Woodpecker - selecting up after dropping the gear on alternate would only have raised the body gear as #4 hyd.system was inop. As I stated in a previous post I have been involved with the same problem some years ago in Sharjah - it is not really a big deal,the crew made a normal landing without any damage to the aircraft and seemed to regard it as a relatively minor issue. The biggest problem was fixing it - there were no 747 capable jacks in Sharjah so we had to fly them from Germany.The other problem was the Emerati authority who really had not the vaguest idea on how to handle things so basically stopped us from doing anything unless they had personnel to witness what we were doing which slowed things up considerably.