While you wait for answers, we may have found some information which could help you.
Click here for Lights Full Mainmercedes 814 breaking system change?
mercedes 814 vario 1998 ?
Adjusting rear brake pads on Mercedes 814 1995 (drum brakes) ?
cant tilt cab on merecedes atego 815?
Mercedes horsebox 1986 won't start??
Bleeding the fuel system on Meredes 814?