good Q. it seems on initial installation that i can reef on a termination, and then gain somemore after a few hours. usually, on a service call, i will give terminations a 'tweek' in a panel, along with sweeping out the dust bunnies, and working the breakers.
I was wondering only how often you might suggest to your customers that they be checked? Yes, I NoAlox it all. In the thread of the lugs stops the sqweeeeek Tom's right-never without reterminating the connection
[This message has been edited by electure (edited 08-07-2001).]
Steel can mostly be retorqued as much as you wish provided that the parts are cool to the touch at the time.
When a gasket is involved, the procedure is usually to torque once and leave it. Torquing may actually be a long process requiring that the bolts be tightened incrementally in a certain sequence. Some engines may recommend retorquing after the first 20 hours of operation. There are engines with no head gasket too... I suppose they could be retorqued any time they were cool... but again this should not be necessary.
I see torquing a conductor more as a matter of how big a dimple does it need. Once it has that dimple, it has deformed and the pressure will be somewhat relieved over time as the conductor is squished out. Retorquing it will cause the dimple to enlarge. The difference here is that copper and aluminum are much softer than steel.
Re: Torque Frequency#3096 08/08/0103:57 AM08/08/0103:57 AM
agreed. I was just wondering if other trades share our concerns here
After all, there are aluminum heads for cars. Myself, i spent a decade putting together 6061 AL parts to specs of 1/10,000. The variables included all enviromental, as well as those introduced . The engineering aspects did not include any one-liner fits all explanations. One item i do use is scotchcoat, which seems to isolate a termination well.
[This message has been edited by sparky (edited 08-08-2001).]