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Used excavator checklist — what to check before you buy in Malaysia

· Roda Editorial

excavatorheavy machinerybuying guide

A used excavator can look fine standing still and still need an undercarriage or a hydraulic pump within months. Most of what you need to know shows up when the machine is cold, then working, then hot. Use this checklist at the viewing, and bring a mechanic who knows the brand if you can.

This guide reflects information as of October 2026. Where a rule is mentioned, it is general information, not legal advice.

Before the viewing

  1. Ask for the model, serial number, year and hours, with photos of the serial plate and meter.
  2. Ask for the service records and recent major repairs.
  3. Ask the seller not to start the machine before you arrive. A cold start tells you more.
  4. Ask what work it did. Breaker, quarry and demolition work wear a machine faster.

Hour meter

  • Compare the hours with the year, the service records and the wear on the pedals, levers, seat and bucket pins.
  • A replaced meter should come with a record of the change. Ask for it.
  • Low hours on an old machine with worn pins and a polished seat do not add up.

Undercarriage

On a crawler excavator, the undercarriage is one of the costliest parts to renew, so check each part:

  • Tracks and chains: measure the sag against the maker's figure. Look for worn bushings, loose bolts and cracked shoes.
  • Sprockets: hooked teeth mean the sprocket and chain have worn together.
  • Rollers: look for leaking seals and flat spots.
  • Idlers: check for wear, and the track adjuster for leaks.
  • Frames: look for cracks and welds.

Drive straight on flat ground. One side should not lag.

Hydraulics

  • Look for leaks at the cylinders, hoses, fittings, main pump and swing motor. Wet dirt around a fitting is a clue.
  • Check the cylinder rods for scoring and damaged chrome, which wear the seals.
  • Run each function at full speed with the oil warm. A tired pump shows as slow or weak movement when hot, especially when combining functions.
  • Ask when the hydraulic oil and filters were changed.

Drift test

  1. Fill the bucket, or hold a load the machine is rated for.
  2. Raise the boom and hold everything still with the engine idling.
  3. Watch the boom, arm and bucket for a few minutes.

Noticeable creeping points to worn seals or valves.

Boom, arm and bucket

  • Look for cracks and welds at the boom foot, the boom-to-arm joint, the cylinder mounts and the bucket linkage. Repairs are common on working machines; ask who did them and when.
  • Move the arm and bucket slowly and look for play in the pins and bushings.
  • Check the bucket teeth, cutting edge and side cutters.

Swing

  • Swing left and right, then stop. The upper structure should not knock or rock on the swing bearing.
  • With the bucket raised, rock the arm gently and watch for play at the swing bearing.
  • Listen for grinding from the swing motor and gearbox.

Engine

  • Cold start: watch for hard starting and heavy smoke. White or blue smoke that does not clear can mean internal wear.
  • Blow-by: with the engine warm and working, look at the oil filler or breather. Heavy fumes puffing out suggest worn rings or liners.
  • Fluids: check the oil for a milky look and the coolant for oil.
  • Monitor: check for fault codes and warning lights.

Cab and controls

  • Test the monitor, gauges, lights, horn, wipers and air-conditioning.
  • Check the safety lock lever. The hydraulics should not respond when it is raised.

Paperwork

An excavator does not always come with a vehicle registration record, so collect the documents that prove ownership and history:

  • The original purchase invoice and the seller's proof of ownership, matching the serial number on the machine.
  • A release letter if it was under hire purchase or a lease.
  • For an imported machine, the customs import documents. MITI's Approved Permit page sets import conditions, including an age limit, for some categories of used heavy machinery. If anything is unclear, check with MITI and the Royal Malaysian Customs Department.

If the machine has wheels and will travel on public roads, ask JPJ whether it needs to be registered. Crawler machines are normally moved on a low loader.

Safety duties

Under the Occupational Safety and Health Act 1994, which has applied to all places of work since 1 June 2024, an employer must provide plant that is safe so far as is practicable, and the information, instruction, training and supervision employees need. If you plan to use an excavator to lift loads, ask DOSH whether its certificate of fitness rules apply; DOSH classifies lifting machinery by features and function, not name.

Before you pay

  1. Agree the price, subject to a working test and a mechanic's check, in writing.
  2. Match the serial number with every document.
  3. Pay the owner named on the documents, not a third party. Read how to avoid WhatsApp scams.
  4. Get a signed sale agreement and a receipt that lists the serial number.

Browse excavators for sale and other machinery on Roda. Ads are posted by sellers; Roda does not inspect machines or check ownership.

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