Andrew
Yes the pcv valve can be unscrewed. It has a piston (valve) and a spring in it. back then , there were all the same. Note the arrow on the body showing flow direction.
The cooler bypass cap is soldered on. underneath is a screw plug that loads the spring against the ball. this is adjustable.
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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