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Fixing Timing belt Idler Bearings


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6 replies to this topic

#1 bearbalu

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Posted 18 December 2004 - 02:22 PM

Anyone has links/ideas on how to fix the idlers on the timing belt?

On my EJ25/2.5 DOHC, the idler next to water pump is a little noisy. It is 100+ bucks. Should I just open the seal and put some grease in? If so what grease?
Should I actually replace the bearings? Where would I buy them?

#2 Subarunation 713

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Posted 18 December 2004 - 04:10 PM

Anyone has links/ideas on how to fix the idlers on the timing belt?

On my EJ25/2.5 DOHC, the idler next to water pump is a little noisy. It is 100+ bucks. Should I just open the seal and put some grease in? If so what grease?
Should I actually replace the bearings? Where would I buy them?

You can give that a try but I would strongly discourage it. I just bought a 97 OBW for $500. Why so cheap? The timing belt had come off and bent some valves because the previous owner didn't spend $70 for a new idler pulley or $80 for a new timing belt when the head gaskets were replaced. The idler pulley melted apart and there were ball bearings everywhere. The idler was so hot it melted a hole in the front cover.

If the idler is making noise it is because of the races in the bearing having too much play and probably not a lubricant issue.

I priced that idler at: https://www.1stsubaruparts.com/
Description Year List Price Your Price
IDLER, All Models - 2.5L, 1996-1998, $76.75, $57.56


I realize $58 isn't free but if the previous owner of my car had spent $100 (shop cost) for a new idler installed I wouldn't have a sweet 97 OBW for $500 and she would still own a $4000 car!

Just my 2 cents and my 2 cents are 50% off between now and December 25!
Greg

#3 tcspeer

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Posted 18 December 2004 - 07:58 PM

Replace it! and any of the rest of them that are not smooth and quite. Especially if it is a 2.2 and newer than 1996.

#4 canajun2eh

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Posted 18 December 2004 - 10:25 PM

You can save some money by taking the idler pulleys to a bearing supply place. They can press out the old bearings and install new ones for you. That would be a lot cheaper than buying completely new assemblies.

#5 Phillip

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Posted 19 December 2004 - 01:56 PM

The cost of bearing failure will likely be catistrophic! If the bearing locks up, you'll immediately shear the timing belt and will likely destroy the engine. You could have a machine shop press in a 'will-fit' bearing, but I sure wouldn't recommend it - the cost of failure is too great. Napa or CarQuest sells a replacement for about $60.

Anyone has links/ideas on how to fix the idlers on the timing belt?

On my EJ25/2.5 DOHC, the idler next to water pump is a little noisy. It is 100+ bucks. Should I just open the seal and put some grease in? If so what grease?
Should I actually replace the bearings? Where would I buy them?



#6 bearbalu

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Posted 19 December 2004 - 02:04 PM

Thanks folks. I will probably just replace it...might have to wait a few days before I get the part from 1stsubaru.

#7 edrach

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Posted 19 December 2004 - 09:06 PM

If the idlers are like the tensioners in the EA82 engine, the bearings can't just be pressed out and replaced. The older tensioners have the inner race held in by peening over the inner shaft; once that's destroyed there's no way to use the original with a new bearing. A good machine shop could get around that for you, but then it'll cost you more than the dealer OEM part. Don't skimp on tensioner costs with an interferance engine like yours.

You can save some money by taking the idler pulleys to a bearing supply place. They can press out the old bearings and install new ones for you. That would be a lot cheaper than buying completely new assemblies.






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