LiuGong CLG2020H/C-2035H/C & CLG2020G-2035G Forklift Service Manual 2020 PDF

Description

LiuGong CLG2020H/C-2035H/C & CLG2020G-2035G Forklift Service Manual

This LiuGong CLG2020H/C-2035H/C & CLG2020G-2035G Forklift Service Manual is the complete workshop reference for the H/C-series diesel and G-series gasoline/LPG forklift trucks. Published in November 2020 under document number 202011005, it covers eight models across the 2.0 to 3.5 tonne range and provides the detailed technical information needed for professional maintenance, repair, and overhaul. Whether you are servicing a single forklift or managing a mixed fleet, this manual brings together engine data, hydraulic circuits, transmission overhaul procedures, brake servicing, electrical diagnostics, and mast system repair into one comprehensive document.

File Details

• Manual type: Service Manual
• Brand: LiuGong
• Models covered: CLG2020H/C, CLG2025H/C, CLG2030H/C, CLG2035H/C, CLG2020G, CLG2025G, CLG2030G, CLG2035G
• Document number: 202011005
• Publication date: November 2, 2020
• Language: English
• Page count: 414 pages
• File format: PDF

Chapters Covered

• General Information — Preface, how to read the manual, complete machine identification and parameter identification, engine identification, standard torque table, torque specifications for metric hardware, unit conversion table, cable code identification, coating materials, weight table, oil specifications, main components, applications and specifications
• Power System — Safety, system overview, engine system, air intake system, exhaust system, cooling system, fuel system, recommended oil and oil change cycle, removal and installation of engine, air filter, muffler assembly, radiator assembly, fuel tank cover plate, faults and countermeasures
• Power Train System — Safety, system overview, system parameters, drive axle-transmission assembly, torque converter, oil pump assembly, main pressure regulating valve and relief valve, solenoid steering control valve, clutch, drive axle assembly, front and rear wheel assemblies, steering axle, test and adjustment, transmission, drive axle, removal and installation, disassembly and assembly, faults and countermeasures
• Hydraulic System — Safety precautions, overview, technical parameters, schematic diagrams, work hydraulic system, hydraulic oil tank, banked direction control valve, oil pump assembly, commissioning, steering hydraulic system, steering wheel assembly, steering gear, steering pressure test, hydraulic cooling system, mast hydraulic system, lift cylinder and tilt cylinder disassembly, speed limit valve and explosion-proof valve, tilt cylinder mounting system, common faults and reasons
• Brake System — Safety, system overview, structure and function, brake master cylinder, wheel brake, service brake system and auxiliary braking system, commissioning of service brake distance and pedal height, parking brake system, removal and installation, faults and countermeasures
• Electrical System — Basic information, overview, power system, fuse and relay, electric lock, instrument system, alternator, starter, sensor, electronic steering system, brake indicator system, lighting system, battery, preheating, horn, OPS, fault code tables for Cummins, PSI, Kubota, and Mitsubishi D04EG engines
• Frame System — Safety, frame system overview, subsystem overview, frame assembly, balancing weight assembly, removal and installation of front crossbeam plate, rear crossbeam plate, front side hood, rear side hood, steering axle rubber gasket, steering axle bracket, balancing weight assembly, faults and countermeasures
• Mast System — Mast system overview, two-stage wide view mast, two-stage full-free mast, three-stage full-free mast, mast system parameters, removal and installation of fork, fork arm carrier, mast assembly, lift cylinder (side and center), tilt cylinder, installation of mast pipe, common fault analysis and troubleshooting
• Covering Part System — Safety, system overview, floor assembly, access door, steering wheel cover, instrument cover, front and rear cover plates, seat and engine hood, overhead guard
• Appendix — Hydraulic system schematic diagrams (double spools, three spools, four spools), electrical system schematic diagrams for Yanmar, Cummins, Mitsubishi S4S, Mitsubishi D04EG, PSI dual fuel, PSI single fuel, Kubota dual fuel, Kubota single fuel, and Nissan engines, brake system schematic diagram

This LiuGong forklift service manual goes well beyond routine maintenance. Each system chapter opens with a functional overview and technical parameters before walking through removal, installation, disassembly, and assembly procedures with step-by-step instructions. The hydraulic section includes full circuit schematics for both the work system and steering system, along with detailed valve and cylinder overhaul procedures. The electrical section provides wiring diagrams, component positions, connector pinouts, and complete fault code tables for Cummins, PSI, Kubota, and Mitsubishi D04EG engines, making it a genuine diagnostic resource rather than just a repair guide. The power train chapter covers the YD30 transmission and CQ30 drive axle in depth, including torque converter operation, clutch servicing, and differential assembly. The mast chapter supports two-stage wide view, two-stage full-free, and three-stage full-free configurations with pipe routing diagrams and chain adjustment procedures.

Engine Coverage

The manual supports a wide range of engine variants fitted to these forklift models, including Cummins QSF2.8T3NA49 and QSF2.8T3NA60, Yanmar 4TNE92 and 4TNE98, Mitsubishi S4S and D04EG, PSI 4G64 in dual-fuel and single-fuel configurations, Nissan K25, and Kubota WG2503-GL-E3 and WG2503-L-E3. Engine identification, technical parameters, and fault code tables are provided for each variant, so you can work on any configuration covered by the CLG2020H/C-2035H/C and CLG2020G-2035G series.

What This Manual Enables You to Do

With this CLG2020H/C-2035H/C & CLG2020G-2035G service manual on hand, you can confidently tackle engine removal and installation, transmission and drive axle overhaul, hydraulic pump and control valve servicing, brake system repair and adjustment, electrical troubleshooting using wiring diagrams and fault code tables, mast and cylinder disassembly, and steering axle maintenance. The specifications tables give you the torque values, pressures, clearances, and capacities needed to work to manufacturer standards. The fault diagnosis sections help you trace symptoms to root causes without guesswork. Whether you are a professional technician, a fleet maintenance manager, or an experienced owner-operator, this manual provides the depth and detail required to keep these forklifts running correctly.

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Delivered as an instant PDF download, the manual is ready to view on any device and can be printed for workshop use. No shipping, no waiting — get the complete LiuGong CLG2020H/C-2035H/C & CLG2020G-2035G forklift service manual and put the full factory service information to work on your machine today.