Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual – SB4469E00

Description

Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual – SB4469E00

This Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual is the full workshop reference for the G20G PLUS, G25G PLUS and G30G PLUS LP-gas counterbalance trucks. Issued by Doosan Corporation Industrial Vehicle in August 2017 under document number SB4469E00, it is the manual Doosan service engineers and mechanics use to diagnose, disassemble, repair and reassemble every major system on these trucks. Every procedure, torque value, pressure reading and clearance in this Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual comes directly from the OEM service documentation.

File Details

• Manual type: Vehicle Service Manual (workshop / repair)
• Brand: Doosan (Doosan Corporation Industrial Vehicle)
• Models covered: G20G PLUS, G25G PLUS, G30G PLUS
• Document number: SB4469E00
• Edition / date: August 2017
• Language: English
• Format: PDF
• Approximate length: 310 pages

Chapters Covered

• 1. General – how to use the manual, warning label definitions, glossary, exterior views and specifications, safety precautions, maintenance schedule, fuel/lubricant specifications, recommended viscosities and refill capacities, disassembly/assembly instructions, standard torques for bolts, nuts and fittings
• 2. Powertrain – overview and power flow, service tools, torque converter (exterior/specifications, operation, stall test, removal and installation), transmission (exterior/specifications, mechanical section, hydraulic section, oil/oil filter/strainer replacement, pressure test, removal and installation of engine, transmission, pump assembly, inching valve, control valve assembly, strainer, gearbox, differential), drive axle (exterior, operation, oil replacement, drive wheel removal/installation, drive axle removal/installation, wheel hub disassembly/assembly), troubleshooting
• 3. Hydraulic System – components, oil flow, hydraulic main pump (exterior/specifications, operation, removal/installation, disassembly/assembly), hydraulic tank, filter and strainer (exterior/specifications, operation, suction strainer/return filter/air breather replacement), troubleshooting
• 4. Lift / Tilt / Auxiliary System – components, oil flow, control valve (exterior/specifications, operation, relief valve pressure check and adjustment, removal/installation, disassembly/assembly), mast assembly (exterior, operation, forks service, chains service, cylinders service, carriage service, mast service), troubleshooting
• 5. Steering System – components, oil flow, steering control group (exterior/specifications, operation, system pressure check, steering wheel removal/installation, steering unit removal/installation and disassembly/assembly), steering operation group (exterior/specifications, operation, steer wheel and bearing service, steer axle removal/installation, steering knuckle/kingpin/bearing service, steer cylinder removal/installation and disassembly/assembly), troubleshooting
• 6. Brake System – components, brake drum (specifications, operation, adjustment, brake test), service brake pedal assembly (exterior/specifications, operation, air removal, pedal adjustment, master cylinder removal/installation and disassembly/assembly), parking brake lever assembly (exterior, operation, adjustment), troubleshooting
• 7. Chassis / Miscellaneous – hood removal/installation, overhead guard removal/installation, counterweight removal/installation, OSS (operator sensing system) operation and troubleshooting, ground speed control (exterior/specifications, operation, removal/installation)
• 8. Schematics – hydraulic schematic, electrical schematic

Coverage extends across the whole truck: the G424-family LP-gas engine as fitted to the G20G/G25G/G30G PLUS, the powershift transmission and torque converter, the drive axle and wheel hubs, the hydraulic main pump and tank, the control valve with priority, relief and lift-lock sections, the STD/FFL/FFT mast variants with their chains and cylinders, the hydrostatic rear steer axle, the shoe-type service and parking brakes, plus wiring and hydraulic schematics. The specification tables alone are worth the file – vehicle dimensions for the 2.0t, 2.5t and 3.0t chassis, performance figures, mast and carriage data, wheel and tyre sizes, transmission gear ratios, pump displacements, relief valve settings, standard torque charts for metric and inch fasteners, and O-ring, flare and pipe-thread fitting torques.

Why This Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual Matters

These trucks run their entire service life in warehouses, yards and loading docks where downtime is expensive. The Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual is what lets a mechanic perform the job once, to the correct specification, without guessing. It shows the exact dismantling sequence for a torque converter, the precise relief valve pressures for lift, tilt and auxiliary circuits across the 2.0t, 2.5t and 3.0t variants, the transmission pressure test values at low idle and 1800 rpm, mast bearing shim selection by part number and bearing size, brake shoe adjustment intervals, tilt cylinder drift limits, chain wear percentage formula, and OSS controller pin-level troubleshooting. For a technician maintaining a fleet of Doosan G-series LP trucks, having SB4469E00 on hand is the difference between a repair that holds and a repair that comes back.

What You Can Do With It

• Service and repair the G424P(E), G424F and G424FE LP-gas engine installation, engine mounts and cooling circuit
• Rebuild the torque converter, powershift transmission, inching valve and differential
• Pull and reseal the drive axle and wheel hubs, replace drive axle oil to spec
• Overhaul the hydraulic main pump, control valve sections and priority spool
• Adjust or rebuild STD, FFL and FFT masts, chains, carriage rollers and lift/tilt cylinders
• Service the steering unit, steer axle, kingpins and steer cylinder
• Adjust the automatic brake drum, bleed the brake system and set pedal free play
• Diagnose OSS, ground speed control and electrical faults from the schematics

Get Instant Access to the Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual

Buying the Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual gives you the same coverage a Doosan service technician uses – disassembly and assembly sequences, system operation theory, pressure and torque specifications, drift limits, wear limits, relief valve settings and troubleshooting flow charts for the 2.0t, 2.5t and 3.0t LP-gas trucks.

IMAGES PREVIEW

The correct procedures and specifications matter: a mismatched torque, wrong shim, incorrect brake adjustment or a mis-set relief valve leads to premature failure, unsafe operation and repeat labour. Because this Doosan G20G G25G G30G PLUS Forklift Vehicle Service Manual is delivered as an instant-download PDF after purchase, there is no shipping wait and no lost paper copy. Read it on a laptop in the workshop, a tablet on the machine, or print only the pages you need for the job at hand. Every section of SB4469E00 is there, ready the moment you need it.