Author Topic: Lucas PLC5 switch  (Read 926 times)

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Offline Paule

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Lucas PLC5 switch
« on: February 02, 2017, 01:21:32 pm »
Hi all,

Answering Ron's question about PLC5 switch... here's some pics showing the internals.

It is opened by turning the brass top lid in clockwise order looking from top, about half an inch (the top lid will fit onto the housing in one position only). There's a strong spring in there, so make sure to hold it securely. There are two discs in there, which are operated by the light knob, one to isolate (& protect & take spring load) and one to carry the contacts. Onto these discs, the light knob will only fit in one position.

The ignition switch consists of the parts on top of the first two pics. The small "wings" at the bottom of the chrome plated part can break off easily, be careful!

Pic three and four show the bajonet fitting of the lid to the housing.

Before assembling, make sure you've got all parts in the right position. I've managed best by doing first attempt without the big spring, and adding that spring in the next attempt.

In my opininon it is impossible to turn around the light knob, as the top cover and the light knob can only be placed in one position.

Hope this helps!   Paul

Offline Adam_R

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Re: Lucas PLC5 switch
« Reply #1 on: February 02, 2017, 09:28:52 pm »
i would like to add thats its also not straightforward to turn the knob round on the replica ones, hence why i didnt do it