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#1
07-19-2003, 04:00 PM
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Mitty Vac problem
My mitty vac seems to have a leak down problem. I got it from Harbor Freight (its the metal one) less than a year ago and was wondering if anyone has opened one up or fixed one. I usually pump down to 15 or 20 hg which shouldn't strain its little innards too much?? I almost went through the hassle of pulling an unlock line out which woulda really been fun. Tracing a leak with a leaky mitty vac is not working
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 1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" 
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#3
07-19-2003, 06:11 PM
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There's a rebuild kit for the mity-vac, but I don't know whether Harbor Freight carries it.
Wes
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#4
07-19-2003, 07:03 PM
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Wes
I have got lots of stuff from them but never had to return anything, of course I lost the receipt. Maybe I,l take a run down to their store Monday and whine and at LEAST see about the rebuild kit,.. thanks Joe Steve
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#5
07-19-2003, 07:08 PM
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I seem to recall there was a discussion about a year ago where somebody located the source of the leak and came up with a simple repair. Might be worth a quick search.
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Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE
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#6
07-19-2003, 07:10 PM
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Stevo
Harbor Freight is pretty darned good about customer service. If they don't have the rebuild kit or won't replace the Mity-Vac, Eastwood has the rebuild kit. Their part number 46004G. Costs about $15.00. www.eastwoodcompany.com. Cheers, Wes
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#7
07-20-2003, 02:38 AM
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use a mighty vac to trace leaks in a might vac????? hummmmmm
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matt
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#8
07-21-2003, 12:21 PM
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You probably just have some contaminants in the diaphragm.
This can happen while testing unclean areas around the engine. This happened to me too, and I used a cigarette filter to filter the vacuum. I inserted the filter into the clear PVC tube that came with the unit, and then reduced down to the adapter. I have not had a problem since. If you want, I can e-mail you a pic. Robert
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#9
07-21-2003, 12:51 PM
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great idea Rob!
I think I'll try that in mine.
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'99 S420 - Mommies '72 280SE 4.5 - looking to breathe life into it '84 300SD Grey - Sold '85 300SD Silver - Sold '78 Ski Nautique
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#10
07-21-2003, 03:00 PM
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Robert
Thanks, I like that. Actually I hosed it out (didn't, take it apart) with some LPS#1, checked it next morning and it wasn't leaking. I will always check before making major decisions about ripping something out tho  ... Have you taken them apart to clean the diaphragm before your filter was rigged up?Wes.. that site will be good to have if Mr Mitty Vac wont come back to life. Thanks. NO... its not an "off color" site  I traced my leak to the actuator up under the passenger foot well. It drove me crazy looking for it cause it only leaks when the engine is running.
__________________
1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car"
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#11
07-23-2003, 07:51 PM
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Yes, and that is how I realized that I needed the filter.
it has been 7 months since, and I havent had any more problems.
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