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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Apr 2010 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 48 | My vac two speed is bad anyone change to eletric? new parts out there or need to find used? can the diaphram just be replaced? I know they are obsolete> Thanks tony | | | | | Joined: Aug 2009 Posts: 184 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2009 Posts: 184 | You should be able to find a replacement diaphragm. I'm not sure of a source though...but I do know people have replaced them. It would definitely be much easier to fix what you have then to try and figure out how to change it over to electric. If you really don't want to use the vacuum you could always make up some linkage/cable to operate the rear end instead of the vacuum can.
1946 Chevy OS 1.5ton, 1955 GMC 3100, along with other various IH,Ford,Nash,MGB,.....
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy crockbuyer, the o.e.m. p/n for the diaphragm is 3847058 which is Bendix p/n 374451. The diaphragm assembly is o.e.m. p/n 3874330 which is Bendix 2504299, I hope that helps you to find one or the other. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy crockbuyer, where have you gone? I did some more searching yesturday, I found a supplier, "GM Parts Giant" 1-877-788-1675, they say they have diaphragm p/n 3847058 $31.12 plus shipping, hope that helps. | | | | | Joined: Apr 2010 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2010 Posts: 48 | | | |
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