I’d need more information to be able to tell if you’re a complete idiot, so I’m afraid I can’t answer that question.
Grease nipples are all the same, but alignment is key, straight on for on a slight angle for removal. Because the end is ball shaped and they’ve used angles nipples, it’s not always obvious which way is straight on.
Persevere and you’ll get it right, wasted grease is cheaper than kingpins!
Edited to add,
Hah, I replied without reading there was a proper expert reply already!
Last edited by ewn; 06/05/18 11:46 AM.