SL 600 (129.076) V12-6.0L (120.983) (1997)
Camshaft: Testing and Inspection
Checking Camshaft Timing
PRECEDING WORK
Cylinder head covers removed. See: Cylinder Head Assembly/Valve Cover/Service and Repair
Spark plugs removed.
OVERVIEW
Right Cylinder Head Shown
Camshaft code numbers:
check (step 1).
CHECKING TIMING OF INTAKE CAMSHAFT
Intake cams at cylinders 1 or 7:
Position so that only the base circles are resting against the bucket tappets (5) (step 2).
Dial gauge holder (2) 363 589 02 21 00 with threaded sleeve (4):
Install at cylinder 1 or 7 (step 3).
Dial gauge (1):
Fit into dial gauge holder (2) with tracer pin (3) on the inside of the camshaft to be checked (steps 4 to 6).
Preload of 3 mm and angle of approximately 90° of tracer pin (3) on bucket tappet (5):
Set (step 4).
Crankshaft:
Rotate with wrench socket 001 589 65 09 00 in direction of rotation of engine.
At valve lift of 2 mm the reading at the vibration damper must agree with the figure in the table "intake valve opens after TDC" (step 7).
CHECKING EXHAUST CAMSHAFT TIMING
Intake cams at cylinders 1 or 7:
Position so that only the base circles are resting against the bucket tappets (5) (step 8).
Dial gauge holder (2) 363 589 02 21 00 with threaded sleeve (4):
Install at cylinder 1 or 7 (step 9).
Dial gauge (1):
Fit into dial gauge holder (2) with tracer pin (3) on the inside of the camshaft to be checked (steps 10 to 12).