true EXCEPT:

Accepted Answer

There is no specific mileage range for EPDM belts, as their lifespan can vary depending on factors such as usage and maintenance.

Quiz 12: Power Steering Pumps

The most likely result of a power steering drive-belt that is worn is: