Vehicle Maintenance Flashcards
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What are the various actions associated with vehicle maintenance?
Inspection
Lubrication
Adjustment
Cleaning
Testing
Replacing failed components
Define preventive maintenance.
The care and servicing for the purpose of maintaining equipment by providing inspection, detection and correction of failures before they occur. Scheduled maintenance.
Define demand or breakdown maintenance.
Maintenance on an unscheduled basis.
What impact does lack of maintenance have on the vehicles?
Life span of vehicle is reduced, Repair costs increased.
What impact does lack of maintenance have on the drivers?
Increased downtime due to lack of resources.
What impact does lack of maintenance have on the vehicle maintenance department?
Repair workload is increased so more personnel is required.
What impact does lack of maintenance have on budget forecasting?
Fleet manager unable to forecast maintenance budget.
What impact does a thorough maintenance program have on vehicle remarketing?
Lost value when PM records can’t be proven.
What are the two major components of a PM program?
Checklist of maintenance actions needing to be performed, The frequency these actions should be performed.
List six principal sources for determining maintenance actions.
- Manufacturer’s list of recommended maintenance actions
- Our personal experience
- The operating environment
- Records of unscheduled maintenance (individual and vehicle class records)
- Distinguish an unscheduled repair from an emergency repair.
What are two primary factors for determining service intervals?
Age, Idle or not.
When would fuel consumption be the preferred factor for determining PM interval?
Vehicles that have significant idle time but are not equipped with hour meters.
Why would fuel consumption be important to PM scheduling?
Fuel transactions require odometer reporting to be uploaded to FIMS. Will trigger PM alerts.
How does a good PM program impact warranty recovery?
Warranty claims may be denied with PM schedule isn’t followed.
What is the objective of predictive maintenance?
Maximize vehicle availability and minimize total maintenance cost.
What financial impact does maintaining to severe service levels vs. normal levels have?
Severe levels cost more.
What regulatory agency requires an annual inspection for commercial vehicles?
Federal Motor Carrier Regulations (FMCSR).
Identify three benefits of properly maintained tires.
Improve fuel economy
Extend tire life
Provide better handling.
What tire condition increases rolling resistance, reduces tread life, and increases fuel consumption?
Underinflation.
What tire condition results in reduced grip on the road, harsh ride, handling issues and increased wear on the tires?
Overinflation.
Where on a vehicle is the tire information label usually located?
Edge of driver’s door, glove box or fuel door.
Where are the tread wear indicators located?
Tires with treads worn down to the same level as the tread wear indicator.
How is the aspect ratio of the tire defined?
The ratio of the height of the sidewall to the width. Expressed as a percentage.
Identify 3 engine oil functions.
Reduce friction in bearings, gears and valve train
Protect against corrosion in engine parts
Suspend contaminants.
Who defines engine oil viscosity ratings?
Society of Automotive Engineers
SAE J300 Engine Oil Viscosity Classification System.
What grade of oil should be used in a vehicle?
SAE 20-60 defines the oil thickness at high temperatures. Higher the number, the thicker the oil.
How often are engine tune-ups typically required?
Every 100,000 miles.
How often should cooling systems be serviced?
Annually.
Identify three benefits related to anti-lock braking systems.
ABS allows your vehicle to stop in a straight line giving you more control
Most vehicles now have ABS in their standard equipment
Doesn’t need any PM service.
Define the ‘Warranty’ as it applies to vehicle manufacturers.
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.
How does performing warranty work in-house save money?
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.
