Re: [MBZ] MityVac troubleshooting

[Stuart Saxonberg]

Thanks for the feedback, everyone - I'll be seeing about cleaning it up this
weekend.
 
Mostly just relieved it should be fixable with a little poking around, at
this point.
 
Stuart S.

Re: [MBZ] MityVac troubleshooting

[Scott Ritchey]

If you get any brake fluid (and maybe other fluids) into the metal MityVac,
it will corrode to the point the valves don't seal.  You can usually fix it
for a while as Bruce describes but it will probably corrode again in a few
weeks.  I replaced my metal model with the plastic one for this reason.

Scott Ritchey
300 TD, 300SD

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Stuart Saxonberg
Sent: Monday, February 26, 2007 20:45
To: mercedes@okiebenz.com
Subject: [MBZ] MityVac troubleshooting

Hi, guys.
 
I'm working on tracking down a severe leak in my door lock system, and I
can't get my [EMAIL PROTECTED] MityVac to seal well enough on the vacuum lines 
to hold a
vacuum long enough to test the lines.
 
(I've confirmed that it's not that every single line in the car is leaking
by testing with a piece of hose and a nice damp thumb - definitely something
in the MityVac itself just sometimes doesn't seal right; I think it's just
that the plug adapters aren't very good sometimes.
 
Has anyone else had this happen and is it fixable (ie, something I can do to
the plug adapters)?
 
Or is the MityVac simply broken? (I have the metal one, not the plastic, so
theoretically it could be rebuilt, if it's internal).
 
Thanks,
Stuart S.
1976 300D (w115)
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Re: [MBZ] MityVac troubleshooting

[B Dike]

 
>Has anyone else had this happen and is it fixable (ie, something I can do to
>the plug adapters)?
 
>Or is the MityVac simply broken? (I have the metal one, not the plastic, so
>theoretically it could be rebuilt, if it's internal).
 
>Thanks,
>Stuart S.

Stuart, 

I had the same problem with my metal MityVac.  There are 2 or 3
rubber valves that can leak due to minute corrosion deposits on
on the housing.  It can be fixed by cleaning up the housing
and lubing the flaps.  *BEWARE* there are some teeny
tiny rubber parts that will fly out if you are not extremely
careful!

Good Luck,




Bruce
82 300CD 348kmi 'His'
85 300CD 253kmi 'Hers'
75 240D 202kmi 'Donner'
77 240D 204kmi 'Blitzen' gone to a better place
74 240D 79kmi 'Orangewagen'
73 220D 'Fnu Lnu'
 
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Re: [MBZ] MityVac troubleshooting

[Barry Stark]

Stuart -
I have the plastic one but I bet yours is similar in the respect that
sometimes you just suck some junk into it that needs to be cleaned out. They
have, at least mine does, a very simple one way rubber flapper check valve
incorporated into the body of the thing just inside of the inlet port. You
need to take it apart and clean it all up. I believe that I lubed The
piston/bore too. As I recall I used a very thin film of this stuff I got to
lube brake parts, wheel cylinders calipers and the like, during assy. Looks
like it may just be some glycerine based stuff. I bet that Vaseline would
work too.

Barry.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Stuart Saxonberg
Sent: Monday, February 26, 2007 5:45 PM
To: mercedes@okiebenz.com
Subject: [MBZ] MityVac troubleshooting


Hi, guys.

I'm working on tracking down a severe leak in my door lock system, and I
can't get my [EMAIL PROTECTED] MityVac to seal well enough on the vacuum lines 
to hold a
vacuum long enough to test the lines.

(I've confirmed that it's not that every single line in the car is leaking
by testing with a piece of hose and a nice damp thumb - definitely something
in the MityVac itself just sometimes doesn't seal right; I think it's just
that the plug adapters aren't very good sometimes.

Has anyone else had this happen and is it fixable (ie, something I can do to
the plug adapters)?

Or is the MityVac simply broken? (I have the metal one, not the plastic, so
theoretically it could be rebuilt, if it's internal).

Thanks,
Stuart S.
1976 300D (w115)
_