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variator
Full Member
Posts: 95
-83 Matra Murena 2.2
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« Reply #3 on: November 05, 2013, 11:37:56 pm » |
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I discovered that the solenoid leaked when the lights were closed so I opened the solenoid and cleaned it, but it still leaks at the opposite end of the solenoid valve. I examined the parts thoroughly when I had it open, but the rubber seems soft and nice without damage. Does anyone have an opinion on why it leaks when lights are closed?
klumzer wrote: "When I repaired my solenoid, I had internal leakage. One of the valves inside was open continuously. I had to calibrate the position of the electromagnet with shims."
How did you use shims for the electromagnet klumzer?
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« Last Edit: November 05, 2013, 11:44:47 pm by variator »
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2001 Saab 9-5 2,3T, 1981 Porsche 928, 1981 Honda cb 900 F, 1968 Triumph Trophy TR6R, 1986 Yamaha RD 350 YPVS
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klumzer
Sr. Member
Posts: 370
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« Reply #4 on: November 06, 2013, 05:48:54 pm » |
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The upper connection of the solenoid goes to the vacuum system, and the lower connections to the actuator. One side of the actuator is connected to the vacuum system and the other side is connected to the ambience (athmosphere) regarding the position of the valve pistons. If you turn on the lights, the piston of the electromagnet moves and operates the valve pistons. Each valve piston closes the connection at one side and opens the other side. Then the connections are reversed, the actuator moves and lifts up the lights. If the piston in the electromagnet is not calibrated correctly, one of the valve is open at both sides. Then your vacuum system is connected to the ambience and you realise it as leakage (what I mentioned as intenal leakage). If you use shim or shims (normal washers with different thickness, diameter 10mm) between the magnet and the valve housing, you can calibrate the movement and the position of the piston. Remove the solenoid from the car, and test it. If you blow into the upper connection you must not feel the pressure at both lower outlets, always at one side only. If you operate the magnet, you have to feel the pressure at the other outlet and not at the first. If you found that you have pressure at both outlets and the valves do not have any damage inside, your problem can be solved with shims. First it is enough to turn the magnet just to see how the valves work better. The outlet (lower connection) -where you do not feel the pressure when you blow into the upper connection- is connected to the ambience at normal operation. If you blow into that lower connection you have to realise the air at the end of the solenoid (marked "connection to ambience" in the photo).
I hope I could help you...
P.S.: Note that the valve pistons are not symmetric (one end is longer than the other- you can see it in the photo). It does matter how you install them!
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« Last Edit: November 06, 2013, 06:23:03 pm by klumzer »
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variator
Full Member
Posts: 95
-83 Matra Murena 2.2
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« Reply #5 on: November 07, 2013, 06:40:02 pm » |
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Thanks for all your help guys, and a special thanks to you klumzer, for the great explanation of the valve!
I still can not get the valve to close completely and I have ordered a new one from Simon. Do not understand completely what the reason is, rubber parts look undamaged. Is there any agent that can be used in rubber to clean / soften it up?
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2001 Saab 9-5 2,3T, 1981 Porsche 928, 1981 Honda cb 900 F, 1968 Triumph Trophy TR6R, 1986 Yamaha RD 350 YPVS
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variator
Full Member
Posts: 95
-83 Matra Murena 2.2
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« Reply #9 on: November 07, 2013, 09:16:29 pm » |
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Leakage is present only before the light solenoid is activated, when the lights are opened it does not leak.
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« Last Edit: November 07, 2013, 09:30:20 pm by variator »
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2001 Saab 9-5 2,3T, 1981 Porsche 928, 1981 Honda cb 900 F, 1968 Triumph Trophy TR6R, 1986 Yamaha RD 350 YPVS
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