Drive Plate
| ITEM | DESCRIPTION |
|---|---|
| 1 | Bolt (10 of) |
| 2 | Drive plate |
| 3 | Dowel |
| 4 | Crankshaft |
| 5 | Reluctor ring |
| 6 | Starter motor |
| 7 | Crankshaft Position (CKP) sensor |
The drive plate is located at the rear of the crankshaft. The drive plate has three functions; to transfer drive from the crankshaft to the transmission, to transfer drive from the starter motor to the crankshaft and to provide the engine management system with crankshaft speed and position via a reluctor ring and a sensor.
The drive plate is secured to the crankshaft flange with 10 bolts and is located with a dowel to ensure the correct timing of the reluctor ring to the crankshaft orientation.
The drive plate is a pressed and cast steel fabrication, which comprises a cast steel starter ring gear and a pressed steel drive plate and reluctor ring. The two components are riveted together as one assembly.
Four holes in the drive plate provide for the attachment of the transmission torque converter to transfer drive from the crankshaft to the transmission.
The reluctor ring has 60 teeth with 2 teeth missing to provide a gap. A Crankshaft Position (CKP) sensor is located in the oil pan casting and measures speed and position as the reluctor ring rotates. Refer to: Electronic Engine Controls (V6 S/C 3.0L Petrol, Description and Operation).