CTX-SLPR Posted September 21, 2015 Share Posted September 21, 2015 So I've been doing my homework for a number of small projects while waiting to clear the garage and ship my Riviera to me. I ran across www.chip.com and at the bottom of the dual stage vacuum diaphram page I find this:NOTE: The vacuum diagram in the '64 shop manual (Fig. 11-80) is incorrect. The diaphragms are reversed; the one labeled "Heater & Evaporator Air Door Dual Stage Vacuum Diaphragm" is actually the "Outside & Recirculated Air Door Dual Stage Vacuum Diaphragm" (and vice versa).Is this true? I replumbed my vacuum system as part of getting my console and HVAC head back in place. Never tested it but this would be good to confirm since I have to pull the console to replace a shifter cable and repair the ears. Thanks, Link to comment Share on other sites More sharing options...
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