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Jul 21st, 2025 | | 
#44586 04/06/2004 12:40 AM | Joined: May 2003 Posts: 90 Member | | Member Joined: May 2003 Posts: 90 | Hi-
I have a speedo and a gear reducer out of a 2 ton GMC truck. I was wondering if anyone knew where to get the rubber diaphram for the gear reducer. This is mounted to the back of the speedo drive and has a vaccum source to it. When you shift your 2 speed rear axle, it pulls a lever down with vaccum, changes the ratio to the speedo so the correct speed is showing. Any tips would be appreciated.
The diaphram is bad on the reducer, giving me a leak and does not show correct speed.
Thanks,
Brent | | |
#44587 04/06/2004 4:57 PM | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Try Ohio Valley Microtech, on Bardsdtown Road in Louisville, KY. They used to be Ohio Valley Speedometer Supply, and changed the name when they started rebuilding automotive computers, etc. They repair just about any small electro-mechanical device, plus rebuilding speedo heads, gas gages, etc. I don't have a current email or phone number, but a web search should come up with something.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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#44588 04/08/2004 4:36 AM | Joined: May 2003 Posts: 90 Member | | Member Joined: May 2003 Posts: 90 | Thanks, I will give it a try
Brent | | |
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