Tips for replacing tach cable?
Thread Starter
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Joined: Jun 2007
Posts: 94
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From: Salem NH
Tips for replacing tach cable?
Tach quit working on a cold day of last run of the season with my '69. I'm guessing it's the cable. Probably not touched for 25 years.
Any suggestions or tips on getting the old cable out and the new one in?
Would like to keep disassembly of dash to a minimum.
Thanks
Any suggestions or tips on getting the old cable out and the new one in?
Would like to keep disassembly of dash to a minimum.
Thanks
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
I`m guessing its the gear.
Pro
Joined: Dec 2003
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From: Usa
Racer
Joined: Jan 2006
Posts: 323
Likes: 4
From: McKinney Texas
I believe they are talking about the gear on the distributor. There is another thread out there today where 7T1 discusses how to check the gear.
If it turns out to be the cable, there are lots of threads on how to swap it. The best tip, however, is to remove the driver's seat first, as it makes working under the dash much more comfortable.
If it turns out to be the cable, there are lots of threads on how to swap it. The best tip, however, is to remove the driver's seat first, as it makes working under the dash much more comfortable.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
But, if it is the gear, you are wasting your time and money just changing the gear. The shaft and gear need to be changed as a pair or you are in for more trouble. If the gear goes, it takes the shaft with it. If you just change the gear, it will self destruct in no time.
Instructor
Joined: Dec 2009
Posts: 107
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What commonly happens is the driven gear wears into the back of the distributer housing until the gear teeth makes contact with the casting and stops which causes it and the shaft gear to strip. If the housing is worn by the gear you will have to install a brass repair button thats available from all the catalogs.
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Safety Car
Joined: Apr 2000
Posts: 3,802
Likes: 61
From: Wichita KS
Mine quit on my '72 and it was the cable.
I took the top dash pad off and replaced it from above. You still have to have strong fingers to do it that way. Even so, they will still cramp on you.
cc
I took the top dash pad off and replaced it from above. You still have to have strong fingers to do it that way. Even so, they will still cramp on you.
cc
Thread Starter
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Joined: Jun 2007
Posts: 94
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From: Salem NH
Thank you all. I am installing a new MSD pro billet distributor with a 6AL box. I checked the cable after taking the old dist. out and it didn't pull out. Good. Put a drill to it and my buddy said the tach was working. Better. I'll lube the cable and hook it up to the new dist. and keep my fingers crossed. I used a universal mounting bracket from Summit for the box and mounted it on the fender well behind and below the expansion tank. Like how that came out. I'll wire it now and see if the sheilding box will fit over the dist. and coil, I hope so...
It seems like I'll need to notch the shielding box bracket to allow for a straighter run of the tach cable. Oh well.
It seems like I'll need to notch the shielding box bracket to allow for a straighter run of the tach cable. Oh well.
