Preventive Maintenance

Question 1

1. Breakdown maintenance is a system of maintaining a machine whereby components
   are replaced on a regularly scheduled service interval.
   a) true
   b) false

Answer 1

b) false; Breakdown maintenance refers to the policy of running a component or
machine until something breaks. At that time replacement occurs.

Question 2

2. Identify three (3) hidden costs that can occur if a system of breakdown maintenance
is followed.
a)
b)
c)

Answer 2

Any three (3) of the following are correct.

a) unexpected equipment downtime,
b) secondary component damage,
c) reduced equipment life, and
d) higher overall costs.
e) high operator and/or technician turnover

Question 3

3. Component failure and damage can be classed as primary and secondary. Explain
   what effect secondary damage may have on a machine.

Answer 3

Secondary damage could raise the cost of the primary component failure
considerably. Numerous sub-assemblies may be damaged because of the primary
failure. The extensive damage could increase the amount of time the machine is
down for repair.

Question 4

4. Preventive and predictive maintenance systems attempt to reduce the number of
   unexpected breakdowns. Identify five (5) purposes of a predictive maintenance
   system.

Answer 4

Any five (5) of the following are correct.
a) Maintain component reliability at a like-new standard.
b) Reduce the possibility of unexpected component failures.
c) Increase component operating service life while reducing operating costs.
d) Increase equipment safety and dependability.
e) Increase the value of a machine on trade-in or re-sale.
f) Meet the service requirements necessary to maintain a manufacturer’s parts
warranty or any extended warranty.

Question 5

5. A preventive or predictive maintenance system requires information about the
   machine. This can include such things as machine identification and the service work
   done on various components. The information could be recorded on a/an:
   a) computer managed maintenance system.
   b) parts department card system.
   c) service department card system.
   d) accounting department card system
   e) any of the above answers are correct.

Answer 5

e) any of the above answers are correct.

Question 6

6. Off-road machines are often shut down for maintenance after so many hours of
   operation.
   a) true
   b) false

Answer 6

true

Question 7

7. A system of predictive maintenance attempts to predict or anticipate when a
   component may fail. This prediction is based in part on a manufacturer’s suggested
   recommendations regarding component life span. Identify three (3) other information
   collection systems that can be used to help make better predictions about component
   life span and failure.
   a)
   b)
   c)

Answer 7

Any three (3) of the following are correct.
a oil analysis and oil filter contamination
b) vibration analysis
c) heat detection
d) component life history

Question 8

8. A predictive maintenance system where components are replaced at regularly
   scheduled service intervals has several advantages. Identify four ( 4) advantages of
   this type of predictive maintenance system.
   a)
   b)
   c)
   d)

Answer 8

Any four (4) of the following are correct.

a) increased productivity
b) reduced maintenance costs
c) reduced emergency and breakdown time
d) reduced secondary damage
e) aids in scheduled maintenance

Question 9

9. A regularly scheduled oil analysis program does not help you predict component
   problems, long before failure occurs.
   a) true
   b) false

Answer 9

b) false; An oil analysis program can definitely assist you in predicting
component failure. Regular monitoring, and careful interpretation of the
oil analysis results, helps to predict component failure far in advance of
the actual failure.

Question 10

10. A careful, conscientious, observant and alert service technician is required to make a
    success of any preventive maintenance program.
    a) true
    b) false

Answer 10

a) true