Beta 1461/C16 Mode D'emploi page 7

The D551 Setting Plate and D146-2 TDC Location Pin
are used to 'check' the timing position of the
camshafts and TDC position of the crankshaft (via
'locking' the flywheel) on these 2.0 and 3.0 Twin
Camshaft 16v. direct injection diesel engines.
In addition to these two specialised tools the
1461/C16 kit includes a Camshaft Plate Locking Tool
(D552) which is employed when 'adjusting' the
camshaft timing, and Tensioner Retaining Pins (D413)
used to 'lock' the tensioner when removing the
camshafts, timing chains or sprockets.
Also included is Tool D553 used to retain the Diesel
Pump sprocket, in-situ on BMW models, whilst the
pump is removed and off the engine.
D551 Camshaft Setting Plate &
D552 Camshaft Plate Locking Tool
Checking Timing
On M47 and M57 engines
The camshafts are connected via the timing chain.
With the crankshaft 'locked' at TDC with Location Pin
D146-2 in the flywheel, on M47and M57 engines, the
front camshaft lobes will point inwards towards each
other.
On M47TU and M57TU engines
The timing chain drives only the inlet camshaft. The
inlet camshaft is connected to the exhaust camshaft
via gears.
With the crankshaft 'locked' at TDC with Location Pin
D146-2 in the flywheel, on M47TUand M57TU
engines, the front camshaft lobes will both point
towards the exhaust.
The accuracy of the timing position of both camshafts
is confirmed by fitting D551 Setting Plate to the Inlet
and then exhaust camshafts, in turn.
Checking timing on inlet camshaft
The D551 Setting Plate is located on the inlet camshaft
in the position shown above. For the inlet camshaft to
be timed correctly the Setting Plate must fully contact
both sides of the camshaft cover gasket face.
Checking timing on the exhaust camshaft
Remove the D551 Setting Plate, reverse its position
and fit onto the exhaust camshaft. Again, checking
that the Setting Plate is making contact with both
sides of the gasket face.
If the Camshaft Setting Plate does not fully contact
the camshaft cover gasket face on either the inlet or
exhaust camshafts, timing adjustment will be required.