MAINTENANCE SAFETY CRITICAL PARTS 3-23 WA320-3MC No. Safety critical parts for periodic replacement Replacement interval Qty. 1 Fuel hose (fuel tank - strainer) Every 2 years or 4000 hours, whichever comes first 1 2 Fuel return hose (strainer - injection pump) 1 3 Fuel return hose (injection pump - fuel tank) 1 4 Steering hose (pump - priority valve) 1 5 Steering hose (priority valve - orbitrol valve) 1 6 Steering hose (orbitrol valve - steering valve) 2 7 Steering hose (orbitrol valve - steering valve) 2 8 Steering hose (orbitrol valve - steering valve) 4 9 Steering hose (steering cyl.
line - cushion valve) 2 10 Packings, seals, O-rings of steering cylinder 2 11 Brake hose (pump - accumulator charge valve 2 12 Brake hose (check valve - tandem valve) 3 13 Brake hose (check valve - single valve) 2 14 Brake hose (check valve - accumulator port) 1 15 Brake hose (Tandem valve - front brake) 2 16 Brake hose (Tandem valve - rear brake) 2 17 Brake hose (single valve - tandem valve) 1 18 Brake hose (tandem valve - drain block) 1 19 Brake hose (single valve - drain block) 1 20 Brake hose (drain block - hydraulic tank) 1 21 Brake hose (accumulator - reduction valve) 1 22 Brake hose (transmission valve - reduction valve) 1 23 Brake hose (reduction valve - parking brake chamber) 1 24 Brake hose (Parking - reduction valve) 1 25 Brake hose (reduction valve - charge valve drain) 1 26 Brake hose (charge valve drain - hydraulic tank) 1 27 Seat belt Every 3 years 1