Jim Cannon 199 Posted September 27, 2020 Share Posted September 27, 2020 Have any of you guys that have worked on your A/C-heat system on your '63 Riviera made a color vacuum hose diagram? Something like in the shop manual but with the colors of each hose and where they go? I have been contacted by an ROA member looking for help with his '63 Riv. I don't have anything more than what's in the shop manual. Thanks! 1 Link to post Share on other sites
Turbinator 735 Posted September 27, 2020 Share Posted September 27, 2020 I have a copy in the shop of the diagram you are looking for. It’s color coded per the shop manual. The modifications made to AC system as result of discontinued parts are not shown. I’ll copy the diagram tomorrow and post the diagram here. Turbinator Link to post Share on other sites
Turbinator 735 Posted September 28, 2020 Share Posted September 28, 2020 I have a copy in the shop of the diagram you are looking for. It’s color coded per the shop manual. The modifications made to AC system as result of discontinued parts are not shown. I’ll copy the diagram tomorrow and post the diagram here. Turbinator 1 1 Link to post Share on other sites
XframeFX 93 Posted October 1, 2020 Share Posted October 1, 2020 Thanks for starting and contributing on this. It is on-my-list as well. Where can these vacuum hoses with colour stripes be sourced? I have found Old-Air as the only supplier so far. Link to post Share on other sites
telriv 781 Posted October 1, 2020 Share Posted October 1, 2020 Go to ANY Chevy or Pontiac (Ames) or even Olds (Fusick) supplier. Just do a search. Tom T. 1 Link to post Share on other sites
Turbinator 735 Posted October 27, 2020 Share Posted October 27, 2020 The diagram for the panel that supports the three vacuum switches has to fished out as well. I’ll post that diagram of the vacuum hoses for the 63 toute suite. Turbinator Link to post Share on other sites
Turbinator 735 Posted January 2 Share Posted January 2 Here is the vacuum hose diagram for 1963 Riv Ac. I found the diagram in a book entitled “ Buick Preliminary Setup”. Link to post Share on other sites
Chasander 41 Posted January 3 Share Posted January 3 Bob one hose on the modulator is of a larger dia. Is that the one that goes to the STV? Link to post Share on other sites
Turbinator 735 Posted January 4 Share Posted January 4 (edited) On 1/3/2021 at 7:33 AM, Chasander said: Bob one hose on the modulator is of a larger dia. Is that the one that goes to the STV? Chuck, I cannot remember if one hose from the modulator was larger than the other. Just can’t remember. Since I went with the STV upgrade(?) the modulator was no longer needed. The electronic switch serves to engage or disengage the clutch on the compressor to keep the evaporator from getting too cold and freezing the evaporator. Turbinator Edited January 4 by Turbinator (see edit history) Link to post Share on other sites
1965rivgs 761 Posted January 4 Share Posted January 4 On 1/3/2021 at 6:33 AM, Chasander said: Bob one hose on the modulator is of a larger dia. Is that the one that goes to the STV? On the `64-`65 models the large hose at the modulator is the vacuum supply. I believe the same is true for the `63 model. This junction, ie the transition from small diameter hose to large, is very often the source of a vacuum leak which disables the entire system. This is one of the areas I make modifications in when restoring the vacuum system. Tom Mooney Link to post Share on other sites
RivNut 4,030 Posted January 4 Share Posted January 4 Why am I thinking that two of those vacuum diaphrams are supposed to be dual diaphram units. There should be two hoses going to them. Link to post Share on other sites
Turbinator 735 Posted January 9 Share Posted January 9 On 1/4/2021 at 5:52 PM, RivNut said: Why am I thinking that two of those vacuum diaphrams are supposed to be dual diaphram units. There should be two hoses going to them. Ed, as I remember two hoses do go to the vacuum #3 and vacuum actuator #4. One hose comes from vacuum control panel that has a white stripe that goes to #4. The second hose, for #3 gets starts at# 3 port and T’s in another vacuum hose. ( I’m going on memory and I could be mistaken) Link to post Share on other sites
JJ62 29 Posted January 9 Share Posted January 9 Does anyone have the same diagram for a '65? My vacuum hoses are a mess! Jim Link to post Share on other sites
1965rivgs 761 Posted January 10 Share Posted January 10 (edited) On 1/9/2021 at 10:59 AM, JJ62 said: Does anyone have the same diagram for a '65? My vacuum hoses are a mess! Jim `65 shop manual Jim, assuming you have the manual? Tom Edited January 10 by 1965rivgs (see edit history) 2 Link to post Share on other sites
Turbinator 735 Posted February 17 Share Posted February 17 Early on Jim Cannon wrote up information on the AC for his 63 in the Review. I want to quote part of Jim's paragraph and ask how I can achieve "open for heat and closed for AC ( Full Recirc) by having no vacuum applied to either diaphragm ( Or either port of a 2- Port diaphragm, like you use on the plenum on the firewall under the hood). I don't use partial settings at all. The spring pulls the recirculating door closed ( full recirculation - no outside air) if no vacuum is on a diaphragm under the fan." It seems I'd be pulling off vacuum hoses and plugging up the diaphragms? When four or five things are going on at the same time and something is done the four or five things change functions. I cannot follow the drill. Any help is appreciated. Turbinator Link to post Share on other sites
Jim Cannon 199 Posted February 18 Author Share Posted February 18 Bob- Under the fan housing, from under the car, disconnect the one vacuum line that feeds the "partial open" diaphragm and plug that vacuum hose with a golf tee. If you still have the original double stacked vacuum diaphragms, that's all you need to do. If you have replaced the original double diaphragm with a single unit, then feed the vacuum for the fully opened diaphragm to both nipples of the replacement diaphragm. Use a small vacuum T-fitting to send the vacuum to both ports. Jim Link to post Share on other sites
Turbinator 735 Posted February 19 Share Posted February 19 Jim, first off a big Thank You. You’ve got get up to Ellicott City after everyone not contagious. So vacuum needs to go into the single two port diaphram under the heater box. Take vacuum from the source with one hose then make T that go to the two ports. Simple. Thank you again. Turbinator Link to post Share on other sites
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