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fanbelt diagram 6.9l

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Old 02-04-2011, 09:34 PM
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Midnite1987 Midnite1987 is offline
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fanbelt diagram 6.9l

so every time i try to get fan belts for my truck im told there should be only 3... but mine has 4..... anyone have or know where to find a belt diagram? i do not have ac and do have a vacuum pump
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Old 02-04-2011, 10:02 PM
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Theres so many ways to put belts on these.

My 7.3 with no A/C

First belt closer to radiator goes from: Crank to Fan, from Fan to P/S pump.

2nd belt (middle one) goes from crank, fan, then vacuum pump

3rd belt closer to block goes from crank, fan then Alternator.

My Alt has a dual belt pulley but haven't really used it.


On my Factory (not dealer) A/C 6.9

First belt closer to radiator goes from crank, fan then A/C compressor

2nd middle belt goes from crank, fan, then P/S pump

3rd belt closer to block goes from crank, fan, then Alternator

Then theres a 4th small belt from the Alt that goes straight down to the vacuum pump.

I am pretty sure that's how they are from the factory.
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Old 02-04-2011, 10:18 PM
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Festus Hagen Festus Hagen is offline
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I have nearly identical motor packages and identical belt runs.

-Enjoy
fh : )_~
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Old 02-04-2011, 11:33 PM
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Midnite1987 Midnite1987 is offline
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On my Factory (not dealer) A/C 6.9

First belt closer to radiator goes from crank, fan then A/C compressor

2nd middle belt goes from crank, fan, then P/S pump

3rd belt closer to block goes from crank, fan, then Alternator

Then theres a 4th small belt from the Alt that goes straight down to the vacuum pump.

I am pretty sure that's how they are from the factory.

ok thats how mine is - the ac part i thought maybe someone changed up the belts as 1 is a cog not a smooth belt
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Old 02-05-2011, 12:43 AM
LCAM-01XA LCAM-01XA is offline
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Quote:
Originally Posted by IDIDieselJohn View Post
My 7.3 with no A/C

First belt closer to radiator goes from: Crank to Fan, from Fan to P/S pump.

2nd belt (middle one) goes from crank, fan, then vacuum pump

3rd belt closer to block goes from crank, fan then Alternator.

My Alt has a dual belt pulley but haven't really used it.
You got a 2-groove P/S pump pulley, right? And you only use its front groove, the rear one is empty like the front groove on the alt pulley? On all non-A/C trucks I've ever seen both the front and the middle belts go crank-water-P/S (so the P/S pump has two belts driving it), and the vacuum pump gets driven off the alt pulley like they are in the factory-A/C setups... Which would actually be great for hydroboosted trucks cause there the P/S pump serves double-duty, but for the vacuum-assisted trucks what you describe sounds like a better idea.
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Old 02-05-2011, 12:59 PM
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Yup, both Alt and P/S pump on the 7.3 have dual belt pulleys.


It's my dad that set 'em up like that on the 7.3 when he changed for the very first time the belts on it. He thaught it would be a better settup than having that little belt drive the Vacuum pump from the Alt. He found it pretty useless to have 2 belts driving the P/S pump for his application.

So each acceserie has it's own belt off the crank/fan.
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Old 02-05-2011, 11:57 PM
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Quote:
Originally Posted by Midnite1987 View Post
so every time i try to get fan belts for my truck im told there should be only 3... but mine has 4..... anyone have or know where to find a belt diagram? i do not have ac and do have a vacuum pump

Like this: 4 belts and NO A/C
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Old 02-07-2011, 04:17 AM
LCAM-01XA LCAM-01XA is offline
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Oh, I see a saginaw pump on that pic
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Old 08-25-2012, 01:25 PM
FireKracker50 FireKracker50 is offline
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What engine is this a picture of?
Is this a crate motor with banks sidewinder already installed?
I have an 84 F250 with 6.9L naturaly aspirated.
just wondering what my opions are.
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Old 08-25-2012, 07:50 PM
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87crewdually 87crewdually is offline
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Quote:
Originally Posted by FireKracker50 View Post
What engine is this a picture of?
Is this a crate motor with banks sidewinder already installed?
I have an 84 F250 with 6.9L naturaly aspirated.
just wondering what my opions are.
It's a pic off of Banks website. It was used for advertising the Sidewinder System.
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