- Joined
- Mar 24, 2005
- Location
- Stokesdale-Greensboro
My neighbor asked me to look at his 2004 Exploder with him. He had a belt squealing, then found sometting really strange on the crank pulley. It looked like it was on backwards!?
He bought this used a few months ago, so he doesnt really know the history behind it. It just started squealing a couple weeks ago. I can't remember if it was the 4.0L or 4.6L V8, but the belt routing matched what was shown on the decal. What was really confusing was the crank pulley was smooth, and the belt ribs were riding on the smooth section. Behind the smooth section of the pulley was the grooved section. There is no way the belt could have been routed on the grooved part of the crank pulley, it was too far out of alignment from the rest of the belt drive. Could the pulley have slid towards the engine? I don't see how it could have been installed backwards; there is a crank sensor that looks like it triggers off the crank pully too, just to add to the confusion. But it really looks like if you could flip the crank pulley and put the grooved section in front of the smooth machined section, everything would be good, except maybe the crank sensor. The smooth section was about 4" diameter, the grooved part was about 5".
I dunno, not my junk, it just confused the heck outta me, now I'm curious as to what's going on. I told him to keep an eye on the voltage to make sure the alternator was charging. He's lucky its not 100degrees out and really needing the water pump to spin. There is some serious underdrive going on with that slippage (ribbed belt on smooth, smaller diameter pulley), and belt life isnt gonna be too good either.
He bought this used a few months ago, so he doesnt really know the history behind it. It just started squealing a couple weeks ago. I can't remember if it was the 4.0L or 4.6L V8, but the belt routing matched what was shown on the decal. What was really confusing was the crank pulley was smooth, and the belt ribs were riding on the smooth section. Behind the smooth section of the pulley was the grooved section. There is no way the belt could have been routed on the grooved part of the crank pulley, it was too far out of alignment from the rest of the belt drive. Could the pulley have slid towards the engine? I don't see how it could have been installed backwards; there is a crank sensor that looks like it triggers off the crank pully too, just to add to the confusion. But it really looks like if you could flip the crank pulley and put the grooved section in front of the smooth machined section, everything would be good, except maybe the crank sensor. The smooth section was about 4" diameter, the grooved part was about 5".
I dunno, not my junk, it just confused the heck outta me, now I'm curious as to what's going on. I told him to keep an eye on the voltage to make sure the alternator was charging. He's lucky its not 100degrees out and really needing the water pump to spin. There is some serious underdrive going on with that slippage (ribbed belt on smooth, smaller diameter pulley), and belt life isnt gonna be too good either.
