Subaru Legacy BN/BS (2015-2019) Service Manual: Removal
NOTE: Before conducting this procedure, drain the engine oil completely. 1. Remove the engine from vehicle. Engine Assembly > REMOVAL 2. Remove the crank pulley. Crank Pulley > REMOVAL 3. Remove the chain cover. Chain Cover > REMOVAL 4. Remove the timing chain assembly. Timing Chain Assembly > REMOVAL 5. Remove the cam sprocket. Cam Sprocket > REMOVAL 6. Remove the crank sprocket. Crank Sprocket > REMOVAL 7. Remove the camshaft. Camshaft > REMOVAL 8. Remove the cylinder head. Cylinder Head > REMOVAL 9. Remove the drive plate. Drive Plate > REMOVAL 10. Remove the crankshaft position sensor.
11. Remove the crankshaft position sensor plate.
12. Rotate the engine to set oil pan upper. 13. Remove the bolts which secure oil pan lower to oil pan upper.
14. Insert an oil pan cutter blade into the gap between oil pan upper and oil pan lower, and remove the oil pan lower. CAUTION: Do not use a screwdriver or similar tools in place of oil pan cutter. 15. Remove the oil cooler connector and remove the oil cooler.
16. Remove the oil pump. Oil Pump > REMOVAL 17. Remove the oil level switch. Oil Level Switch > REMOVAL 18. Remove the thermostat cover, and then remove the thermostat.
19. Remove the oil pan upper.
20. Face the front of the engine up, standing the engine on one end.
21. Remove ten O-rings from the underside of the cylinder block.
22. Mark the direction of front and the number of connecting rod caps. 23. Remove the #1 and #4 connecting rod caps and pistons from the cylinder block. NOTE: • Use 3/8 inch (9.5 sq.) for the extension and TORX® socket (E12). • After removing the two connecting rod connection bolts, turning the crankshaft (ST) counterclockwise will remove the connecting rod cap. • Mark each connecting rod cap and piston with connecting rod cap number and piston number. • The removal of all connecting rod caps and pistons are performed in three separate steps. First, remove the #1 and #4 connecting rod caps and pistons are simultaneously, then the #2 and #5 connecting rod caps and pistons simultaneously, and then the #3 and #6 connecting rod caps and pistons simultaneously. (1) Using the ST, turn the crankshaft and set the #1 piston at the mid point between TDC and BDC.
(2) Remove the two #1 connecting rod cap connection bolts, and remove the connecting rod cap.
(3) Remove the two #4 connecting rod cap connection bolts, and remove the connecting rod cap.
(4) Using the ST, turn the crankshaft and separate the positions of the crank pin and the large end of the #1 connecting rod.
(5) Push the #1 connecting rod in the direction of the arrow, and remove the #1 piston and connecting rod from the cylinder block.
(6) Using the ST, turn the crankshaft and separate the positions of the crank pin and the large end of the #4 connecting rod.
(7) Push the #4 connecting rod in the direction of the arrow, and remove the #4 piston and connecting rod from the cylinder block.
24. Remove the #2 and #5 connecting rods and pistons from the cylinder block in the same manner.
25. Remove the #3 and #6 connecting rods and pistons from the cylinder block in the same manner.
26. Face the cylinder block (RH) up.
27. Remove the upper bolt.
28. Loosen the cylinder block bolts in the order indicated in the figure, and separate cylinder block (RH) and (LH). NOTE: Confirm that the crankshaft is remaining in the cylinder block (LH). If the cylinder block (RH) is lifted carelessly when separating, the crankshaft may stick to cylinder block (RH), then fall off.
29. Remove the rear oil seal. 30. Remove the crankshaft from cylinder block (LH). 31. Remove the crankshaft bearings from cylinder block using a hammer handle. NOTE: • Do not confuse the combination of crankshaft bearings. • Press the bearing at the end opposite to locking lip. |
Cylinder block
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Assembly
(1)Connecting rod(2)Connecting rod bearing(3)Piston(4)Piston pin(5)Circlip(6)Oil ring(7)Second ring(8)Top ring1. Apply engine oil to the surface of the connecting rod bearing. Attach the connecting ro ...
Other materials:
Installation
CAUTION:• Do not start the engine before charging refrigerant.• If the engine is started with no refrigerant charge, replace the compressor assembly.• Replace O-rings and pipe clamps with new parts and install securely.• Before handling the airbag system components, refer to ...
