Vehicle Maintenance

Question 1

1.1.1 What are the various actions associated with vehicle maintenance. (p. 8)

Answer 1

inspection, lubrication, adjustment, cleaning, testing, and replacing components that have failed or are on the verge of failure

Question 2

1.1.2 Define preventive maintenance (p. 8)

Answer 2

1. The care and servicing by personnel for the purpose of maintaining equipment and facilities in satisfactory operating condition by providing for systematic inspection, detection, and correction of incipient failures either before they occur or before they develop into major defects.

Question 3

1.1.3 Define demand or breakdown maintenance. (p. 8)

Answer 3

Maintenance that is unscheduled

Question 4

1.1.4 Define motor vehicle maintenance, (p. 9)

Answer 4

inspection, lubrication, adjustment, cleaning, testing, and replacing components that have failed or are on the verge of failure

Question 5

1.1.5 What impact does lack of maintenance have on the vehicles? (p. 9)

Answer 5

If maintenance is not performed on a periodic basis, the life-span of the vehicles will be reduced, requiring their replacement or that of their more costly systems/ components at a date earlier than should be expected

Question 6

1.1.6 What impact does lack of maintenance have on the drivers? (p. 9)

Answer 6

Employees using the vehicles will be greatly inconvenienced, their productivity will drop, a work backlog will invariably develop and the vehicle maintenance personnel may be blamed

Question 7

1.1.7 What impact does lack of maintenance have on the vehicle maintenance department? (p. 9)

Answer 7

The workload of the maintenance department will be characterized by extreme peaks and valleys, requiring overtime or temporary help to reduce the peaks. During the valley periods, portions of the maintenance workforce will be idle.

Question 8

1.1.8 What impact does lack of maintenance have on budget forecasting? (p. 9)

Answer 8

Fleet managers will be unable to forecast maintenance budget, not only from a personnel aspect, but from an outlay of cash of parts and supplies

Question 9

1.1.9 What impact does a thorough maintenance program have on vehicle remarketing?

Answer 9

When the time comes to replace vehicles, those with accurate, proven PM records may sell for more than those without

Question 10

1.2.1 What are the two major components of a PM program?(p. 10)

Answer 10

1. checklist of maintenance actions that need to be performed periodically 2. interval or frequency with which these actions are performed

Question 11

1.2.2 List six principal sources for determining maintenance actions. (p. 13)

Answer 11

1. Manufacturer’s list of recommended maintenance actions. - Found in vehicle operator’s manual or in the service manual.- the frequency with which they should be performed are given for “normal” service.
2. Our past experiences comprise the second source for developing our checklist,
3. The operating environment of our vehicles is also essential.
4. Records of unscheduled maintenance should be examined.
   a. Individual Vehicle Records b. Vehicle Class Records
5. There must also be a way to distinguish an unscheduled repair from an emergency repair.

6 Even a fleet comprised mostly of light duty vehicles may have a significant number of vehicles where mileage standards are not reflective of use.
For instance,
police vehicles, taxis, facility maintenance vehicles and shuttle buses are examples of light duty vehicles that do not have original equipment manufacturer’s hour meters but accumulate a high number of idle hours.

Question 12

1.2.3 What are two primary factors for determining service intervals? (p. 12)

Answer 12

Mileage and Idle or not

Question 13

1.2.4 When would fuel consumption be the preferred factor for determining PM interval? (p. 14)

Answer 13

vehicles that incur significant or regular idle time, but are not equipped with hour meters (most light duty vehicles)

Question 14

1.2.5 Why would fuel consumption be important to PM scheduling? (p.14)

Answer 14

fuel transactions for all fleet vehicles are metered by the dispenser and should be uploaded to fleet man- agement software that tracks cumulative fuel consumption. The software can trigger scheduling a PM at a preset number of gallons or liters consumed

Question 15

1.2.6 How does a good PM program impact warranty recovery? (p. 12)

Answer 15

1. it is important to establish a service pattern that meets all of the manufacturers’ requirements to protect the vehicle’s warranty and incorporate checks for potential problem areas in the fleet. 2. Failure to follow manufacturer guidelines may result in loss of warranty and/or loss of goodwill warranty policy adjustments beyond standard warranty parameters

Question 16

1.2.7 What is the objective of predictive maintenance? (p. 15)

Answer 16

Maximize vehicle availability and minimize total fleet maintenance cost

Question 17

1.2.8 What financial impact does maintaining to severe service levels vs. normal levels have p 14

Answer 17

Severe Levels cost more

Question 18

1.2.9 What regulatory agency requires an annual inspection for commercial vehicles?

Answer 18

Federal Motor Carrier Regulations (FMCSR)

Question 19

1.3.1 Identify three benefits of properly maintained tires. (p. 77)

Answer 19

• Improve fuel economy;
• Extend tire life;
• Provide better vehicle handling;
• Help to prevent avoidable breakdowns and collisions; and
• Reduce exhaust emissions that contribute to environmental, health and climate change problems.

Question 20

1.3.2 What tire condition increases rolling resistance, reduces tread life, and increases fuel consumption? (p. 78)

Answer 20

Underinflation

Question 21

1.3.3 What tire condition results in reduced grip on the road, harsh ride, handling issues and increased wear on the tires? (p. 79)

Answer 21

Overinflation

Question 22

1.3.4 Where on a vehicle is the tire information label usually located? (p. 80)

Answer 22

tire information label, which is usually attached to the edge of the driver’s door, the door post, the glove box or the fuel door

Question 23

1.3.5 Where are the tread wear indicators located? (p. 81)

Answer 23

Tires with treads worn down to the same level as the tread wear indicator (1.5 mm or 2/32 of an inch in depth)

Question 24

1.3.6 How is the aspect ratio of the tire defined? (p. 86)

Answer 24

Ratio of the height of the sidewall to the width , expressed as a percentage

Question 25

1.3.7 Identify four engine oil functions. (p. 9)

Answer 25

• Reduce friction in bearings, gears, and valve train
• Protect against corrosion of all engine parts
  *Suspend contamainants such as sand, dirt, soot and metals
• cools by Transferring heat from engine parts * neutralize acids

Question 26

1.3.8 Who defines engine oil viscosity ratings? (p. 9)

Answer 26

Society of Automotive Engineers SAE J300 Engine Oil Viscosity Classification System

Question 27

1.3.9 What grade of oil should be used in a vehicle? (p. 9)

Answer 27

Lower the Temp, lower the number

Question 28

1.3.10 How often engine tune-ups are typically required? (p. 22)

Answer 28

100,000

Question 29

1.3.11 How often should cooling systems be service? (p. 16)

Answer 29

Anually

Question 30

1.3.12 Identify three benefits related to anti-lock braking systems. (p. 13)

Answer 30

• ABS was originally developed in the 1950’s to be used on airplanes.
• In the early 1980s ABS became popular on European sport and luxury cars.
• While the original costs were extremely high, the amounts of parts required have
been substantially reduced resulting in much lower cost.
• ABS allows your vehicle to stop in a straight line giving you more control of your
vehicle.
• Most modern vehicles have ABS either as standard equipment or available as an
option

Question 31

1.4.1 Define the “Warranty” as it applies to vehicle manufacturers. (p. 12)

Answer 31

expressed written guarantees by manufacturers and vendors that ensure that their products and/or services will be covered for a given time or mileage period

Question 32

1.4.2 How does performing warranty work in-house save money? (p. 12)

Answer 32

Warranty repairs that may not have been previously claimed (light bulbs, batteries, minor repair) may now be more convenient to submit warranty recovery claims which will further contribute to savings for the end user.