BMW 3 Series Service Manual (E39)

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Camshaft Timing chain/

<Primary chain tensioner tool, V-8 (Tool No. BMW 11 3 390)

<Primary chain tensioner tool, 6-cylinder (Tool No. BMW 11 4 220)

<VANOS sprocket wrench (Tool No. BMW 11 5 490)

-4 Double VANOS setup bracket, M52 TUlM54 6-cylinder

<Double VANOS sprocltet setup tool, M52 TU/M54 6-cylinder (Tool No. BMW 11 6 180)

<Tensioner bracket, V-8 (Tool NO.11 7 380)

Camshaff Timing Chain

NOTE-

Mark direction of belt rotation if reusing belt.

-Remove vibration damper mounting bolts and remove vibration damper and pulley from hub.

NOTE-

The M52 6-cylinder engine uses a 2-piece vibration damper and hub assembly.

4 Install crankshaft holder (BMW special tools 11 2 150 and11 2410).

NOTE -

Be careful while aligning locator pin hole in special tool 11 2

410 with vibration damper locatorpin.

-While counterholding crankshaft, loosen and remove crankshaft center bolt.

CAUTION-

Do not use flywheel locking tool to hold crankshaftstationary to loosen or tighten crankshaft hub center bolt Use only the special tools specified, or equivalenthub holding tool.

NOTE-

The cranlshaft hub center bolt is torqued to 4 10 Nm (300 ft-16).

-Remove damper hub and special tools.

4 Install cap (BMW special tool 11 2 383) on end of cranltshaft.

4 Install seal guide (BMW special tool 11 2 385) over end of crankshaft. Be sure to align tool with keyway on crankshaft (arrow).

Camshaft Timing Chain

lnstall vibration damper mounting bolts. Note hub locating dowel (arrow).

Tightening torque

-Installation is reverse of removal noting the following:

Installing drive belts. See 020 Maintenance.

Install cooling fan. See 170 Radiator and Cooling System.

Crankshaft oil seal, replacing (M52 TU and M54 engines)

The crankshafl front seal IS located in the lower timing cover, behind the vibrat~ondamper.

-Disconnect negative (-) cable from battery.

Disconnectingthe batterymay erase fault code(s) storedin control module memoy Checlc for fault codes using specialBMW diagnosticequipment.

Prior to disconnecting the battery, read the battery disconnection cautions given in 001 General Cautions a n d Warnings.

-Remove splash guard from beneath engine

-Remove engine cooling fan assembly. See 170 Radiator and Cooling System.

NOTE-

Cooling fan nut (32 mm wrench) has left-hand threads.

-Remove drive belts. See 020 Maintenance

NOTE-

Mark direction of belt rotation if reusing belt.

-Install crankshaft holding tool (BMW special tool 11 8 190111 8 200). Make sure tool locks into place in openings in damper assembly. While counterholdingcrankshafl with special tool, remove crankshaft center bolt.

CAUTIOI\C

Do not use flywheellocling tool to holdcrankshaftstationary to loosen or tighten cranl(shaft hub center bolt. Use only the special tools specified, or equivalenthub holding tool.

Usecare when removingdamper/hub assembly, as ~tis easy to damage the radiator

1Camshaft Timing Chain

<Remove all vibration damper perimeter mounting bolts (ar- row) and remove vibration damper.

4 Install crankshaft holding tool (BMW special tool 11 2 450) and remove and discard crankshaft center bolt.

NOJE-

Be careful to align hub locator pin to hole (arrow) in special tool 11 2 450.

-If needed, use a puller (BMW 11 8 219) to remove hub from end of crankshaft.

4 Install end cap (BMW special tool 11 2 383) on end of crankshaft.

117-13

Camshaft Timing chain1

< Install seal removing tool (BMW special tool 11 2 380) and screw in body of puller until it makes firm contact with seal. Tighten center screw in end of tool to draw out seal.

4 Coat new seal with oil, and use BMW special tool 11 1 220 and crankshaft center bolt to draw seal in flush with timing case cover.

-Install damper hub and tighten new center bolt finger tight

4 Install angle gauge BMW special tool 11 3 460 as shown.

ICamshaft Timing Chain

Mark 0" location on socket (arrow).Tighten hub bolt in four stages.

-install vibration damper and mounting bolts

NOTE-

Male sure to align vibration damper with locating dowel pin in hub.

Tightening torque

-Install drive belts. See 020 Maintenance.

-Install cooling fan. See 170 Radiator and Cooling System.

-Replace under engine splash shield, then reconnect negative battery cable.

!/ANBS CONTROLUNIT AND

TIMINGCHAIN(M52 ENGINE)

VANOS control unit, removing (M52 engine)

NOTE-

Special BMW service tools are required to remove and install the VANOS control unit. Read the procedure through before starting the job.

If the camshafts are notproperly timed, the pistons can contact the valves.

-Disconnect negative (-) cable from battery.

CAUTION-

Disconnecting the battery may erase fault code(s) stored in control module memory. Prior to disconnecting the battev, check for fault codes using special BMW diagnostic equipment.

* Prior to disconnecting the battery, read the battery disconnection cautions given in 001 General Cautions and Warnings.