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Re: No Hydraulic Action
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Do old original vane pumps, if un-rebuilt till now, get noisy
as they approach replacement time?
I now know why the Hat rims became a rust problem. Some water got into the bolt pocket via the threads on the top side, but the killer was the carriage bolt head on the backside, not having full hat ring metal under it cause the square boss is too close to the edge . . .
I should have poured on the sealant more there and not worried about the squeeze out. A nornal gasket under the bolt head doesn't get flattened enough there and the squared part of the bolt shaft is right against the inside wheel side of the Hat ring -- TOO close. I should have put way more on the entire squared section of the shaft rather than my emphasis being under the head and only a partial way UP the squared shaft . . . because the bolt head has only got a thin edge of metal to squeeze against there at the edge.
A squared leather washer "might" have been good . . . contemplated it but just wanted the darned thing rolling again.
The edge of the inner side of the bolt boss isn't perfectly plane with the channel surface at each bolt so a gasket there might make leakage worse. A square, tight O-ring. :)
So driving through a creek or something would flood the channel with water mostly getting in under the overhanging bolt heads in the back.
Outside, my disks can kind of breathe and maybe that's good.
The bolts are encircled with compressed oiled leather between disk and hat ring.
The leathers on the up side also keep the flat washers from rust-welding themselves to the disk.
But also on the top side the bolt is too close to the edge as you can see, but at least there, there is a way better shoulder for the leather to get squeezed against at the edge -- not so with the bottom edge -- I mean the channel's edge on the in-side of the wheel.
Service procedure for hat rims
Thoroughly clean the overhanging bolt head area with alcohol or something that won't harm the paint, and give them a generous hit of sealant . . . under the lip.
And surround the bolt head if there is no sealant under the heads at all.
I'd rather do all that or something like it
than drill holes to let trapped water out. :)
If I can keep it bone dry in there, that present rust won't get worse.
Anyway, enough rambling,
This post was edited by Tall T at 01:06:28 08/08/14 3 times.
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