Aircon compressor or belt problem

[Kano]

Hi, I wasn't sure which category to put this under but hopefully someone might be able to help me.

I have a 1999 GU 2.8L TD Patrol.

Every now and then I hear a screech coming from the front left of the patrol when the aircon is on.
I thought it might be a belt. I had a look at them and they seemed ok, maybe a little loose but the teeth are ok.
Underneath the aircon compressor and engine looks wet/oily. Photos attached.

The patrol is taking longer to start in the mornings now to.

I'm still learning so I'm sorry if I haven't described it to well. I have added two photos to help.
I hope someone might be able to point me in the right direction into fixing this.

Thanks

[happygu]

How loose is the belt ...... a V-Belt should be kept fairly well tensioned. A screech on start up could mean that the belt is slipping against one of the pulleys when the ac compressor turns on, and puts some resistance on the belt

[Kano]

Hi happygu. The screech only happens every now and then when driving. When I push down on the belts they do move abit so maybe they are to loose. I'll tighten the belts today and see if that was the problem.

[GQ TANK]

could also be an issue with the idler pully (tensioning)

[threedogs]

I'd be tightening your belts as per the manual, or even take it off and spin the tensioner pulley.
It would be one or the other IMO