AMC Eagle Den Forum

The Mighty 258 => General Service and Diagnosis => Topic started by: luvmyeagle on November 10, 2011, 07:34:57 PM

Title: question
Post by: luvmyeagle on November 10, 2011, 07:34:57 PM
what is the roller called that the fan belt rides across towards the bottom of the engine?...i have three v-belts on mine and it appears to be making a noise...can i lubricate it or can i buy another one? and what is it called?......it's not the idler pulley that the belt rides in.....thanks
Title: Re: question
Post by: BenM on November 10, 2011, 08:47:48 PM
It's an idler. You should be able to pull it out and take a look, it is just held on with one bolt in the back. I don't know if you can disassemble it or not.
Title: Re: question
Post by: carnuck on November 11, 2011, 02:17:47 AM
Harmonic balancer?
Title: Re: question
Post by: jim on November 11, 2011, 01:16:50 PM
On the 4.2 the idle pulley is at the top.
Title: Re: question
Post by: luvmyeagle on November 11, 2011, 04:50:29 PM
found out it's called accessory belt idler pulley...my car is an 85 but it only lists it for an 84, does anyone have any info on it and where i can get one?....maybe my eagle was a late 84 and they listed it as an 85...go figure
Title: Re: question
Post by: luvmyeagle on November 11, 2011, 05:31:06 PM
not sure if i can bypass it or not, this pulley is located beneath the compressor and the belt goes from crank to  idler pulley on top (which has the groove for belt) to compressor, belt rides on top of this pulley (which has no groove for belt, back side of belt rides across this pulley) then goes back to crank..if i try to bypass i will need shorter belt, can it be done?
Title: Re: question
Post by: kajsdf on December 15, 2011, 08:15:07 PM
i would think a shorter belt would work fine, i can't think of any real purpose it had being there
Title: Re: question
Post by: eaglebeek on December 16, 2011, 12:17:30 AM
I'm guessing that idler is there to control belt slap on the long side of the belt. Mine has been off for several years and I've had no ill effects...I think you can do without it if it's failed. :eagle:
Title: Re: question
Post by: milliard431 on December 16, 2011, 03:30:43 PM
I think I just saw one on Kennedy American's web site.
Title: Re: question
Post by: donnyeagle on December 30, 2012, 11:08:20 AM
I just looked at Kennedy Americans website and they do not list one.
Title: Re: question
Post by: Amc1320 on February 19, 2013, 07:45:36 PM
I either need to get one of these or do without it, or try to rebuild it

Mine makes a noise till it warms up a bit, think it's on it's way out!

I read soe where on here that you can just replace the bearing in it
Title: Re: question
Post by: AMC1 on October 15, 2013, 11:27:35 AM
I took mine off & ran a shorter belt. I didn't like the fact that there wasn't a groove in the pully & the belt always seemed to ride to one side and almost off. I made adjustments etc. but it made me nervous. The shorter belt gives no problem. Kennedy Anerican may have one if you still want one. Give him a call & sometimes he actually puts you on hold while he checks his yard for a part.