BMW 5251 Service Manual page 132

11 3-38
I
Cylinder Head Removal and Installation
<
Turn eccentric shaft of special tool to pretension intake cam-
shaft bearing caps. Remove nuts on all intake camshaft bear-
ing caps.
-
Slowly release tension on eccentric shaft and remove BMW
spec~al tools. Remove bearing caps and set as~de in order.
Remove camshaft and store safely.
-
Repeat procedure for exhaust camshaft.
4
Secure hydraulic lifters in lifter bores using BMW speclal tool
11 3 250, or remove lifters using a magnetic pick-up tool.
With lifters secure or removed, lift out camshaft bearing car-
riers from cylinder head.
Use care to not let hydraulic lifters fall out as camshaft car-
rier is removed.
Hydraulic lifters should be stored ln an uprightpositlon.
Used hydraulic lifters must be reinstalled into their orig-
inal lifter bores.
4
Remove intake camshaft position sensor
(arrow)
from side
of cylinder head.
4
Remove secondary chain lowerguide bolts
(arrow).
Remove
chain guide.