11 36 630 Removing and installing/replacing distributor on left camshaft adjustment unit (M62 VANOS from 9/98)

Removal 

Removal of the camshaft adjustment unit distributor is described separately from installation.

Remove left camshaft adjustment unit, refer to 11 36 610 REMOVING AND INSTALLING/REPLACING LEFT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

Feed timing chain out of camshaft adjustment unit distributor.

Secure timing chain to prevent it from sliding down.

Release screws on camshaft adjustment unit distributor.

Fig 1: Releasing Screws On Camshaft Adjustment Unit Distributor

Courtesy of BMW OF NORTH AMERICA, INC.

By moving it back and forth, carefully detach distributor straight from camshaft.

Fig 2: Detaching Distributor Straight From Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Traces of wear on the distributor plain compression rings up to a depth of approx. 0.1 to 0.2 mm are normal.

Removal 

If there is pitting or scoring in the longitudinal direction, the plain compression rings and the distributor must be replaced.

If necessary, remove seal (three plain compression rings).

Press compression ring (1) upwards as far as possible and remove catch.

Carefully pull compression ring (1) apart and remove towards front.

Fig 3: Removing Compression Ring Apart

Courtesy of BMW OF NORTH AMERICA, INC.

Installation 

If necessary, replace seal (three plain compression rings).

Carefully pull compression ring (1) apart and install.

Press compression ring (1) upwards as far as possible and install catch.

Fig 4: Pressing Compression Ring Upwards

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully feed out gasket.

Fig 5: Feeding Out Gasket

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, remove non-return valve.

Insert commercially available screw with M10x1 thread or special tool 13 5 132 as and extraction aid by hand in nonreturn valve (1) and carefully remove.

Fig 6: Inserting Commercially Available Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation 

Replace sealing ring (1) on non-return valve.

An incorrectly installed non-return valve will result in engine damage.

Install non-return valve with M10x1 thread facing outwards.

Fig 7: Identifying Sealing Ring On Non-Return Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Installation 

Installation of the camshaft adjustment unit distributor is described separately from removal.

Check correct installation position of non-return valve (1).

Feed in new gasket so that it is secured in groove on camshaft bearing cover and over non-return valve (1).

Fig 8: Checking Correct Installation Position Of Non-Return Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Make sure that contact points on plain compression rings snap into place.

Align contact points of compression rings upwards.

Fig 9: Aligning Contact Points Of Compression Rings Upwards

Courtesy of BMW OF NORTH AMERICA, INC.

Make sure that gasket is secured in groove on camshaft bearing cover.

Fig 10: Checking Gasket Position

Courtesy of BMW OF NORTH AMERICA, INC.

Apply a light coat of oil to camshaft adjustment unit distributor and plain compression rings.

Carefully push on camshaft adjustment unit distributor so that it is straight.

Fig 11: Applying Light Coat Of Oil To Camshaft Adjustment Unit Distributor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation 

Replace sealing ring on screw (1).

Install and tighten down screws.

Fig 12: Identifying Sealing Ring On Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Feed timing chain (1) onto camshaft adjustment unit distributor.

Fig 13: Feeding Timing Chain

Courtesy of BMW OF NORTH AMERICA, INC.

Install left camshaft adjustment unit, refer to 11 36 610 REMOVING AND INSTALLING/REPLACING LEFT CAMSHAFT ADJUSTMENT UNIT (M62 VANOS FROM 9/98) .

Assemble engine.