[diesel_mercedes] Re: JB Weld repair of pitted aluminum

That's pretty good ! .

I had the same problem and it took me quite a while before I found
good used alloy bits to replace my heavily corroded ones with .

-Nate
Rich wrote:
>
> I keep forgetting to write about this.
>
> Many months ago, I replaced some radiator hoses, including the
short
> stubby bypass hose that goes from the water pump to the thermostat
> housing. Some months later, it began to seep a little...just a few
> drops over night. I tighened the clamps a little and the seepage
> increased. The seepage was out the end of the hose, where you can
> see the reinforcement threads.
>
> So I disassembled to have a look see.
>
> The housing stubs where the hoses connect were very pitted,
> including one pinhole all the way through. This one was not the
> leaker. My guess is that where the bypass hose was pressed into a
> pit by clamping pressure, the inner rubber layer was cut.
>
> I cleaned the parts with brake cleaner and filled all the pits I
> could find with JB Weld, reasoning that I could just replace the
> parts for $$ or try the repair and if it doesnt' work and I still
> have to replace the parts, I'm no worse off except for spending a
> little time.
>
> JB Weld stays tacky for quite a while. I had another car running
at
> the time, so I let it set for 2 weeks. Then I filed and sanded it
> smooth and reassembled. It looked pretty good, smooth and dry with
> no tackyness. Of course, the proof of that will be next
> disassembly. See if the JB stays, or comes off with the hose...but
> that's for another day.
>
> It has been leakfree for about a month now.
>

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