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Z Oil pressure switches

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PAULJAC47
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Z Oil pressure switches

#1 PostAuthor: PAULJAC47 » Sun Dec 04, 2016 5:13 pm

Any Advice here,Are all z type pressure switches the same,Z1b switch today could only get indicator lamp on by shorting wire to frame,couldnt get contituity through switch to engine,took switch out contact on bottom looks clean but spring felt weak,put one in from a4 project,same but spring felt stronger still no continuity,only one i can get reading is from a2 project.All look the same to me and dead simple how they operate,i know oil is getting round as sight glass is emptying when i kick her over.Oil has been drained and fresh oil and filter.seem to remember somewhere about a small hole needing to be in the bottom plate as a relief hole?
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#2 PostAuthor: z1bman » Sun Dec 04, 2016 5:21 pm

put a thin washer behind the contact plate
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#3 PostAuthor: PAULJAC47 » Sun Dec 04, 2016 5:23 pm

Thanks for That,is this to compensate for spring wear?
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."

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#4 PostAuthor: Ginger Bear » Sun Dec 04, 2016 5:37 pm

Hole mod is all detailed here; http://www.z1ownersclub.co.uk/forum/vie ... hp?t=32321

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#5 PostAuthor: PAULJAC47 » Sun Dec 04, 2016 5:40 pm

Yes Steve thats what i remember,will look at all these switches to see if the hole exists..Cheers Paul J
PAULJAC47,,,,,"She may not look like much, but she's got it where it counts, kid."

-Han Solo



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Salad is what real food eats.

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#6 PostAuthor: z1bman » Sun Dec 04, 2016 7:06 pm

thin washer will cure the problem
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