Idler pulleys

[jave]

Hi,

Today my mechanic and I replaced the belt tensioner and ONE idler pulley (above the crankshaft). Is there another idler pulley to replace?

Car: 2009 Toyota Aurion AT-X. Nothing special.

Engine is quiet now but old pulley may decide to be noisy in the future. Is the top idler pulley the same as the one below?

Jave.

[Tony Prodigy]

There are two idler pullies as per the diagram. 

I haven't had to do mine, but I suspect the Idler pullies are the same. Tensioner pulley differ to the idler pulley.

I would've just done the whole lot while you were in there. Doesn't make sense changing one and not the other.

Here's a kit you can buy

https://www.ebay.com.au/itm/GATES-DRIVE-Belt-PULLEY-FOR-Toyota-Aurion-GSV40R-2006-2012-2GR-FE-3-5L-DOHC/302481777048?hash=item466d51a198:g:8aoAAOSwwPtcdmH5

1 - crankshaft 2 - tensioner pulley, 3 - water pump, 4 - idler pulley (opt.), 5 - power steering pump (opt.), 6 - the idler pulley, 7 - alternator, 8 - compressor.

 

Edited March 10, 2021 by Tony Prodigy

[campbeam]

Toyota did introduce an upgraded version of the idler pulley to address a squeaking noise issue with earlier versions of the 2GR-FE engine.

I have not had to replace the idler pulleys but I have re-lubricated them with silicone grease.

Toyota Squeaking noise from engine compartment.doc

[jave]

15 hours ago, Tony Prodigy said:

There are two idler pullies as per the diagram. 

I haven't had to do mine, but I suspect the Idler pullies are the same. Tensioner pulley differ to the idler pulley.

I would've just done the whole lot while you were in there. Doesn't make sense changing one and not the other.

Here's a kit you can buy

https://www.ebay.com.au/itm/GATES-DRIVE-Belt-PULLEY-FOR-Toyota-Aurion-GSV40R-2006-2012-2GR-FE-3-5L-DOHC/302481777048?hash=item466d51a198:g:8aoAAOSwwPtcdmH5

1 - crankshaft 2 - tensioner pulley, 3 - water pump, 4 - idler pulley (opt.), 5 - power steering pump (opt.), 6 - the idler pulley, 7 - alternator, 8 - compressor.

 

Ok. Well, I forgot about the top pulley (6). At least it's in a reasonable position to get to. Will replace soon.

[jave]

4 hours ago, campbeam said:

Toyota did introduce an upgraded version of the idler pulley to address a squeaking noise issue with earlier versions of the 2GR-FE engine.

I have not had to replace the idler pulleys but I have re-lubricated them with silicone grease.

Toyota Squeaking noise from engine compartment.doc 218.5 kB · 0 downloads

How did you regrease them? Did you "inject" grease into the bearing shield?

[campbeam]

The following YouTube video shows how ro grease a sealed bearing.

After taking the tension off the serpentine belt, I removed both idler bearings then used a pick and a small bladed screwdriver to remove to remove the seal cover. I may have removed the cover on both sides packing the grease into one side and refitting the cover then doing the same on the other side. Next weekend I checked the bearings while they were still fitted and wiped them down to remove any surplus grease. Many months later when I had to replace the water pump, I had to remove the idler pulleys and the bearings checked out just fine. The tensioner pulley also had to be removed and I may have repacked that bearing. [Poor memory 😁] Anyway it was checked and determined that condition was fine with no need to buy a replacement.