Oil Pump
The lubrication system is designed to provide optimum oil flow to critical components of the engine through its entire operating range.
The heart of the system is a positive displacement internal gear oil pump.
Generically, this design is known as a gerotor pump, which operates as follows
- The oil pump is mounted on the front face of the cylinder block.
- The inner rotor is piloted on the crankshaft post and is driven through flats on the crankshaft.
- System pressure is limited by an integral, internally-vented relief valve which directs the bypassed oil back to the inlet side of the oil pump.
- Oil pump displacement has been selected to provide adequate volume to make sure of correct oil pressure both at hot idle and maximum speed.
- The relief valve calibration protects the system from excessive pressure during high-viscosity conditions.
- The relief valve is designed to provide adequate connecting rod bearing lubrication under high-temperature and high-speed conditions.
Scheme 1428
| Item | Part Number | Description |
|---|---|---|
| 1 | 6600 | Oil pump |
| 2 | 6622 | Oil pump screen and pickup tube |
| 3 | 6K868 | Piston oil cool valve |
| 4 | 6303 | Crankshaft |
| 5 | 6C364 | Engine main bearing cap support |
| 6 | 6675 | Oil pan |
| 7 | 6714 | Oil filter |
| 8 | 6881 | Oil filter adapter |
| 9 | 9278 | Engine Oil Pressure (EOP) switch |
| 10 | 6049 | LH cylinder head |
| 11 | 6250 | Exhaust camshaft |
| 12 | 6250 | Intake camshaft |
| 13 | 6A258 | LH camshaft cap |
| 14 | 6K602 | LH valve train oil feed tube |
| 15 | 6K254 | LH secondary timing chain tensioner |
| 16 | 6B280 | LH camshaft mega cap |
| 17 | 6M280 | LH intake and exhaust camshaft Variable Camshaft Timing (VCT) oil control solenoid |
| 18 | 6C525 | LH exhaust camshaft VCT |
| 19 | 6C524 | LH intake camshaft VCT |
| 20 | 6A280 | RH camshaft cap |
| 21 | 6K602 | RH valve train oil feed tube |
| 22 | 6C270 | RH secondary timing chain tensioner |
| 23 | 6B280 | RH camshaft mega cap |
| 24 | 6M280 | RH intake and exhaust camshaft VCT oil control solenoid |
| 25 | 6C525 | RH exhaust camshaft VCT |
| 26 | 6C524 | RH intake camshaft VCT |
| 27 | 6049 | RH cylinder head |
| 28 | 6010 | Cylinder block |
| 29 | 6K254 | Primary timing chain tensioner |