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Old 11-14-2017, 10:41 AM
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Default serpentine idler and tensioner bearings

Are these pulleys serviceable? Anyone have the part numbers of the bearings if so?

thanks
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Old 11-14-2017, 12:10 PM
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I bought 2 National 203FF for the idler pulleys, the tensioner pulleys take a different bearing and O'reillys didn't have a sealed version in stock. My husband laughed at me - he was not able to press the new bearings in on his 99 Super Duty, and ended up buying pulleys. I haven't tried yet, but I will.
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Old 11-14-2017, 01:52 PM
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Is on my to do list.
Both bearings are held in by snap rings.
I can't see why they wouldn't press out, new ones in.
That was my plan anyway.
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Old 11-14-2017, 02:30 PM
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You can replace the bearings, but the surface face of the pulley also wears out. I just replace the entire pulley myself, then keep the old ones for spares on the trail.
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Old 11-15-2017, 10:24 PM
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I replaced my bearings, took the koyo bearing part number to a local bearing and hydraulic shop and they cross referenced them for me...quiet and smooth now and I get to keep the metal pulley vs cheap plastic that most places offer now..oh. And Napa was no help crossing pn#s for me.
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Old 11-15-2017, 10:27 PM
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Koyo pn- 6203rr9d. Is the small one idler pulley
koyo 6304rr9d is the large one idler pulley

they were still sitting on my press. Hope that helps
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Old 11-16-2017, 09:35 AM
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Quote:
Originally Posted by Cscotted View Post
I replaced my bearings, took the koyo bearing part number to a local bearing and hydraulic shop and they cross referenced them for me...quiet and smooth now and I get to keep the metal pulley vs cheap plastic that most places offer now..oh. And Napa was no help crossing pn#s for me.
Plastic?? Yikes
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Old 11-16-2017, 12:14 PM
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After looking at Rovers North and Lucky8 websites, I see the only way to replace the tensioner pulley is by purchasing a complete tensioner assembly?? I see where replacing just the bearing on that "plastic" pulley would be good to save on some dough, but you still wouldn't have a road spare. I need to replace mine now so I have a spare!! Maybe feebay has one..
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Old 11-16-2017, 12:17 PM
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So I'm an idiot, I did change out my tensioner pulley, I have a spare in the rig....sorry for the rambling folks..here is just the pulley if someone needs one.


https://www.ebay.com/itm/Dayco-Drive...JaA~-D&vxp=mtr
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