Pro tip: I thought the old-timer's trick for checking pump wear with a penny was just a story, but it saved me a full day of downtime last week.

We were losing suction on the 10-inch cutterhead dredge, and a guy on the crew said to put a penny in the pump volute to check the gap. I rolled my eyes, but we did it and the penny slid right through the wear plate clearance. Convinced me to check the impeller, which was shot. Anyone else have a simple field test that actually works?

3 comments

3 Comments

corablack24d ago

Yeah, that penny trick is a classic for a reason. I read an old maintenance manual that said a dime is for checking new wear rings, and a penny is for the "time to really think about it" gap. It's wild how those old hands-on methods stick around because they just work, no fancy tools needed. I've heard of using a feeler gauge on a belt drive too, but the coin thing is so much faster when you're just trying to see if you're in the ballpark. Saves so much time over pulling everything apart just to look.

avery_ross24d ago

Totally, and like @stellaperry said, the sound tells you everything after that quick coin check.

stellaperry24d ago

My old foreman used to say if the penny falls through, grab your tools. The dime check is good for a quick pass, but I always go by the sound after that.