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| | | | Joined: Apr 2009 Posts: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | Hello - I've developed an audible vacuum leak - sounds like it's inside the chamber. The unit is a circa 1970 Bendix diaphragm type that was rebuilt, but sat for a while after rebuild. I'm planning to open the can and look for sources of leaks....what should I look for, if any of you have serviced this type unit?
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy jaycoop, make sure the clamp ring is tight and centered, other than that, you'll have to check the diaphragm for holes, hope that helps. | | | | | Joined: Apr 2009 Posts: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | Thanks, I'll take a look at those areas and hope it's a minor thing....
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
| | | | | Joined: Apr 2009 Posts: 181 'Bolter | | 'Bolter Joined: Apr 2009 Posts: 181 | Checked it out this evening - the perimeter grooves of the chamber were slightly rusted in areas, causing a tiny leak. I cleaned everything up and used a little dilectric grease on the diaphragm edge bead - and NO LEAKS. Thanks for the tips!
1955 GMC 630, 1959 GMC W660, 1958 Chevy Spartan 80
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy jaycoop, great to hear/read. | | |
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