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

Subaru Legacy BN/BS (2015-2019) Service Manual / Mechanical(h6do) / Camshaft / Inspection

1. Measure the bend, and repair or replace if necessary.

Camshaft bend limit:

0.020 mm (0.00079 in)

2. Check the journal for damage and wear. Replace if faulty.

3. Check the cutout portion used for camshaft sensor for damage. Replace if faulty.

4. Check the cam face condition; remove the minor faults by grinding with oil stone. Replace if there is uneven wear or others.

5. Measure the cam lobe height “H” and cam base circle diameter “A”. If it exceeds the standard or offset wear occurs, replace it.

Cam lobe height H:

Standard

Intake

45.90 — 46.00 mm (1.8071 — 1.8110 in)

Exhaust

44.65 — 44.75 mm (1.7579 — 1.7618 in)

Cam base circle diameter A:

Standard

Intake

36.00 mm (1.4173 in)

Exhaust

36.00 mm (1.4173 in)

6. Measure the outside diameter of camshaft journal. If the journal diameter is not within specification, check the oil clearance.

Camshaft journal

Front

Except for front

Standard

mm (in)

37.946 — 37.963
(1.4939 — 1.4946)

25.946 — 25.963
(1.0215 — 1.0222)

7. Measure the oil clearance of camshaft journal.

(1) Clean the camshaft cap and cylinder head camshaft journal.

(2) Place the camshaft on cylinder head. (Without installing the valve lifter)

(3) Place a plastigauge across each camshaft journals.

(4) Gradually tighten the camshaft cap in at least two stages in the numerical order shown in the figure, then tighten to specified torque. Do not turn the camshaft.

Tightening torque:

(1) — (12): 16 N·m (1.6 kgf-m, 11.8 ft-lb)

(13) — (17): 9.75 N·m (1.0 kgf-m, 7.2 ft-lb)

(5) Remove the camshaft cap.

(6) Measure the widest point of the plastigauge on each journal. If oil clearance exceeds the standard, replace the camshaft. If necessary, replace the camshaft caps and cylinder head as a set.

Camshaft oil clearance:

Standard

0.037 — 0.072 mm (0.0015 — 0.0028 in)

(7) Completely remove the plastigauge.

8. Measure the thrust clearance with setting the dial gauge at end surface of camshaft. If the thrust clearance is not within the standard or there is offset wear, replace the camshaft caps and cylinder head as a set. If necessary replace the camshaft.

Camshaft thrust clearance:

Standard

Intake

0.075 — 0.135 mm (0.0030 — 0.0053 in)

Exhaust

0.075 — 0.135 mm (0.0030 — 0.0053 in)

Removal

1. Remove the engine from vehicle. Engine Assembly > REMOVAL2. Remove the crank pulley. Crank Pulley > REMOVAL3. Remove the chain cover. Chain Cover > REMOVAL4. Remove the timing chain assembly. T ...

Installation

1. Apply engine oil to camshaft journals, and install the camshaft.2. Install the camshaft cap.(1) Apply liquid gasket sparingly to back side of the front camshaft cap as shown in the figure.NOTE:&bul ...

Other materials:

RAB warning indicator (if equipped)
This indicator illuminates if the Reverse Automatic Braking System malfunctions. Refer to "Reverse Automatic Braking System" . RAB OFF indicator (if equipped) This indicator illuminates when the Reverse Automatic Braking System is turned OFF, or when the Reverse Automatic Braking System i ...