MSSC-MAINTENANCE QUESTIONS
WITH CORRECT ANSWERS 2025/2026
Save
How do you determine the grade of a bolt? - correct answersYou want to see radial slashes on the
head of the bolt. Grade 7 you see 5 radial slashes. Look at the head of the bolt; Count the number of
Radial slashes and add 2 to determine the grade of the bolt.
TPM - correct answersTotal Productive Maintenance
Goal of TPM - correct answersZero Breakdowns
Why do you want a clean environment when lubricating a bearing? - correct answersYou want to
make sure no dirt gets in the bearing. Dirt in the bearing can cause pitting of the balls; increase
friction which can cause extra heat and cause bearings to "freeze up" or stop rolling.
Why is keeping records of daily maintenance important? - correct answersIf there is an issue, the
records can be analyzed for any recurring events.
What is considered a planned maintenance activity? - correct answersMachine lubrication
When you are performing PM (Preventative Maintenance) on a piece of equipment, what should you
have done before the Lockout tag out procedure? - correct answersMake sure you have all of the
supplies and equipment that you need set out and ready to be used.
PM is the abbreviation for - correct answersPreventative Maintenance
You are performing PM on a piece of equipment. You need to use a circuit tester to check for what
type of electricity? - correct answersAC or DC
You have been working on a piece of equipment all day and your shift is ending. What do you need
to do to make sure no one uses the machine? - correct answersVerify the energy stat and then
change locks with the second shift maintenance technician.
You are ready to close out a PM order. What do you need to verify? - correct answersThat the
Preventative Maintenance (PM) was completed.
You have finished performing a PM on a drill press and notice that the the base has a slight crack in
it. You need to order a new base and replace it. This follow up work is categorized as what type of
maintenance? - correct answersCorrective Maintenance
What is Corrective Maintenance? - correct answersCorrective maintenance is implemented right
after a defect has been detected on a piece of equipment or a production line: its objective is to
make the piece of equipment work normally again, so that it can perform its assigned function.
Corrective maintenance can either be planned or unplanned depending on whether or not a
maintenance plan has been created.
What is Predictive Maintenance? - correct answersPredictive maintenance (PdM) is maintenance
that monitors the performance and condition of equipment during normal operation to reduce the
likelihood of failures. Also known as condition-based maintenance, predictive maintenance has been
utilized in the industrial world since the 1990s.
, Reactive Maintenance - correct answersReactive maintenance, also often referred to breakdown
maintenance, means that equipment repairs are done after the equipment failure.
When installing a motor for a machine, why is it important to keep the shaft level? - correct
answersIt requires less shims when the machine is level.
With a belt and pulley system, if the belt is touching the bottom grove of one of the pulleys, what
does this indicate? - correct answersThe pulley needs to be replaced.
During PM what types of parts are replaced? - correct answersMechanical parts that tend wear out
quickly
A shaft is considered out of round when the dial indicator - correct answersshows any movement.
When working on a chain-drive system, a chain is replaced if it is __% greater than its original length.
- correct answers3%
When a maintenance manager is making a PM schedule, what is the most important factor to be
considered? - correct answersFrequency of maintenance that is needed
All documentation for preventative maintenance would be part of - correct answersa Proper
Document Control Policy.
A Proper Document Control Policy is kept - correct answersin a designated safe and secure location.
If your company has a large amount of uncompleted PM work order, what is likely to be affected? -
correct answersThe mission statement
What is the most critical part of a closing a PM work order? - correct answersA completion date.
You need information on how to safely handle a lubricant, where do you find this information? -
correct answersSDS Sheet
Why would you check the Maintenance History for a machine? - correct answersTo see if problems
you are having with the machine have occurred before.
PDCA is the abbreviation for: - correct answersPlan, Do, Check, Act
Vibration can be caused by - correct answersMisaligned Couplings
Make sure to check a tool for sharpness and resharpen it when: - correct answersA part you are
making shows an unacceptable surface finish.
When completing an oil analysis on a piece of equipment, check: - correct answersThe SDS Sheet to
understand safety precautions and check the viscosity of the oil.
When aligning a motor the first step in the process is - correct answersChecking the shaft runout.
If a machine is set to perform 100 parts per minute per the manufactures's specifications and it is
producing 75 parts per minute. How many parts should it product after completing the maintenance
procedures? - correct answers100 parts per minute. After maintenance a machine should be
producing what the manufacturer says the specifications are.
What is used to check the level of fluid? - correct answersA sight glass.
