Honda Bmw 5 Service Manual
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Camshaft Timing chain]
4 Coat new seal with oil and position in timing chain cover. Use
BMW special tool 11
3 280 and crankshaft center bolt to draw
seal in flush with timing case cover.
- Align vibration damper assembly with keyway and tap into
place. Insert new center bolt with washer.
CA
UTIOG
Inspect woodruff key for damage before installing hub
assembly.
- Install crankshaft holding tool malting sure tool locks into
place in openings in damper assembly. While...](http://img.usermanuals.tech/thumb/34/100712/w64_bmw-5-service-manual-1509562501_d-246.png "Page 247
Camshaft Timing chain]
4 Coat new seal with oil and position in timing chain cover. Use
BMW special tool 11
3 280 and crankshaft center bolt to draw
seal in flush with timing case cover.
- Align vibration damper assembly with keyway and tap into
place. Insert new center bolt with washer.
CA
UTIOG
Inspect woodruff key for damage before installing hub
assembly.
- Install crankshaft holding tool malting sure tool locks into
place in openings in damper assembly. While...")
Camshaft Timina chain1 - Remove viscous clutch cooling fan. See 170 Radiator and Cooling System. CA UTlOEIC The radiator cooling fan nut (32mm wrench) has left- hand threads. . < Remove engine trim covers: Pry out plastic trim caps (arrows). . Remove cover fasteners and covers. 4 Remove ignition coils: 0 Disconnect ignition coil electrical harness connectors Remove coil mounting fasteners and remove coils. Remove spark plugs. NOTE- Make note of ignition coil ground strap locations. Disconnect VANOS electrical harness connector (A) and oil line fitting (B) from VANOS control unit. NOTE- Wrap the VANOS oil line fitting with a shop rag to absorb leaking oil. - Disconnect cranltcase breather by squeezing at arrows, - Remove cylinder cover mounting fasteners and remove cylinder head cover. NOTE- The cylinder head cover mounting bolt insulators and gas. kets should be reinstalled in their original positions. Make note of their arrangement during removal.
Camshaft Timing Chain -- - -1 Q Remove oil baffle cover from intake camshaft Remove front engine lifting bracket fasteners (arrows A) and remove bracket. - Remove cable duct clips (arrows B) from front of VANOS control unit. Rotate engine clocltwise and set camshafts to Top Dead Center (TDC). Cylinder 1 camshaft lobes will point towards each other (arrows). 4 Remove plug from below starter and install crankshaft lock- ing tool (BMW special tool 11 2 300).
Camshaft Timing Chain 4 Unscrew and remove cylinder head cover studs (arrows) at rear of cylinder head. % Secure camshafts in TDC position using BMW special tool set 11 3 240. 4 Remove access plugs (arrows) from VANOS control unit.
117-18 Camshaft Timing Chain 4 Loosen 4 bolts (arrows) from exhaust camshait sprocket (Torx E10). Press down on secondary chain tensioner and lock into place using BMW special tool 11 3 292 or a similar size pin. NOTE- Two types of secondary timing chain tensioners are used; one with two holes, and one with a single hole for the locl
Camshaft Timing chain1 VANOS control unit, installing (M52 engine) CAUTION- Incorrect installation of the VANOS control unit may result in damage to the engine. - Make sure camshafts and crankshaft are loclted in TDC po- sition with BMW special tools as described during VANOS removal. < Rotate exhaust camshaft sprocket clocltwise (as viewed from front of engine) using BMW special tool 11 5 490, until detent position stop is reached. 4 Apply a small amount of liquid gasket sealer (Three Bond 1209 8 or equivalent) to VANOS housing alignment dowels on front of cylinder head. Install a new gasket. < Push VANOS piston gear cup (arrow) into VANOS housing until it bottoms out. Position VANOS control unit in front of camshafts, but do not engage splines on gear cup.
