Lubrication System
The engine lubrication system operates as follows
- Oil is drawn into the oil pump through the oil pump screen cover and tube in the sump of the oil pan.
- Oil is pumped through the oil filter on the left front side of the cylinder block.
- Oil enters the main galley where it is distributed to the crankshaft main journals and to the cylinder head.
- From the main journals, the oil is routed through cross-drilled passages in the crankshaft to lubricate the connecting rod bearings. Controlled leakage through the crankshaft main bearings and connecting rod bearings is slung radially outward to cool and lubricate the cylinder walls, as well as the entire connecting rod, piston and piston ring assembly.
Refer to ENGINE SYSTEM-GENERAL INFORMATION for basic mechanical concerns or refer to the INTRODUCTION -- ESCAPE HYBRID & MARINER HYBRID for driveability concerns.
Scheme 671
- Remove the valve cover. For additional information, refer to «VALVE COVER»(ref-344118-S41440364292009101600000) .
- Remove the 5 bolts, the pin-type retainer (not shown) and the RH splash shield. To install, tighten to 9 Nm (80 lb-in).
- Use a feeler gauge to measure the clearance of each valve and record its location.
- The acceptable clearances after being fully installed are: intake: 0.22-0.28 mm (0.008-0.011 in). exhaust: 0.27-0.33 mm (0.010-0.013 in). Select tappets using this formula: tappet thickness = measured clearance + the existing tappet thickness - nominal clearance. Select the closest tappet size to the ideal tappet thickness available and mark the installation location.
- If any tappets do not measure within specifications, install new tappets in these locations. For additional information, refer to «VALVE TRAIN COMPONENTS - EXPLODED VIEW»(ref-344118-S03789054512009101600000) and «VALVE TAPPETS»(ref-344118-S21680714332009101600000) .
Engine Lubrication Components - Exploded View
Oil Filter Adapter, Oil Filter Element and Engine Oil Pressure (EOP) Switch (view 1 of 2)
Scheme 672
| Item | Part Number | Description |
|---|---|---|
| 1 | 14A464 | Engine Oil Pressure (EOP) switch electrical connector (part of 12C508) |
| 2 | 9278 | EOP switch |
| 3 | 6C684 | Oil filter drain plug |
| 4 | W707718 | Oil filter drain plug O-ring seal |
| 5 | 6A832 | Oil filter cover |
| 6 | 6885 | Oil filter cover O-ring seal |
| 7 | 6744 | Oil filter element |
| 8 | W500225 | Oil filter adapter bolt (4 required) |
| 9 | 6884 | Oil filter adapter |
| 10 | 6A636 | Oil filter adapter gasket |
ITEM DESCRIPTION CHART
Oil Filter Adapter, Oil Filter and Engine Oil Pressure (EOP) Switch (view 2 of 2)
Scheme 673
| Item | Part Number | Description |
|---|---|---|
| 1 | 14A464 | Engine Oil Pressure (EOP) switch electrical connector (part of 12C508) |
| 2 | 9278 | EOP switch |
| 3 | 6731 | Oil filter |
| 4 | W500225 | Oil filter adapter bolt (4 required) |
| 5 | 6884 | Oil filter adapter |
| 6 | 6A636 | Oil filter adapter gasket |
ITEM DESCRIPTION CHART
Oil Pan, Oil Pump Screen and Pickup Tube
Scheme 674
| Item | Part Number | Description |
|---|---|---|
| 1 | 6730 | Drain plug |
| 2 | W706284 | Oil pan bolt (2 required) |
| 3 | W500122 | Oil pan-to-bellhousing bolt (2 required) |
| 4 | W500122 | Bellhousing-to-oil pan bolt (2 required) |
| 5 | W500224 | Oil pan bolt (11 required) |
| 6 | 6675 | Oil pan |
| 7 | W706282 | Oil pump screen and pickup tube bolt (2 required) |
| 8 | 6622 | Oil pump screen and pickup tube |
| 9 | 6625 | Oil pump screen and pickup tube gasket |
ITEM DESCRIPTION CHART
Oil Pump
Scheme 675
| Item | Part Number | Description |
|---|---|---|
| 1 | W703651 | Oil pump drive chain tensioner shoulder bolt (2 required) |
| 2 | 6C271 | Oil pump drive chain tensioner |
| 3 | 6A895 | Oil pump drive chain |
| 4 | W704397 | Oil pump sprocket bolt |
| 5 | 6652 | Oil pump sprocket |
| 6 | W703647 | Oil pump bolt (4 required) |
| 7 | 6600 | Oil pump |
ITEM DESCRIPTION CHART
- For additional information, refer to the appropriate procedures.