Identifying machine component failures prior to a major breakdown is what type of maintenance? -
correct answersPredictive Maintenance
WITH CORRECT ANSWERS 2025/2026
Save
How do you determine the grade of a bolt? - correct answersYou want to see radial slashes on the
head of the bolt. Grade 7 you see 5 radial slashes. Look at the head of the bolt; Count the number of
Radial slashes and add 2 to determine the grade of the bolt.
TPM - correct answersTotal Productive Maintenance
Goal of TPM - correct answersZero Breakdowns
Why do you want a clean environment when lubricating a bearing? - correct answersYou want to
make sure no dirt gets in the bearing. Dirt in the bearing can cause pitting of the balls; increase
friction which can cause extra heat and cause bearings to "freeze up" or stop rolling.
Why is keeping records of daily maintenance important? - correct answersIf there is an issue, the
records can be analyzed for any recurring events.
What is considered a planned maintenance activity? - correct answersMachine lubrication
When you are performing PM (Preventative Maintenance) on a piece of equipment, what should you
have done before the Lockout tag out procedure? - correct answersMake sure you have all of the
supplies and equipment that you need set out and ready to be used.
PM is the abbreviation for - correct answersPreventative Maintenance
You are performing PM on a piece of equipment. You need to use a circuit tester to check for what
type of electricity? - correct answersAC or DC
You have been working on a piece of equipment all day and your shift is ending. What do you need
to do to make sure no one uses the machine? - correct answersVerify the energy stat and then
change locks with the second shift maintenance technician.
You are ready to close out a PM order. What do you need to verify? - correct answersThat the
Preventative Maintenance (PM) was completed.
You have finished performing a PM on a drill press and notice that the the base has a slight crack in
it. You need to order a new base and replace it. This follow up work is categorized as what type of
maintenance? - correct answersCorrective Maintenance
What is Corrective Maintenance? - correct answersCorrective maintenance is implemented right
after a defect has been detected on a piece of equipment or a production line: its objective is to
make the piece of equipment work normally again, so that it can perform its assigned function.
Corrective maintenance can either be planned or unplanned depending on whether or not a
maintenance plan has been created.
What is Predictive Maintenance? - correct answersPredictive maintenance (PdM) is maintenance
that monitors the performance and condition of equipment during normal operation to reduce the
likelihood of failures. Also known as condition-based maintenance, predictive maintenance has been
utilized in the industrial world since the 1990s.
, Reactive Maintenance - correct answersReactive maintenance, also often referred to breakdown
maintenance, means that equipment repairs are done after the equipment failure.
When installing a motor for a machine, why is it important to keep the shaft level? - correct
answersIt requires less shims when the machine is level.
With a belt and pulley system, if the belt is touching the bottom grove of one of the pulleys, what
does this indicate? - correct answersThe pulley needs to be replaced.
During PM what types of parts are replaced? - correct answersMechanical parts that tend wear out
quickly
A shaft is considered out of round when the dial indicator - correct answersshows any movement.
When working on a chain-drive system, a chain is replaced if it is __% greater than its original length.
- correct answers3%
When a maintenance manager is making a PM schedule, what is the most important factor to be
considered? - correct answersFrequency of maintenance that is needed
All documentation for preventative maintenance would be part of - correct answersa Proper
Document Control Policy.
A Proper Document Control Policy is kept - correct answersin a designated safe and secure location.
If your company has a large amount of uncompleted PM work order, what is likely to be affected? -
correct answersThe mission statement
What is the most critical part of a closing a PM work order? - correct answersA completion date.
You need information on how to safely handle a lubricant, where do you find this information? -
correct answersSDS Sheet
Why would you check the Maintenance History for a machine? - correct answersTo see if problems
you are having with the machine have occurred before.
PDCA is the abbreviation for: - correct answersPlan, Do, Check, Act
Vibration can be caused by - correct answersMisaligned Couplings
Make sure to check a tool for sharpness and resharpen it when: - correct answersA part you are
making shows an unacceptable surface finish.
When completing an oil analysis on a piece of equipment, check: - correct answersThe SDS Sheet to
understand safety precautions and check the viscosity of the oil.
When aligning a motor the first step in the process is - correct answersChecking the shaft runout.
If a machine is set to perform 100 parts per minute per the manufactures's specifications and it is
producing 75 parts per minute. How many parts should it product after completing the maintenance
procedures? - correct answers100 parts per minute. After maintenance a machine should be
producing what the manufacturer says the specifications are.
What is used to check the level of fluid? - correct answersA sight glass.
Identifying machine component failures prior to a major breakdown is what type of maintenance? -
correct answersPredictive Maintenance
