Re: harmonic balancer questions

Posted by K.B. on July 28, 2004 at 17:40:20 from (209.163.30.70):

In Reply to: harmonic balancer questions posted by Dan on July 28, 2004 at 06:06:37:

You got good advice from Allan and Bob. I've always been told that if the rubber ring between the inner and outer pieces shows any signs of cracking or swelling, the balancer needs replacing. If you beat or pull on the outer ring, it is junk. Also, the outer ring of the balancer can "slip". The best way to check for this is to mark the relationship of the inner and outer pieces by drawing a line, put 20 hours or so on the engine, and you will be able to tell if it is slipping. Like Bob said, some engine manufacturers tell you to replace it every so many hours. I've never seen anything from IH, but I think John Deere says 5000 hours for some of their engines. If in doubt, just replace it. When the balancer fails, somthing else is going to break. I once saw an engine that failed due to a broken camshaft. The pistons hit the open valves, and the pushrods were "S"-shaped. What caused the camshaft to break? Vibration- the dampner was found to be in two pieces.

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