Hydraulic Unit: Removal
WARNING: This page is about a different car, the 1996 Mercedes-Benz E320, 1996 Mercedes-Benz E300, 1995 Mercedes-Benz E420, 1995 Mercedes-Benz E320, and 1995 Mercedes-Benz E300. However, it is still accessible from the selected car via links, so may be relevant.
With ignition off, disconnect negative battery cable. Remove hydraulic unit lines, and plug openings. Remove hydraulic unit mounting bolt and cover. Detach pump motor ground strap. Remove 12-pin plug socket. Remove mounting nuts and hydraulic unit.
CAUTION:
DO NOT loosen sealed center bolt or 2 hex socket bolts next to cover and brakelines.