noun, noun or participle which takes 'suru', transitive verb
overhaul; complete inspection and repair
Used for thorough disassembly, inspection, and repair of machinery, engines, or systems. Often implies a major periodic maintenance.
エンジンをオーバーホールに出した。
I sent the engine in for an overhaul.
この機械は定期的にオーバーホールする必要がある
This machine needs to be overhauled regularly.