Fig. 7 - No. 5.9030.617.4 /10 injection pump
timing equipment.
Fig. 8 - Resetting no. 5.9030.617.4 /10 compara-
tor-equipped tool.
Fig. 9 - Mounting position of the no.
5.9030.617.4/10 equipment fitted with compara-
tor.
• Injection pump calibration 2.4619.050.0/20 (fig. 10)
(BOSCH injection pump equipped with a lock pin for the
control rod).
After valve timing has been successfully concluded undertake this
calibration by using no. 5.9030.617.4/10 equipment in addition to
the equipment already positioned on the first cylinder and excep-
ting the comparator on the valve tappet rod.
To each shim pack add a pack of shims equal to the value stamped
on the pumps.
Injection pump calibration is to determine a 80.4 mm dimension
between the pumps-to-block fixing surface and the corresponding
cam races, considering the position they find when the injection is
being started; (Fig.10).
Rotate the crankshaft to move the 1st cylinder piston into T.D.C.
position (compression stroke end, valves closed) and set to zero
the comparator attached to the valve stem; the same procedure
as described in valve timing section shall apply.
Rotate the shaft in a counter-clockwise direction until a reading of
2.92 mm is shown on the dial gauge; this value corresponds to a
timing advance of 16°.
Correct positioning takes place when through anticlockwise rota-
tion either the 2.92 mm set point is exceeded, soon after coming
back to such a dimension through clockwise crankshaft rotation
so that any clearances may be taken up.
Fit the special no. 5.9030.617.4 comparator. To reset the compa-
rator rest the comparator measuring roll onto a flat surface.
Insert the tool into the first injection pump seat and take measure-
ment reading from the comparator dial to align the bearing face
with the engine block. This reading corresponds to shim pack X.
To each pack of shims X add a number of shims Y being equal to
the dimension stamped on injection pump flange, so as to obtain
a total shim packing (X + Y) to be put between injection pump and
engine block, this permitting a 80.4 mm standard dimension to be
determined.
Repeat this operation for each injection pump, fitting tool
5.9030.616.4 to the corresponding cylinder.
Warning - Install the injection pump after applying some Silastik
738 silicone between shims, engine block and injection pump.
engine
fuel system
16
1
76
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