Hello!
I have a XM Break with the V6, manual gear. Have had a couple of CX:s before, and am familiar with the hydraulic system.
Now, for a time, the belt to the hydraulic pump has been screeching (correct word?) now and then. Piece of cake I thougt, just do a little tensioning of the belt and it will be ok.
But - how do I do it on this vehicle?
XM feels like a lot more modern construction than the CX. So it is not just to loosen a nut, tension the belt, and fix the nut again on a XM.
I have studied Haynes, and it isn't of much help on the V6.
So, I looked in the engine room and took som photographs to try to figure it out. Think I have now, but would like to hear if anyone of you has done this and I have understood it right.

The first two pictures shows the pump, on the top of the engine, seen from the left side of the car:


Then, views from the top and backside of the pump, from the left side of the car:


And finally what I think would be the adjustment nut, and a picture from Haynes applicable for XM with other engines:


So, if I loosen the nut A, and a little also on the bigger nut C that holds the pump assembly, and then turn the nut B I would be able to tension the belt I think.
- Any advice or experiences to share before I start?

Added: Studied the parts catalouge, and found this picture. Seems i'm on the right track. Now it is just to do it...
(The nut A is left out in this drawing, but the nut B is nr 3.)

That certainly looks like the way to do it, although I don't see why you should need to loosen the pump nut "C".

Where's Paul when you need him?

Nice pictures, by the way.

Derek

Hi,
the pump you have looks like one I had on a 2.1td, your approach seems right, but you should see if the tension seems right as is, if it is you may need a new belt. As I remember, some belts are larger, giving a bigger V and more width at the top, some of the pattern ones just sink into the V of the pulleys instead of sitting at the top.
all the best,
Dod.

Testing the memory here, but here goes...

Loosen A a little so it will pivot. Then you need to get B to turn to tension. I have a little cheapie ratchet tool I bought at a bargain tools place once that allows me to fit a hex key and get into the space available to turn the tensioner up.

Good luck is my other advice.

And so it's done! I didn´t need a new belt, the old one looked ok.
- It wasn't that hard to do after all, even if it is a tight place. There is room first to loosen the lock nut only 1/8 at at time, then the same with a small allen key on the adjustment nut. But nothing was seized, and the whole operation didn't take more than 5-10 minutes.
- Thanks for advice! Now there is no more skreech from the belt!
(It was a bit greasy around the place as you can see on the pictures, so I also tightened the outgoing tube from the pump 1/8, that was until tight fit. My experience is that theese seals on the hydraulic system needs a bit of re-tightening after some years.)