Contents Wiring diagrams Section: Engine Control Systems All sections

Engine Emission Control: Other Jaguar XJ X351

PART LOAD BREATHER

Item NumberDescription
1Flexible hose
2Baffle plate
3Oil drain
4Positive crankcase ventilation (PCV) valves
5Oil separator

The part load breather consists of an oil separator, two positive crankcase ventilation (PCV) valves and a flexible hose. The oil separator and the positive crankcase ventilation (PCV) valves are installed in the top of the right-hand (RH) cylinder head cover. The flexible hose connects the right-hand (RH) cylinder head cover to the inlet of the supercharger (SC).

The oil separator is installed in a channel in the top of the cylinder head cover. A baffle plate, which incorporates a gas inlet and an oil drain, is installed over the channel. The two positive crankcase ventilation (PCV) valves are installed on the outside of the cylinder head cover and connected in parallel in the gas outlet from the channel to the flexible hose. The positive crankcase ventilation (PCV) valves prevent reverse flow into the cylinder head cover when there is minimal depression in the inlet of the supercharger (SC).

FULL LOAD BREATHER

Item NumberDescription
1Flexible hose
2Two-way valve
3Oil drain
4Baffle plate
5Oil separator

The full load breather consists of an oil separator, a two-way valve and a flexible hose. The oil separator and the two-way valve are installed in the top of the left-hand (LH) cylinder head cover. The flexible hose connects the left-hand (LH) cylinder head cover to the left-hand (LH) air duct of the intake air distribution and filtering system.

The oil separator is installed in a channel in the top of the cylinder head cover. A baffle plate, which incorporates a gas inlet and an oil drain, is installed over the channel. The two-way valve is installed in the gas outlet from the channel. The two-way valve prevents reverse flow into the cylinder head cover when there is minimal depression in the air duct.