Air Door Vacuum Solenoid Valve, HVAC - Component Location for S 350
Vacuum Valve Block - Schematic
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Valve a, seal connection 5 with blind plugs, connect tester to connection 13, evacuate with tester and read off pressure gauge. If a pressure
increase occurs on the pressure gauge, renew vacuum valve block (36).
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Valve b, seal connections 5, 6 and 13 with blind plugs, connect tester to connection 7, evacuate tester and read off pressure gauge. If a pressure
increase occurs on the pressure gauge, renew vacuum valve block (36).
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Valve c, connect tester to connection 12, evacuate tester and read off pressure gauge. if a pressure increase occurs on the pressure gauge,
renew vacuum valve block (36).
CHECKING VACUUM RESERVOIR:
Vacuum Reservoir
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Connect tester to the red-grey vacuum line (connection 13) and evacuate. If a pressure increase occurs on the pressure gauge, check vacuum
reservoir for leaks. if required, renew line or vacuum reservoir.
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Connect all vacuum lines up to the grey-green (connection 5) on vacuum valve block.