I'm busy attending to little tasks at the front of my MkII BT7 while the
front grille surround is away being fixed up.
So....I've had a periodic and puzzling leak from my radiator for some time.
Just a little now and then. Not from the overflow tube. I put the radiator
on the bench today and looked closely at it.
1) The bolt/cap that is only visible when the radiator is out had signs of
slight leakage. I undid it and found that the washer inside (rubber/cork
amalgam of some fifties ****) had disintegrated so I made a new, covered the
thread with PTFE tape and tightened it up. (This bolt/cap is on the bottom
surface of the top tank on the side that bulges out over the finned cooling
section....if you see what I mean!)
2) The drain tap at the bottom was the main culprit. It seems that the
spring had rusted and collapsed so that the tap could work (a tiny
bit)loose. I've taken the tap apart and will hopefully be able to replace
the spring with a section of a spring from my "grotty old springs which will
be useful one day collection".
So, if you have a periodic radiator leak that baffles most of the collective
wisdom and past advice, it might - just - be one of the two failings, above.
Simon
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