How the heck do you guys torque a cylinder nut to 600 ft lb? Rebuilding Bobcat combo bucket cylinder.

[California]

Ok lets try that again. Not only what Bobcat or Deere thinks. Rather, in general:

When thread locker is applied to clean dry threads, and looking at a chart of recommended torque for specific bolt sizes - which row in the chart below applies?

 

[WranglerX]

Ok lets try that again. Not only what Bobcat or Deere thinks. Rather, in general:

When thread locker is applied to clean dry threads, and looking at a chart of recommended torque for specific bolt sizes - which row in the chart below applies?

Maybe a little reading....

SOME THREAD LOCKERS CAN AFFECT BOLT TORQUE - BE CAREFUL

Can Thread Lockers SNAP your bolts in Half? During the 6 Month final assembly of our brand new $300,000 Off Road Race Truck, I noticed a few of my very expensive, 12 point, Military Spec Bolts were broken (snapped in half), after being torque up using our new “Digital” Torque Wrench, before we...

www.proformance.com.au

 

[California]

Maybe a little reading....

SOME THREAD LOCKERS CAN AFFECT BOLT TORQUE - BE CAREFUL

Can Thread Lockers SNAP your bolts in Half? During the 6 Month final assembly of our brand new $300,000 Off Road Race Truck, I noticed a few of my very expensive, 12 point, Military Spec Bolts were broken (snapped in half), after being torque up using our new “Digital” Torque Wrench, before we...

www.proformance.com.au

Thank you! That is a must-read.

For anyone who just wants to see a half-vast summary of the article:

Chris Manger of Loctite Western Australia ... results of the Loctite testing clearly confirmed that different brands and types of thread-lockers provide very very different amounts of preload/stretch when the bolt is tightened
Some (Many) thread-lockers simply act as an unreliable and non-predictable lubricant and most provide unpredictable, non-constant preloads. ... can and will result in excessive preload resulting in broken bolts if you actually tighten them to the required torque

...we were advised that the Loctite range of Thread-Lockers are designed to simulate as close as possible to a dry bolt torque condition.

and:

• Zinc plated bolts require 40% more torque than Black (Unplated) bolts
• Cad Plated bolts require 25% less torque than a Black (Unplated) bolt.
  

It's well worth it to read the entire article. Again, thanks.

 

[TractorGuy]

 

[zzvyb6]

Lost in the translation: 600 Nm is 442 Ft-lbs. That makes more sense to me.

 

[IndyJay]

View attachment 707591

Is that your "torque multiplier"?