I changed these belts today.
Photos of the steps:
1. Loosen alternator adjustment bolts, pivot alternator and remove alternator belt.
![](https://i.ibb.co/sWBfNzt/IMG-20221029-125815915-HDR.jpg)
2. Removed wheel and the splash guard in this photo
![](https://i.ibb.co/kGctKy0/IMG-20221030-172119084.jpg)
3. Behind the splash guard gives access to the crankshaft pulley and the tensioner pulley for the air-con belt. Adjust the highlighted bolt to loosen and remove the air-con belt.
![](https://i.ibb.co/N7bKnN7/IMG-20221030-130221832.jpg)
It's possible to access the air-con tensioning pulley without removing the splash guard in the previous step. Though it might make it harder to route the belt around the crankshaft pulley.
![](https://i.ibb.co/Ms9N1Bv/IMG-20221030-172152644.jpg)
Installation is the reverse of the above steps.
The alternator belt was 4PK890 and the air-con belt 4PK855.
The original alternator belt is made from EPDM so maybe it can go further than 100,000 km though it is only ~$20 AUD to replace.