Spare Crankshaft Spigot Bearing for Speed6 AJP8?

[FarmyardPants]

How about tapping a thread, wind in a bolt and use a slide hammer/whatever there's space for?

[Jonbouy]

You could always try hydraulicing it out? Pack the hole with grease, find a punch that fits the hole perfectly, then wack the punch which will hope make the grease force the race out

[ukkid35]

Jonbouy said:

You could always try hydraulicing it out? Pack the hole with grease, find a punch that fits the hole perfectly, then wack the punch which will hope make the grease force the race out

I doubt that would work because there's no significant surface area for the hydraulic fluid to act upon. You use a small brake master piston to exert a large force on a large caliper piston area, but moving the caliper pistons a short distance. Here the master piston area would be much much greater than the tiny surface area of the bearing shell remnants, so the necessary leverage would be missing. If removing an intact roller bearing (rather than needle bearing) then the surface area ratios would mean much more leverage.

[Twinkam]

ukkid35 said:

Jonbouy said:

You could always try hydraulicing it out? Pack the hole with grease, find a punch that fits the hole perfectly, then wack the punch which will hope make the grease force the race out

I doubt that would work because there's no significant surface area for the hydraulic fluid to act upon. You use a small brake master piston to exert a large force on a large caliper piston area, but moving the caliper pistons a short distance. Here the master piston area would be much much greater than the tiny surface area of the bearing shell remnants, so the necessary leverage would be missing. If removing an intact roller bearing (rather than needle bearing) then the surface area ratios would mean much more leverage.

Oh it works! Key is the fit of the punch. And the energy behind the thwack. Wear goggles.

[sheel]

As an engineer of over 30 years experience you have been given a couple of good bits of advice on here,by your own admission some of this is out of your remit and it may pay you to give further consideration to suggestions
Hydraulic action if the correct sized piston is used together with a viscous material will generally work well Well packed and short sharp whack
Alternatively small die grinder ,carefully grind a groove down one side to form a relief and then crack the shell with a punch

It's careful surgery but gently gently catch the monkey
Rich

[gruffalo]

Paul, I have a spare crank if that would help.

[glenrobbo]

ukkid35,
Scroll down to the first valiant attempt. You need one of those!

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

HTH

[Byker28i]

Multispline extractors? I have a set of different sizes similar to this one
http://www.irwin.com/tools/screw-bolt-extractors/h...

[ukkid35]

phillpot said:

Happy to lend it out, all I ask is you cover all postage costs. Can be in the post tomorrow if you let me have your address?

Huge thank you to phillpot, but first I tried a cheap eBay 'Blind Hole Inner Bearing Puller' and it worked eventually, wasn't quick or easy though. Nevertheless I was very grateful for the backup option that phillpot provided.