A replacement engine or compressor is a six-figure decision with a long lead time. Before you make it, it's worth knowing what the existing machine actually has left — and what it would cost to keep it useful.

What the assessment covers

• Condition, not age. Hours, maintenance history, wear measurements, oil-analysis trends, and what the machine is telling us when it runs.
• The failure modes that matter. Which components are life-limited, which are consumable, and which are being killed early by how the machine is operated or maintained.
• Upgrade vs. rebuild vs. replace. The real numbers — parts, labor, downtime, and remaining risk — for each path.
• Maintenance strategy changes. Often the cheapest life extension is changing what happens between overhauls, not the overhaul itself.

The deliverable

A written plan: what to do, in what order, at what cost, and what it buys you in years and reliability. Where the honest answer is "stop spending money on this machine," the plan says that too — with the reasoning, so you can defend the decision to whoever holds the budget.

You might need this if…

• A major overhaul is due and you're not sure the machine deserves it.
• A vendor is quoting a replacement and you want a second opinion that doesn't sell equipment.
• The machine is obsolete — parts are scarce, and nobody has mapped the options.
• You're inheriting equipment with unknown history and need a baseline.