Honda Bmw 5 Service Manual
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Cvlinder Head Removal and Installation / Right cylinder head, installing, M62 engine - Clean cylinder head and block sealing surfaces of gasket de- bris, making sure no debris drops into coolant or oil passag- es. CA UTIOW- To prevent valve to piston contact when tightening camshaft sprocket fasteners, counterhold camshaft with 27 mm open- end wrench. If necessarq: grind outer side of wrench jaws to prevent damaging cylinder head. - Check cylinder head bolt holes and condition of threads. Re- move debris and liquids from holes. 4 Check cylinder head locator sleeves (arrows) for damage CAUTION- lithe cylinder head has been machined, a special 0.3 rnm (0.01 1 in.) thickergasket should be installed. The thickergas- ket is available through an authorized BMW dealer and should be marked accordinglw - Place new cylinder head gasket over locating sleeve on block. < The word OBEN or TOP (arrow) printed on the gasket. must face up. CAUTION- Male sure the crankshaft, which had been rotated approxi- mately 45 opposite the direction of engine rotation from TDC, is stillin thatposition before installing the cylinder head. All pistons must be out of TDCposition to prevent valve/pis- ton contact - Install new cylinder head bolts and washers finger tight. Be sure not to remove coating from bolts. 4 Tighten cylinder head bolts in correct sequence (1 -10) to stage 1 torque values.
11 3-78 Cylinder Head Removal and Installation 4 Using a torque angle gauge, tighten cylinder head bolts to specified torque angle in stages 2 and 3. Tiahtenina toraues - -. Stage I 30 Nm (22 ft-lb) Stage I1 Stage Ill 4 Using BMW special tool 11 3 430, or a 27 mm open-ended wrench, rotate camshafts until marker bores (drilled holes) point upwards (arrows). Do not damage cylinder head with wrench. If necessary. grind outer side of wrench jaws to prevent damaging cylinder head. 4 Install camshaft locking tool set (BMW special tool set 11 2 440) on right cylinder head. Fit tools on cyllnder heads with- out gaps. 4 Install camshaft locking tool set (BMW special tool set 11 2 440) on left cylinder head. Fit tools on cylinder head without
-8 . Cylinder Head Removal and Installation -- Using crankshaft center bolt, rotate engine clockwise from the 45 before TDC up to TDC position (OIT aligns with cast- ing mark on cylinder block). < Lock crankshaft in TDC position with BMW special tool 11 3 200 (arrow). NOTE- Special tool boss located at the rear of upper engine oil pan. - Working at right cylinder head (cylinder 5-8) fit primary sprocltet and chain to camshaft flange. ! I 4 Press timing chain tensioner rail against timing chain (white arrow) to check that fastener holes are centered in sprocket slots (black arrows). NOTE- If necessary, remove sprocl
11 3-80 Cylinder Head Removal and lnstallation I I 4 Install BMW special tool 11 7 380 4 Install special tool 11 3 390 into special tool 11 7 380 and tighten tensioner (1 1 3 390) to 0.7 Nm (6.3 in-lb) using spe- cial tool 00 9 250. NOTE- BMW special tool 00 9 250 is a flexible shaft torque wrench. - Tighten sprocket retaining bolts in the following order: 3 accessible bolts on left exhaust camshaft - All bolts on right exhaust camshaft 3 accessible bolts on left intake camshaft All bolts on right intake camshaft Tightening torque Sprocitet bolts to camshaft flange 15 Nm (11 ft-lb) - Remove camshaft and crankshaft locking tools from engine. - Using crankshaft center bolt, turn engine clockwise to access remaining sprocket retaining bolts of left cylinder head cam- shafts. Tighten remaining bolts. Tightening torque Sprocket bolts to camshaft flange 15 Nm (11 ft-ib) - Remove BMW special tool 11 3 390 and 11 7 380 from right cylinder head. - Remove used gasket from right timing chain cover, clean gasket surface. 4 Install new gasket and apply three Bond 1209 @sealant to joint between cylinder head and timing cover (arrows).
Cylinder Head Removal and Installation 1 Replace sealing O-ring (arrow) in right cylinder head before installing upper timing chain cover. 4 Install oil supply lines and mounting nuts on both heads (ar- rows). - Using a new gasket, install upper timing chain cover on right head and tighten cover fasteners finger tight. 4 Remove right cylinder head cover gasket and install spacing tool (BMW 11 1 41 1) in place of gasket. - Install right cylinder head cover fasteners and tighten uni- formly in 1, turn steps. Tightening torque Cylinder head cover fasteners 10 Nm (7.5 ft-lb) - Tighten right upper timing cover retaining fasteners in two passes. I Tightening torque Upper timing chain cover 10 Nm (7.5 ft-lb) - Reinstall primary timing chain tensioner with new sealing washer. Tightening torque Chain tensioner to timing cover 65 Nm (48 ft-lb) - Remove right cylinder head cover and remove special spac- ingtooi 11 4411.
