Engine Speed - BMW D7 Workshop Manual

Injection pump
Adjustment of the delivery end:
Crank the engine in the direction of rotation until
-
the fuel stops to flow from the adjustment device
- Slowly crank further, until the fuel just begins to
flow again
NOTE
The number of degrees indicated on the
flywheel must correspond with the nominal
o
values (11.5 – 12.5 BTDC). If the values do
not correspond, correct with the shims
inserted under the pump.
Basic rule:
More shims = delivery ends later (lower number of
degrees)
Less shims = delivery ends earlier (higher number of
degrees)
In order to determine which thickness of shims must
be removed or added, rotate the flywheel to the
required number of degrees from the delivery end
already determined (dial indicator set at zero)
The value shown on the dial indicator corresponds to
the thickness of the shims which must be added or
removed in order to compensate for the difference.
NOTE
Repeat the procedure after the adjustment
as a double-check
- Set the delivery stroke at the correctly set
delivery stop.
Set the dial to zero.
- Rotate the flywheel against the direction of
rotation until the dial indicator indicates the
delivery stroke value.
Hold the flywheel at this position.
At this point fuel must just start flowing out of the
leak-off-line. If this does not occur, loosen the start
filling lock nut with wrench No 74 64 1 333 517 and
carefully turn the eccentric shaft with wrench No 74
64 1 333 528 until the fuel begins to flow.
- Subsequently tighten the locknut again
NOTE
As a check, also repeat this adjustment.
Adjust Injection pump
- After the adjustment is completed remove the
dial indicator and install the completely
assembled delivery valve with injection pipe in
the correct sequence.
NOTE
Pressure valve body with the exterior
truned groove lies in the direction of the
pump tappet.
When screwing in the injection pipe, replace the
internal copper sealing ring and the external O-ring.
Observe tightening torque.
CAUTION
When adjusting rpm it is imperative that
a tachometer is used
NOTE
The camshaft is geared down in a ratio
of 1:2. The rpm measured there must
therefore be multiplied by 2 in order to
arrive at the nominal rpm
- In order to adjust the rpm, remove the plastic
plug and loosen the retaining nut
- Turn the eccentric shaft, recognisable from the
outside only as a set screw, with the aid of a
screwdriver, until the desired rpm is reached
- Move the throttle in the direction of STOP briefly
after each adjustment of the eccentric shaft and
then bring the throttle to the full throttle stop
position
- Check injection pump and injection valve for
correct function (46)
After having correctly adjusted the rpm, fasten
-
the retaining nut again and insert the plastic
plug
Preliminary work for the functional check of the
injection pump and injection valve
- Remove injection pipe
- Vent the engine correctly
Adjust

Engine speed

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