11 7-20 Camshaft Timing Chain 4 lnstall BMW special tool 1 I 5 490 on exhaust camshaft. - Insert the helical-toothed splined shafl (arrow) into the heli- cal-toothed sprocket while rotating gears and chain counter- clockwise with special tool. CAUTION- Ensure that the first available tooth engages. It is important that the exhaust camshaft sprocket be turned only the mini- mum amount necessary to engage the gear cup. If this pro- cedure is done incorrectlq: the VANOS system may not fully function. - Install and tighten down VANOS control unit fasteners Tightening torques VANOS control unit to cylinder head M6 nuts 10 Nm (89 in-lb) M8 bolts 22 Nrn (17 ft-lbj - Press down on secondary timing chain tensioner and remove lock tool. Remove primary timing chain tensioner (arrow) CAUTION- Timing chain tensioner is under spring tension. lnstall adjustable primary chain tensioner (BMW special tool 11 4 220) and preload timing chain by tightening to 1.3 Nm (I I in-lb).
Camshaft Timing Chain/ - - - - - - . - - . - . Tighten exhaust camshaft sprocket mounting bolts (arrows) alternately in two stages. Tightening torques Secondary timing chain sprocltets to camshafts Stage 1 Stage 2 5 Nm (44 in-lb) 22 Nm (17 ft-lb) - Remove crankshaft locking tool and camshaft locking tool set. - install camshaft gear bolt access plugs using new sealing washers and tighten. - Remove timing chain tensioning tool from side of cylinder head. Install primary chain tensioner with new sealing wash- er and tighten. Tightening torques Access plugs to VANOS control unit 50 Nm (37 ft-lb) Primary timing chain tensioner plug to 70 Nm (52 ft-lb) tensioner sleeve - Check adjustment VANOS system, see VANOS timing, checking and adjusting (M52 engine).
Camshaft Timing Chain VANOS timing, checking and adjusting (M52 engine) NOTE- * Special BMW service tools are required to remove and in- stall the VANOS control unit. Read the procedure through before starting the job. If the camshafts are not properly timed, the pistons can contact the valves. - Disconnect negative (-) cable from battery. CAUTIOG Disconnecting the battery may erase faultcode(s) storedin control module memory. Prior to disconnecting the battery, checlc for fault codes using special BMW diagnostic equip- ment. Prior to disconnecting the battery, read the battery dis- connection cautions given in 001 General Cautions and Warnings. - Remove viscous clutch cooling fan. See 170 Radiator and Cooling System. CAUTIOG The radiator cooling fan nut (32 mm wrench) has left-hand threads. 4 Remove ignition coils: Disconnect ignition coil electrical harness connectors. Remove coil mounting fasteners and remove coils. Remove spark plugs. NOTE- Make note of ignition coil ground strap locations.
Camshaft Timing Chain 4 Disconnect VANOS electrical harness connector (A) and oil line fitting (B) from VANOS control unit. NOTE- Wrap the VANOS oil line fitting with a shop rag to absorb leaking oil. Disconnect cranltcase breather by squeezing at arrows. - Remove cylinder cover mounting fasteners and remove cylinder head cover. NOTE- The cylinder head cover mounting bolt insulators andgas- lets should be reinstalled in their original positions. Make note of their arrangement during removal. 4 Remove oil baffle cover from intake camshaft
1 17-24 I Camshaft Timing Chain 4 Remove banjo bolt from VANOS unit oil feed line and install BMW special tool 11 3 450. NOTE- Oil will drain from oil feed line. - Connect compressed air line (with pressure set to 2-8 bar or 30-1 10 psi.) to air fitting. 4 Measure gap (A) between secondary timing chain tensioner and intake camshaft sensor wheel. Make note of distance. 4 Connect cable test (BMW special tool 11 6 410) to VANOS connector. Connect positive clip to positive battery terminal. - Connect negative clip to battery negative terminal. CAUTION- Reversing terminals on special tool will damage diode on VANOS solenoid valve.