the hole in the internal plate is 8mm, plus the screwdriver is quite strong and long enough to give you good leverage

To check whether it's the cap or the h/brake switch, simply disconnect one of the wires to the reservoir cap and see if the fault persists. If it does, above the gearbox is a black rubber connector where the h/b switch wire connects to the main harness(you'll see the wire coming through the...

to fit the plain screen brackets, not the hinge type, the best way to fit them is this. Firstly you need a no.3 philips screwdriver with an 8mm dia. shaft(honestly!), if you're on your own, some kind of battery gun, or a mate with ratchet & socket. Fit the top bolt into the screen bracket, nip...

Scotia911 is correct, the whole vehicle is 24v. Seem to remember that the wheel bearings may have been uprated. Alternators may have extra shielding on them to prevent water ingress. Uprated Radius arm bushes. If still equipped with original towing gear it would be pintle with military elecs...