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5.4.3 ADJUSTING THE TRACK TENSION AND GREASING THE TRACK CHAINS
To tension the track, first loosen the hex nut-A and then loosen the hex nut-B as shown in
Figure 5.5. Unscrew the adjusting bolts (M36) to increase the tension of the track chains. Make
sure that the tensions of both amphibious undercarriages are the same. Once tensioning is
complete, all these must be retightened. Figure 5.6 shows the correct tension measurement
for the track chain.
Figure 5.5: Position of chain bolts and nuts
Figure 5.6: Track chain tensioning
After the tensioning process is completed, it is necessary to grease the track chains, so that
the amphibious excavator can move smoothly. This procedure must be followed if the
amphibious excavator has been parked for an extended period.
5.4.4 WEAR PLATES
The wear plates, which are in contact with the chain rollers, are welded to the pontoons. The
wear plates must be replaced if they are badly worn. The operator can use carbon arc to
remove the used wear plates and replace them with new ones. Refer to Figure 5.7.
Hex Nut-A
Hex Nut-A
Hex Nut B
M36 Bolt
Hex Nut B
M36 Bolt
