Checking and setting
37
To check and set the start of deliv-
ery
(by authorized specialist personnel)
Checking
Turn engine so that cylinder no. 1 is at the
specified number of degrees before firing
top dead centre (TDC).
The relevant degree marking on the fly-
wheel must coincide with the notch in the
flywheel housing. See inspection hole.
To prevent errors, always look vertically to
the centre of the flywheel via the notch on
the flywheel housing. The marking on the
degree scale must be on the imaginary
line between the notch and the centre of
the flywheel.
Remove screw plug À on governor hous-
ing. If fitted, take out blocking pin Á.
If the pointer is exactly in the centre of the
inspection hole, the pump plunger for cyl-
inder no. 1 is at start of delivery. However,
it is possible to determine exactly whether
or not the pump is at start of delivery only
by means of the following special tools:
a. Light signal transmitter
80.99605-6002
21
Push light signal transmitter into socket in
governor housing. Ensure that the lug Â
fits in the groove Ã. Tighten the knurled
nut Ä by hand.
4
3
5 6
Connect up power supply of light signal
transmitter (red terminal = +). Turn engine
by hand so that piston in cylinder no. 1 in
the compression stroke comes close to
the start of delivery.
Lamp (A) comes on shortly before start of
delivery is reached.
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