Engine Lubrication Flow Chart-Block: Table 1
| FROM | TO |
|---|
| Oil Pickup Tube | Oil Pump |
| Oil Pump | Oil Filter |
| Oil Filter | Block Main Oil Gallery |
| Block Main Oil Gallery | Crankshaft Main Journal Left Cylinder Head (1) Right Cylinder Head (1) |
| Crankshaft Main Journals | Crankshaft Rod Journals |
| Crankshaft Number One Main Journal | Front Timing Chain Idler Shaft Both Secondary Chain Tensioners |
| Left Cylinder Head | See ENGINE LUBRICATION FLOW CHART-CYLINDER HEADS |
| Right Cylinder Head | See ENGINE LUBRICATION FLOW CHART-CYLINDER HEADS |
| (1) The cylinder head gaskets have an oil restricter to control oil flow to the cylinder heads. |
| (1) | The cylinder head gaskets have an oil restricter to control oil flow to the cylinder heads. |
ENGINE LUBRICATION FLOW CHART-BLOCK
Engine Lubrication Flow Chart-Cylinder Heads: Table 2
| FROM | TO |
|---|
| Cylinder Head Oil Port (in bolt hole) | Diagonal Cross Drilling to Main Oil Gallery |
| Main Oil Gallery (drilled through head from rear to front) | Base of Camshaft Towers Lash Adjuster Towers |
| Base of Camshaft Towers | Vertical Drilling Through Tower to Camshaft Bearings (1) |
| Lash Adjuster Towers | Diagonal Drillings to Hydraulic Lash Adjuster Pockets |
| (1) The number three camshaft bearing journal feeds oil into the hollow camshaft tubes. Oil is routed to the intake lobes, which have oil passages drilled into them to lubricate the rocker arms. |
| (1) | The number three camshaft bearing journal feeds oil into the hollow camshaft tubes. Oil is routed to the intake lobes, which have oil passages drilled into them to lubricate the rocker arms. |
ENGINE LUBRICATION FLOW CHART-CYLINDER HEADS
Scheme 273
Scheme 273: DIAGNOSIS AND TESTING - ENGINE OIL PRESSURE
- Remove oil pressure sending unit and install gauge assembly C-3292.
- Run engine until thermostat opens.
- Oil Pressure: Curb Idle-25 Kpa (4 psi) minimum 3000 rpm-170 - 550 KPa (25 - 80 psi)
- If oil pressure is 0 at idle, shut off engine. Check for a clogged oil pick-up screen or a pressure relief valve stuck open.
