Cub Cadet Yanmar 3TNV72 - Manual (Page 176)

FUEL SYSTEM
TNV IDI Service Manual 7-15
Fuel Injection Pump
Figure 7-11
15. Do not loosen or remove the four bolts
(Figure 7-12, (3)) holding the pump drive gear
to the hub. Only remove the single drive gear
nut (Figure 7-12, (1)) and washer
(Figure 7-12, (2)), leaving the hub attached to
the gear.
Figure 7-12
16. Hold the gear train stationary using a large
socket wrench on the crankshaft pulley bolt.
Loosen the fuel injection pump drive gear
retaining nut (Figure 7-12, (1)) and turn it out to
the end of the fuel injection pump shaft.
17. Remove the injection pump drive gear and hub
from the injection pump drive shaft as an
assembly using an appropriate gear puller
(Figure 7-13).
Figure 7-13
Note: The injection pump drive gear can be
removed from the gear case; however, it
is best to let it remain in the gear case.
CAUTION
After marking the position of the pump
drive gear, do not rotate the engine
crankshaft. Rotating the crankshaft will
cause the fuel injection pump to become
misaligned.
0000048en
CAUTION
Do not loosen or remove the four bolts
retaining the fuel injection pump drive
gear to the fuel injection pump hub. Do
not disassemble the fuel injection pump
drive gear from the hub. Correct fuel
injection timing will be very difficult or
impossible to achieve.
0000031en
(1)
0002096
(1)
(3)
(2)
0002209
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