Maintenance Management Flashcards
Questions
Answers
1.1.1 What are the various actions associated with vehicle maintenance. (p. 8)
- inspection
- lubrication
- adjustment
- cleaning
- testing
- replacing components that have failed or are on the verge of failure
1.1.2 Define preventive maintenance (p. 8)
- 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.
- Maintenance, including tests, measurements, adjustments, and parts replacement, performed specifically to prevent faults from occurring
1.1.3 Define demand or breakdown maintenance. (p. 8)
Maintenance that is unscheduled
1.1.4 Define motor vehicle maintenance, (p. 9)
On a scheduled, periodic basis, which is called preventive maintenance (PM),
or
On an unscheduled basis, which is referred to as demand, or breakdown maintenance
inspection, lubrication, adjustment, cleaning, testing, and replacing components that have failed or are on the verge of failure
1.1.5 What impact does lack of maintenance have on the vehicles? (p. 9)
- 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
1.1.6 What impact does lack of maintenance have on the drivers? (p. 9)
1 Employees using the vehicles will be greatly inconvenienced,
2 Their productivity will drop
3. A work backlog will invariably develop and the vehicle maintenance personnel may be blamed
1.1.7 What impact does lack of maintenance have on the vehicle maintenance department? (p. 9)
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.
1.1.8 What impact does lack of maintenance have on budget forecasting? (p. 9)
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
1.1.9 What impact does a thorough maintenance program have on vehicle remarketing?
Those with accurate, proven PM records may sell for more than those without
1.2.1 What are the two major components of a PM program?(p. 10)
- checklist of maintenance actions that need to be performed periodically
- interval or frequency with which these actions are performed
1.2.2 List six principal sources for determining maintenance actions. (p. 13)
- Manufacturer’s list of recommended maintenance actions.
- In operator’s manual or in the service manual.- the frequency with which they should be performed are given for “normal” service.
- Our past experiences comprise the second source for developing our checklist,
- We may very well wish to modify the manufacturer’s recommended actions by adding to the list, or changing it in some way. For example, vehicles used for inter state highway, long distance driving will require a different set of criticism than vehicles used only in local areas.
- The operating environment of our vehicles is also essential.
- If our equipment is to be operated in a very dusty climate, we may wish to remove and replace air filters and change oil more frequently.
- Records of unscheduled maintenance should be examined.
- Hopefully, we’ve been maintaining records to which we can refer that an tell us which operating systems have been giving us trouble so that these systems can be included in the checklist. Our records should consist of two parts:
a. Individual Vehicle Records
b. Vehicle Class Records
- Hopefully, we’ve been maintaining records to which we can refer that an tell us which operating systems have been giving us trouble so that these systems can be included in the checklist. Our records should consist of two parts:
- There must also be a way to distinguish an unscheduled repair from an emergency repair.
- One easy way is to make all emergency repair entries in red ink. This is important because the listing of emergency repairs to trouble-prone systems constitutes the fifth source of information for developing our checklist.
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.
1.2.3 What are two primary factors for determining service intervals? (p. 12)
Mileage and Idle or not
1.2.4 When would fuel consumption be the preferred factor for determining PM interval? (p. 14)
Vehicles that incur significant or regular idle time, but are not equipped with hour meters (most light duty vehicles)
1.2.5 Why would fuel consumption be important to PM scheduling? (p.14)
Fuel transactions for all fleet vehicles are metered by the dispenser and should be uploaded to fleet management software that tracks cumulative fuel consumption.
The software can trigger scheduling a PM at a preset number of gallons or liters consumed
1.2.6 How does a good PM program impact warranty recovery? (p. 12)
- 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.
- Failure to follow manufacturer guidelines may result in loss of warranty and/or loss of goodwill warranty policy adjustments beyond standard warranty parameters
1.2.7 What is the objective of predictive maintenance? (p. 15)
Maximize vehicle availability and minimize total fleet maintenance cost
1.2.8 What financial impact does maintaining to severe service levels vs. normal levels have p 14
Severe Levels cost more
1.2.9 What regulatory agency requires an annual inspection for commercial vehicles?
Federal Motor Carrier Regulations (FMCSR)
1.3.1 Identify three benefits of properly maintained tires. (p. 77)
• 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.
1.3.2 What tire condition increases rolling resistance, reduces tread life, and increases fuel consumption? (p. 78)
Underinflation
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)
Overinflation
1.3.4 Where on a vehicle is the tire information label usually located? (p. 80)
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
1.3.5 Where are the tread wear indicators located? (p. 81)
(1.5 mm or 2/32 of an inch in depth)
1.3.6 How is the aspect ratio of the tire defined? (p. 86)
Ratio of the height of the sidewall to the width , expressed as a percentage
1.3.7 Identify four engine oil functions. (p. 9)
- Reduce friction in bearings, gears, and valve train
- Protect against corrosion of all engine parts
- Suspend contaminants such as sand, dirt, soot and metals
- Cools by Transferring heat from engine parts * neutralize acids
1.3.8 Who defines engine oil viscosity ratings? (p. 9)
Society of Automotive Engineers SAE J300 Engine Oil Viscosity Classification System
1.3.9 What grade of oil should be used in a vehicle? (p. 9)
Lower the Temp, lower the number
5W-20 or 5W-30 oil for colder temperatures, with a 10W-30 oil as optional for higher ambient temperatures
1.3.10 How often engine tune-ups are typically required? (p. 22)
10-12K Miles for older
100,000 for new
1.3.11 How often should cooling systems be service? (p. 16)
Anually
1.3.12 Identify three benefits related to anti-lock braking systems. (p. 13)
• 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.
- Max Vehicle performance
- Increased vehicle control
1.4.1 Define the “Warranty” as it applies to vehicle manufacturers. (p. 12)
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
1.4.2 How does performing warranty work in-house save money? (p. 12)
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.
opportunity for savings may be gained by a reduction in vehicle transport costs
2.1.1 Understand downtime and how it effects operations. (p. 93)
When vehicles are needed but aren’t available – the definition of effective downtime – then there is no value being generated to offset the cost of the investment
2.1.2 Identify several strategies to use when service demands increase. (p. 93)
• Lower Service Levels
• Add Capacity with a New/Expanded Facility
• Added Staff & Shifts
• Out-source/Out-task Supplementation
2.1.3 How can Fleet Information Management Systems improve service and dependability? (p. 94)
Accurately coding work in the manner described in the example above allows the cost and down-time for various types of scheduled and unscheduled work to be tracked separately.
It also permits follow-up action and trend analysis over time to occur.
2.1.4 What is the difference between Preventive and Predictive Maintenance? (p. 94)
Preventive maintenance (PM) is defined as services and/or checks scheduled based on measurable intervals which are designed to keep vehicles and equipment functioning properly.
Predictive is used to plan ahead
2.2.1 When should the decision to perform a function in-house or out-source be made?
When determining how to structure your fleet
2.2.2 Identify the factors that might influence your decision to out-source a function. 101
Lowest cost
Highest quality
Speed
2.2.3 Identify how to measure technician productivity. (p. 103)
Establish- ing and refining these standards can be an arduous task but it is necessary. “Book times” for light- duty vehicles are readily available in various guidebooks and on-line guides accessible through subscription.
Job times for medium- and heavy-duty chassis are also increasingly available from these sources.
Job times for truck bodies, ancillary equipment, specialty vehicles, and off-road equipment are more difficult to determine. In many cases fleets can acquire times allowed for warranty repairs by the manufacturer and use those