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PowerBook 140 - lubricate hinges?

JC8080

Well-known member
I have my PB 140 apart to recap the screen. I'm tempted to put some oil on the shaft that the hinges ride on, but I'm wondering if that might loosen things too much and cause the display to not stay open. It looks like there is some original grease that has dried up a bit over the years, so I'm thinking the hinges might be stiffer than they should be. Does anyone have any experience with this?
 
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