Photos 2004 Explorer 4.0 crank pulley balancer

[Bbetros]

Hey friends! New part is already ordered, but I'm hoping someone out here can help me figure out just in the world happened here! This all started with a tensioner replacement, when attempting to replace the belt this was discovered! I've searched and searched and am unble to find any crank balancer that is smooth and not grooved. My first thought was that it separated and the belt was riding on the rubber inside, but even if that is true where is the grooved pulley?? Please help, I've been down a rabbit hole online for days and cannot wrap my mind around it.

 

[wollimann]

The balancer lost his grooved pulley, i think. I don't know if it's a common issue but it happens.

C

How to: Thread '4.0 Harmonic Balancer - know when it's going bad & how to fix'

December 29, 2010

MODS, please "sticky" this thread...

I have searched this site and have included the pertinent 4.0 harmonic balancer threads into this one, to make it easier for future reference and to help those who are seeking the proper information regarding the 4.0 balancer issues.


This is a very problematic issue w/ the 4.0 Explorers (as well as the 4.0 Sport Tracs).

The first signs of a 4.0 balancer starting to fail - distinct "chirping or squealing" of which resembles a serpentine belt squeal. At idle, the noise will resemble a "chirp", however, when driving, the noise...

• Cobra Jet
• Replies: 56
• Forum: Stock 2002 - 2005 Explorers

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