Maintenance Matters

July 1999 Issue

Good Jugs, Bad Jugs

One reason cylinders don’t reach TBO is poor quality control. Insist that your A&P inspect new or overhauled jugs.

As engine parts go, cylinder assemblies are a commodity item that most owners will have to buy sooner or later, as part of a major overhaul or perhaps for a mid-time top overhaul.

For the past decade, at least, the new cylinder market has become fiercely competitive but many shops recommend and owners buy reconditioned, yellow-tagged cylinders anyway, to save a few bucks.

Naturally, these are cheaper than new and if bought from a reputable shop, they’re usually a good value. But not always. Quality varies widely and the only protection you have against buying junk is a pre-installation inspection of the cylinder that your mechanic may or may not be doing. And that advice applies eve...

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