Preventive Maintenance for General Contracting

Start from the equipment master list and group similar units together by type and size (for example, skid steers, forklifts, boom lifts, generators). This grouping allows you to apply similar maintenance intervals and tasks to multiple assets.

For each equipment type, pull the operator’s manual or manufacturer maintenance guide and note recommended service intervals based on hours or calendar time, along with critical tasks like oil changes, filter replacements, and inspections.

Check for any additional maintenance requirements based on regulations (for example, lifting equipment inspections) or specific client or site rules. Note these and attach them to the relevant equipment groups.

Convert manufacturer and regulatory guidance into a simple set of PM intervals for each type (for example, daily checks, 250-hour service, annual inspection). Use hours-based intervals where possible and calendar-based intervals when hours tracking is limited.

Apply the standard intervals to each individual unit in your system, making sure each asset record shows which services it requires and how often. Include both hour-based and calendar-based triggers if both matter.

Input all PM intervals and next-due dates into your maintenance software or spreadsheet. Make sure each entry includes asset ID, type of service, and trigger (hours or date) so reminders can be generated later.

Decide how often hours will be captured for each equipment category (for example, weekly for heavy-use units, bi-weekly or monthly for light-use units). Write this frequency into your PM procedures so everyone knows the expectation.

Identify who will take readings for each location: yard staff for stored equipment and site supervisors or foremen for equipment on jobsites. Communicate expectations clearly so people understand this is part of their routine.

Build a simple form or digital template that captures date, asset ID, location, and current hours (or other usage measure). Keep the form easy to complete so it does not slow down field crews.

Show staff where the meter is on each main equipment type and how to read it accurately. Clarify what to do if the meter display is damaged, unreadable, or different from previous readings (for example, report it to maintenance).

Ensure assigned staff submit readings on time via the chosen method (paper collected by the office, photo of the meter, or direct entry into the system). Follow up quickly if submissions are late or missing.

Update your maintenance system or spreadsheet with the latest hours for each asset. Check for obvious errors (such as hours decreasing) and correct them before saving so PM triggers are based on accurate data.

In your maintenance system or tracker, run a report showing all PM services due or coming due within your planning window (for example, the next 2–4 weeks). Include asset ID, location, required service, and trigger (hours or date).

Organize the list by project or yard and equipment type so you can see which services can be done in one visit or by the same mechanic. Grouping reduces travel time and setup effort.

Assign a priority to each work order based on safety risk, criticality to project production, and how overdue it is. For example, a crane close to an annual inspection date should rank higher than a lightly used generator slightly over an oil-change interval.

For each due service, create a work order that includes asset ID, location, description of service, standard checklist items, estimated time, and any required parts. Make sure mechanics can understand the work order without needing extra explanation.

Place each work order on a maintenance calendar, taking into account mechanic availability and project schedules. Aim to schedule PM during natural lulls in equipment usage when possible to reduce disruption.

Provide mechanics with their assigned work orders, either printed or in a digital system, along with the schedule and any special site access instructions. Confirm they understand which jobs are highest priority.

For each major equipment type, create a clear checklist of daily and pre-use checks (for example, fluids, leaks, tires/tracks, controls, safety devices). Use simple language and keep it to one page where possible.

Show operators how to walk around their machine, what to look for on each item on the checklist, and how to complete the form or digital entry. Emphasize that inspections must be done before operating, not after.

Define when inspections must be done (for example, at the start of each shift) and where completed forms should be stored or submitted. For digital systems, show operators how to submit from their phone or tablet.

Establish a simple rule for operators: minor issues are noted on the checklist; serious issues (such as leaks, damaged tires, or faulty brakes) must be reported immediately to the supervisor and maintenance. Make sure they know who to call.

Supervisors or the equipment coordinator should occasionally review that inspections are being completed, not just signed. Walk the yard or site to validate that machines match what checklists report.

Review inspection records periodically to see if the same issues keep appearing. If so, adjust PM checklists or intervals to proactively address those recurring problems.

Before starting, the mechanic should read the work order fully and gather the required tools, filters, lubricants, and other parts. This preparation reduces wasted trips back to the shop or parts room.

On arrival at the equipment, confirm that it is parked on stable ground, turned off, and secured. Apply lockout/tagout or similar safety controls according to company policy so no one accidentally starts the machine during service.

Work through the PM checklist in order, performing each inspection, adjustment, and replacement as specified. Check off each item as it is completed and note any abnormalities or additional work needed.

Change oils, filters, belts, and other wear items according to the service interval. Use the correct parts and fluids as specified by the manufacturer or company standards.

Once PM is complete, start the equipment and run it through basic functions in a safe area. Listen for unusual noises and watch for warning lights or leaks to confirm the service was successful.

