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Do old Warren and Brown torque wrenches need calibrating

GK813

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I have this Warren and Brown model 3220 deflector beam torque wrench that belonged to my dad he only used it for the occasional car repair and maybe for work as a diesel mechanic I was a kid back then but I didnt see him use it often its about 30 years old or more now and before I use it ide like to know if these wrenches need calibrating and if so is there a way to do it myself or is it better to send it to a specialist, what would it cost to have a specialist do it?
 

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krusing

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They were one of the best at the time [in the 70's / 80's] doing Head Bolts, Harmonic Balancer Bolts and Flywheel Pulley Bolts ;)

They shouldn't need calibrating, but that depends upon how they were treated, and/or looked after,
[Not just chucked into a tool box so to speak]

Maybe find a ratchet type and compare the torques settings as a comparison.
Place a huge bolt on a vice or similar, and use that as Torque Test rig.

I guess you could get it calibrated, but not sure who would do it now, a lot of the manual tradies have retired, and other tools have come along and are different.

[My rule of thumb is, my three [Ratchet Type] Torque wrenches 1/4, 3/8 & 1/2in live in the containers I purchased them in, and unscrewed with no tension on them]
 
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shane_3800

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It's probably fine, but, if it's unkowen probably best to get it checked.
For home use it'll only need one calibration.

Torque Calibrations is the buisness that does east NSW/ACT other states I can't help.
 

Drawnnite

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It all comes down to, how much you trust it and if you also need a cal cert for any reason.

If its for your own personal ususe and youre not overly fussed, compare it to another torque wrench (bench vice and some nuts/bolts), do so in about 3 or 5 torque settings.

To get it done professionally it will vary.
Ie do you want/need it NATA certified and traceable?
 

_R_J_K_

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If you're putting an engine together, probably get it done. Anything else will probably be fine.
 

vs-lover

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Tension Wrenches are generally calibrated at 20 degrees Celsius. From there if you use it from laying out in the sun for a length of time on a hot day it will alter but should return when it fully cools down. Apart from that normal deflecting beam wrenches don't need any calibrating over time unless abused.
 

immortality

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[My rule of thumb is, my three [Ratchet Type] Torque wrenches 1/4, 3/8 & 1/2in live in the containers I purchased them in, and unscrewed with no tension on them]
Same here, I have a Warren and Brown and ratchet type torque wrenches that all live in their original boxes safely tucked away for their next use.
 

woteva

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You just want it checked and no need for calibration for home use.
Is there any way on these type of torque wrenches to adjust if it is out ?
 

EYY

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We have two of those and they’ve been punished for at least 40 years and still seem more accurate and repeatable than the cheap newer wrenches. Haven’t had them calibrated.
 

lmoengnr

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Where I used to work, torque wrenches were part of the 'calibrated tooling system', and were checked every 6 months.
We had a heap of Warren and Brown deflecting beam wrenches, from 1/4" dr to 1" dr.
Most were at least 30 years old, and were always within calibration limits.
We had an in house Metrology section for checking wrenches, gauges, measuring equipment, etc.
 
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