Before you can improve reliability, you need to know where your maintenance program is falling short. A maintenance gap is any disconnect between what your facility needs to keep assets operating reliably and what your current maintenance strategy actually delivers. Learning how to identify gaps in maintenance helps manufacturers reduce downtime, improve asset performance and avoid unnecessary maintenance costs.
Not every gap is mechanical. Some involve people, processes, data quality, planning, inventory, or work execution. Left unresolved, these issues increase the likelihood of equipment failure, inefficient maintenance activity, safety concerns, and costly repairs.
Manufacturers often discover maintenance gaps only after recurring breakdowns, incomplete preventive maintenance, or rising maintenance costs begin affecting production. Performing a structured gap analysis allows maintenance leaders to identify weaknesses before they become expensive problems.
Advanced Technology Services (ATS) helps manufacturers uncover these issues through maintenance assessments, reliability expertise, predictive technologies, skilled technician support, Maintenance, Repair, and Operations (MRO) services, and standardized work execution that improve long-term equipment maintenance performance.
Which maintenance options will work best for your organization depends on your facility’s equipment types, environment, workflows, and failure risk. Use the sections below to evaluate where gaps may exist and which areas deserve a deeper review.
Common signs of maintenance gaps
Maintenance gaps rarely appear overnight. Instead, they often develop gradually until they begin affecting production, reliability, or maintenance efficiency.
Warning sign | What it may indicate |
Recurring equipment failures | Preventive maintenance tasks may be ineffective, or root causes are not being addressed |
Missed preventive maintenance | Resource, scheduling or work execution gaps may exist |
Rising emergency work | Maintenance may be too reactive |
MRO stockouts | Spare parts planning may not align with asset criticality |
Poor work order details | Computerized Maintenance Management System (CMMS) data may not support decision-making |
Long repair times | Technician, parts or troubleshooting gaps may exist |
Quality defects tied to equipment | Asset condition may be affecting production consistency |
Why maintenance gaps are easy to miss
Maintenance gaps often remain hidden because production may continue running, at least temporarily.
Maintenance teams frequently prioritize keeping equipment operating over addressing the root cause of recurring issues. Temporary fixes become permanent workarounds. Operators learn to compensate for declining equipment performance without documenting the problem, while technicians repeatedly perform the same repairs.
A facility may also report excellent preventive maintenance compliance, while still experiencing repeated failures. Completing a maintenance schedule on time does not necessarily mean the maintenance tasks are preventing failure. Similarly, spare parts inventories may appear sufficient until a critical component fails, and replacement parts cannot be located quickly.
CMMS reports may show thousands of completed work orders yet provide little insight into whether maintenance planning is improving equipment reliability. Most importantly, equipment can continue operating while hidden risks continue to grow. Reliability, safety, and product quality may all decline before a machine finally stops.
Maintenance gaps are often most dangerous when they become normalized. If teams are constantly troubleshooting, expediting parts, adjusting equipment, or working around recurring problems, the maintenance program deserves a deeper review.
Main types of maintenance gaps
A complete gap analysis should evaluate multiple areas of the maintenance program rather than focusing only on equipment.
Gap type | What it means | Potential impact |
Preventive maintenance gaps | Preventive maintenance is missing, outdated or ineffective | More failures and unnecessary maintenance |
Predictive maintenance gaps | Critical assets are not monitored for condition | Fewer early warnings before failure |
Workforce gaps | Teams lack capacity or specialized skills | Longer repairs and reactive work |
MRO gaps | Parts are unavailable, duplicated or poorly managed | Extended downtime and emergency purchasing |
CMMS/data gaps | Asset and work order data is incomplete or inaccurate | Poor planning and weak decision-making |
Planning and scheduling gaps | Work is not prioritized or coordinated effectively | Missed preventive maintenance and production conflicts |
Safety gaps | Equipment-related risks are not addressed consistently | Incidents, near misses and compliance concerns |
Reliability gaps | Root causes are not identified or corrected | Repeat failures and rising costs |
Step 1: Review Maintenance Performance Data
The first step in learning how to identify gaps in maintenance is reviewing historical maintenance performance. Start with maintenance Key Performance Indicators (KPIs) and long-term trends rather than isolated events.
These trends often reveal weaknesses that individual work orders cannot.
Review key data sources such as:
- CMMS work orders
- Downtime logs
- Preventive maintenance compliance reports
- Emergency maintenance records
- Maintenance backlog
- Maintenance history
- Asset failure history
- Parts usage
- Safety reports
- Production quality data
Look for patterns:
- Assets experiencing repeated equipment failure
- Preventive maintenance completed but failures continuing
- Work orders lacking failure descriptions
- Increasing urgent maintenance activity
- Long repair durations
- Spare parts delays
- Deferred maintenance tasks
Step 2: Assess preventive maintenance effectiveness
A high preventive maintenance completion rate does not automatically mean the maintenance program is effective. Instead, evaluate whether preventive maintenance activities actually prevent failures.
