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05-19-2018, 09:52 AM | #1 |
Senior Member
Join Date: May 2010
Location: Lakeville, MN
Posts: 5,159
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Removing speedometer drive gear
I have a speedometer drive unit that has a worn gear on it and needs to be replaced. The shaft/gear turns OK, but the gear is stuck to the shaft. Does anyone know how to remove the shaft/gear? I hate to try to remove the end plug in order to press the shaft out, as the plug would probably be damaged beyond repair and I don't think plugs are available from parts suppliers. Heat usually works on freeing up stuff, but with the aluminum housing, I am concerned heat might damage the housing. The shaft appears to be OK, so it would be great to save it if possible. BTW, I soaked the drive unit in rust remover for a couple weeks and it didn't help.
Rusty Nelson |
05-19-2018, 12:43 PM | #2 |
Senior Member
Join Date: May 2010
Location: Southern California
Posts: 3,122
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Re: Removing speedometer drive gear
The retaining cap at the threaded end is already partly out as seen in your photo. You should be able to work it the rest of the way out with a screwdriver blade. Once the cap is out the shaft will slide out and free the gear.
Tom Endy |
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05-19-2018, 03:16 PM | #3 |
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Join Date: May 2010
Posts: 2,787
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Re: Removing speedometer drive gear
Being aluminum, is this a repop part? I thought original 'turtles' were steel?
Maybe just search for a good original replacement. This is the 'driven' gear too, the 'drive' gear is the one on the driveshaft! |
05-19-2018, 04:21 PM | #4 |
Senior Member
Join Date: May 2010
Location: Lakeville, MN
Posts: 5,159
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Re: Removing speedometer drive gear
I have a number of speedometer drive units and all look like the housing is aluminum. At least after beadblasting, they look like aluminum. They are definitely not steel, as they are not magnetic.
Rusty Nelson |
05-19-2018, 04:34 PM | #5 | |
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Join Date: May 2010
Location: Southern California
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Re: Removing speedometer drive gear
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Quote:
They are pot-metal and will crack easy if you don't have the gears lined up when you tighten the two mounting bolts. Tom Endy |
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