Lubrication System Flow Diagram

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The engine oil is drawn from the oil pan and pressurized by the variable flow oil pump with integral vacuum pump. The output from the variable flow oil pump with integral vacuum pump passes through oil drilling to be filtered through the oil filter. The output from the oil filter is distributed through oil drilling in the cylinder heads and the cylinder block.

The engine oil lubricates, cools and actuates various engine components. The engine oil lubricates all the moving parts in the engine by pressurized or splashed engine oil. The engine oil also while in contact with the engine components removes heat. In the oil cooler, the heat from the engine oil transferred to the engine coolant.

Pressurized engine oil is distributed from the variable flow oil pump with integral vacuum pump to the following:

• The oil cooler
• The oil filter
• The connecting rod large end bearing (quantity 4)
• The crankshaft main bearing (quantity 5)
• The intake camshaft
• The exhaust camshaft
• The VCT  system
• The piston cooling oil jet (quantity 4) controlled by the piston cooling oil jet solenoid
• The primary timing chain tensioner
• The primary timing chain oil jet
• The secondary timing chain tensioner
• The secondary timing chain oil jet
• The turbocharger
• The hydraulic valve tappets
• The CVVL  assembly
• The timing chain tensioner.

The oil returns to the oil pan under gravity. Large drain holes through the cylinder head and the cylinder block make sure that the engine oil returns rapidly to the oil pan. The engine oil is replenished through the oil filler cap on the camshaft cover. An oil drain plug is installed in the side of the oil pan.