wonky tach - removing sport dashboard?
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=34790
Printed Date: November-17-2024 at 9:41am
Topic: wonky tach - removing sport dashboard?
Posted By: terminaldegree
Subject: wonky tach - removing sport dashboard?
Date Posted: October-18-2014 at 1:58am
Hi All,
Like many (I'm pretty sure it's a) Teleflex electric tachs from that period, this tachometer wanders a good deal of the time. On past boats, I've been able to solve tachometer problems by "exercising" the pot on the back a few times between 4, 6, and 8 cylinder settings, and then putting it back where it belongs.
Does the stock tach on my boat have the same sort of adjustment on the back?
Also, how do I access the tach with a minimum of disassembly and unhooking wires? I tried to use the search function here, but couldn't find the magic set of keywords to find the answer. Is it just removing the thumb screws and gingerly pulling the dash away?
Thanks in advance for your help!
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1996 Sport Nautique GT40/Acme 422
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Replies:
Posted By: Gary S
Date Posted: October-18-2014 at 2:15am
I have the same problem that developed this fall. I was just too busy to chase it down,it will be interesting to me anyway on how you fix it. I do know that you unloosen the 4 thumb screws and lift up the dash to get underneath it. The wire harness is long enough to lift it up.
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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Posted By: skutsch
Date Posted: October-18-2014 at 10:20am
Owen, yep as Gary said, loosen the 4 Thumb screws. Then with manipulation of the steering wheel tilt and the dash pad, you should be able to actually flip it completely upside down giving you access. Let us know how it works. Other then the occasional stuck at 650 when I turn it off, my tach has been pretty consistent (consistent to what I have no idea, needs to be checked verified).
Searching CCF: the search function here is okay - the better way is to use google and just put 'correctcraftfan.com' in the search text
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Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique
My Dad's 63 Ski N
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Posted By: terminaldegree
Date Posted: October-20-2014 at 5:28pm
Update:
With help from my wife (just holding things in various positions while I worked), this wasn't too hard to do. 4 thumb screws (whew, those mounting points on the dash pad look rough!), one more screw on the far left side of the dashboard, tilt the wheel down, and the dashboard was loose.
Once the dash is loose, there is some "give" in the wiring harnesses to move it a few inches in whatever direction. As mentioned earlier in the thread, the best working position was rotating the whole dashboard upward, giving you access to the back of the gauges if you stand at the helm.
The tach has the typical potentiometer that allows settings for 4, 6, 8 cylinder engines. It can be adjusted with a flathead screwdriver. I "exercised" that a few times between the various settings, then re-centered the adjustment at the 8 cylinder setting. Unfortunately, the boat is winterized, so I didn't have the chance to see if that fixed the wandering tachometer issue. I'm pretty confident it will - at least this has worked on other boats in my past.
While I had access to the back of the dash, I unhooked the speedo tubes and blew air through them, to clear 'em out for winter. One tube had a little water, while the other was clear. A 3/8" wrench takes the nut off the back of the speedo, allowing you to remove the pitot tubing from the hose barb.
During reassembly, I noticed a slightly loose RCA cable on the stereo and the electric hookup for the depth finder had come undone. My wife was able to reattach them as I slowly moved the dash panel back into place.
Thanks again for your advice, and I hope my explanation will prove useful to someone else searching in the future.
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1996 Sport Nautique GT40/Acme 422
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Posted By: 8122pbrainard
Date Posted: October-20-2014 at 6:43pm
Owen,
It wouldn't hurt for you to clean up every connection/plug going back to the engine. I've found some pretty nasty corroded connections.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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Posted By: terminaldegree
Date Posted: October-20-2014 at 6:58pm
8122pbrainard,
That's a good idea - I have a bunch of little things on the "punch list" to keep me occupied in May, when I pull it back out from the storage barn across town. That should be one of them.
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1996 Sport Nautique GT40/Acme 422
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