Alternator replacement on Cat C7, Freightliner XC chassis

I'm not familiar with the alternator on your Cat engine, but many use a voltage regulator. Some are internal and some are external. You need someone else to come on here who is familiar with Cat and can tell you if the regulator is accessible.

I believe "Trackig" meant that someone was under the coach, assisting in the routing of the engine belt while someone inside was installing it.