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Old 07-06-2005, 02:14 PM
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Join Date: Dec 2001
Posts: 572
Question Air Compressor for M103 valve seal replacement ?

Would this compressor be sufficient to keep valves elevated in a 103 engine for valve stem seal replacement?

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Old 07-06-2005, 04:21 PM
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Join Date: Aug 2004
Location: Hamilton Square NJ, near Trenton
Posts: 391
Yes. BTDT, just don't let the connection slip off. BTDT, too.
Norm in NJ
Next oil change at 230,000miles
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Old 07-06-2005, 06:38 PM
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Most any compressor will do that job since it takes pressure not volume. As nglitz said, if the valve slips down and looses seal, it's gone. For this reason, make sure the piston is at the top on the cylinder you are working on. If the piston is at the top you will be able to lift the valve with your fingers to reseal. For that matter, some guys just roll the piston to the top and change the seal, at least on a diesel. I don't know if the chamber is tight enough for this to work on your engine.

Good luck,
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Old 07-06-2005, 06:46 PM
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Join Date: Jun 2004
Location: Bentonville
Posts: 128
I did valve seals on my 560sl w/o compressed air; just turned each cylinder to TDC.

as ever

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