OPERATIONAL PERFORMANCE TEST / Standard T4-2-22 NOTE: 1 mm=0.03937 in PERFORMANCE TEST DESIGNATION ZX270-3 class (Performance Standard) Remarks Reference Page MAIN RELIEF VALVE PRESSURE MPa (kgf/cm2, psi) T4-5-9 Boom, Arm, Bucket (Relief operation for each) 34.3+2.0 -0.5 (350+20 , -5 4987+291 ) -73 Value indicated on Dr. ZX Relief operation of Positioning (2-piece boom only) 35.5+2.0 -0.5 (362+20 , -5 5161+291 ) -73 Value indicated on Dr. ZX Power Digging 36.3+2.0 -1.0 (370+20 , -10 5277+291 ) -145 Value indicated on Dr. ZX RELIEF PRESSURE MPa (kgf/cm2, psi) (Relief operation of Swing) 33.3+2.3 -0.5 (340+23 , -5 4841+334 ) -73 Value indicated on Dr.
ZX T4-5-13 OVERLOAD RELIEF PRESSURE MPa (kgf/cm2, psi) (Reference values at 50 L/min) T4-5-15 Boom Lower, Arm Roll-In, Bucket Roll-In 37.2+1.0 -0 (379+10 , -0 5408+145 ) -0 Boom Raise, Arm Roll-Out, Bucket Roll-Out 39.2+1.0 -0 (400+10 , -0 5699+145 ) -0 MAIN PUMP FLOW RATE (L/min) - Refer to pages T4-2-10, 11. T4-5-18 SWING MOTOR DRAINAGE (L/min) T4-5-26 With constant speed 0.2 to 0.6 With the motor relieved (5 to 12) TRAVEL MOTOR DRAINAGE (L/min) T4-5-29 With the track jacked up Less than 10 Allowable limit: 10 With the motor relieved Less than 15 Allowable limit: 15