How Tight Should These Nuts Be

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BLB27
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How Tight Should These Nuts Be

Post by BLB27 » Tue Dec 06, 2022 9:05 pm

How tight should these nuts be? Is there recommended torque value?


1) Spring shackle nuts.

2) Nuts on bolts attaching front and rear springs to the frame.


BUSHMIKE
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Re: How Tight Should These Nuts Be

Post by BUSHMIKE » Tue Dec 06, 2022 9:15 pm

Hand Wrench tight and cotter.


Joe Bell
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Re: How Tight Should These Nuts Be

Post by Joe Bell » Tue Dec 06, 2022 9:16 pm

snug, get all the weight of car and body then check them, they will draw up more then, do not have to he man them they are just there to hold all in place.


jiminbartow
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Re: How Tight Should These Nuts Be

Post by jiminbartow » Tue Dec 06, 2022 9:36 pm

Does this help? I copied it from a Dec. 31, 2007 MTFCA thread. I believe I read on the forum that they did not use torques during the Model T era. Experienced mechanics just tightened by feel. Torque charts came about years later to show how tight certain sized bolts could be safely tightened before stripping or breaking. Jim Patrick

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Steve Jelf
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Re: How Tight Should These Nuts Be

Post by Steve Jelf » Tue Dec 06, 2022 11:13 pm

"Tighten it until just before it breaks."
The inevitable often happens.
1915 Runabout
1923 Touring


jab35
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Re: How Tight Should These Nuts Be

Post by jab35 » Wed Dec 07, 2022 7:25 am

I agree with Mike on spring shackles, but spring to frame clamps, I tighten same torque as rear axle hub nuts. And cotter everything before you test drive. Spring to frame clamps may need retorquing after test drive. jb


Art Ebeling
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Re: How Tight Should These Nuts Be

Post by Art Ebeling » Wed Dec 07, 2022 8:13 am

Steve Jelf wrote:
Tue Dec 06, 2022 11:13 pm
"Tighten it until just before it breaks."
Steve Jelf wrote:
Tue Dec 06, 2022 11:13 pm
"Tighten it until just before it breaks."
I usually tighten most bolts until they break and then back them off a quarter turn. Art


TXGOAT2
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Re: How Tight Should These Nuts Be

Post by TXGOAT2 » Wed Dec 07, 2022 11:17 am

The spring to frame clamp nuts need to be tightened evenly in a cross pattern with the car sitting on level ground. After running a hundred miles or so, they will most likely need retightening. With old parts, caution must be used. For best results, have parts clean and springs lubricated.


RGould1910
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Re: How Tight Should These Nuts Be

Post by RGould1910 » Wed Dec 07, 2022 12:44 pm

Spring shackle nuts should be kept loose enough to allow movement.


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Re: How Tight Should These Nuts Be

Post by jab35 » Thu Dec 08, 2022 11:49 am

Spring shackles as an assembly should be 'tight', if they bind on either the spring or perch that issue needs to be corrected in a way that permits full and tight assembly of the shackles. Shackle bolts left loose promote rapid wear of both the shackles and spring/perch bushings. jb

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