NCSUpilot

I decided to replace my serpentine belt today ( 110k miles) and while I had it off I spun the bearings and I could hear them. I also used a stethoscope with the belt on and engine running and all three idler pulleys are making noise.

I am talking about the 2 idler pulleys as well as the auto tensioner pulley.

Anyone know where I can find the actual bearing numbers so I can just press out the old and press in the new bearings? From my experience once a bearing starts making noise, it is a pretty quick decline. I would like to be proactive instead of waiting for them to seize up. Any ideas?

NCSUpilot

Here are the specific part numbers:

Auto Tensioner Pulley - 11955
Top Pulley - 11925T
Bottom Pulley - 11925TA

NCSUpilot

Wanted to see if anyone has pulled off their pulley and seen the bearing numbers. Nissan's pulley's are crazy expensive - 300+ for all 3...and I'm wary of cheap ones at other auto parts stores.

ThinBlue82

iTrader: (1)

Sometimes you must pay the cost to be the boss. Or in this case drive the bosses car. $300 for all three does sound expensive.

LtLeary

NCSUpilot,

Did you get these replaced yet? If so, did you do it yourself or have it done? I ask as I decided to order new idler pulleys and auto tensioners (gates 36356 and 36357) and gates 39155 (tensioner assy) about $180 in parts vs the less expensive route of the febest brand (almost half the price.)

If you did the work yourself, any tips or tricks to share?

Thanks
Lt

NCSUpilot

Hi Lt, I still have not done the work...I don't drive nearly as much as I used to so the wear hasn't gotten bad enough on it. I changed out the belt and it seems pretty easy to access all the pulleys, but don't know for sure.

By chance are you able to read the bearing number on them? Or can you share the bearing numbers when you get the old ones off?

LtLeary

Will do...probably start next week unless it is too hot

NCSUpilot

Lt, get a chance to getting around to replacing the pulleys yet? I am looking at doing some maintenance before it gets too cold out.

LtLeary

Yes, I did! The temp got down to the 80s so I decided to give it a go. My apologies for not responding earlier.

The only part# I could see on any of the two Idler pulleys and auto tensioner was on the idler pulleys.

The p/n of the bearing itself was Koyo Japan 66301RMH.

I bought all my "pulley assemblies" from Amazon

Tensioner....Gates 39155
Idlers....Gates 36356 and 35357.

Put all of them on even though the old ones weren't "bad" just old. The only issue I had was removing the top bolt from the tensioner...it lies behind the power steering pulley so couldn't get a socket on it with enough torque to break it free. Used an offset 13mm and was able to break it free enough to angle a socket on it and remove it without having to pull the power steering pulley off!

NCSUpilot

Awesome, thanks for the reply!