Common Repairs You Should Expect with Older Equipment

by Sam from Dige international Trading Limited

Even the best-maintained second-hand machines will need repairs eventually. Understanding the most common issues with older equipment helps you plan better, budget smarter, and avoid surprises after purchase. At Dige International Trading, we prepare our buyers with the right knowledge before they invest.

Engine Wear and Rebuilds

Used machines often come with hundreds or thousands of hours on the engine. Expect oil leaks, worn pistons, or valve issues over time. Minor repairs might involve replacing gaskets or seals. In high-hour machines, full engine rebuilds may be necessary. Knowing the signs early—such as smoke, power loss, or overheating—can prevent complete engine failure.

Hydraulic System Failures

Hydraulics are essential in excavators, bulldozers, and loaders. Over time, hoses become brittle, seals wear down, and pressure drops. Common repairs include:

• Replacing leaking cylinders or hoses

• Rebuilding control valves

• Flushing contaminated hydraulic fluid

A neglected hydraulic issue can become very expensive—so catching it early is key.

Electrical and Sensor Problems

Older machines are more likely to develop electrical issues, especially with exposed wiring and aging sensors. Repairs may include:

• Replacing corroded connectors

• Diagnosing ECU faults

• Fixing non-functional lights or displays

While often less expensive than mechanical repairs, electrical issues can stop work entirely if left unchecked.

Track and Undercarriage Wear

If you’re buying a tracked machine like an excavator or bulldozer, expect undercarriage wear. This includes track links, sprockets, rollers, and idlers. It’s often the most expensive wear item on a used machine. Simple visual checks for uneven wear or slack tracks can tell you what to expect.

Cab & Control Wear

Seat adjustments, joysticks, air conditioning, and gauges might fail with age. Though not critical, these comfort and control features affect operator efficiency. Replacing them improves productivity and operator safety.

Our Tip: Inspect Before You Buy

At Dige International Trading, we inspect every machine thoroughly and share detailed reports. We also help buyers budget for minor future repairs and advise on the total cost of ownership.

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