Jacobsen SXG323, Service Manual

Page: 82 / 230

CHAPTER 7. FUEL SYSTEM
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7
4) Install the shim with the chamfered side turned to-
wards the tappet.
7) After installation, make sure that the control rod
moves smoothly.
3. INJECTION NOZZLES AND HOLDERS
3.1. REMOVAL OF INJECTION NOZZLES AND
HOLDERS
兟
Removal of the injection pipes and leak-off pipes.
After removing the injection pipes, cap the openings of
the delivery holders, nozzles, and injection pipes.
Fig. 7-22
5) When inserting pin (44) into the tappet, feel for the
position where the plunger flange is seated in the
groove of the control sleeve by turning the control
rod little by little.
Fig. 7-25
兟
Loosen the retaining nuts.
Use a box wrench or open-end wrench of 22 mm (0.866
in.).
NOTE: Be careful not to loosen the hexagonal part
[19mm (0.748 in.)] of the holder body. If done
so, the holder becomes disassembled.
Fig. 7-23
3.2. INSPECTION OF INJECTION NOZZLES
6) Adjust the groove in the pin so it is in level, using a
screw driver and install the snap ring.
Fig. 7-24
兟
Spraying test
Use fuel with a specific gravity of 0.82 - 0.84 and a tem-
perature of approximately 20°C (68°F).
Wash the holder and nozzle in clean fuel.
Also wash a nozzle tester and install the nozzle and
nozzle holder on it as shown in Fig. 7-28 Inject fuel and
observe spraying. It is the best to use a stroboscope to
judge accurately.