Author Topic: Steam Cleaner. Re-Birth of a Karcher MPDS  (Read 13451 times)

Offline awemawson

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Re: Steam Cleaner. Re-Birth of a Karcher MPDS
« Reply #25 on: April 07, 2020, 04:37:58 AM »
The last few times I've used the Karcher MPDS I've had an annoying water leak from down low, apparently from the water inlet arrangement,  certainly not high pressure as in pumped water. So the unit has been in the workshop for a few weeks waiting for me to get round to finding the problem.

So first thing this morning I at last gave it a good going over, and what did I find - a pin prick hole in a 1/4" male / male elbow. A quick look through the bits box failed to find one so a repair was called for !

A quick clean up in the cabinet grit blaster of course made the hole bigger, and I decided that a nice blob of SIF Bronze brazing rod would cure the problem and if I ended up filling the elbow with bronze it would be easy to drill it out again.

The surface tension of the bronze was in fact sufficient for it not to wick inside, and it's all now back together with Loctite 542 sealant curing as I type - perhaps now it can be evicted from the workshop to gain a bit more space !
Andrew Mawson
East Sussex

Offline Sea.dog

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Re: Steam Cleaner. Re-Birth of a Karcher MPDS
« Reply #26 on: April 07, 2020, 05:57:22 AM »
I'm not sure I'd call that a pin-prick.

The elbow has definitely seen better days judging by the thread on one side  :D

Offline AdeV

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Re: Steam Cleaner. Re-Birth of a Karcher MPDS
« Reply #27 on: April 08, 2020, 03:54:31 AM »
I'm not sure I'd call that a pin-prick.

Exactly what I was going to say!  :lol:

Makes you wonder - why do they make plumbing parts out of stuff that goes rusty in contact with water?  :loco:
Cheers!
Ade.
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Location: Wallasey, Merseyside. A long way from anywhere.
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Offline awemawson

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Re: Steam Cleaner. Re-Birth of a Karcher MPDS
« Reply #28 on: April 08, 2020, 06:57:09 AM »
In fairness it was probably galvanised when installed - but that was quite possibly 40 years ago !

This unit is a survivor from the early Cold War when 'limited battlefield nuclear weapons' were in vogue, and was intended to decontaminate vehicles in the field.

So it was probably retired from active service around 1980 but made quite a while before then.

But you are right - bronze would have been a better choice.
Andrew Mawson
East Sussex

Offline awemawson

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Re: Steam Cleaner. Re-Birth of a Karcher MPDS
« Reply #29 on: April 08, 2020, 06:59:16 AM »
I'm not sure I'd call that a pin-prick.

The elbow has definitely seen better days judging by the thread on one side  :D

It got bigger as I poked it  :clap:

Andrew Mawson
East Sussex