Remove used parts, trash, and tools from the work area. Dispose of oils, filters, and other waste materials according to environmental and company rules. Return the machine to a clean, safe state.

For each equipment type, list the part numbers and descriptions of common PM items such as engine oil filters, fuel filters, hydraulic filters, belts, and lubricants. Include quantities typically needed per service.

For each standard part, define a minimum on-hand quantity and a reorder level based on how often services occur and how long it takes to restock. Keep these numbers conservative enough to cover normal variations in usage.

Arrange shelves or bins so that PM parts are grouped by equipment type and labeled with part numbers, descriptions, and which models they fit. Clear organization helps mechanics find what they need quickly.

Require mechanics to record which parts they used on each work order. Deduct these quantities from inventory in your tracking system or manually on a parts log.

On a set schedule (for example, monthly), count key PM parts and compare to your records. Adjust quantities as needed and investigate large discrepancies.

When counts drop to or below reorder levels, issue purchase requests or orders for replacement stock. Coordinate with purchasing to avoid long lead times on parts critical to high-use equipment.

On a regular basis (for example, weekly or bi-weekly), send each superintendent or project manager a list of PM services due soon on equipment assigned to their job. Include asset IDs, equipment type, and target dates.

Ask each project when the equipment can be spared for a few hours (for example, during material deliveries, weather delays, or non-critical phases). Document these preferred windows in your planning.

Where timing is flexible, move PM work orders into windows that the project prefers, as long as you do not delay maintenance beyond safe or reasonable limits. For critical safety inspections, keep firm deadlines.

Coordinate with the project team to decide whether mechanics will go to the site or equipment will be brought to a yard or staging area. Make sure roles and timing are clear so no one is waiting on the other.

Once a schedule is agreed, send a simple confirmation message with date, time, and expected duration of the PM. Ask the superintendent to ensure the machine is available and clean enough to work on.

If weather, schedule changes, or emergencies make the plan unworkable, re-coordinate with the project as soon as possible. Do not let “we will get to it later” become a default; set a new firm plan.

After completing a PM, the mechanic should record which checklist items were done, parts replaced, fluids added, and any adjustments made. They should also note any issues found that require follow-up.

Have the mechanic write down the current hour meter reading during the service. This helps you verify that intervals are correct and gives context if failures occur later.

Input the recorded work, meter reading, and date into your maintenance software or spreadsheet. Attach digital copies of completed checklists if your system allows it.

If the mechanic noticed issues that could not be fixed during the PM, create separate corrective work orders or notes so those items are not forgotten. Link them to the same asset for easy tracking.

Change the work order status from “Open” to “Closed” once all data is entered and any immediate follow-ups are created. This signals that the PM is complete and the machine is back in normal service.

Based on the service performed, update the next-due PM trigger in your system (for example, hours + interval or date + interval), so future reminders are accurate.

Decide which metrics matter most, such as percentage of PMs completed on time, number of overdue PMs, hours of unplanned downtime per asset, and ratio of preventive to corrective maintenance hours.

In your maintenance system, set up reports that calculate these metrics automatically if possible. If you use spreadsheets, design a simple dashboard that pulls from work order and downtime logs.

Ensure that whenever equipment is down for unplanned repairs, the downtime is logged with start and end times, cause, and whether a missed PM contributed. Consistent logging is critical for accurate analysis.

On a set schedule (for example, monthly), run compliance and downtime reports and review them for patterns (for example, certain units or sites with more missed PMs).

Present key findings to project managers, superintendents, and mechanics. Highlight wins (fewer breakdowns after better PM) and areas where PM is being skipped or delayed.

If some intervals seem too frequent or not frequent enough, or if certain sites struggle to make time for PM, adjust intervals, scheduling approaches, or training. Document any changes and monitor the impact over time.

Gather PM compliance metrics, downtime statistics, and notes from mechanics and superintendents about recurring issues. Ask what is working well and what feels excessive or unhelpful.

Look for assets or equipment types that experienced repeated breakdowns despite PM. These are candidates for deeper investigation or more intensive maintenance.

Compare current checklists and intervals to manufacturer recommendations, real-world performance, and mechanic feedback. Identify items that can be added, removed, or adjusted in frequency.

Write down concrete changes, such as “increase hydraulic filter change interval for skid steers from 250 to 200 hours” or “add undercarriage inspection step for excavators working in rock.” Prioritize changes with the biggest safety and reliability impact.

Meet with key leaders to walk through the proposed adjustments. Discuss trade-offs between maintenance time and uptime. Agree on which changes to implement for the coming year.

Revise your PM schedules, checklists, and procedures to reflect approved changes. Train mechanics and inform project teams about any changes that will affect equipment availability or service timing.