... valve ActuatorsFull flow filterCheck valve(1)5.0kgf/cm2Check valve (2 )3 .0kgf/cm2Check valve (3) 1.5kgf/cm2Oil cooler25073HC02
3- 4 3. DRAIN CIRCUITBesides internal leaks from the motors and main pump, ... hydraulic tank through the control valve and the oilcooler.To oil coolerSuction filter(290LC-7) 3- 2
3- 3 All oil from each actuator returns to the hydraulic tank through the contro...
... of oil from components.Check for loose or damage of wiring and connections.1)(1) (2) (3) (4)(5)①②③①②③
YESYESNONO 6-5 2. DRIVE SYSTEMUNUSUAL NOISE COMES OUT OF PUMP CONNECTION1)Remove dust plugunder ... and eliminatethe air intrudingsource .3. HYDRAULIC SYSTEMHYDRAULIC OIL IS CLOUDY1)HYDRAULIC OIL TEMPERATURE HAS RISEN ABNORMALLY2)Cause RemedyCause Remedy
6-8 NONONONOYESNOYESYESYESIs hyd...