Torquing Lh Thread Hub Nut

[nelmo]

Probably a stupid question but will a torque wrench work on a left handed thread?

 

Trying to tighten up the hub nut and need to decide whether to buy an adaptor for the socket so I can use my torque wrench on it or just get a breaker bar and tighten up as much as I can.

 

Edit: just found an old thread that suggested a 6ft gorilla with a breaker bar . I'm 6' 2" and 18 stone - does that qualify?

Edited September 16, 2015 by nelmo

[Guest 2b cruising]

Some older wrenches have a removable drive square.

It just pulls out the turn the wrench over and refit drive square.

Bendy wrenches have a scale for either direction.

Clock dial ones are a no no.

What are you building with l/h thread hub nuts.

If not, you will not cause any damage by putting the torque figure to 'f' tight.

Threads, nuts and axles are all strong enough and the bearing will not be affected.

[Guest 2b cruising]

My word Richard. That would be in the region of 700 lb/ft.

HGV wheel nuts are usually around 350lb/ft on a 18mm thread.

The stub axle nuts with 24mm thread are around your figure.

That means yours are triple f tight.

[nelmo]

What are you building with l/h thread hub nuts.

Sierra rear hubs - pretty common, surely?

[Jez Morton]

All the torque wrenches I have work one way, right hand thread. To do my left hub I took the ratchet head apart and rebuilt it with the drive coming out the other side. It's is a simple job to switch it just two screws.

[Jez Morton]

Just looked at torque, Haynes says 250 to 290 Nm. I have a 350Nm wrench which easy pulled the torque without having to standing on it.

[Guest 2b cruising]

Sierra rear hubs - pretty common, surely?

Very strange, I realised the Sierra connection and deleted that message straight away.

[Guest 2b cruising]

sounds too much doesn't it...

 

I guess it was more like most of my weight with feet still on the floor on a 1m breaker & until the nut obv. stopped moving.

No near to worry Richard. You might have stretched the threads a little but I very much doubt it.

It was only a quick calculation anyway. You would have to have your full weight right on the very end of the 1M bar to get to that figure.

16 St x 14 lb x 3.5 rough ft per M = approx torque at drive centre.

EDIT. Done it old fashioned cos that's wot I is.

Edited September 16, 2015 by 2b cruising

[kevin the chicken]

I have a couple of britool torque wrenches in which to reverse the drive you just push the square peg through to the other side. Simple as that.

[Snapperpaul]

My torque wrench has a left or right ratchet lever and will trigger in either direction