Thermo King Spectrum DE 30-2, Manual, Page: 59 / 140

Engine Maintenance
59
9. Energize the fuel solenoid by energizing the
run relay [RUNR] with the Relay Board Test
Mode.
10. Rotate the engine backwards
(counterclockwise viewed from the water
pump end) until the 10 degree BTDC (before
top dead center) timing mark is positioned in
the bottom of the timing mark access hole.
There are two injection timing marks. The 10
degree BTDC timing mark is a horizontal line
stamped on the flywheel approximately 1.0 in.
(25 mm) before the top dead center mark.The
12 degree BTDC timing mark is a horizontal
line stamped on the flywheel approximately
1.2 in. (30 mm) before the top dead center
mark.
11. Pump the priming pump by hand a few times,
or energize the electric fuel pump if an electric
fuel pump is being used.
12. Use a clean towel to remove the fuel from the
top end of the delivery valve holder.
13. Slowly turn the engine in the normal direction
of rotation until you see the fuel rise in the end
of the delivery valve holder. Stop as soon as
you see the fuel rise.
14. Check position of the timing marks. The 10
degree BTDC timing mark on the flywheel
should be aligned with the index mark on the
side of the timing mark access hole. Repeat
steps 10 through 14 to recheck the timing.
15. If the timing is off by more than 1 degree (0.1
in. [2.5 mm]), loosen the mounting nuts on the
studs that fasten the injection pump to the
engine and rotate the injection pump to change
the timing.
a. Pull the top of the injection pump away
from the engine to advance the timing.
b. Push the top of the injection pump toward
the engine to retard the timing.
16. Tighten the injection pump mounting nuts and
recheck the timing. Repeat steps 10 through
16 until the timing is correct.
17. Install the cover in the timing mark access
hole, install the injection line for the number
one cylinder, install the rocker arm cover,
tighten the other injection lines and reconnect
the 8S wire to the starter solenoid when
finished with the procedure.
Injection Pump Removal
The injection pump drive gear will not fit through
the gear housing when removing the pump, the
gear must be separated from the pump. Using tool
P/N 204-1011, it will not be necessary to remove
the belts, fuel pump, crankshaft pulley, crankshaft
seal or front plate.
1. Remove the starter for clearance, remove
throttle linkage, fuel lines, harness and
mounting hardware from injection pump.
1. Index Mark
2. 12 Degree BTDC Timing Mark
3. 10 Degree BTDC Timing Mark
Figure 29: Timing Mark Alignment
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2
3
1. Index Mark
2. 12 Degree BTDC Timing Mark
3. 10 Degree BTDC Timing Mark
Figure 30: Correct Injection Timing Mark Alignment
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2
3