G500 V8 4.0 M176 Ribbed belt

Who of you has ever changed the triangular belts of generator and air compressor/servo pump with the G500 with 4.0 V8 M176 engine (2015-18) ? I wanted to look at the condition of the two belts, but even that didn’t look so easy. From above you can see nothing, only sideways and from below you can see a bit of the belt. Whether you really have to dismantle the entire front and cooler package in order to change straps, tensioning and turning roller ? I have really found nothing on the Internet. G-russ Dennis