Well after much twoing and frowing thanks to the wonderful British weather here it is:
1. Remove the plastic screw and fastener that holds the plastic shield to the old air box:
2. Also remove the two plastic 'nuts' from the left side of the shield. Then lift it away from the atatched threaded pins. Reach to the bottom of the shield and lift it off the threaded lugs (no nuts though!). You should find at this point you can lift and manoeuvre it out of the bonnet area now, leaving the area bare:
3. Now you can access the front, easiest to get at nut of the air box (it has a screw head on it or at least mine did!). I used a handy little tool I got from Lidl:
4. Unfortunately the F was either put together by miniature people, or there was no thought whatsoever on how the box would be removed to replace the seal!. You therefore have to move the brake servo and master unit out of the way. So first REMOVE the top nuts:
5. Just LOOSEN the lower nuts very slightly and then pull the whole servo unit towards you (watch the brake pipes - they should be fine with a small flexing):
6. You can then get normal sized hands into the unbelievably awkward area of the other front nut:
7. Next on the inside of the car remove the glove-box. It is done by loosening the two screws at the bottom of the glove-box door, and then removing the two upper screws found by opening it (they are black and at either side of the plastic edge). Remove the switch and bulb wires (label them too just in case!).
8. You can now access the underneath of the air intake box. I have a half installed air-con unit but luckily even with this in place you can just about get to the 2 screws that hold the rear of the box (I replaced one of mine with a normal screw previously as you can see circled):
9. Theoretically you can then go back under the bonnet and simply pull the air box off the seal and move it away. I however had a box that had previously been 'fixed' with gallons of silicone sealant! I used a cake spatula to slide under it and finally get it off:
10. Next clear up the area where your new seal will sit (the wooden bit you can see is there to hold the air-con box in shape as it is so cheap and nasty it flexes inwards!):
11. Once its all nice and clean and dry put an even bead of silicone (or frame sealant) around the edge of the hold in the bulkhead, and also on the air intake box seal (I used white so you can see it better but I would suggest clear or black!):
12. Place the air intake gently on the bulkhead area, and then use some nice new bolts, or threaded screws, and washers to secure the box in place:
13. Finally push the servo back in place and tighten the lower nuts, then replace the top ones. Put the plastic shield back in place and secure with the two plastic nuts and the top plastic screw and fastener (this is a bit further back than it was so make sure it seats in the sir intake box properly:
EH VOILÀ!