LR3/Disco 3
Engine - 4.4L (12.90.09.01)
Special Service Tools
Oil pressure testing adaptor, 303-1166
Oil pressure testing gauge, 303-871
Inspection and Verification
1 . Verify the customer concern.
2 . Visually inspect for obvious signs of mechanical or electrical damage.
3 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step
Oil Pressure check - 4.4l
NOTE :
1 . Disconnect the battery ground cable.
2 .
Remove the oil pressure sensor.
Engine Oil Pressure (EOP) Sensor (12.60.50)
3 . Install the special tool to the oil filter housing.
Published : Jan 19, 2005
Prior to checking the engine oil pressure, a road test of 6 miles (10 kilometres), must be carried out. Do not attempt
to attain engine normal operating temperature by allowing the engine to idle.
WARNING : The spilling of hot engine oil is unavoidable during this procedure, care must be taken to
prevent scalding.
WARNING : Wear protective gloves.
