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What lube when reassembling master cylinder for storage? 200

posted by  dbt on  Sun Oct 28 10:31 CST 2012
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last visit: Mon Oct 29 23:23 CST 2012
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I recently picked up two like-new master cylinders. One for an '80's 240 and one for a '49 International 1.5 ton truck. The one for Volvo might be an old NOS from it's appearance. The IH I'm sure is a never-used reman. I pulled the IH apart and it looks new inside. I'm thinking of doing the same with the Volvo, just to be sure it has lube inside to protect it. Then both will go on the shelf until needed. (I have 3 240's and an the IHC truck)

In the past, if I put a kit in a MC, I reassembled with liberal amounts of brake fluid, and put it back in service. NOS or reman MC's are obviously assembled with some kind of lube so it can sit in stock for uncertain lengths of time.

Anyone know what lube is used for shelf storage? Whatever was used in this IH reman worked well because I know it's been sitting for at least 10 or 15 years.

I'm reluctant to use brake fluid because, as we all talk about, it attracts moisture. So some light oil seems to be a good bet. OTH, the rubber/neoprene cup seals can't, I guess, last forever, so ultimately I may be going down a dead end road......

Dennis








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    What lube when reassembling master cylinder for storage? 200

    posted by  RicoS on  Sun Oct 28 11:15 CST 2012
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    Good question and one I have pondered myself considering the kind of damage I have seen to the hydraulics of stored vehicles.

    Unless someone can come up with a better way to go, if I redo a hydraulic component, I will first clean it thoroughly, then store it with Brake Assembly Lube inside. I have a bottle of Wagner Brake Assembly Lube which seems to be enough for a couple of lifetimes no matter how much I use it.

    Rich







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    What lube when reassembling master cylinder for storage? 200

    posted by  Onkel Udo II on  Sun Oct 28 10:45 CST 2012
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    I'd actually be tempted to use nothing for lube, vacuum bag them with silicon gel packets.

    My wife is horrified when I do it, but I use our generic vac-u-seal for stuff like this all the time. Of course, she is more horrified when I us it make sure I 100% satin penetration on dense hardwoods.







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