Cub-cadet Yanmar 3TNV72 User Manual download pdf (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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