Loose Harmonic Balancer
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
This is common. Do a search. Replacement is your only option if you are talking the outer portion of the balancer. If it is loose on the crankshaft, someone may have reused the attachment bolt. The bolt needs to be replaced and properly torque.
Last edited by Eric D; Nov 19, 2011 at 08:44 AM.
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 890
From: South Western Ontario
If it has spun on the hub then you should likely pull-it and replace it with an aftermarket unit so you can pin the crank. Pinning and a properly torqued new bolt should work even if the press-fit is weak.
You need a new crank if the crank snout is worn to the point that a new balancer is a slip fit.
You do need to check because the most common failure of a stock unit is the outer ring slipping off the inner hub.
Peter
You need a new crank if the crank snout is worn to the point that a new balancer is a slip fit.
You do need to check because the most common failure of a stock unit is the outer ring slipping off the inner hub.
Peter
