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#1
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vacuum primer needed...
Hi All,
I understand how vacuum works in general, but can someone tell me how it's applied for use in our cars? Any insight would be appreciated. thanks,
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sjsfiji '87 W124 260E (DD) 98K orig. mi. @7/15 CLK 7-Spoke Forged Wheels Neuspeed springs/Bilstein Sport 4/3 bump (F/R) '97 993 Carrera 106K orig. mi. Always driven like it's stolen |
#2
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Vacuum
It is used to control diaphrams on the HVAC system, It and its brother "pressure" is used in the lock and unlock process on some cars. It is definately required for the power brake assist. It is used to control shift points on transmissions, has a role in emission control devices. On old cars it was needed for the windshield wiper motor, and even the washer pump. There are probably other applications, head lamp doors, cruise control diaphrams, some of these MB has used and is starting to go away from.
A vacuum pump is required on diesels since the engine does not provide any vacuum at all to run all this stuff. |
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