Oil pump replacement/ rebuild consensus

[ATB88]

I couldn't get my oil pump out, the centre nut would just rotate with the engine, ( CounterClockwise )The muppets at the dealership must of loctite the nut on, so i just carried on with RBs with the oil pump still in

I removed the cap on 1, pushed the piston up, rotated the engine to move the crank out of the way then pulled the piston down to get the top bearing off / on.

how did you do number 1 ?

In the end, I'm pretty sure did what you did. Was a little scared of scratching the crank, moving the crank freely of the piston, but I was careful.

[BL92]

It sounds like you were turning the nut the wrong way. It's reverse-thread (righty-loosey). You could just put the car in gear or use the crank pulley immobilizing pin to lock the engine.

100% was turning it clockwise, i made error in my last post

I follwed TIS and wire tied the chain
I watched a video tutorial as well, to triple check i was turning it the right way and it looked like, if i continued, i was going to break the lower timing chain guide

[ethan]

latest 2015 update has a diamond coated piston

Source, should automatically start at 36min mark

https://m.youtube.com/watch?v=_93z82NQZV4&t=2189s&pp=2AGNEZACAQ%3D%3D

Anyone able to support the claim that >2015 pumps come with a factory DLC-coated (presumably what he means by diamond) piston?

https://www.realoem.com/bmw/enUS/partxref?q=11417838123

Looks like the newest BMW P/N is 12/11/2006. Maybe MR VANOS is trying to say Burkhart released their DLC product in 2015?

Anybody actually used one of these Burkhart pistons?

[chris719]

I don’t know of anyone that has used one but I have to believe there’s a good number of people in Germany that have used them. I’ll be installing mine in about four weeks when I get around to it.

[JakeM346]

Anyone able to support the claim that >2015 pumps come with a factory DLC-coated (presumably what he means by diamond) piston?

https://www.realoem.com/bmw/enUS/partxref?q=11417838123

Looks like the newest BMW P/N is 12/11/2006. Maybe MR VANOS is trying to say Burkhart released their DLC product in 2015?

Anybody actually used one of these Burkhart pistons?

well bought it from pierburg with the bmw tags ground out 2 years ago and it had a dlc piston

[BL92]

Anyone able to support the claim that >2015 pumps come with a factory DLC-coated (presumably what he means by diamond) piston?

https://www.realoem.com/bmw/enUS/partxref?q=11417838123

Looks like the newest BMW P/N is 12/11/2006. Maybe MR VANOS is trying to say Burkhart released their DLC product in 2015?

Anybody actually used one of these Burkhart pistons?

Since the switch to the classic catalogue, the oil pump no longer shows from 2015

I will see if i still have a screen shot from the old catalogue