Idler Pulley, what's it's purpose?

[DonM]

Just curious, thanks.

Also, is it possible for me to replace the pulley? I know some pulleys have to be pressed on or off. Can I replace it with normal tools???

Thanks

DonM

 

[tenikiwon]

If this is the pully on the top (above the fan) it is bolted on. I had to replace mine a month ago.

 

[Robb]

Idler pulleys are installed to maintain tension as the belt strecthes a little over time.

Robb

 

[Gofast]

Yes, Normal tools

Idler Tension pulley. It's purpose is to provide tension on the belt ( allow you to remove the belt without un-bolting the altenator etc )

PArts stores carry them somewhere in teh $20 range I believe.

Simple to swap out.

Thanks Rob

 

[DonM]

I think you may have the Idler Pulley confused with the Tensioner Pulley?

I just looked thru my Chilton, and they are dif!

The Tensioner Pulley is used to apply tension. I know where this is and how it works.

The idler pulley is right next to the Alternator Pulley and the Tensioner Pulley is located below the Alternator Pulley.

 

[RiverRat]

The idler just gives an engineer a way to route the belt around all the pulleys so it "bites" enough of each pulley. I think.

 

[tenikiwon]

Originally posted by RiverRat
The idler just gives an engineer a way to route the belt around all the pulleys so it "bites" enough of each pulley. I think.

and so there is another $20 part they can charge you $50 to replace when it take about 5min

 

[BradE.]

I had to replace my Idler pully last month also. The bearings in it were going, it was squeeling like a mother.

You can replace it with normal tools. It's a 15mm bolt I believe. Then torque the new pully to 35-40 ft/lb.

 

[DonM]

Thanks BradE.

Sounds like it's pretty easy. Although, I dont think I have a torque wrench?

 

[tenikiwon]

I didn't torque mine. Just cranked it down. Didn't see any instructions and did it on the highway so I wanted it done....NOW!!