OPERATIONAL PERFORMANCE TEST / Standard T4-2-3 Performance Test Performance Standard Remarks Reference Page CONTROL LEVER STROKE mm Boom Lever Arm Lever (ISO Lever Pattern: Swing Lever) Bucket Lever Swing Lever (ISO Lever Pattern: Arm Lever) Travel Lever 97±10 82±10 82±10 97±10 120±10 Hitachi Lever Pattern T4-4-16 Boom Raise/Swing sec Bucket Teeth Height: H mm 4.9±0.2 8300±400 Backhoe: 3.7 m Arm 3.5 m3 (PCSA heaped) Bucket, Bucket empty T4-4-17 COMPONENT TEST PRIMARY PILOT PRESSURE MPa (kgf/cm2) Engine: Slow Idle Engine: Fast Idle 3.9+0.7 −0.2 (40+7.0 ) −2.0 3.9+1.0 0 (40+10 ) 0 T4-5-1 SECONDARY PILOT PRESSURE MPa (kgf/cm2) 3.4 to 4.0 (34 to 40) Value indicated on Dr. ZX (Lever:
Full Stroke) T4-5-3 SOLENOID VALVE SET PRESSURE MPa (kgf/cm2) ±0.2 (2) Value indicated on Dr. ZX T4-5-4 MAIN RELIEF PRESSURE MPa (kgf/cm2) T4-5-8 Backhoe When each Boom, Arm, Bucket Relief Operation When Power Digging 31.9+1.0 −1.5 (325+10 ) −15 34.3+1.0 −1.5 (350+10 ) −15