TOPMAQ TW08 MINI, Operation & Maintenance Manual

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Inspection and maintenance of hydraulic system
Caution: during operation, the hydraulic system may become very hot. Please cool the machine down
before inspection or maintenance!
1. Before maintenance of the hydraulic system, make sure the machine is parked on flat and solid ground.
2. Lower the bucket onto ground and shut down the engine.
3. Do not start any maintenance until the systems, hydraulic oil and lubricant completely cool down, as the
hydraulic system may be still hot and pressurized as soon as the machine is turned off.
a. Drain the air out of hydraulic oil reservoir to release internal pressure.
b. Cool the machine down.
Caution: inspection and maintenance of hot and pressure parts may cause them or hydraulic oil to
spray out, leading to injury!
c. While removing the bolts or nuts, do not have your body facing them, as the hydraulic parts, even if
they cool down, still have built-up pressure.
d. Never try to check the traveling or slewing motor circuits on a slope, as they may be pressurized due to
their dead weight.
4. While connecting the hydraulic hoses and pipelines, keep the seal surface free of any dirt:
a. Clean the hose, the pipeline and inside of hydraulic oil tank with detergent, and then thoroughly dry
them.
b. Ensure seal O-rings are free of any damage or defects.
c. While connecting the pressure hose, do not twist it; otherwise its service span will be shortened. .
d. Carefully tighten the low-pressure hose clamp.
5. The hydraulic oil used should be the same grade as the machine has been supplied with. Namely, do not mix
the hydraulic oil with different grades. The hydraulic oil has been added before delivery, and therefore,
please use the recommended oil. All oil in the system should be changed at once if oil has been mixed.
6. With no hydraulic oil, never start up the engine.