Spigot bush

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Propshaft
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Spigot bush

Postby Propshaft » Sat Nov 09, 2019 7:11 am

The bush that fits in the fly wheel to take the first motion spigot .mine looks good with no visible wear it is a nice fit on the shaft but you can push it in with your finger into the fly wheel ( but not a sloppy fit) is it ok to secure this with thread / bearing lock or should I just get a new one

philthehill
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Re: Spigot bush

Postby philthehill » Sat Nov 09, 2019 8:07 am

The spigot bush fits into the rear of the crankshaft not the flywheel.

If you can push it in and out with little effort it is time to get a new bush.

https://www.ebay.co.uk/itm/CRANKSHAFT-S ... 3b39972627

I have just stripped a 948cc engine and the spigot bush was so worn that when I upended the engine the spigot bush just fell out.


Propshaft
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Re: Spigot bush

Postby Propshaft » Sat Nov 09, 2019 8:31 am

Thanks for your reply yes crankshaft not fly wheel

philthehill
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Re: Spigot bush

Postby philthehill » Sat Nov 09, 2019 9:03 am

The bush is formed from a oil retaining material 'Oilite' and is not brass or similar.
The bush will benefit from being soaked in engine oil overnight before fitting.


jagnut66
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Re: Spigot bush

Postby jagnut66 » Sat Nov 09, 2019 9:57 am

The bush is formed from a oil retaining material 'Oilite' and is not brass or similar.
The bush will benefit from being soaked in engine oil overnight before fitting.
That was something I didn't know, so duly noted Phil.
Best wishes,
Mike.
(Still missing) Olwyn Image

oliver90owner
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Re: Spigot bush

Postby oliver90owner » Sat Nov 09, 2019 10:37 am

I short-circuit the soaking process - I have a bag of quite old porous items. I submerge the item in lube and exhaust the air above with my high vacuum pump. Any air is soon expanded from the pores and lube replaces same when returning to atmospheric pressure. I expect heating and cooling, while submerged in lubricant, will also speed up the process.

New oilite bearings are, of course, impregnated with lube at manufacture.

Vacuum pump was not sourced for this specific purpose, of course (another use is de-gassing wines to speed up the clearing process, for example. :D).

philthehill
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Re: Spigot bush

Postby philthehill » Sat Nov 09, 2019 12:55 pm

oliver90owner
You are correct in that the oilite bearing should be impregnated with oil at manufacture but there are oilite bushes and oilite bushes and it is better to be safe in the knowledge that the spigot bush is well oiled.

https://en.wikipedia.org/wiki/Oilite



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