The i30 Owners Club

HYUNDAI I30GD - CRDI 2014 - BELT IDLE PULLEYS REPLACEMENT

AVP · 2 · 337

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Offline AVP

  • 2nd Gear
  • *
    • Posts: 15

    • ro Romania

  • I30, GD, 1.4CRDI - 2014
Hello everyone!

I have some issues with the belt idle pulleys (at least one of them) - they are pretty noisy and I would like to change them. I've attached the image to show you which ones I mean. The original picture source is from this forum, an older topic.
During the yearly servicing of the car, they said that I need to change the belt and I said ok, change it. After that they said that the tensioner pulley needs replacement. I said ok, I will replace it some other time (as it seemed pretty expensive overall).
Well, because there was some grinding sound  when I accelerated the car (regardless if it's in a gear or not) I decided to change the tensioner pulley, thinking that the bearing is bad. It wasn't.
I bought the part and yesterday I went to change it myself, it took around 30 minutes. During this time, while the belt was off, I turned the idle pulley next to the tensioner pulley and it really made a nasty grinding noise, so I assumed that it actually comes from this one.
Now I ordered the other two IDLE pulleys (circled in red) so I can replace them.

Because it doesn't seem as easy as with the tensioner, in order to do it properly, I opened this topic hoping that someone more experienced can help with the following:

- How to reach the top pulley, can I reach it from beneath the car or from the top, how easy is it?
- What is the turning way to take out the bolt, clockwise or anticlockwise? not sure which direction the assembly spins, I know it should be in the opposite direction, I drew the arrows, is that the right unscrewing way or the opposite? :D
- What is the torque to tighten those screws back?
- Should I replace the screws with HEX ones instead, would it be easier to unscrew in the future and what is the size and pitch for those?
- Any other things I need to take into account?

Thanks!

  • I30 crdi, hatch, 90hp


Offline AVP

  • 2nd Gear
  • *
    • Posts: 15

    • ro Romania

  • I30, GD, 1.4CRDI - 2014
I'll answer myself:

1. from above, the top pulley can be mounted/dismounted without even de-tensioning the belt.
2. both are anticlockwise to loosen
3. probably around 50Nm, but I don't see how you can use a torque wrench in there, the space is really tight. I couldn't find a service manual for the 1.4 CRDI, U (D4FC) engine anywhere, some hints would be nice, even to buy from a reliable source.
4. It seems that hex would be more practical, but torx is still fine
5. USE an L shape tool and not a bit torx head as nothing I found can fit in there and I hadn't L shape torx key until someone borrowed it to me. I thought simple bits with some L tool would fit but whatever I tried didn't, except THIS.

  • I30 crdi, hatch, 90hp


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