[W126 Coupe] Transmission Modulator Valve

[Stroia]

Chet,  

Thanks for the post!  I did not check the vacuum element but when I disconnected the vacuum hose it had some fluid in it.  So I am hoping this is the problem.  I don't remember seeing the bolts but I will take another look this weekend.  Thanks again.

John


Message: 4
Date: Mon, 23 Aug 2010 07:03:59 -0400
From: "Chet Hwilka" <chwilka at comcast.net>
Subject: Re: [W126 Coupe] Transmission Modulator Valve
To: "'Mercedes Coupes Mailing Lists'" <mbcoupes at mbcoupes.com>
Message-ID: <715EB4D056824356B5923A1FA8CBADC0 at Chethp>
Content-Type: text/plain; charset="us-ascii"

John,

 

It looks like there is just a clamping bracket that slips over the valve and
2 bolts attach it to the side of the transmission.  

Remove the 2 bolts, slip the bracket off and pull out the vacuum element.
Behind the vacuum element, there's a thrust pin, spring and the actual
valve.  

 

It maybe too late now, but did you check the vacuum element with a vacuum
pump to see it was actually bad/leaking?   

 

Check these guys out for a manual on the 722.3 & 722.4 transmissions.

http://www.txchange.com/atsg.htm

 

Chet

  _____  

From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Stroia
Sent: Sunday, August 22, 2010 9:05 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Transmission Modulator Valve

 

Hi,

 

My 89 SEC is blowing white smoke out of the exhaust.  I am not losing any
coolant so I believe my transmission modulator valve is bad.  Ordered a new
one.  Got under the car to replace it but I could not get the old one off.
Turned it, pried it, pulled, etc.  Before I really wrench it and break
something off that falls into the transmission, am I missing something?  I
could not find any directions in the archives or on my owners manual CD.
Thanks for the help

 

John Stroia

89 560 SEC

    
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