BODY (UPPERSTRUCTURE) / Pump Device REMOVAL AND INSTALLATION OF PUMP DEVICE Removal 1. Remove the cab with the cockpit attached. (Refer to REMOVAL AND INSTALLATION OF CAB on W2-1.) Main Pump Regulator Priority Valve CAUTION: Pump device weight: ZW220: 83 kg (185 lb) ZW250: 107 kg (240 lb) 2. Remove sems bolts (1) (6 used) from hydraulic oil tank (4). Remove cover (2) and suction filter (3) from hydraulic oil tank (4). Drain hydraulic oil. Pump Delivery Pressure Switch Pilot Pump T4GB-01-02-009 1 2 : 14 mm 3. Disconnect hoses (5) (2 used) from main pump (6). Cap the open ends. Attach an identification tag onto the disconnected hoses for assembling. 3 4 W4GB-02-03-010 5 6 Control Valve :
19 mm, 22 mm W4GB-02-04-012 W2-6-1