Engine Block; Oil Sump; Crankcase - BMW N62B44 Manual

Engine Block

Oil Sump

The oil sump consists of two parts. The upper section of the oil sump is made from cast
aluminum and is sealed to the crankcase with a rubber-coated sheet steel gasket. This
section of the oil sump has a cross shaped cut out oil filter element recess. The upper sec-
tion of the oil sump is inter connected to the oil pump and is sealed with a sealing ring. The
double panel (noise insulation) lower section of the oil sump is flanged to the upper section
of the oil sump.
1. Upper Section of The Oil Sump
2. Oil Pump
3. Oil Level / Condition Sensor
4. Lower Section of The Oil Sump
5. Oil Filter Housing
6. Oil Drain Plug

Crankcase

The crankcase has a one-piece "open deck" design and is made entirely from AluSil. The
cylinder walls are hardened using a specific procedure (exposure honing). Exposure hon-
ing involves treating the cylinders with a special "soft stripping". This removes the aluminum
from the cylinder surface and the hard silicone particles remain.
O O p p e e n n D D e e c c k k = = E E x x p p o o s s e e d d c c y y l l i i n n d d e e r r c c o o o o l l a a n n t t c c h h a a m m b b e e r r
1. Flow to engine "V" (return coolant collection area)
42-02-67
Oil Sump Components
2. External cylinder bank wall
42-03-65
42-03-66
45
N62 Engine