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rear bronze bush
Posted: Sun Jul 20, 2008 7:08 pm
by aupickup
how do you get the bronze bush out of the rear of the crank shaft
Posted: Sun Jul 20, 2008 7:24 pm
by wanderinstar
Drill it out? Alternativly get a bolt or something that is a very close fit, fill spigot hole with grease and fit the bolt in the bearing. Wallop with a big hammer. With any luck the bearing will shoot out.
Posted: Sun Jul 20, 2008 7:48 pm
by 8009STEVE
Same as above but using plasticene.
Posted: Sun Jul 20, 2008 8:22 pm
by alex_holden
The grease method worked for me on the first one I did (with difficulty) but not on the second one. I wound up breaking it up with a small chisel instead - the metal is quite soft and brittle.
Posted: Sun Jul 20, 2008 8:56 pm
by paulk
If anything like the bronze bush on the relay shaft, it's so soft you can rip it to bits with pliers and a small screwdriver.
Posted: Sun Jul 20, 2008 9:01 pm
by aupickup
thanks guys will give it a go tom eve
Posted: Sun Jul 20, 2008 9:02 pm
by aupickup
do i need to leave the new bush in oil before putting it in
Posted: Sun Jul 20, 2008 9:28 pm
by chrisd87
I used a corkscrew to get it out when I needed too. As others have said the metal is very soft so it isn't difficult.
Posted: Sun Jul 20, 2008 10:05 pm
by MoggyTech
aupickup wrote:do i need to leave the new bush in oil before putting it in
Yes, soak it in heavy oil for 24 hours before fitting, or it will fail quickly.
Posted: Sun Jul 20, 2008 10:06 pm
by bmcecosse
Yes - new bush is 'oilite' - and should be soaked in oil (some say HOT oil) for 24 hours before fitting.
Posted: Sun Jul 20, 2008 10:12 pm
by alex_holden
Oilite bushes are impregnated with oil during the manufacturing process.
From their website: "The standard stock range of Oilite bearings is impregnated with a mineral oil SAE 30 viscosity; all machined Oilite bearings and plates are supplied fully impregnated after machining."
It shouldn't do any harm to soak them again but I doubt it will have any effect.
Posted: Sun Jul 20, 2008 10:14 pm
by bmcecosse
Yes - but should be refreshed before use.
Posted: Sun Jul 20, 2008 10:19 pm
by MoggyTech
alex_holden wrote:Oilite bushes are impregnated with oil during the manufacturing process.
From their website: "The standard stock range of Oilite bearings is impregnated with a mineral oil SAE 30 viscosity; all machined Oilite bearings and plates are supplied fully impregnated after machining."
It shouldn't do any harm to soak them again but I doubt it will have any effect.
I didn't know that

Good to know though.
Posted: Sun Jul 20, 2008 11:26 pm
by bigginger
bmcecosse wrote:Yes - but should be refreshed before use.
This was certainly true in the past, but maybe things have changed. (NB I don't *know*, just guessing) You'd think they'd mention the need to soak them on their site though
Posted: Mon Jul 21, 2008 6:17 am
by MoggyTech
If in doubt... No harm soaking in engine oil, just in case and all that

Posted: Mon Jul 21, 2008 6:23 am
by bmcecosse
The bearing you buy from a Minor spares place may not be a genuine 'Oilite' - and even if it is - it may be 30 years old !
Posted: Mon Jul 21, 2008 2:03 pm
by Kevin
Alternatively get a bolt or something that is a very close fit,
With all your spares Dennis dont you have a spare 1st motion shaft its the ideal size and is a good clutch aligning tool as well.
Posted: Mon Jul 21, 2008 6:16 pm
by aupickup
ah yes kev good idea
Posted: Mon Jul 21, 2008 9:53 pm
by les
If in doubt... No harm soaking in engine oil, just in case and all that
I'm with that man!
ps; An appropriate size tap screwed in will extract the bush, M12 for examle.
Posted: Mon Jul 21, 2008 9:56 pm
by aupickup
thanks guys
