Re: 1999 scenic
Not sure if your car has AC but to release the alternator you have to loosen the small adjuster nut, undo the 13mm clamp bolt beneath the adjuster and loosen the alternator pivot bolt which is the long bolt behind the alternator. Worth removing the timing belt covers to remove any hidden debris and turn the engine over by hand before starting as the debris may have caused the timing belt to jump a tooth.
Currently in wyn burgess's garage:
2000 Scenic 1.9 Dti. 1999 Clio 1.2 best car, 807 2.2, 1971 Triumph T25 T/B