Honda Bmw 5 Service Manual
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. - - -- Cylinder Head and valvetrain]
Turn engine over twice in direction of rotation until cylinder 1
intake and exhaust camshaft lobes (arrows) face each other.
- Lock crankshaft in TDC position with BMW special tool
11 2 300.
4 Place BMW special tool set 11 3 240 over camshafts and
measure clearances.
NOTE-
@ If the exhaust side of the tool (A) is not flush with the head,
camshaft timing is incorrect. Reset camshaft timing as de-
scribed in 11
7 Camshaft Timing...](http://img.usermanuals.tech/thumb/34/100712/w64_bmw-5-service-manual-1509562501_d-212.png "Page 213
-
. - - -- Cylinder Head and valvetrain]
Turn engine over twice in direction of rotation until cylinder 1
intake and exhaust camshaft lobes (arrows) face each other.
- Lock crankshaft in TDC position with BMW special tool
11 2 300.
4 Place BMW special tool set 11 3 240 over camshafts and
measure clearances.
NOTE-
@ If the exhaust side of the tool (A) is not flush with the head,
camshaft timing is incorrect. Reset camshaft timing as de-
scribed in 11
7 Camshaft Timing...")
. . Cylinder Head and Valvetrain Install exhaust camshaft impulse wheel, aligning pointer (B) with top edge of cylinder head (A). Install mounting nuts (ar- rows) finger tight. 4 Pull out exhaust camshaft splined shaft to stop. - Press down on secondary chain tensioner and remove ten- sioner lock-down tool. Preload primary chain: - Tighten adjusting screw on BMW special tool 11 4 220 to specified torque. Tightening torque Primary chain tensioner preload 0.7 Nm (6 in-lb)
1 16-36 I Cylinder Head and Valvetrain 4 Preload exhaust camshaft spring plate by pressing on im- pulse wheel while tightening mounting nuts (arrows) fingel tight. 4 Install BMW special tool 11 6 150 (VANOS setup bracket) to front of cylinder head timing case. Install nuts (arrows) finger tight, then tighten down uniformly until special tool is in full contact with cylinder head. CAUTION-- Male sure aNgas1ef material Is removed from face of cyiin- der head. Clean sealing face and keep free of oil. 4 Secure camshaft sprockets and impulse wheels: Tighten mounting screws (A) on exhaust camshaft impulse wheel to approx. 5 Nm (44 in-lb). Tighten mounting nuts (B) on exhaust and intake sprocket assemblies to approx. 5 Nm (44 in-lb). Torque down mounting screws (A) and nuts (B) to final specifications. Tightening torques Sprocket assembly to camshaft initial torque 5 Nm (44 in-lb) Sprocket assembly wheel to carnshaft M7 tom screws (A) 20 Nm (15 ft-lb) M6 mounting sciew (6) I0 Nm (8 ft-lb) - - - - - Remove crankshaft locking tool from crankcase. - Remove camshaft locking tools from cylinder head.
- . - - -- Cylinder Head and valvetrain] Turn engine over twice in direction of rotation until cylinder 1 intake and exhaust camshaft lobes (arrows) face each other. - Lock crankshaft in TDC position with BMW special tool 11 2 300. 4 Place BMW special tool set 11 3 240 over camshafts and measure clearances. NOTE- @ If the exhaust side of the tool (A) is not flush with the head, camshaft timing is incorrect. Reset camshaft timing as de- scribed in 11 7 Camshaft Timing Chain. Due to flexible sprocket design, VANOS unit tolerances and play in the VANOS splines, when the camshaft timing is set correctly, the intake side of special tool set 11 3 240 (B) may be up to 1 mm (0.04 in.) above the suiface of the cylinder head. This is normal. Reassemble engine. Other- wise, reset camshaft timing as describedin 1 l?Camshaft Timing Chain. - Remove BMW special tool 11 6 150 from front of cylinder head. 4 Clean contact edges of cylinder head face and VANOS unit and apply a thin coat of Three Bond 12090 or equivalent sealing compound to surfaces. CAUTION- Male sure all gasket material is removed from face of cyl- inder head. Clean sealing face and keep free of oil. Check locating dowel (A) and dowel sleeve (B) at top of cylinder head for damage or incorrect installation. - Using a new steel gasket, install VANOS unit to front of cyi- inder head. See 117 Camshaft Timing Chain. NOTE- If VANOS control unit is being replaced, be sure to check and adjust camshaft timing as described in 117 Camshaft Tim- ing Chain. - Reinstall engine lifting eye. - Reconnect electrical harness connectors to camshaft posi- tion sensors and VANOS solenoid valves.