1 13-82 1 Cylinder Head Removal and Installation 4 Reinstall cylinder head covers to right and left cylinder heads using new gaskets. Check for correct seating of half-moon seals (A) in back of cylinder head cover. Use a small amount of Three Bond 1209 8 or equivalent sealer at corners (B) of half-moon cutouts. - Install cylinder head cover fasteners and tighten uniformly in I2 turn steps. Tightening torque Cvlinder head cover fasteners 10 Nm (7.5 It-lb) - Install exhaust manifolds using new gaskets and fasteners. See 180 Exhaust System. - Refill and bleed cooling system as described in 170 Radiator and Cooling System. - Change engine oil and filter as described in 020 Mainte. nance. CA UTIOW- To prevent damaging engine electricalsystems, be sure to in- stall all ground wires previously removed. Tightening tOrqUeS Camshaft sprocket to camshaft 15 Nm (1 1 ft-lb) Coolant manifold to cylinder head lo Nm (7.5 It-lb) Cylinder head cover nuts 10 Nm (7.5 ft-lb) Exhaust manifold to head 22 Nm (17 ft-lb) Engine mount to subframe 42 Nm (30 ft-lb) Spark plugs to cylinder head 22 Nm (17 ft-lb)
11 6 Cylinder Head and Valvetrain ........................... General ............................ 1 16-2 Valves 116-56 .................... Special Tools ........................ 11 6-2 Valves. leak test 11 6-56 ......... Valves. removing and installing 11 6-56 Cylinder Head ..................... .I1 6.5 ....................... Valve guides 11 6-57 Valves. leak test ...................... 11 6-6 Valve stem oil seals .................. 11 6-58 ...... ...ll 6.6 Valveseats ........................ 116-59 Hydraulic lifters, checking and replacing .. .I1 6-7 Valve ....................... 6-60 . . Camshaft andLifter Removal and Installation .................... 11 6-1 1 Camshaft and lifter removal and installation (M52 engine) ............. .I1 6.12 Camshaft and lifter. removal and installation (M52 TU and M54 engine) .... 11 6-1 9 Double VANOS timing chain components . 11 6-28 Camshaft removal and installation (M62 engine) ....................... 11 6-39
This group covers cylinder head and valvetrain service and repair. Some of the repair procedures described here require that the cylinder head first be removed as described in 113 Cylinder Head Removal and Installation. NOTE- For timing chain and VANOS repair information, see 117 Camshaft Timing Chain. If it is determined that the cylinder head will require signif- icant reconditioning work, a remanufactured cylinder head may be a good alternative. Remanufactured cylinder heads are available from an authorized BMW dealer. The information given in this repair group is organized ac- cording to engine code. For engine application information, see I00 Engine-General. For specific repair procedures, refer to the appropriate repair group: * 020 Maintenance 100 Engine-General 113 Cylinder Head Removal and Installation 117 Camshafi Timing Chain = 170 Radiator and Coo!ing System Special Tools Special BMW tools are required for most cylinder head ser- vice described in this repair group. Many of these tools are ex- pensive and only available through an authorized BMW dealer. If the special tools are not available, have the cylinder head removed and disassembled by an authorized BMW dealer. Be sure to read each procedure thoroughly before starting a job to determine which special tools and equipment will be necessary. Most of the repairs to a cylinder head require precision rna- chine work to specific tolerances. This type of work should be performed by an authorized BMW repairfacility or an ASE certified machinist. 71 Torque wrench with flex shaft
1 16-3 Cylinder Head and Valvetrain 4 Cranltshaft loclting tool (Tool No. BMW 11 2 300) 4 Camshaft loclting tools set (V-8, cyl. 1-4) (Tool No. BMW 11 2 440) 4 Camshaft locking tools set (V-8, cyl. 5-8) (Tool No. BMW 11 2 440) 4 Camshaft loclting tools set (6-cylinder) 1 (Tool No. BMW 11 3 240) 4 Camshaft bearing cap tensioning jig (6-cylinder) ITool NO. BMW 11 3 260/27n
/cylinder Head and Valvetrain Secondary timing chain tensioner locking pin set (6-cylinder) - 4 Secondary timing chain tensioner locking pin (V-8) (Tool No. BMW 11 3 310) 4 Adjustable primary timing chain tensioner tool (V-8) (Tool No. BMW 11 3 390) 4 Camshaft installation tool (V-8) (Tool No. BMW 11 3 430) 4 VANOS compressed air fitting 7 (Tool No. BMW 11 3 450) Adjustable primary timing chain tensioner tool (6-cylinder) (Tool No. BMW 11 4 220)