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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #16 (permalink)  
Old 02-25-2010, 09:06 AM
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Originally Posted by Scndsin View Post
This past weekend I did some work on a friends 93 Taurus. I found that the tensioner's idler has the same bearing diameter & depth and is ribbed & shouldered like the Alt pully. I plan on using this if I develop belt throwing issues.

Hope this helps someone.
I like this, I would have gotten one of these back when I removed mine if I had known.
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Old 02-25-2010, 09:59 AM
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Originally Posted by Scndsin View Post
I recently removed my "soon to lock up" air pump on my 5.8. While shopping for the plastic idlers (which had developed flat spots) I found that there were 2 different types available for the tensioner. 150s got plastic, 250s got metal which is what I bought.

Initially, I tested alternate routing the original belt. By going "over" the fixed idler, under the tensioner, then around the Alt, then back to the crank. This actually worked. However, the Alt would squeal for few seconds when first cranked and when put under heavy electrical load.


Since I didn't care for that, I took a length of 3/8ths-7/16ths heavy nylon rope, routing the rope under the tensioner first (after it comes off the AC compressor) completely by-passing the upper idler, then looping the Alt before returning to the crank.

I took the rope, hung it on a nail & stretched it out tight, then tacked another nail at the bottom of the loop. This gave me a length of 47-1/2 inside the loop which I doubled to give me a 95 inch starting point.

I used my locally owned parts house to source the belt. Took 3 trips, but finally wound up with a 96.08 inch belt that gave the best tension & no noise. After a couple hundred miles, I've had no problems.

This past weekend I did some work on a friends 93 Taurus. I found that the tensioner's idler has the same bearing diameter & depth and is ribbed & shouldered like the Alt pully. I plan on using this if I develop belt throwing issues.

Hope this helps someone.
can you post a picture of this or a diagram please
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Old 02-25-2010, 10:05 AM
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can the tensioner be moved to where the idler is?
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Old 02-25-2010, 12:24 PM
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can you post a picture of this or a diagram please
Notice how the top idler is completly by-passed. You can see metal idler on the tensioner.


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Originally Posted by jjohnson1179 View Post
can the tensioner be moved to where the idler is?
I doubt it, but don't know. Does your 93 use a 3-bolt side mount Alt? Or does it have conventional through-the-ear face bolts?
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Old 02-26-2010, 07:11 AM
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its the back on an aligator
Click the image to open in full size.
Those are good belts.
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Old 02-08-2011, 03:38 PM
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can u send me the link of the pully ay Dsillyboxer@aol.com i gotta have a pully for where my smog pump was its a 95 f250 351w
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Old 02-09-2011, 07:15 AM
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Umm, if you're asking me, I didn't use a pulley to replace the pump. Just a shorter belt rerouted & ditched the pump entirely.
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Old 02-21-2011, 09:20 AM
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For anyone using the search function in the future:

Using the routing described by Scndsin above on a 5.0L, you will need a 94" belt (940K6). Hope that helps.

-Rod
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Old 03-09-2011, 10:03 AM
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well, I think the bearings on my 96's smog pump are going. Anyone know off hand if smog pump adds air before and ofter the 3rd 02 sensor on an obd2 truck?
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Old 03-09-2011, 03:05 PM
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I thought OBD-II trucks did not use a "SMOG" pump?
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Old 03-11-2011, 04:30 PM
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Scndsin says a 96.08" belt?, whitemax says 94"...

what manufacture did you go with? the goodyear gator back? nobody carries goodyear anymore everyone switched to Gates, supposed to be better i guess?

no problems with belt jumping?

Click the image to open in full size.
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Old 03-11-2011, 06:13 PM
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Quote:
Originally Posted by jborushko View Post
Scndsin says a 96.08" belt?, whitemax says 94"...

what manufacture did you go with? the goodyear gator back? nobody carries goodyear anymore everyone switched to Gates, supposed to be better i guess?

no problems with belt jumping?

Click the image to open in full size.

Scndsin has a 5.8L, I have a 5.0L. Hence the difference in belt length. The routing you posted in red is correct. I'm running a cheap Autozone belt, with no belt jumping issues.

-Rod
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Old 03-11-2011, 06:18 PM
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Your second diagram is how my 5.8 is routed. Whitemax is running a 5.0

Edit: We hit @ the same time.
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Old 03-11-2011, 07:38 PM
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got it! thank the both of you! i've a 5.8 so ill go with the 96"ish belt

Im gonna make a new thread with JUST that info and the pics, since i kinda thread jacked this one. JUST TO BE CLEAR the routing is the same both 5.0 and 5.8?
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Old 03-11-2011, 08:18 PM
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Quote:
Originally Posted by jborushko View Post
JUST TO BE CLEAR the routing is the same both 5.0 and 5.8?
Yep, the lengths are just different.

-Rod
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Old 03-11-2011, 08:18 PM
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