Tach Problem--1961 Notchback Restoration—Solution Found
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Tach Problem--1961 Notchback Restoration—Solution Found
1961 Notchback Coupe. Tach fresh rebuild by North Hollywood. New Stoddard tach cable and new seal in tach drive
at oil pump. Forgot to order the shim but read a thread that most were missing shim and tach would still run.
Metal end of cable hooked up at tach drive, rubber covered end under the dash.
With cable hooked up at engine drive the cable insert spins with cable loose on the instrument end. Pretty sure everything is
installed correctly. Was careful to keep cable square to the end of both connections.
Tach does not spin at any engine speed.
Should I hook up under the dash first and then at tach drive or does it matter?
The thread with the cable not working never showed a positive outcome.
at oil pump. Forgot to order the shim but read a thread that most were missing shim and tach would still run.
Metal end of cable hooked up at tach drive, rubber covered end under the dash.
With cable hooked up at engine drive the cable insert spins with cable loose on the instrument end. Pretty sure everything is
installed correctly. Was careful to keep cable square to the end of both connections.
Tach does not spin at any engine speed.
Should I hook up under the dash first and then at tach drive or does it matter?
The thread with the cable not working never showed a positive outcome.
Last edited by Lynn Sheeley on Sun Nov 19, 2017 3:26 pm, edited 1 time in total.
Lynn Sheeley III
61 Notchback Coupe #200364
Registry Member #1350
61 Notchback Coupe #200364
Registry Member #1350
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Re: Tach Problem--1961 Notchback Restoration
I'd try inserting the cable into the tach first but also checking the length of the cable.
Mike
Mike
Mike Wilson
Lomita, CA
'63 B coupe
Lomita, CA
'63 B coupe
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Re: Tach Problem--1961 Notchback Restoration
Lynn,
Did you just replace the tach cable insert, or the whole unit with it's sheath/cover?
When inserting only the insert, it must be installed from the front end due to it's tiny 'captured' bushing on the end of the cable.
In any case, make sure both ring nuts are fully connected after the cable ends are inserted into the drive & driven shafts.
Dick
Did you just replace the tach cable insert, or the whole unit with it's sheath/cover?
When inserting only the insert, it must be installed from the front end due to it's tiny 'captured' bushing on the end of the cable.
In any case, make sure both ring nuts are fully connected after the cable ends are inserted into the drive & driven shafts.
Dick
- Jim Liberty
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Re: Tach Problem--1961 Notchback Restoration
You can test the tach with an electric drill. Be sure it is turning the correct direction.
Jim Liberty
- Harold Singh
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Re: Tach Problem--1961 Notchback Restoration
Good tip.Jim Liberty wrote:You can test the tach with an electric drill. Be sure it is turning the correct direction.
Which way is the correct direction? Clockwise, righty tighty, or lefty loosey, counter clockwise?
Harold
In the garage:
1964 356C Irish Green
1995 993 GP White
In the garage:
1964 356C Irish Green
1995 993 GP White
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Re: Tach Problem--1961 Notchback Restoration
Whichever way makes the tach read. If it don't read either way it is broke.
If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715
Cymru am byth
David Jones #9715
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Re: Tach Problem--1961 Notchback Restoration
New cable and insert and plastic spaced on insert is on gauge end. Both ring nuts are snug.
Not going to drill test a $600 fresh rebuild without knowing which direction to set drill.
With the cable connected to the drive end and turning with engine running and plenty of insert end sticking out on gauge end to connect to gauge drive and cable installed don’t think measuring the cable is needed.
Not going to drill test a $600 fresh rebuild without knowing which direction to set drill.
With the cable connected to the drive end and turning with engine running and plenty of insert end sticking out on gauge end to connect to gauge drive and cable installed don’t think measuring the cable is needed.
Lynn Sheeley III
61 Notchback Coupe #200364
Registry Member #1350
61 Notchback Coupe #200364
Registry Member #1350
- Jim Liberty
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Re: Tach Problem--1961 Notchback Restoration
Lynn, watch the direction of the cable end at the tach, when the engine is running. Set your drill the same. Thar way you can see if the problem is with the tach.
Jim Liberty
- John Hearn
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Re: Tach Problem--1961 Notchback Restoration
You have to rotate in the direction the tach needle moves.
That is clockwise from the front which translates to anti-clockwise from the back of the tachometer.
It really is that simple..............
KTF
John
That is clockwise from the front which translates to anti-clockwise from the back of the tachometer.
It really is that simple..............
KTF
John
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Re: Tach Problem--1961 Notchback Restoration
insert cable in the drive at the engine side, but leave it out of the tach gauge. start your engine and look if the insert turns at the gauge end under your dash. if the insert turns, it's the gauge that is stuck.
Jules
Water pumps are for windshield washers only.
Water pumps are for windshield washers only.
- Jules Dielen
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Re: Tach Problem--1961 Notchback Restoration
how long ago was the gauge restored?
Jules
Water pumps are for windshield washers only.
Water pumps are for windshield washers only.
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Re: Tach Problem--1961 Notchback Restoration
Did some more reading last night and found a thread if something is missing from the tach mount and you tighten the mount nuts too tight you can lock a plate inside the tach and it won’t spin.
I loosened my mount nuts from very tight to just finger tight and now the tach works as it should!
Can’t refind the thread. Does anybody know what is missing from back of tach to cause lockup?
I loosened my mount nuts from very tight to just finger tight and now the tach works as it should!
Can’t refind the thread. Does anybody know what is missing from back of tach to cause lockup?
Lynn Sheeley III
61 Notchback Coupe #200364
Registry Member #1350
61 Notchback Coupe #200364
Registry Member #1350
- Jim Liberty
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