Adjusting basic position of camshafts - RA05001042240X(05-2240)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Preceding work:
Basic position of camshaft checked (05-2230) .
| Crankshaft | position to 30° BTDC of cylinder 1 (arrow) (01-0120)
.
NOTE:
At 30° BTDC of cylinder 1 the camshafts can be rotated without the valves touching the piston crowns.
|
| Chain tensioner (5) | remove (05-3100) . |
| Front cover (30) and top guide rail (42) | remove (01-2120) . |
| Exhaust camshaft sprocket (3) | unbolt, remove. |
| Camshafts | rotate with wrench (25) 119 589 00 01 00 (WAF 27) or 104 589 01 01 00 (WAF 29) until the 4 mm holes in the camshaft flanges are touching top edge of cylinder head. |
| Pins (1) | insert into holes (arrows). |
| Crankshaft | rotate with wrench socket insert in direction of rotation of engine to TDC position of cylinder 1; raise timing chain for this step. |
| Camshaft aduster | rotate by hand in direction of rotation of camshaft to "retarded" position stop. |
| Timing chain | fit onto inlet camshaft sprocket and check whether timing chain is resting correctly against guide rail in timing case cover. |
| Exhaust camshaft sprocket (3) | install in base position of camshaft, bolt on. |
| Front cover (30) and top guide rail (42) | install (01-2120) . |
| Chain tensioner (5) | install (05-3100) . |
| Basic position of camshafts | check (05-2230) . |
TIGHTENING TORQUE IN NM
| Camshaft sprocket to camshaft | (see 05-2180) |
Special tools