Hey everyone, I need to change the idler pulley and was going to just replace the bearing in the beginning but decided to swap the whole pulley instead. The questions is that the Mircocat states its a 70mm pulley and I checked mine and it is 80mm, our truck is non ACE with A/C.
Anybody here do theres and what size was it? It's the one next to the tensioner(passenger side).
Part number #PQR101060

 

On mine there is a 70mm (by the alt) and a 80mm (by the ac/ps pump).

The 80mm is a 6304 bearing.

I just replaced my 70mm plastic Dayco pulley with a metal Allmakes pulley from Rovahfarm for $20.

I got a NTN 6304 bearing off eBay for $12 for the 80mm pulley

(Edited to correct bearing number)

 

Wow, good job acamato. I mean it.
I once panicked about my idler wheel, near the tensioner. Same story: I had an 80 mm, but could only locate a 70 mm locally and quickly. I went ahead with it, because I remembered how tight the belt was on the tensioner. In other words, I had to really stress that tensioner to get the belt off for removal. I figured the slightly smaller wheel would cause no harm, and might even do some good: ease belt removal/installation, and allow the tensioner to be closer to the middle, more in its "working range." I have no regrets; my serp belt says "Land Rover" on it. Your results may vary. Your belt may be different. I can get you the part number of my belt, if you want.
Good luck.

 

I can get a new bearing for the 80mm no problem and would only cost me $18 but, I have to agree with Nickadams the 80mm makes for a tight belt. Hey Nick if possible could you supply the part number off your belt if possible.

 

Sorry for delay. My serp belt has all green printing. From left to right, it reads, Land Rover logo, ERR.6898, Dayco logo, 7PK2342.
Mine is a 2001, with air conditioning, with no ACE.
Hope this helps.

 

Thanks, checking it out right now.

 

Just to revive this thread, there a total of 3 pulleys that may experience bearing failure in the accessory drive on a DII. There is the 70 mm idler, the 80 mm idler and the 90 mm tensioner, correct? I have bearing numbers for all 3 that I found with a search, but just to confirm is there just 1 bearing per pulley? I forgot to check and I want to get these today.

 

Yes. One per pulley.

I've had to replace mine on a couple of occasions. If I remember correctly, the bearing for the 70mm was just about the same price as a whole new part.

 

Did not someone remove one of the pulleys and find a way to put on a different belt and avoid one of the pulleys?

I am not one to jigger the engineering and do such.
But elimination of a failure point is a good thing.

 

I ended up ordering a Gates tensioner for $35 and a new AMO 70mm idler for $20 and a Dayco belt for $22 from Amazon. I also ordered a 6304 bearing for the 80mm idler because I couldn't find a replacement for a reasonable price. I used the bearing numbers I found in another thread but I just noticed that in this thread a 6308 bearing is referenced. I'll just buy one of those as well so I'll be all set (hopefully).

I'm going to replace the seals and gaskets on my power steering pump so I want to replace all the failure prone pieces I can while I'm at it.