Excavator Daily Maintenance Checklist

Most excavator failures that strand a machine on a job aren’t sudden — they’re a small problem someone could have caught on a daily walk-around. Ten minutes before start-up is the cheapest insurance you’ll ever buy.

Before you start it (cold checks)

• Engine oil — check on level ground, top to the full mark with the right diesel oil.
• Coolant — level at the reservoir; never open a hot cap.
• Hydraulic fluid — sight glass or dipstick; clear amber is good, milky or dark is a problem.
• Fuel/water separator — drain off any collected water. Coastal humidity puts water in tanks fast.
• Air filter indicator — if it shows red/restricted, service it; don’t wait.
• Walk the undercarriage — track tension, missing or cracked pads, packed mud, leaks at the final drives.
• Grease the points — the boom, stick, and bucket pins take daily grease. Dry pins wear into expensive slop.

Look for what’s leaking or loose

Walk a full lap. Look under the machine for fresh puddles — engine oil, coolant, or hydraulic oil each have a different look and location. Check hydraulic hoses for chafing, bulges, or weeping fittings. Eyeball the bucket teeth and pins, the cylinders for scored or weeping rods, and any loose or missing hardware.

After start-up (warm checks)

• Let it warm up; don’t slam into heavy digging cold — hydraulic oil needs to reach operating temperature.
• Watch the gauges: oil pressure up, coolant temp normal, no warning lights.
• Listen. New noises — a whine in the hydraulics, a knock, a squeal — are the machine telling you something early.
• Cycle the functions and feel for drift, slow speed, or jerkiness.

Why the grease gun matters most

The single most-skipped and most-damaging omission is daily greasing. Pins and bushings run under enormous load; without grease they gall, wear oval, and create slop that wrecks bucket control and eats pins. It takes two minutes a day and saves four-figure repairs.

Keep a log

Write down hours, what you topped off, and anything you noticed. Patterns — “adding a quart of hydraulic oil every other day” — are how you catch a failing seal before it dumps on the job.

When the walk-around turns up something you can’t sort out — a persistent leak, drifting cylinders, a restriction you can’t clear — our shop can get the machine diagnosed and back to work.