Wrench Time in Maintenance: Why Technicians Lose Productive Hours

Wrench time is the portion of a technician’s day spent doing actual hands-on maintenance work.

It does not include waiting for parts, walking to stores, searching for tools, clarifying job scope, getting permits, looking for equipment, waiting for shutdown approval, or updating records after the job.

Low wrench time does not always mean technicians are lazy. In most plants, it means the system around them is wasting their time.

What reduces wrench time

Technicians lose productive hours when work is not ready.

Common causes include:

• Work orders are unclear
• Asset location is missing
• Job priority keeps changing
• Spare parts are unavailable
• Tools are not ready
• Permits are delayed
• Production access is not coordinated
• Maintenance procedures are missing
• Supervisors assign work verbally
• Technicians must chase approvals
• Job history is difficult to find
• Completion updates are written later from memory

These losses are easy to ignore because they happen in small pieces throughout the day.

Wrench time is a planning problem

Improving wrench time starts before the technician reaches the asset.

A good work order should answer:

• What work must be done?
• Which asset or location is affected?
• What is the priority?
• Who owns the job?
• What parts may be required?
• What tools or permits are needed?
• Is there a checklist or procedure?
• Is production ready to release the equipment?

When this information is missing, technicians are forced to become planners, coordinators, stores runners, and detectives.

A practical work order management software process reduces this confusion by making job details visible before work starts.

Spare part delays are a major hidden loss

A technician may reach the machine and then discover that the required part is not available.

This creates multiple losses:

• The work order is delayed
• Production waits longer
• The technician moves to another job
• The machine may remain unsafe or unreliable
• The same issue comes back into the backlog

Connecting work orders with spare parts inventory management software helps supervisors see whether parts are planned, available, reserved, or consumed.

This does not make every job perfect, but it reduces avoidable waiting.

Procedures and checklists improve execution speed

Technicians work faster when the standard is clear.

Maintenance procedures help with:

• Safety steps
• Inspection points
• Lubrication tasks
• Measurement values
• Torque or setting requirements
• Cleaning and adjustment steps
• Acceptance criteria
• Photos or readings required at completion

Good procedures reduce repeated clarification and prevent missed steps.

They are especially useful for recurring PMs, inspections, calibration routines, and jobs performed by newer technicians.

Mobile updates reduce after-work admin

Many technicians complete the work first and update the system later. That creates poor records and forgotten details.

A mobile maintenance software workflow allows technicians to update status, add remarks, upload photos, record readings, and close work from the floor.

This improves wrench time because documentation becomes part of the job, not a separate end-of-day burden.

Do not measure wrench time without fixing blockers

Tracking wrench time without removing blockers can damage morale.

Maintenance leaders should use wrench time to find system problems, not blame technicians.

Useful questions include:

• Which jobs waited for parts?
• Which jobs waited for access?
• Which jobs had unclear instructions?
• Which technicians are overloaded?
• Which assets create repeated callouts?
• Which approvals delay work?

These questions help managers improve planning and supervision.

Bottom line

Wrench time improves when the maintenance system respects technician time.

Clear work orders, planned parts, accessible procedures, mobile updates, and better scheduling help technicians spend more time fixing problems and less time chasing information.

MaintBoard supports this by connecting work orders, assignments, checklists, spare usage, asset history, photos, readings, and technician updates in one maintenance workflow.