Crankshaft pulley
WARNING: This page is about a different variant/trim than selected.
NOTE:
Do not loosen or remove the crankshaft pulley bolt without first installing the special tools. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special service tools, otherwise severe engine damage can occur.
| Item | Description |
|---|---|
| 1 | Crankshaft pulley |
| 2 | CKP sensor |
| 3 | Crankshaft position magnetic disk |
| 4 | Balance weight |
| Item | Description |
|---|---|
| 1 | Crankshaft front seal |
| 2 | Friction washer (service part to be installed whenever the crankshaft pulley is removed) |
The crankshaft pulley forms a single unit together with the magnetic disk for the crankshaft position.
There is an exactly positioned balance weight built into the crankshaft pulley and this reduces the vibrations of the crankshaft.
The crankshaft pulley is secured on the crankshaft only by the contact force of the securing bolt, which must be changed for a new one after removal.
NOTE:
The production engine is not equipped with a friction washer. Whenever the crankshaft pulley is removed, a friction washer (base part number 6378) must be installed.
NOTE:
When the crankshaft pulley is installed it must be aligned in a defined position (arrow). For this purpose, the crankshaft must be in the TDC position. The instructions in the procedure must be observed for this.
The exact position of the crankshaft is detected by the CKP sensor. The sensor scans the crankshaft position magnetic disk. This signal is changed into a square-wave signal by the built-in converter electronics and sent to the PCM. When the sensor is renewed, no adjustment is necessary because this is predetermined by the way in which the sensor is secured.
| Item | Description |
|---|---|
| 1 | Magnetic alignment of the magnetic disk |
| 2 | Signal from CKP sensor |
| 3 | Reference mark 90 ° before TDC Comments: Figures given in degrees crankshaft |