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MG Midget and Sprite Technical - Crank spigot bush
|Advice please: Replacing gearbox, clutch and crank spigot bush on my 1100 engine. Does the first motion shaft run "dry" in the spigot bearing or should there be a small amount of lubricant? - grease? oil? what?|
|the spigot bush is porous and should be pre-lubed by heating immersed n oil before fitting. No further lubricant|
|They should come pre-lubricated but if they have been sitting for a while some can weep out. Various ways have been mentioned to get more lube back in such as filling the centre and pressing a finger down on the top to produce pressure to force the oil into the pores.|
|I store them in oil|
|How about dropping the bearing into the bottom of an (empty) wine bottle, adding enough oil to cover it, then using a Vacu Vin pump to reduce the pressure and draw out any air from the pores (which will then be replace by oil)? |
Of course, the only drawback with this is that you might have to drink a bottle of wine first, and it would be best to select one that comes in a clear bottle.
That's basically what they do in production from what I understand, they place the bushes in a vacuum chamber, evacuate it , then flood it with oil to fill the pores.
|I like Jonathan's response best of all!!!|
Thank you everyone for your replies
|Hope you enjoy the wine!|
I've no idea whether a Vacu Vin will really pull sufficient vacuum to evacuate the air from the pores, but it would be interesting to hear how you get on if you try this.
|I have never seen one pre lubricated and I have fitted 100s!|
Place the bush on one thumb so it balances upright - fill the bush with oil to the top - place other thumb on top of the bush and squeeze - you will see the oil seep out of the pores.
Takes longer to write this than it does to do it!
|Chris at Octarine Services|
This thread was discussed between 14/04/2017 and 15/04/2017
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