Review whether maintenance tasks are:
- Completed on schedule
- Based on equipment criticality
- Aligned with OEM recommendations
- Updated following failures
- Clearly documented
- Practical for technicians to complete
Watch for preventive maintenance gaps such as:
- Missing inspections
- Outdated preventive maintenance procedures
- Excessive calendar-based maintenance
- Tasks that ignore known failure modes
- Inadequate lubrication instructions
- Missing verification after service
If an asset continues experiencing equipment failure despite consistent scheduled maintenance, compliance may not be the issue. The maintenance task itself may need to be redesigned around the asset’s actual failure modes, operating conditions and criticality.
Step 3: Identify predictive maintenance and monitoring gaps
Facilities that rely heavily on calendar-based maintenance may miss opportunities to use condition data on critical assets. For equipment with measurable failure indicators, predictive maintenance and condition-based maintenance can help teams act before a developing issue becomes a breakdown.
Evaluate whether critical assets would benefit from:
- Vibration analysis
- Wireless vibration monitoring
- Temperature monitoring
- Oil analysis
- Motor current monitoring
- Ultrasonic monitoring
- Pressure monitoring
- Machine health monitoring
Prioritize condition monitoring for assets with:
- High downtime costs
- Frequent failures
- Safety risks
- Significant quality impact
- Long repair times
- Long-lead replacement parts
- Measurable failure indicators
ATS combines machine health monitoring, analytics, and reliability expertise to help manufacturers detect developing equipment issues earlier, prioritize corrective action and move toward more proactive maintenance. Need help identifying where predictive maintenance could close reliability gaps? Talk to ATS about machine health monitoring and see what’s recommended for your facility.
Step 4: Evaluate MRO and spare parts gaps
Even skilled technicians cannot complete repairs efficiently without the right parts. MRO weaknesses frequently extend downtime despite accurate diagnostics. Strong MRO management supports faster equipment maintenance while reducing emergency purchasing and production interruptions.
Review your inventory for:
- Critical parts not stocked
- Obsolete inventory
- Duplicate inventory
- Incorrect inventory counts
- Long supplier lead times
- Emergency purchasing
- Parts not linked to assets
- Time spent searching for inventory
- Missing critical spare strategies
ATS supports manufacturers with AI-powered MRO asset management, storeroom optimization, repairable parts management, and improved inventory visibility to strengthen reliability and reduce downtime.
Step 5: Review workforce and skills gaps
Even an excellent maintenance strategy requires qualified people to execute it consistently.
Evaluate whether your maintenance team has sufficient expertise in:
- Current production equipment
- Automation systems
- Robotics
- Legacy assets
- Predictive maintenance
- Root cause analysis
- Maintenance planning
- Emergency response
Common workforce gaps include:
- Too few technicians
- Limited PLC expertise
- Lack of reliability engineering support
- Inadequate planning resources
- Inconsistent technician training
- Loss of experienced personnel
Operational symptoms often include:
- Longer repair times
- Larger maintenance backlog
- Deferred preventive maintenance
- Repeat failures
- Reactive contractor usage
- Knowledge concentrated in only a few employees
What works best often depends on balancing workforce capability with the complexity of your assets and operational demands.
Step 6: Audit CMMS and maintenance data quality
Good decisions require good data. Poor CMMS information makes it difficult to prioritize maintenance activity, optimize maintenance planning, or justify investments in equipment reliability.
Review whether your system provides:
- Current asset hierarchy
- Work orders linked to assets
- Consistent failure codes
- Updated PM procedures
- Accurate downtime records
- Parts usage tracking
- Labor hour reporting
- Searchable repeat failures
- Regular backlog reviews
Without reliable data, maintenance managers may struggle to distinguish between isolated events and recurring reliability problems. Regular CMMS data audits should be part of routine maintenance program reviews.
Step 7: Inspect work execution and planning gaps
Even a well-designed maintenance strategy can fail when execution lacks consistency. Review how maintenance work flows from planning through completion. Standardized workflows improve maintenance execution by ensuring every maintenance task follows consistent expectations.
Common work execution gaps include:
- Unclear ownership
- Weak prioritization
- Limited pre-planning
- Missing tools or parts
- Poor communication between shifts
- Weak production coordination
- Incomplete documentation
- Unclear escalation procedures
ATS supports structured maintenance execution through standardized processes, defined workflows, technical leadership, continuous improvement, and reliability-focused maintenance operating systems designed to support uptime and asset performance.
Eliminate gaps and create a stronger maintenance program
Maintenance gaps can exist across equipment, people, processes, inventory, planning, and data. Identifying them early helps manufacturers shift from reactive repairs to proactive maintenance that improves reliability while reducing maintenance costs and costly repairs.
The best place to start is by reviewing downtime trends, maintenance history, preventive maintenance effectiveness, predictive maintenance opportunities, MRO readiness, workforce capacity, CMMS quality, and work execution. Which options work best will often depend on your facility’s equipment types, environment, workflows, and failure risk.
ATS helps manufacturers move beyond identifying maintenance gaps to closing them. By combining reliability expertise, skilled technicians, predictive technologies, machine health monitoring, MRO support, and structured maintenance execution, ATS helps facilities reduce unplanned downtime, improve equipment maintenance performance, and build stronger maintenance practices that support long-term operational success.
Ready to strengthen your maintenance program? Talk to ATS about identifying the gaps that are holding your operation back. See what’s recommended for your facility.