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2. Replace the lubricating oil (for each reducer)
The first replacement shall be carried out after 1000 hours
working for a new machine, and thereafter it shall be done
every 1000 hours.
1) Park the excavator on level ground.
2) Rotate the reducer to make the 3 screw plugs on its
outer end perpendicular to the ground, and then stop the
machine.
3) Drain the oil when the reducer oil is hot.
Note: Don't burn yourself by hot oil.
4) Loosen screw plug
③
to drain oil, and loosen screw
plug
①
to drain oil completely.
5) Loosen the bolt
②
.
6) Add the specified lubricating oil from the oil filling hole
①
until oil flows out from the oil level inspection hole
②
.
3. Check the tightening torque of the connecting bolts of the walking reducer and the rotary reducer
The tightening inspection of the connecting bolts of the
walking reducer
Perform the first inspection after new machine works for
50 hours and then every 500 hours.
B. The tightening inspection of the
connecting bolts of the rotary reducer
The first inspection after working for 50 hours and then
every 500 hours.
Tighten the bolts connecting the reducer and the platform.
Bolt
Shim
Bolt
Rotary reducer
Summary of Contents for U27
Page 1: ...U27Hydraulic Excavator Instruction Manual Guangxi Yuchai Heavy Industry Co Ltd...
Page 5: ...1 1 Preface...
Page 17: ...2 1 Safety regulations...
Page 44: ...3 1 Parts introduction...
Page 49: ...3 6 Panel meter Oil level pointer Timing display Water temperature pointer Indicator area...
Page 55: ...4 1 Operation guide...
Page 89: ...5 1 Maintenance...
Page 130: ...6 1 Accessories guide...