Tensioner pulley/ idler pulleys - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 03-06-2010, 08:33 AM Thread Starter
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Tensioner pulley/ idler pulleys

Im making a trip up to Vermont in the blue truck in a few weeks, so im gonna go ahead and replace the idler pullers and tensioner pulleys since they are starting to spin on an angle. I bought a tensioner pulley from a loca l part shop a few months agoand now that im looking at it, it seems a little longer than the ones thats on there now. Ive heard on other forums that you have to get a long belt but that doesnt make any sense to me, why wouldn't they just make it the same as the stock one. should i just go to ford and get one or try to make this one work, im going to be replaceing the belt anyways so if i have to get alonger one i will. also the idler pulleys, will i be fine buying aftermarket ones or should i go to ford?


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
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post #2 of 9 Old 03-06-2010, 08:39 AM
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Well first I would do is pull the old tensioner and match it up. Never know the parts store may have given you the wrong part.

You can get idle pulleys from any part store. I see no reason to buy it from the dealer.


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post #3 of 9 Old 03-06-2010, 08:48 AM
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The one I got from NAPA a few months ago was the same way. When I installed the tensioner I was thinking the same way, however I was able to re-use the old belt. Make sure the where it touches the block looks the same, and throw it on there. oh and while you have the belt off, check the idler pulleys if they have bad bearings, the bearings are 6203's a very common bearing that costs about $8, so just replace the bearing.

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post #4 of 9 Old 03-06-2010, 05:04 PM
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install the new tensioner and try your old belt on it. The proof is in the puddin' as I have heard. lol
Good luck

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post #5 of 9 Old 03-07-2010, 06:16 AM Thread Starter
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thats what i figured, the guy assured me it was the right ones, ill pop it on and let you know what happens. ill try changing the bearings on the idlers since there wobbly too, thanks for the help


ive also heard that they are reverse threaded, can you guys tell me which bolts are which so i dont make a mess thanks


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
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post #6 of 9 Old 03-07-2010, 07:26 AM
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When i changed mine they were all reverse thread. Tensioner and both idler pulleys.

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post #7 of 9 Old 03-10-2010, 07:34 AM Thread Starter
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i got teh belt off now and i was trying to ge tthe bolt off the idler pulleys but i cannot ge tthem to budge, i have to turn them right to loosen them correct?


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
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post #8 of 9 Old 03-10-2010, 01:14 PM
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I don't think they are reverse thread. At least i don't remember mine being that way. I replaced the idlers and the tensioner, and it was very simple and quick. I removed the bottom idler first, and the bolts on the tensioner and it popped right off. But make sure you are pulling the whole tensioner off, not just the pulley. The original belt will work perfect even though the arm is longer.

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post #9 of 9 Old 03-10-2010, 02:51 PM Thread Starter
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yea, heads up for anyone who searches this thread in the future, they were NORMAL threads for all the bolts holding the pulleys on and the bolt holding the tensioner on. the only bolt that is revered threaded is the pulley bolt on the tensioner


2016 F450 6.7L XLT 4x4Dump, bone stock
1994 F250 7.3L XLT 4x4 ZF5 , Centurion, 4" Lift, 6637, Gulf Coast Bypass Filter, Big fuel tanks, dana 60 swap, No longer dually
1997 F350 7.3L XLT 4x4Dump, E4OD, 4 in exhaust, TS 6 position, 3/8 Trans line+external filter
2013 Scag Turf Tiger 61" 1.1L Caterpillar Diesel
1960 John Deere 440 Backhoe 2-53 detroit
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