here is the E34 owners manual, https://archive.org/details/BMWE34Manual flip to page or download it
service manual book, 459 pages, e34 BMW 5 series 1989-1995 pdf , 61.14 MB for download http://www.bmwclub.by/book/e34/BMW-5...-1989-1995.pdf download is very slow, takes more than 45 minutes