Gents,thought I do a fast write up on replacing the water pump.
As usual,I am not liable if you mess up during replacement.....
This requires that the t-stat is removed,so follow the instructions here on the board to remove it.
Remove the fan from the water pump(32mm open end spanner,counter clockwise thread
First follow the instructions to remove the t-stat.
Next remove the drive belts(15mm spanner on the tensioner pulleys,turn clockwise to release tension).
Turn the engine on the crank pulley(32mm nut) until the hole in the vibration damper matches with the hole in the indicator on the block,use a 8mm drill to block the vibration damper.
After that,remove the bolts from the pulley of the crank(13mm socket,tightening torque:25NM).Then use a Torx E14 to remove the bolts of the vibration damper(important:use new bolts for assembly.tightening torque:60NM,2 times 50° torque angle).
Remove the vibration damper(notice for assembly to put it back in correct position,there is only one position how it fits).
Remove the hose from the waterpump housing,a bucket is quite handy underneath as still some coolant comes out..
Unbolt waterpump(10mm socket,tightening torque:10NM) and remove it(hold the tube that you see in the second pic in the top let corner with the green O-ring when you pull the pump out,if it slips out in the back,you have a problem!).Also change the O-ring on the mentioned tube.
Change the pulley(hint:buy also a new pulley,they cost about 20$ and have the tendency to break while changing) from the old waterpump to the new one(10NM for the M6 bolts),use new gasket for waterpump and new O-ring for the watertube.Clean gasket surface on block.
Bolt everything back together,fill with coolant,bleed it and check for leaks!
And get the usual beer to celebrate...
1x Water pump : 11511407806
1x Gasket waterpump : 11511406765
4x Torx bolt for vibration damper: 11231402618
1x Pulley for waterpump(optional): 11511406933
1x O-ring for waterpump : 11531710055
Plus the O-rings for the t-stat:
4x O-ring : 11531406249
2x O-ring : 11531407002
and maybe some spares of the O-ring if they break during install...
Also about 3 liters coolant fluid.