Index Subaru Subaru Impreza 3 / Impreza WRX / Impreza WRX STI - service repair manual 2008-2014 year
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ME(STI)-70 Cylinder Head MECHANICAL 19.Cylinder Head A: REMOVAL 1) Remove the engine from the vehicle. <Ref. to ME(STI)-30, REMOVAL, Engine Assembly.> 2) Remove the rear side belt. <Ref. to ME(STI)-40, REAR SIDE BELT, REMOVAL, V-belt.> 3) Remove the intake manifold. <Ref. to FU(STI)- 17, REMOVAL, Intake Manifold.> 4) Remove the crank pulley. <Ref. to ME(STI)-47, 5) Remove the timing belt cover. <Ref. to ME(STI)- 49, REMOVAL, Timing Belt Cover.> 6) Remove the timing belt. <Ref. to ME(STI)-50, 7) Remove the cam sprocket. <Ref. to ME(STI)-59, 8) Remove the secondary air combination valve. <Ref. to EC(STI)-29, REMOVAL, Secondary Air 9) Remove the bolts which secure A/C compressor bracket to cylinder head. 10) Remove the oil pipe. <Ref. to LU(STI)-25, RE- 11) Remove the camshaft. <Ref. to ME(STI)-61, 12) Remove the oil level gauge guide. (LH side only) 13) Remove the cylinder head bolts in alphabetical order shown in the figure. Leave the bolts (A) and (D) engaged by three or four threads to prevent the cylinder head from fall- ing. 14) While tapping the cylinder head with a plastic hammer, separate it from cylinder block. Remove the bolts (A) and (D) to remove cylinder head. 15) Remove the cylinder head gasket. Be careful not to scratch the mating surface of cylinder head and cylinder block. B: INSTALLATION 1) Install the cylinder head to the cylinder block. Be careful not to scratch the mating surface of cylinder head and cylinder block. Use a new cylinder head gasket. (1) Clean the bolt threads and the bolt holes in the cylinder block CAUTION: To avoid erroneous tightening of the bolts, clean out the bolt holes sufficiently by blowing with compressed air to eliminate engine cool- ant etc. (2) Apply a sufficient coat of engine oil to the washer and bolt thread. (3) Tighten all bolts to 40 N·m (4.1 kgf-m, 29.5 ft-lb) in alphabetical order. ME-05983 (F) (D) (C) (E) (B) (D) (F) (A) (B) (E) (C) (A) ME-05983 (F) (D) (C) (E) (B) (D) (F) (A) (B) (E) (C) (A) |