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#1
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300TE AC leak
We have a '93 300TE 4Matic. I had the AC topped up this year and then discovered that I was losing refrigerant. After putting in a dye leak indicator we found that the dust cap over the fill port had been screwed down tight enough to slightly depress the spring loded ball valve. That was the leak. After removing the dust cap there is no leak. Apparently the dimensional tolerances are very close and a slight overtightening hits the valve. I put a small "O" ring in the cap to allow it to seat on the upper surface of the fill port to eliminate the problem.
SRHARVEY '93 300TE 4Matic 275M '83 240 D 245M '82 380 SL 140M |
#2
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Interesting...
Sounds like the shrader valve can be tightened a bit. Michael
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Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E |
#3
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AC leak
The port is not a Schrader type valve. It is a spring loaded ball with no adjustment.
srharvey |
#4
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The service port caps are supposed to have seals. Whoever serviced the system should have noticed this.
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1989 300 SEL that mostly works, but needs TLC |
#5
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Must have been changed....
Would have been a schrader valve orginally. Maybe that is why it's high-aftermarket part. Sounds better to have ball-valves. I've replaced plenty of leaky schrader valves. M
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Michael McGuire 83 300d 01 vw A4 TDI 66 Chevy Corsa 68 GMC V6 w/oD 86 300E |
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