Can we talk about the torque spec on those new CFM56 fan blades?

Honestly, I was reading through some updated maintenance manuals last night from our shop library. Found out the torque spec for the CFM56-5B fan blade retention bolts is actually 130 foot-pounds, not the 120 I thought it was. I've been under-torquing them for months at the regional line here in Des Moines. It surprised me how much of a difference that little detail makes. Has anyone else caught a spec error like that in their own manuals?

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casey3934mo ago

Yeah I used to go with 120 too till I double checked the updated book.

5

kareng274mo ago

Oh man I ALWAYS used 120 too, now you got me second guessing everything!

4