How screwed am I?

[Bob R]

Well, I purged the tank, took it to a shop and they cut on one side of the broken bolt, rolled it back and replaced the bolts.

Now comes the **** Me Running part.

I was putting in back together with nylocks today and one of the new bolts snapped at 4Nm, about 35 in #s, The torque in the manual is 5Nm, I think I am not looking in the frickin manual anymore. So it looks like what should have been an easy reassembly today has turned into another wait and let's fix it again. I wasn't even adding a little extra for the nylock, just going with standard torque number. If I knew the size of the bolt I would go buy my own to take with the tank.

**** Me.


bob

 

[scot in exile]

If you did not have bad luck you would not have any luck, sorry for your troubles.

 

[1K9]

Maaan you are learning the art of wrenching the hard way... busting boltz.

 

[scot in exile]

5nm is only about4lb foot, I could screw it on harder with my fingers, are you sure you are using the torque wrench correctly??????

 

[Gregger]

The other thing to consider is that all the bolts could have been overstretch when you torqued them the first time. If so, they could fail with a minimum of twist....

You stated that the torque wrench did not click. Did you find out why? I wouldn't use it or at least get it calibrated.

 

[Bob R]

The other thing to consider is that all the bolts could have been overstretch when you torqued them the first time. If so, they could fail with a minimum of twist....

You stated that the torque wrench did not click. Did you find out why? I wouldn't use it or at least get it calibrated.

I have already tossed both cheap torque wrenches that click. Will get some bar or dial type from Snap On, half price through daughter. Bought a in. lb. that I used this AM. Only got 4 NM before it twisted off. I am thinking cheap bolt that got brittle from heat . So I now have some hex cap 10-24 bolts to try and no more torque wrenches but calibrated elbow. This is the torque wrench I used today, I am pretty positive I didn't over torque. 5NM is about 45 inch pounds. Next time will be between 3.5 and 4 NM

Bob

 

[CrzystghndKC]

I have already tossed both cheap torque wrenches that click. Will get some bar or dial type from Snap On, half price through daughter. Bought a in. lb. that I used this AM. Only got 4 NM before it twisted off. I am thinking cheap bolt that got brittle from heat . So I now have some hex cap 10-24 bolts to try and no more torque wrenches but calibrated elbow. This is the torque wrench I used today, I am pretty positive I didn't over torque. 5NM is about 45 inch pounds. Next time will be between 3.5 and 4 NM

Bob

At this point I would never trust a torque wrench again. I would trust my feel and if it leaked I would look for a better gasket.

 

[Bob R]

At this point I would never trust a torque wrench again. I would trust my feel and if it leaked I would look for a better gasket.

I am already planning on running a bead of RTV around the lip of the tank under the gasket and just snugging down with feel. If it wasn't gas right on top of electrics and engine I would just run it without the one bolt.....but.....

bob

 

[Pete]

Torque wrenches are great tools when used correctly i use my torque wrench for most jobs but I felt that hand feel was best when I replaced my pump many moons ago. As Rick said assemble it and pour some gas in maybe even some instant gasket on top of the gasket.

Have to agree with hand tighten over torque wrench for smaller diameter studs and bolts. Use a standard spanner which will provide the appropriate leverage. Maybe try out tightening nuts on a same size bolt and type held in a vice. If you don’t have the experience to gauge your handraulic torque setting.

 

[1K9]

I have already tossed both cheap torque wrenches that click. Will get some bar or dial type from Snap On, half price through daughter. Bought a in. lb. that I used this AM. Only got 4 NM before it twisted off. I am thinking cheap bolt that got brittle from heat . So I now have some hex cap 10-24 bolts to try and no more torque wrenches but calibrated elbow. This is the torque wrench I used today, I am pretty positive I didn't over torque. 5NM is about 45 inch pounds. Next time will be between 3.5 and 4 NM

Bob

I have a small torque wrench in my Santa list for this year. Im scared when I reach resistance with some boltz and undertorque them. Have a heatshield hex head that will not budge. Not stripped yet but damaged. How do I get it off?