Replacing Tensioner Pulley - Ford Powerstroke Diesel Forum
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post #1 of 21 Old 01-29-2010, 03:52 PM Thread Starter
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Replacing Tensioner Pulley

I'm replacing pulleys due to annoying whistling/squeaking noise from serpentine drive. All three had a little visible wobble. Replaced top grooved pulley and bottom pulley with no problem. I cannot get tensioner pulley bolt to budge. I'm using pry bar to hold tensioner in place with 1/2" pull bar to try and break bolt free. My question is, the tensioner pulley bolt is a normal threaded bolt, right? (Lefty loosey/Righty tighty) I didn't want to break bolt trying to remove it from tensioner. I didn't want to replace tensioner since there is no indication of any issues or problems. My truck has 110k miles and I have owned it a little over a year.

Thanks for your help,

Hillfisher

1997 F-250 Ext. Cab Long Bed 4 x 4, Rough Country Front end Leveling Kit, K&N Intake, 3" Downpipe, 4" Exhaust/Muffler & Gutted Cat
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post #2 of 21 Old 01-29-2010, 04:04 PM
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its all the same man. are you removing the belt to do this?

2006 Ford F250 CCSB FX4 6.0




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1999 F350 CCLB 4WD 7.3
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post #3 of 21 Old 01-29-2010, 04:19 PM Thread Starter
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Yes the belt was removed when I replaced pulleys. Top pulley and bottom grooved pulley both required T-50 torx to remove. The tensioner pulley has a 15mm bolt and I had no luck trying to break it free.

Thanks,

Hillfisher

1997 F-250 Ext. Cab Long Bed 4 x 4, Rough Country Front end Leveling Kit, K&N Intake, 3" Downpipe, 4" Exhaust/Muffler & Gutted Cat
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post #4 of 21 Old 01-29-2010, 04:24 PM
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i just didnt know why a pry bar was used. i didnt have to use one on mine. see if you can soak it with wd40. the only reverse threading that i know thats on the trucks is the fan bolt to the water pump.

2006 Ford F250 CCSB FX4 6.0




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1999 F350 CCLB 4WD 7.3
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post #5 of 21 Old 01-29-2010, 04:54 PM
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Originally Posted by hillfisher View Post
Yes the belt was removed when I replaced pulleys. Top pulley and bottom grooved pulley both required T-50 torx to remove. The tensioner pulley has a 15mm bolt and I had no luck trying to break it free.

Thanks,

Hillfisher
The pulley of the tensioner is LEFT HAND THREAD.
BTW the fan clutch is RIGHT HAND THREAD in my OBS.
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post #6 of 21 Old 01-29-2010, 05:03 PM
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I just did mine the other day on my 02 and i never thought i was gonna break it loose. I kept tuggin at it and finally got it. my truck has 220,000 miles on it and it sounds like thats all you need to do is put that pry bar back on and keep tuggin.

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post #7 of 21 Old 01-29-2010, 05:40 PM
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Here's the link to do the SD tensioner mod. if you're interested98-23-14***FEAD - BELT TENSIONER WEAR - VEHICLES WITH 7.3L DI TURBO ENGINE

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post #8 of 21 Old 01-29-2010, 06:58 PM
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hang onto the old pulleys. knock the bearings out and replace them. The bearings are a pretty standard size and are around $10 with tax.

99 F350 CCLB 67k miles.

Sold: 01 Dodge cummins ECLB a few more mods to 353hp

Sold: 97 F250 SCLB, 5 speed 2wd. minor mods to 327hp

See a pattern? next I will have to find one of those 6 door jobbers...
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post #9 of 21 Old 01-30-2010, 12:14 AM Thread Starter
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Thanks for the help! I'll soak it with penetrate of some sort and continue to try and break bolt free. Mainly wanted to make sure I was dealing with left hand threads.

Hillfisher

1997 F-250 Ext. Cab Long Bed 4 x 4, Rough Country Front end Leveling Kit, K&N Intake, 3" Downpipe, 4" Exhaust/Muffler & Gutted Cat
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post #10 of 21 Old 02-02-2010, 10:30 AM
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Exclamation

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Originally Posted by hillfisher View Post
Thanks for the help! I'll soak it with penetrate of some sort and continue to try and break bolt free. Mainly wanted to make sure I was dealing with left hand threads.

Hillfisher
So just for clarifing, the tensioner pulley is LEFT HAND THREADS
right?
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