Changed my mind about using just any grease on landing gear pins

I was reading an old service bulletin from Cessna last week, and it specified a very narrow temperature range for the grease on the main gear pivot pins. I'd been using a general-purpose moly grease for years, but the bulletin said it could get too stiff in the cold. Has anyone else had to switch greases after finding a specific spec like that?

2 comments

2 Comments

christopher_hunt1mo ago

Service bulletins are just suggestions, not law. My old moly grease has worked fine for twenty years without a single gear issue. Those temperature specs are for brand new parts in a lab, not real world planes that get flown regularly. If it ain't broke, don't fix it.

val_chen161mo ago

It's like people who refuse to update their phone's OS, then wonder why nothing works right anymore. That mindset works until it very suddenly doesn't.