Hey all,
Just wanted to share some infomation I have recently learnt, after the alternator clutch pulley on my 07 D40 turbo diesel ST-X started to fail, hopefuly this might help someone in the future.
After a few water crossings labour day weekend, the alternator started to make some grinding noises, along with my scangauge showing that the alt wasn't charging and the battery light coming on. This was only at start up, and after running at higher RPM would all go back to normal. The noise was only being made while the alt wasn't charging, so that made me believe that the alt bearings were fine.
Ok so now to find a new pulley. The YD25 engine from my research has 2 differant pulleys. Early models have a 17mm hex socket on the front of the pulley, later models have a 33 tooth spline. These pulleys have the same shaft but have a differant offset. I found this out at http://http://www.precisionparts.com.au/epcat.pdf. Nissan quoted me $475 for the 17mm hex style, Precision Parts quoted me $62 for a after market Nuline version, Repco also sell these Nuline pulleys but will cost you $130.
After receiving the pulley from precision part the next day (those guys were very helpful!! and no im not connected to them in anyway haha) the next step was to change the pulley. It may be possible to remove the pulley without removing the alt, but i thought it would be easyer to take the alt out, and do it on the bench. To do this the passenager side inner guard, needs to be removed to reach mounting bolts, one at the top one underneath. To remove the pulley off the alt, you will need either a 17mm in-hex socket, or if you have the spline type you will need the special tool to do it (you can buy them). Then it just a matter of holding the shaft, I did this by putting an allen key through a hole in the alt housing, so it would hit against a solid part of the rotor (be careful its not hitting anything fragile!). Then undoing the pulley anti-clock wise. Then all you have to do is put it all back together and your done.
So I hope that this will help someone out one day, and save help some money to. Cheers Glenn
Just wanted to share some infomation I have recently learnt, after the alternator clutch pulley on my 07 D40 turbo diesel ST-X started to fail, hopefuly this might help someone in the future.
After a few water crossings labour day weekend, the alternator started to make some grinding noises, along with my scangauge showing that the alt wasn't charging and the battery light coming on. This was only at start up, and after running at higher RPM would all go back to normal. The noise was only being made while the alt wasn't charging, so that made me believe that the alt bearings were fine.
Ok so now to find a new pulley. The YD25 engine from my research has 2 differant pulleys. Early models have a 17mm hex socket on the front of the pulley, later models have a 33 tooth spline. These pulleys have the same shaft but have a differant offset. I found this out at http://http://www.precisionparts.com.au/epcat.pdf. Nissan quoted me $475 for the 17mm hex style, Precision Parts quoted me $62 for a after market Nuline version, Repco also sell these Nuline pulleys but will cost you $130.
After receiving the pulley from precision part the next day (those guys were very helpful!! and no im not connected to them in anyway haha) the next step was to change the pulley. It may be possible to remove the pulley without removing the alt, but i thought it would be easyer to take the alt out, and do it on the bench. To do this the passenager side inner guard, needs to be removed to reach mounting bolts, one at the top one underneath. To remove the pulley off the alt, you will need either a 17mm in-hex socket, or if you have the spline type you will need the special tool to do it (you can buy them). Then it just a matter of holding the shaft, I did this by putting an allen key through a hole in the alt housing, so it would hit against a solid part of the rotor (be careful its not hitting anything fragile!). Then undoing the pulley anti-clock wise. Then all you have to do is put it all back together and your done.
So I hope that this will help someone out one day, and save help some money to. Cheers Glenn
