Why are you removing the front panel. You only need to remove the top. Watch the video.
Go to;http://www.espares.co.uk/advice/washing-machines/a/7/1408/how-to-replace-the-inlet-valve-on-a-washer-dr.html
Some machines have a 2 hidden top securing screws behind a small oval plastic blank about 7 inches from the front . When removed the top sides backwards
GB in Wales, February 2013