Dismantling a Thetford C403L toilet on a Hymer Exsis

[Velocette]

I believe I have a split water pipe on the toilet
Can anyone help by suggestions on how I dismantle the toilet plastic panels to gain access to the pipe work and pump

 

[Jake vE]

I don't have the same toilet but looking at the installation instructions and spare parts list attached you might have to take the unit out and then try and split it apart. Is the leak within the toilet unit or is it the feed to it?