Lubrication System
The engine lubrication system is of the force-feed type in which oil is supplied under full pressure to the crankshaft, connecting rod bearings, timing chain tensioners, camshaft bearing caps and VCT solenoids. The flow of oil to the valve tappets and valve train is controlled by a restricting orifice located in the cylinder head gasket.
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 chain driven off of the crankshaft. The oil pump is chain driven off of 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. 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. 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 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. The relief valve is designed to provide adequate connecting rod bearing lubrication under high temperature and high-speed conditions.
Scheme 192
| Item | Part Number | Description |
|---|---|---|
| 1 | 6750 | Oil level indicator |
| 2 | W500301 | Ignition coil-on-plug bolt (4 required) |
| 3 | 12A366 | Ignition coil-on-plug (4 required) |
| 4 | 12405 | Spark plug (4 required) |
| 5 | 6766 | Oil fill cap |
| 6 | 6N958 | Engine appearance cover retainer |
| 7 | 6M293 | Valve cover |
| 8 | W701219 | Camshaft position (CMP) sensor bolt (2 required) |
| 9 | 12K073 | CMP sensor (2 required) |
| 10 | W500213 | Variable valve timing (VVT) unit oil control solenoid bolt (2 required) |
| 11 | 6M280 | VVT unit oil control solenoid (2 required) |
| 12 | W703383 | Camshaft front bearing cap bolt (19 required) |
| 13 | 6B280 | Camshaft front bearing cap |
| 14 | W714885 | Exhaust camshaft rear bearing cap bolt (2 required) |
| 15 | 6B284 | Exhaust camshaft rear bearing cap |
| 16 | 6A284 | Exhaust camshaft rear bearing cap (8 required) |
| 17 | 6279 | VVT unit bolt (2 required) |
| 18 | 6C525 | Exhaust VVT unit |
| 19 | 6256 | Intake VVT unit |
| 20 | 6C262 | Camshaft seal (4 required) |
| 21 | 6A272 | Exhaust camshaft |
| 22 | 6A271 | Intake camshaft |
| 23 | 9K540 | Fuel injection pump noise insulator shield |
| 24 | W503297 | Fuel injection pump bolt (2 required) |
| 25 | 9D376 | Fuel injection pump |
| 26 | 9C587 | Fuel injection pump roller tappet |
| 27 | 9A413 | Fuel injection pump cover |
| 28 | W714909 | Fuel injection pump cover stud bolts (3 required) |
| 29 | 9J332 | High pressure fuel tube |
| 30 | W503281 | Throttle body (TB) bolt (4 required) |
| 31 | 9E926 | TB |
| 32 | 9424 | Intake manifold |
| 33 | W500311 | Intake manifold bolt (6 required) |
| 34 | 8K556 | Coolant outlet connector assembly |
| 35 | W500015 | Coolant outlet connector assembly bolt (4 required) |
| 36 | 9F972 | FRP sensor |
| 37 | W500311 | Fuel rail bolt (4 required) |
| 38 | 6500 | Valve tappet (16 required) |
| 39 | 6065 | Cylinder head bolt (10 required) |
| 40 | 6518 | Valve spring retainer key (32 required) |
| 41 | 6514 | Valve spring retainer (16 required) |
| 42 | 6513 | Valve spring (16 required) |
| 43 | 6A517 | Valve stem seal (16 required) |
| 44 | W500033 | Rear engine lift bracket bolt |
| 45 | 17K004 | Rear engine lift bracket |
| 46 | 6049 | Cylinder head |
| 47 | 6507 | Intake valve (8 required) |
| 48 | 6505 | Exhaust valve (8 required) |
| 49 | 6051 | Cylinder head gasket |
| 50 | 17A084 | Front engine lift bracket |
| 51 | W500033 | Front engine lift bracket bolt |
| 52 | 9H487 | Fuel rail |
| 53 | 9U550 | Fuel rail insulator |
| 54 | 8A582 | Coolant bypass hose |
Scheme 193
| Item | Part Number | Description |
|---|---|---|
| 1 | W500015 | Thermostat housing bolt (3 required) |
