Camshaft Carrier
| Item | Description |
|---|---|
| 1 | Rear Continuous Variable Valve Lift (CVVL) assembly |
| 2 | Front CVVL assembly |
| 3 | Oil filler cap |
| 4 | Engine vent oil separator |
| 5 | Camshaft carrier |
| 6 | Intake camshaft |
| 7 | Exhaust camshaft |
| 8 | Camshaft cap (quantity 12) |
| 9 | Nut - Camshaft cap (quantity 28) |
| 10 | Rear camshaft cap |
| 11 | Variable Camshaft Timing (VCT) actuator - Exhaust |
| 12 | Bolt - VCT actuator |
| 13 | VCT actuator - Intake |
The structural camshaft carrier is cast from aluminum alloy using a high pressure die cast process. The camshaft carrier is located on 2 dowel pins in the cylinder head and secured with bolts. A steel gasket seals the camshaft carrier to the cylinder head.
The primary function of the camshaft carrier is to house and secure the intake and exhaust camshafts. The camshaft carrier bore geometry is bored in a single machining operation. Each camshaft cap is uniquely identified and must be matched to its related bore.
The camshaft carrier also provides locations for the Camshaft Position (CMP) sensors, the oil filler pipe and the engine vent oil separator. The camshaft carrier has high pressure oil bores feeding the Variable Camshaft Timing (VCT) actuators and provides thrust face lubrication. A low pressure oil gallery returns oil from the engine vent module back to the cylinder block and the oil pan.