Doosan DX700LC Operation And Maintenance Manual page 276

4. The increased clearance recommended for muddy ground
conditions is between 430 - 460 mm (16.93 - 18.11 in). The
clearance should be approximately 460 mm (18.11 in) for
operation over gravel, rocky terrain, or over sand or snow.
The track adjusting mechanism is under very
high-pressure. NEVER release pressure too suddenly.
The grease cylinder valve should never be backed off
more than 1 complete turn from the fully snugged
down position. Bleed off pressure slowly and keep
your body away from the valve at all times. If there is
problem in the fitting thread, the valve or fitting might
be ejected at high speed to cause fatal wound.
5. Track tension adjustments are made through the grease
fitting (1, Figure 154) in the middle of each side frame.
Adding grease increases the length of an adjustment
cylinder (2). The longer the adjustment cylinder, the
greater the pressure on the tension spring pushing the
track idler wheel outward.
6. If there is not enough slack or clearance in the tracks and
the adjustment is too tight, the idler wheel and adjusting
cylinder can be retracted by bleeding off grease through
hole in valve (3, Figure 154) by loosening valve slowly.
NOTE: After track tension is adjusted by loosening
valve, be sure to tighten valve (3, Figure 154)
with 27 kg•m (265 Nm, 195 ft lb).
Do not loosen or remove the grease fitting (1, Figure
154) until the pressure is entirely bleed off by slowly
loosening valve (3, Figure 154).
Inspection, Maintenance and Adjustment
4-88
WARNING
WARNING
2
1
Figure 154
3
FG016146
OP001123