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New Harmonic Balancer Wobbling 700

posted by  TexasAmazon on  Thu May 14 06:35 CST 2009
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last visit: Mon Jun 3 10:51 CST 2013
[RELATED]

My 87' 740 with a B230 had a worn out harmonic balancer. The rubber had separated from the pulley and was causing the belts to slip and make terrible noises. I ordered a replacement from napa ($71) and installed it this morning. I put on the belt for the power steering and water pump and the belt for the alternator. I left off the belt that drives the A/C compressor because my system is low on freon.

I removed and torqued the new harmonic balancer using the rope trick and got it on there good and tight. It wobbles about 3mm to each side. Is this because I do not have the A/C belt on? I made sure I got the key seated before I torqued it down. The pulleys for the power steering and alternator look fine and the belts are tight but not too tight2.

Could this just be a poorly balanced new harmonic balancer?
Could this be a crankshaft bearing issue? (I did't notice it wobbling like this before)



Tyler






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