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    John Deere excavator working at a job site

    Heavy Equipment Repair and Maintenance Guide

    Well-maintained equipment runs longer, works harder, and saves money in the long run. Skipping routine care often leads to breakdowns, costly repairs, and lost time on the job. This guide lays out practical steps to keep John Deere and Wirtgen Group equipment running well—whether you use compact loaders, construction excavators, forestry harvesters, or roadbuilding equipment. At Doggett, we stand behind every heavy equipment we sell, and we’re committed to helping you get the most out of your investment.

    Heavy Equipment Maintenance Types

    There are three main types of maintenance every equipment owner should understand:

    Preventive Maintenance

    Planned services like oil changes, fluid checks, and inspections that help avoid breakdowns before they happen. This often includes checking filters, belts, and fluid levels to catch wear early.

    Corrective Maintenance

    Repairs made after a problem is found, such as fixing hydraulic leaks, replacing worn parts, or addressing electrical issues. For example, repairing a damaged hose or replacing a failing battery before it stops the machine.

    Routine Maintenance

    Day-to-day tasks like cleaning, greasing, and checking tire pressure that keep machines running smoothly. Simple checks include monitoring tire wear, tightening bolts, and keeping air filters clear of debris.

    Areas to Focus On

    Engine and Fluids
    Monitor oil, coolant, hydraulic, and transmission fluids. Top off and change as recommended.
    Filters
    Inspect and replace air, fuel, oil, and hydraulic filters to prevent contamination.
    Hydraulic System
    Look for leaks, cracked hoses, or weak cylinder performance.
    Undercarriage and Tires/Tracks
    Watch for uneven wear, loose or missing bolts, damaged tracks, or low tire pressure.
    Electrical System
    Test batteries, alternators, starter motors, lights, and wiring for secure connections.
    Brakes and Steering
    Ensure brakes are responsive and steering components are tight and reliable.
    Lubrication Points
    Grease pins, bushings, and moving joints to reduce wear.
    Cooling System
    Check radiators, fans, and belts. Remove dirt or debris that restricts airflow.
    Attachments
    Inspect buckets, blades, grapples, or milling drums for cracks, wear, or damage.
    Cab and Controls
    Keep operator stations clean. Test gauges, warning lights, and safety switches.
    Frame and Structure
    Look for cracks, rust, or weld fatigue in the main chassis.
    Fuel System
    Drain water separators and check for leaks in fuel lines.

    Equipment Care & Support

    Strong machines start with good care. Compact loaders, excavators, harvesters, or roadbuilding equipment—routine maintenance keeps them working when you need them most. Doggett offers resources and dealer support to help you extend the life of your equipment and avoid costly delays.

    Compact John Deere equipment at a construction site

    Compact Equipment

    Skid steers, track loaders, and mini excavators require routine checks on fluids, filters, and hydraulic lines. Regular track and tire inspection helps reduce wear and downtime.

    Learn More About Compact Equipment Care
    John Deere construction equipment moving material

    Construction Equipment

    Dozers, excavators, wheel loaders, and backhoes require regular checks on fluids, hydraulics, and undercarriages to prevent breakdowns and keep projects moving.

    Learn More About Construction Equipment Care
    John Deere forestry equipment working in a wooded area

    Forestry Equipment

    Feller bunchers, skidders, harvesters, and loaders need consistent inspection of hydraulics, cooling systems, and cutting parts to avoid failures in the field.

    Learn More About Forestry Equipment Care
    Wirtgen Group equipment at a quarry

    Wirtgen Group Equipment

    Milling machines, pavers, rollers, and crushers depend on routine inspection of wear parts, fluid systems, and calibration to maintain proper operation.

    Learn More About Wirtgen Equipment Care

    Best Practices for Keeping Heavy Equipment in Good Condition

    Follow service intervals

    Always perform maintenance at the intervals listed in the operator’s manual.

    Check fluids daily

    Monitor oil, coolant, and hydraulic levels before each shift.

    Inspect filters

    Replace air, fuel, and hydraulic filters on schedule to prevent damage.

    Watch hydraulics

    Look for leaks, cracks in hoses, and changes in pressure.

    Examine undercarriage and tires/tracks

    Inspect for wear, loose bolts, or damage after use.

    Keep electrical systems clean

    Test batteries and check connections regularly.

    Lubricate moving parts

    Apply grease where required to reduce wear.

    Clean equipment

    Remove dirt, debris, and buildup that can block airflow and damage systems.

    Document maintenance

    Keep accurate service records for each machine.

    Technician servicing heavy equipment

    Why Maintenance for Your Heavy Equipment Is Important

    Heavy equipment is a major investment, and regular maintenance protects its value. Routine care lowers repair costs, prevents downtime, improves safety, and keeps machines performing as designed. Neglecting small issues—like low fluids or worn parts—can quickly lead to breakdowns and expensive repairs.

    We provide the John Deere and Wirtgen equipment you need.

    At Doggett Equipment, we supply the machines that keep your work moving—whether you’re handling compact projects, large-scale construction, forestry operations, or roadbuilding. Every piece of equipment is backed by our knowledge and support so you can work with confidence.

    We provide high-quality John Deere parts.

    As an authorized John Deere and Wirtgen dealer, we ensure you have access to OEM John Deere parts made for your exact machines. Our team knows these systems inside and out, giving you the right guidance on part replacement and maintenance so you can reduce downtime and keep jobs on track.

    Doggett equipment dealership and service facility