Subaru Legacy BN/BS (2015-2019) Service Manual: Adjustment

Subaru Legacy BN/BS (2015-2019) Service Manual / Mechanical(h6do) / Valve clearance / Adjustment

1. INTAKE SIDE

1. Remove the engine from the vehicle. Engine Assembly > REMOVAL

2. Measure all the valve clearances. Valve Clearance > INSPECTION

NOTE:

Record each valve clearance after measurement.

3. Remove the timing chain assembly. Timing Chain Assembly > REMOVAL

4. Remove the cam sprocket. Cam Sprocket > REMOVAL

5. Remove the camshaft. Camshaft > REMOVAL

6. Remove the valve lifter.

7. Measure the thickness of valve lifter using micrometer.

8. Select a valve lifter of suitable thickness using the measured valve clearance and valve lifter thickness, and install it.

NOTE:

Use a new valve lifter.

S = (V + T) − 0.20 mm (0.0079 in)

S: Valve lifter thickness required

V: Measured valve clearance

T: Current valve lifter thickness

9. Install the camshaft. Camshaft > INSTALLATION

10. Install the cam sprocket. Cam Sprocket > INSTALLATION

11. Install the timing chain assembly. Timing Chain Assembly > INSTALLATION

12. Measure all valve clearance again at this time. If the valve clearance is not within the adjustment value, repeat the procedure from step 3).

Valve clearance (adjustment value):

0.20+0.04 −0.06 mm (0.0079+0.0016 −0.0024 in)

13. After adjustment, install the related parts in the reverse order of removal.

NOTE:

Refer to “Camshaft” when installing the rocker cover. Camshaft > INSTALLATION

2. EXHAUST SIDE

1. Remove the engine from the vehicle. Engine Assembly > REMOVAL

2. Measure all the valve clearances. Valve Clearance > INSPECTION

NOTE:

Record each valve clearance after measurement.

3. Remove the camshaft. Camshaft > REMOVAL

4. Remove the valve lifter.

5. Measure the thickness of valve lifter using micrometer.

6. Select a valve lifter of suitable thickness using the measured valve clearance and valve lifter thickness, and install it.

NOTE:

Use a new valve lifter.

S = (V + T) − 0.35 mm (0.0138 in)

S: Valve lifter thickness required

V: Measured valve clearance

T: Current valve lifter thickness

7. Install the camshaft. Camshaft > INSTALLATION

8. Install the cam sprocket. Cam Sprocket > INSTALLATION

9. Install the timing chain assembly. Timing Chain Assembly > INSTALLATION

10. Measure all valve clearance again at this time. If the valve clearance is not within the adjustment value, repeat the procedure from step 3).

Valve clearance (adjustment value):

0.35±0.05 mm (0.0138±0.0020 in)

11. After adjustment, install the related parts in the reverse order of removal.

NOTE:

Refer to “Camshaft” when installing the rocker cover. Camshaft > INSTALLATION

Inspection

CAUTION:If engine oil is spilt onto the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.NOTE:Inspection of valve clearance should be performed while engine is cold.1. ...

V-belt

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