Doosan DX60R Shop Manual page 362

• The idler gear is visible. Make a reference mark (1,
Figure 255) across both the fuel injection pump drive
gear and the idler gear.
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.
18. Do not loosen or remove the four bolts (3, Figure 256)
retaining the pump drive gear to the hub. Only remove the
single drive gear nut (1, Figure 256) and washer (2, Figure
256), leaving the hub attached to the gear.
19. Hold the gear train using a large socket wrench on the
crankshaft pulley nut. Loosen the fuel injection pump drive
gear retaining nut (1, Figure 256) and turn it out to the end
of the fuel injection pump shaft.
20. Remove the pump drive gear and hub as an assembly
using an appropriate two-bolt gear puller (Figure 257).
NOTE: On TNV82 - 88 models the injection pump drive
gear will remain "captured" in the gear case. On
TNV94 - 106 models, the injection pump drive
gear can be removed through the gear case
cover opening.
21. Once the fuel injection pump drive gear and hub
assembly has "popped" loose from the tapered fuel
injection pump drive shaft, carefully remove the drive gear
nut (1, Figure 256) and lock washer (2, Figure 256).
22. Locate the mark stamped into the upper outside mounting
boss of the fuel injection pump. Highlight this mark and
make a corresponding mark on the gear case or front
plate (1, Figure 258).
Engine
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CAUTION
Figure 255
Figure 256
Figure 257
Figure 258
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