Hi, I own a 1989 740 GLE with the 16 Valve (B234F) engine. With this engine, how often should the timming belt be changed? Also is there anything else that should be changed at the same time as the timming belt? I love this engine and want to keep it running well. I know a timming belt braking on the 740 16 Valve can cause a lot of damage, I don't want that to happen. Peter. Sydney, Australia. 1989 Volvo 740 16 Valve 1986 Volvo 740 Turbo 1982 Volvo 240 GLE