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HOMESERVICE MANUALSCHEVROLET1972CHEVELLE BASE, 2D CONVERTIBLE, 5.7L ENG VIN L, AUTOMATIC TRANS, TRANS MFR CD THM350REPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAUTOMATIC TEMPERATURE CONTROL TESTINGPROGRAMMER SERVICINGPROGRAMMER COMPONENT REPLACEMENTVACUUM CHECKING RELAY
1972 Chevrolet Chevelle Base, 2D Convertible, 5.7L Eng VIN L, Automatic Trans, Trans Mfr CD THM350

Vacuum Checking Relay

1972 Chevrolet Chevelle Base, 2D Convertible, 5.7L Eng VIN L, Automatic Trans, Trans Mfr CD THM350SECTION Vacuum Checking Relay

Identify all vacuum hoses and relay ports to ensure correct reassembly, disconnect two hoses from vacuum valve at the relay. Disconnect long vacuum hose from other side of relay and disconnect short vacuum hose (same side of relay) at vacuum motor port. When installing valve, connect all hoses in same order.

CAUTION: If long (white stripe) hose from checking relay to transducer is replaced, replacement hose must be at least 15" long. Transducer operation will he noisy if shorter hose used.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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