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normal operating range, add it as necessary.
4. Check the oil level of the transmission to ensure that the level stays within the normal
operating range, add it as necessary.
5. Check the fuel whether it is enough or not, add it if necessary.
6. Check the air filter of engine whether it is clean or not, replace it if necessary.
7. Drain all air reservoirs for pneumatic brake machines; but not for hydraulic brake
machines;
8. Add lubricating grease to all articulated points, pin shaft sleeves and other positions
according to the lubrication schematic diagram of the machine;
9. Check and make sure air pressure of tires is normal and no abnormal wear exists; check
all hydraulic components and hydraulic pipes whether spilled oil or existing abnormal
wear.
10. Check and make sure all systems could not spill oil, water and air. Visually inspect and
make sure engine fan and driving belt no loosening or damage.
11. Check the fixed bolts and nuts on the engine, transmission, drive axle, and rims to ensure
that no loosening; inspect the bucket teeth and the knife plate, and replace them as
necessary;
12. Check and ensure the start-up performance of the diesel engine, the color of its exhaust,
and the sound of the engine are normal; after observing the machine while it operates for
ten minutes, inspect whether any alarm of abnormal sound or overheating exist or not.
13. Check and make sure the following parts of the machine work normally: dashboard,
lights, seat belt, reversing alarm system, generator, brake system and steering system.
At the same time, ensure that all switches, quick couplers, operating levers, pedals,
operating handles, buttons and others elements of the machines can be operated
normally.
II. Maintenance items to be performed once every 50 hours or every week
1. Drain the strainer (oil-water separator) of the engine fuel system;
2. Check and add the brake-fluid of the machine. (Note: A brake-fluid of the same model as
the original fluid must be used. Otherwise, the original fluid must be completely emptied
through a port near the brake caliper and add a new brake-fluid);
3. Check the oil level of the final reducer at each end of the drive axle, and the oil level of
the main drive in the center of the axle housing; add oil as necessary (Note: Oil of the
same model as the original oil must be used; Otherwise, the service life of the oil will be
affected.)
4. Start the machine, and after finishing one to two operating cycles, lower the arm to the
ground and then stop the engine, inspect the oil levels in the hydraulic oil tank and the
transmission and replenish the tanks as necessary (Note: Oil of the same model as the
original oil must be used; otherwise, the service life of the oil will be affected);
5. Check the gap between any brake pad and the matching brake disk and make
replacements as necessary; Tighten the fixed bolts and nuts on all transmission shafts to
ensure that no loose bolt or nut exists;
6. Carry out the following operations if these 50-hour maintenance items are performed on
the machine for the first time, or skip it: replace the engine oil, engine oil filter and diesel
oil filter elements.
