Thanks for the updates, I think tomorrow I’ll give it a whirl and see if I can somehow get to the grill screws to get them off but it’s looking like a right ball ache and tbh, I might just cut the thing off, I won’t be using it anyway as it’s completely rusted.Yes the small upper grille is held on with two nuts on the inside of the cab (bugger to get to) From what I remember the grille should then gently prise off to reveal a few countersunk screws that hold the heater box onto the front panel, not sure if there are any other fixing inside the cab but if there are they will require contortions to get to.
Thanks for the offer will have to let you know a little further down the line. Im thinking of fitting a completely different heating system in it so probably won’t need it, fixing all the leaks in the roof over the coming days, only got about 4 small holes and a bit in the guttering so once that’s all done the new woodwork box framing will begin! Exciting summer for meIf you need another heater flap. I've got a spare one that's in significantly better condition that I'm willing to sell. Just needs a small repair at the bottom and the hinge lubricating