| 2 | 8592 | Thermostat housing |
| 3 | 12A699 | Knock sensor (KS) (2 required) |
| 4 | W500025 | KS bolt (2 required) |
| 5 | 6K318 | Crankshaft rear seal and retainer |
| 6 | 6N958 | Crankshaft rear seal retainer bolt (6 required) |
| 7 | 6477 | Dual mass flywheel |
| 8 | 6379 | Dual mass flywheel bolt (6 required) |
| 9 | 6375 | Flexplate - dual clutch |
| 10 | 6379 | Flexplate bolt (6 required) |
| 11 | 6A785 | PCV oil separator assembly |
| 12 | W500214 | PCV oil separator assembly bolt (8 required) |
| 13 | 6A636 | Oil filter adapter gasket |
| 14 | 6884 | Oil filter adapter |
| 15 | W500225 | Oil filter adapter bolt (4 required) |
| 16 | 9278 | Oil pressure switch |
| 17 | 6714 | Oil filter |
Scheme 194
| Item | Part Number | Description |
|---|---|---|
| 1 | 6K340 | Crankshaft pulley bolt and washer |
| 2 | 6316 | Crankshaft pulley |
| 3 | W701219 | Crankshaft position (CKP) sensor bolt |
| 4 | 6C315 | CKP sensor |
| 5 | W500320 | Engine front cover bolt |
| 6 | W500215 | Engine front cover bolt (17 required) |
| 7 | W500311 | Engine front cover bolt |
| 8 | W500328 | Engine front cover bolt (3 required) |
| 9 | 6C086 | Engine front cover |
| 10 | W708873 | Engine front cover stud (2 required) |
| 11 | 6K282 | Timing chain tensioner bolt (2 required) |
| 12 | 6K254 | Timing chain tensioner |
| 13 | 6K255 | Timing chain tensioner arm |
| 14 | 6268 | Timing chain |
| 15 | W703643 | Timing chain guide bolt (2 required) |
| 16 | 6K297 | Timing chain guide |
| 17 | 6A895 | Oil pump drive chain |
| 18 | W704397 | Oil pump drive sprocket bolt |
| 19 | W703651 | Oil pump drive chain tensioner bolt and spacer |
| 20 | 6C271 | Oil pump drive chain tensioner |
| 21 | 6378 | Crankshaft pulley washer |
| 22 | 6306 | Crankshaft sprocket |
| 23 | 6378 | Crankshaft pulley washer |
| 24 | W706282 | Oil pump screen and pickup tube bolt (2 required) |
| 25 | 6622 | Oil pump screen and pickup tube |
| 26 | W712022 | Oil pump bolt (4 required) |
| 27 | 6652 | Oil pump drive sprocket |
| 28 | 6600 | Oil pump |
| 29 | W500221 | Coolant pump bolt (3 required) |
| 30 | 8509 | Coolant pump pulley |
| 31 | W500015 | Coolant pump bolt (3 required) |
| 32 | 8501 | Coolant pump |
| 33 | W700115 | Crankshaft timing hole plug |
| 34 | 6200 | Connecting rod (4 required) |
| 35 | 6110 | Piston (4 required) |
| 36 | 6140 | Piston pin retainer (8 required) |
| 37 | 6135 | Piston pin (4 required) |
| 38 | 6161 | Piston oil control ring (4 required) |
| 39 | 6150 | Piston upper compression rings (4 required) |
| 40 | 6152 | Piston lower compression rings (4 required) |
| 41 | 6159 | Piston oil control rings (8 required) |
| 42 | 8597 | Coolant bypass tube |
| 43 | 6010 | Cylinder block |
| 44 | 6211 | Connecting rod upper bearing (4 required) |
| 45 | 6K868 | Piston oil cooler (4 required) |
| 46 | 6333 | Crankshaft main bearing (4 required) |
| 47 | 6337 | Crankshaft main thrust bearing |
| 48 | 6303 | Crankshaft |
| 49 | 6A338 | Crankshaft lower main bearing (5 required) |
| 50 | 6211 | Connecting rod lower bearing (4 required) |
| 51 | 6100 | Connecting rod cap (4 required) |
| 52 | 6214 | Connecting rod bolt (8 required) |
| 53 | 9D047 | Main bearing beam |
| 54 | 6345 | Main bearing beam bolt (10 required) |
| 55 | 6675 | Oil pan |
| 56 | W500224 | Oil pan bolt (11 required) |
| 57 | W706284 | Oil pan bolt (2 required) |
For basic engine mechanical concerns.
REFER to: ENGINE .
For driveability symptoms. INTRODUCTION - GASOLINE MODELS