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  #1  
Old 09-11-2007, 12:42 PM
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check-valve ID? - 1991 190E 2.3

The check valve in the vacuum line to the brake booster has a broken connector - I have only located the part as an element of the booster vacuum line, for $45. Is the check valve available separately? Part #? Thanks.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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Old 09-11-2007, 01:00 PM
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MB offers only a complete line for most MB applications incl that one.
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  #3  
Old 09-11-2007, 01:20 PM
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MESSAGE ME your vin and I can look up the part number.
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Old 09-11-2007, 09:07 PM
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Quote:
Originally Posted by M.B.DOC View Post
MB offers only a complete line for most MB applications incl that one.
I was afraid of that - it appeared the tubing had been shrunk to the check valve ports. Since the valve input port was broken, but not completely separated, I epoxied it back together. I used liberal additional epoxy for structural reinforcement. After curing, I tested - idle was smooth and brakes had consistent assist again. I then slathered lots more epoxy over the valve body and hose ends - with luck this will forestall replacing the whole assembly.

Steve
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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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  #5  
Old 09-14-2007, 02:41 AM
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Well, not impressed with the 4-minute JB Weld I used. Car was idling rough again for my wife today, so I checked when she got home, and the repaired port had cracked again right though the epoxy. I re-repaired with more epoxy, building up a substantial thickness. After partial cure, I wrapped the whole mess with aluminum tape, topped with liberally applied coating of RTV. Then I ordered the new assembly. Hopefully this time it will last a week or so 'till the part arrives.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7
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