I Cylinder Head and Valvetrain - Remove adjustable primary timing chain tensioner tool and reinstall primary chain tensioner cylinder to cylinder head. Tightening torque Primary chain tensioner cylinder to 70 Nm (52 ft-lb) cylinder head - Remove flywheel locking tool from crankcase. Replace spe- cial tool bore sealing plug. - Remove camshaft locking tools from cylinder head Install intake camshaft cover and cylinder head cover. Check for correct seating of half-moon seals (A) in back of cylinder head cover. Use a small amount of Three Bond 8 1209 or equivalent sealing compound at corners (B) of half-moon cutouts. Seat gasket and seal corners at VANOS unit with Three Bond @ 1209. Tightening torque Cylinder head cover to cylinder head (M6) 10 Nm (89 in-lb) - Installation of the remaininq parts is reverse or removal, not- - ing the following: Change engine 011 and f~lter as descr~bed in 020 Mainte- nance. Reconnect battery. To prevent damaging the engine electronic systems, install all ground wire previously removed, including the ground wires for the ignition coils. Tightening torque - Radiator cooling fan to coolant pump 40 Nm (30 ft-ib) Spark plug to cylinder head 25 Nm (18 ft-ib)
Cylinder Head and valvetrain1 Camshaft removal and installation (M62 engine) Camshafts, removing (M62 engine) Special BMW service tools should always be used to remove and install the camshafts. Removal of the camshafts without the special tools can result in personal injury and lor cylinder head damage. NOTE- Cylinder bank 1-4 is referred to as the right cylinder bank and is located on the passenger side. Cylinder bank 5-8 is referred to as the left cylinder bank and is located on the driv- ers side. WARNING- Allow enqine to cool before beqinninq this procedure. 1 - Disconnect negative (-) cable from battery. CAUTION- Prior to disconnecting the battery, read the battery discon- nection cautions in 001 General Cautions and Warnings. - Dra~n coolant. See 170 Radiator and Cooling System. Remove plastic engine covers: Press down on locking pins (arrows) and remove top cover. Pry out trlm caps (A) from covers. Remove fasteners from beneath trlm caps and remove side covers. 4 Remove left and right interior ventilation filter housing (lefl side shown): Release locking tabs (A) or locking strap (early models, not shown). Rotate duct inward (arrow) to disconnect. - Release spring lock (6) to unloclc ventilation housing. Disconnect electrical harness from hood switch (C). Release locking clip and remove ventilation filter cover (0). Remove filter housing. Removal of right side ventilation duct is similar.
-. . Cylinder Head and Valvetrain -- v . -- --- -- 4 Remove air filter housing and ducts: Loosen hose clamps as necessary and disconnect electri- cal harnesses. - Remove air filter housing mounting fastener (arrow). Loosen hose clamp at throttle body. Remove air filter housing with mass air flow sensor and duct. Disconnect the following electrical harness connectors. Knoclc sensors (A). Thermostat housing (B). Throttle position sensor/throttle position switch and idle valve (C). Camshaft position sensor (D). * Ignition coils (E). Remove mounting nuts (arrows) ducting. from wiring harness
Cylinder Head and Valvetrain < Disconnect fuel injector electrical connectors from injectors. Pry corner of wire lock clip (arrow) on first injector. * Repeat for all injectors. Lift wiring ducts off and set aside. 4 Remove right and left side ignition coil mounting nuts (ar- rows) and coils. NOTE- Male note of location for ground straps (arrow A). - Remove spark plugs. - Disconnect positive (+)jumper junction from top of lefl cylin- der head cover. 4 Remove retaining nuts (arrows) and remove oil lines from left and right cylinder heads.
11 6-42 / Cvlinder Head and Valvetrain 4 Using crankshaft center bolt, rotate engine clockwise one complete rotation until the first cylinder is at TDC. 4 Confirm TDC position. Lobes of camshafts for cylinder head 1-4 (passengers side) should point up (arrows). 4 Remove timing chain tensioner (arrow) from right side upper timing chain cover. - Remove secondary air injection pipes in front of upper timing chain covers. - Remove left and right coolant hoses from coolant pump housing. - Detach dipsticlc tube from upper right timing cover,
Cylinder Head and valvetrain1 4 Remove camshaft position sensor (A) from timing chain cov- er. Remove bolts (arrows) from timing chain covers and re- move covers from right and left cylinder heads. 4 Counterhold intalte carnshaft on right cylinder head 4 Counterhold right intalte camshaft and remove sprocltet mounting bolts (arrows) from right cylinder head. Remove carnshaft impulse wheel and primary chain sprocket. - Slide primary timing chain off sprocltet and suspend chain with stiff wire to prevent it from dropping into lower timing chain cover.
.. ICylinder Head and Valvetrain -.I 4 Counterhold left intake camshaft and remove sprocket mounting bolts (arrows) from left cylinder head. Remove primary chain sprocket. Slide primary timing chain off sprocket and supend timing chain with stiff wire to prevent it from dropping into lower timing chain cover. 4 Using cranltshaft center bolt, rotate engine counterclockwise to 45 before TDC position. 45 V.OT mark on pulley will align with boss cast on engine block (arrow). 4 Compress secondary chain tensioners and lock (arrows) using BMW special tool 11 3 310 or a stiff wire.