SUNWARD SWE50B, Operation & Maintenance Manual

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5.5.9 Every 2000 Hours Service
Carry out the maintenance for every 50hours, 100 hours, 250
hours, 500 hours and 1000hours service at the same time.
Replace oil suction filter and hydraulic oil
Note

High pressure may build in hydraulic oil. Always release
pressure and cool down oil temperature before
attempting any maintenance operation.

Determine replace interval based on the type of hydraulic
oil. The interval differs according to different type of
hydraulic oil.

Determine replace interval based on work condition
when using hydraulic breaker, the maintenance and
replacement interval should be shortened by half.

Swing upper-structure by 90 degree; stop the machine at
firm level ground.

Clean upper hydraulic oil tank to prevent dirt from getting
into hydraulic system.

Remove oil fill cap (2).

Remove oil suction filter and suspension rod unit (4).

Use pump to drain hydraulic oil from oil tank, remove
drain plug (3) located on bottom oil tank to drain the
residual oil to a container.

Clean up hydraulic oil tank; re-install drain plug (3).

Replace oil suction filter, re-install suspension rod unit (4),
and oil fill cap (2).

Add fresh hydraulic oil; install lock cover (1).

Start engine, run it at low speed to bleed the air in main
pump and system.

Stop the engine.
5.6 Fault and Repair
5.6.1 Beyond Faults
The following things are not belong to fault.
1.When arm retract, the speed of arm will be decreased when arm
exceed and less than vertical place.
Figure 6.1.1