Happijack broke !

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Happijack broke !

Postby Mike » 01 Sep 2017 20:20

Annoying as the jack broke just as we were loading to go to Scotland for a two week trip, tried to get appart but it's beaten me and I don't have time to do much with it this evening, so probably looking at a new one. Doh.
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Re: Happijack broke !

Postby zildjian » 01 Sep 2017 20:38

Oh dear Mike, that sort of thing usually happens to me as i'm getting ready to go, whats busted or not happening?
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Re: Happijack broke !

Postby Mike » 01 Sep 2017 21:13

The inner leg isn't moving the motor turns etc and I can pull the leg in and out so something in the drive, threadded part has bust I think, just emailed happijack for advice and will call niche I the morning session if they have one to sell. Could pop in on our way back from Scotland maybe
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Re: Happijack broke !

Postby zildjian » 01 Sep 2017 21:26

Might only be a roll pin that locates motor drive>inner leg

pin passes through corresponding holes in both pieces and is sprung open slightly to pinch the two, they get old and either drop out or get shredded sometimes

I nearly bought a set of HJ off ebay last month as well
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Re: Happijack broke !

Postby Mike » 01 Sep 2017 22:08

Well happijack got back on e mail within an hour and said
It appears that the acme nut is no longer working with the drive screw. Over time, they sometimes get small particles of corrosion or something that gets embedded with the grease, and it eventually grinds away the threads on the nut. That mechanism is sealed inside the leg and is not repairable. Your option is to replace with model 4160 (direct replacement), our part #308169.

Hmm so it seems like they want to sell new rather than repair.
Last edited by Mike on 02 Sep 2017 08:41, edited 1 time in total.
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Location: near Yeovil
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Re: Happijack broke !

Postby zildjian » 01 Sep 2017 22:47

Guess you can't manage with it so a new one and repair if possible your existing perhaps, TBH I can quite see the grease trapping debris
on other jacks I'm not convinced using a torquey drill is a great idea given the cost
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Re: Happijack broke !

Postby Big Jim » 02 Sep 2017 18:52

The nut on my jack failed . I got it apart with some difficulty . The nut is a "special" made from what looks like Nylon . I did enquire about having them remade in bronze , but it didn't really add up . The legs from USA are not a bad price but with shipping and VAT it is not much different from Niche .
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Re: Happijack broke !

Postby wonkywheel » 02 Sep 2017 19:39

Accrugroup supply various lead screws and nuts
https://www.accu.co.uk
They might have something that fits.
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