Replacing prop shaft uj.

I knew something was wrong when it got noisey.I grease them regularly, but i was supprised how quickly they go to crap.
Anyways, i took the front prop off and removed the old uj simply enough, but when i reassembled it came up against a problem that cracked the top off one of the cups.
The Haynes manual that i had outside with me recomended filling the cups up to a third with grease which seemed reasonable.However, when i squeezed the cups in to the point of putting the circlips in, one cup burst.
I was carefull with the needle rollers, and didnt find evidence of one causing the damage.The only thing i can think of is the grease causing a hydraulic lock and cracking the cup.
I`ve had to order another and just want it back together, but i`m curious as to whether anyone else has experienced similar.

ATB.Andy.

too much grease ,look in a genuine one there isnt much

jamesmartin said:

too much grease ,look in a genuine one there isnt much

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Cheers James.Thought as much.

did you have the nipple in or out when you were squeezing it all back together?
if it was in then there was nowhere for the grease to go easily.

what manufacturer of UJ too?