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12-10-2020, 11:07 AM | #1 |
Senior Member
Join Date: Dec 2014
Location: Germantown,TN
Posts: 520
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Spark control lever detents worn
Is there a fix for worn spark and throttle control lever detents short of replacing the steering column?
Mine are worn almost smooth. |
12-10-2020, 11:23 AM | #2 |
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,946
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Re: Spark control lever detents worn
What I have done is put a small length of plastic or rubber tubing over the control lever. It keeps the lever from wandering and keeps the detents from wearing further.
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12-10-2020, 11:44 AM | #3 |
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Join Date: Apr 2018
Location: Mebane NC
Posts: 2,376
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Re: Spark control lever detents worn
In previous threads, various fixes have been proposed. I recall someone suggested chiseling new detents in. Someone else suggested increasing the spring pressure on the levers so the worn detents would hold better. I like the non-destructive approach of the flexible tubing idea, but you wouldn't regain the click-click-click nature of the original detents.
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12-10-2020, 12:04 PM | #4 |
Senior Member
Join Date: Jun 2011
Location: Summerland
Posts: 176
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Re: Spark control lever detents worn
With a hacksaw, just follow the grooves and cut new ones . Works great
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12-10-2020, 12:27 PM | #5 |
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Join Date: May 2010
Location: 215 E. 6th Street Northport, Michigan 49670
Posts: 951
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Re: Spark control lever detents worn
Use a small thin three sided file and carefully file each groove on each side. Works fine
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12-10-2020, 12:36 PM | #6 |
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Join Date: Sep 2019
Location: Fort Gratiot, Michigan
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Re: Spark control lever detents worn
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12-10-2020, 05:05 PM | #7 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Spark control lever detents worn
I've filed them and it works, but, Tom W came up with the idea of using a chisel so no material is removed. I like that idea.
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12-10-2020, 06:02 PM | #8 |
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Join Date: May 2016
Location: Scottsdale, Arizona
Posts: 617
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Re: Spark control lever detents worn
Good afternoon...on a few Model 'A's...where the spark lever plate has been worn smooth, we have just used a medium hammer and bent the plate up just a little bit until there is friction between the plate and the lever...maybe not good for show...but does work for go! Ernie in Arizona
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12-10-2020, 07:16 PM | #9 |
Senior Member
Join Date: May 2010
Location: Raleigh, NC
Posts: 510
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Re: Spark control lever detents worn
I remember a post from the 80's where the owner soldered a BB to the bottom of the control lever...said it worked great, including the "click".
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12-10-2020, 09:40 PM | #10 |
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Join Date: Jun 2013
Location: Western Springs, IL
Posts: 324
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Re: Spark control lever detents worn
I have welded up the rods and filed them back to a slight point. Worked quite well... but yes, you need to remove the rods to do this fix.
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12-10-2020, 09:53 PM | #11 |
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Join Date: Aug 2016
Location: West Virginia
Posts: 430
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Re: Spark control lever detents worn
When I rebuilt my steering gear I re-cut all the detents with a three corner file and welded up the worn bottom of spark and throttle rods and filed them back to a slightly V shape so they click in the notches nicely now. I also replaced the tension springs and brazed up and re-shaped worn ball ends on the levers.
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12-11-2020, 01:54 AM | #12 |
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Join Date: May 2010
Location: Portland OR
Posts: 6,347
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Re: Spark control lever detents worn
T, A or other cars do the same thing.
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12-11-2020, 09:15 AM | #13 |
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Join Date: Sep 2013
Location: Dighton, Mass
Posts: 1,230
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Re: Spark control lever detents worn
A dremel and cut off wheel and a steady hand nice and clean and fast . That was the
fix on Ford tractors.... |
12-11-2020, 06:56 PM | #14 |
Senior Member
Join Date: Dec 2014
Location: Germantown,TN
Posts: 520
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Re: Spark control lever detents worn
Thanks to all of you responders. Now I have good idea how to proceed.
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