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Subaru Legacy Service Manual: Engine oil pressure inspection

Subaru Legacy Service Manual / Mechanical(h6do) / Engine oil pressure inspection

1. Disconnect the ground terminal from battery sensor. NOTE

2. Remove the oil pressure switch from the oil pan upper. Oil Pressure Switch > REMOVAL

3. Attach the oil pressure gauge to the oil pan upper.

4. Connect the ground terminal to battery sensor. NOTE

5. Refill the engine oil. Engine Oil > REPLACEMENT

6. Start the engine, and check the oil pressure.


If the oil pressure is out of specification, check oil pump, oil filter and lubrication line. Engine Lubrication System Trouble in General

If the oil pressure warning light is ON and oil pressure is within specification, check the oil pressure switch. Oil Pressure System Oil Pressure Switch

Engine oil pressure (at oil temperature of 80°C (176°F)):


100 kPa (1.0 kg/cm2, 15 psi) or more (at 700 r/min)
500 kPa (5.1 kg/cm2, 73 psi) or more (at 5,000 r/min)

7. After inspection, install the related parts in the reverse order of removal.

Engine noise inspection
Type of soundConditionPossible causeRegular clicking soundSound increases as engine speed increases.• Valve mechanism is defective• Incorrect valve clearance• Worn camshaft• Br ...

Engine trouble in general inspection
NOTE:The “RANK” shown in the chart shows the possibilities of the cause of trouble in order from “Very often” to “Rarely”.A — Very oftenB — SometimesC — Rarel ...

Other materials:

1. Clean the mating surface of transmission case and converter case.2. Install the control device system. Transmission Control Device > INSTALLATION3. Install the O-ring to the lubrication pipe.NOTE:• Use new O-rings.• Apply CVTF to the O-rings.4. Make sure the lubrication pipe and supp ...

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