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Hi pump playing up , given it a tap then ok , will it be the points or a new unit ? Any tips for removing and refitting
Any body running Facet type pumps pros And cons please Thanks Regards Doug
I recently got fed up with our original pump sticking and which was getting worse. Whilst I think they can be reconditioned, I went for one of these solid state pumps ;
Doug. Check the pump inertia cut-out switch first (The grey tube by the fuse box). If the contacts inside are a bit corroded, and they will be unless they have been cleaned in the last 40 years, they will stop the pump working properly, and probably have the same effect on the new one you are thinking of fitting.
Mike.
You need to take the inertia switch apart and clean the internal contacts. If you search on here you should find picture of one disassembled. There is nothing tricky inside.
Dave
1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.
If it was "up" and the pump wasnt working and when you pushed it down the pump did work then the inertia switch is working fine..... It does exactly that... stop the pump when its up run the pump when its down
The "plunger" has a copper or brass ring on it and there are two mating copper or brass strips each side that connect to the two wires on the outside.
When the plunger is "up" the copper ring is out of the contacts and when it is down the copper ring gets pushed between the two strips. If you push it up and down a few times the contact points and ring will get cleaned.... or you can take it apart as Dave has said.
The chances are the ball that is in there will be a bit rusty too. You can clean that but there is no need to polish it. It just works as a "knocking" device to knock the plunger up if there is enough vertical inertia. There is also a magnet at the bottom which holds the ball in place in normal running conditions. A clean surface works better against the magnet but a polished surface doesnt add anything (It would have been polished originally by default as it is just a ball bearing)
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