rear bronze bush

Post by **aupickup** » Sun Jul 20, 2008 7:08 pm

how do you get the bronze bush out of the rear of the crank shaft

Post by **wanderinstar** » Sun Jul 20, 2008 7:24 pm

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.

Post by **8009STEVE** » Sun Jul 20, 2008 7:48 pm

Same as above but using plasticene.

Post by **alex_holden** » Sun Jul 20, 2008 8:22 pm

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.

Post by **paulk** » Sun Jul 20, 2008 8:56 pm

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.

Post by **aupickup** » Sun Jul 20, 2008 9:01 pm

thanks guys will give it a go tom eve

Post by **aupickup** » Sun Jul 20, 2008 9:02 pm

do i need to leave the new bush in oil before putting it in

Post by **chrisd87** » Sun Jul 20, 2008 9:28 pm

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.

Post by **MoggyTech** » Sun Jul 20, 2008 10:05 pm

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.

Post by **bmcecosse** » Sun Jul 20, 2008 10:06 pm

Yes - new bush is 'oilite' - and should be soaked in oil (some say HOT oil) for 24 hours before fitting.

Post by **alex_holden** » Sun Jul 20, 2008 10:12 pm

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.

Post by **bmcecosse** » Sun Jul 20, 2008 10:14 pm

Yes - but should be refreshed before use.

Post by **MoggyTech** » Sun Jul 20, 2008 10:19 pm

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.

Post by **bigginger** » Sun Jul 20, 2008 11:26 pm

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

Post by **MoggyTech** » Mon Jul 21, 2008 6:17 am

If in doubt... No harm soaking in engine oil, just in case and all that

Post by **bmcecosse** » Mon Jul 21, 2008 6:23 am

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 !

Post by **Kevin** » Mon Jul 21, 2008 2:03 pm

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.

Post by **aupickup** » Mon Jul 21, 2008 6:16 pm

ah yes kev good idea

Post by **les** » Mon Jul 21, 2008 9:53 pm

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.

Post by **aupickup** » Mon Jul 21, 2008 9:56 pm

thanks guys