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-   -   Torque value with plus sign? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1070181-torque-value-plus-sign.html)

Brian Cameron 08-13-2020 05:23 PM

Torque value with plus sign?
 
What does it signify if a torque value looks like this: 50 + 5 ?

not 50+/-5 degrees (unless it shorthand for the latter, but i doubt an angle gauge would make sense in this application).

Does it mean tighten to 50 Nm, then add 5 more (for total 55) and re-tighten?

or what????

TIA

http://forums.pelicanparts.com/uploa...1597368194.jpg

JoeMag 08-15-2020 01:55 PM

I’ve only seen those on drain plugs... I’ve always assumed they meant 50 and if it leaks go to 55.

Never had a drain plug leak with seal ring.

Brian Cameron 08-16-2020 07:40 AM

This is from a ZF manual for power steering rack rebuild - both notations are used. Some of them would be pretty hard to get at if they leaked after reassembly

http://forums.pelicanparts.com/uploa...1597592377.jpg

al lkosmal 08-18-2020 02:59 PM

This is a guess, but I would say that those are tolerances......of 50+5...I.E. +5/-0 spec, resulting in a torque value of 50-55 (although I can't say I've seen them expressed quite that way before)
However, some of the other specs, like the tie rod show typical +/- tolerances of 80 +/-8 giving you a spec value of 72-88.

regards,
al


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