Spitfire1974 » Restoration » Brakes » PDWA

email Dave Braun at dave@dbraun99.com (click here)

The PDWA changed from the style that was pretty much rebuildable and had imperial fittings to one that was metric fittings with a single removable end and a single shuttle. The change over took place in 1976. The bodies were aluminum, the switches actually had to close to make contact, rather than just contact the shuttle as on MGs.

eBay 5 dollar PDWA dismantle (1)	eBay 5 dollar PDWA dismantle (2)	eBay 5 dollar PDWA dismantle (3)	eBay 5 dollar PDWA dismantle (5)	PDWA polished
End plugs and annealed copper washers	Ball for shuttle trip	Strange spring inside device	Plunger and grounding coil	Completed pre 1976 PDWA
Internal corrossion on 1976 and after PDWA required cleaning up.	1976 and after device with the metric threads and rounded end. Showing the shuttle cock movement	1976 and after PDWA note rounded end metric threads (3)	The 1976 and after PDWA is shown for selling on the web, and also to demonstrate the difference between the two. I will be sticking with the all Imperial pre 1976 device.	Trimming 2mm oring material to fit
Home made oring	two original square rings and five of seven attempts

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