To quote a verse from a song wot I wrote at the time: (to the tune of Greensleeves)
Three orange lights, pumps OFF at the rush
Christ we're stuck four days with an hydraulic flush
But we carry four boxes and two rubber wheels
A green towing arm . . . and all the wrong seals
Does that scenario ring any bells?
Yes the Vickers pumps had the thermo run-round (designed to prevent pump damage when isolated), but wasn't all it was cracked up to be (pun intended).
Happy days . . .