boostedte37

My tach started bouncing around this morning on the way to work and after I got there I lifted the hood with the truck idling the harmonic balancer or crank pulley which ever looks like its about to wobble off. I tried to move it with my hand to see if it was loose and doesn't appear to be. Anyone ever had this problem?

boostedte37

I did a search and found a post talking about rubber coming out of the balancer, mine has some sticking out but looks like it was made that way. Yes, No, anybody know?

wannadiesel

If the truck is a 5 speed, use a pry bar to see if you can move the crank back and forth. The thrust bearing my be shot.

boostedte37

I would hate to think that was the problem

RCW

The balancer is of two piece construction with a rubber spacer cast between the inner and outer rings. Once they start tossing the rubber it is time to replace them.

JimmieD

You may have to remove a pulley and belt to check the problem out. If you can get a clear shot at the harmonic damper itself with an inspection mirror see if the outer rim is separating or 'off kilter' with the center hub part. There is an elastometric/rubber filler between damper hub and rim and as mentioned it can separate. Not a hard fix if that's the case, but you'll probably need a harmonic damper puller to do the job. Being a diesel the new damper shouldn't be more than 4-5 times the cost of a comparable gas engine damper part.....

JimmieD

boostedte37

Yea it is loosing rubber how do you keep the crank from turning over on with automatic trans I got two of the four bolts loose but the other two are too tight and the crank keeps turning when I put alot of pressure on the pullhandle

boostedte37

rememberd I could access the flexplate and stop it there