80
c) Increase the pump speed to 1500～2000rpm for 10 minutes.
d) Make the pump running at a speed of 1500～2000rpm for 5 minutes and increase
the pressure to 210kg/ cm
2
by 20～30kg/cm
2
each time. Then make each oil circuit works
for 5 minutes and then change the oil filter.
Inspect the temperature of the oil, the temperature of the surface of the pump and the
running noise when increasing the oil pressure. If the oil temperature or the temperature
of the pump’s surface increases to a over high degree, reduce the load and lower the oil
temperature. And then go on carrying on the trail.
e) Make the relieving pressure at 210kg/ cm
2
after the test and measure the flowl.
Measure the oil lever through the lifting speed.
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