Original Illustrated Factory Workshop Service Manual for Caterpillar GAS Lift Truck GC-Series. Original factory manuals for Caterpillar Lift Trucks contains high quality images, circuit diagrams and instructions to help you to operate, maintenance and repair your truck. All Manuals Printable, without restrictions, contains Searchable Text and bookmarks Covered models: GC20N (AT90-10121-up) GC25N (AT90-10121-up) GC28N (AT83F-10121-up) GC30N (AT83F-10121-up) GC33N (AT83F-60121-up) Format: PDF, 343 Pages Language: English Contents: GENERAL INFORMATION Model View, Truck Models Covered, Serial Number Locations, Dimensions, Technical Data COOLING SYSTEM Specification, Structure, Removal and Installation, Inspection and Adjustment ELECTRICAL SYSTEM Chassis Electrical Devices Wiring Outline, Structure, Console Box, Battery, Wire Color, Troubleshooting, Electrical Schematic CONTROLLERS Outline, Main Functions, Service Tool Functions, Locations of Sensors and Switches POWER TRAIN Removal and Installation POWERSHIFT TRANSMISSION Structure and Function, Removal and Installation, Control Valve, Input Shaft Assembly, Oil Pump Assembly, Inspection and Adjustment, Troubleshooting, Tightening Torque, Service Data FRONT AXLE Structure, Removal and Installation, Disassembly and Reassembly, Service Data REDUCTION DIFFERENTIAL Structure and Function, Removal and Installation, Disassembly and Reassembly, Troubleshooting REAR AXLE Structure and Functions, Removal and Installation, Disassembly and Reassembly, Troubleshooting, Service Data BRAKE SYSTEM Structure, Disassembly and Reassembly, Inspection and Adjustment, Troubleshooting, Service Data STEERING SYSTEM Structure and Functions, Disassembly and Reassembly, Steering Valve, Trobleshooting, Service Data HYDRAULIC SYSTEM Structure and Functions, Disassembly and Reassembly, Inspection and Adjustment, Troubleshooting, Service Data, Control Valve MAST AND FORKS Mast Systems, Structure, Removal and Installation, Disassembly and Reassembly, Inspections and Adjustment, Troubleshooting, Service Data SERVICE DATA Maintenance Schedule, Tightening Torques for Standard Bolts and Nuts, Parts to be Changed Periodically, Lubrication Instructions, Weight of Major Components, Special Service Tool