SB2302E06 Operation & Maintenance Manual - Lift Trucks D20S-3, D25S-3, D30S-3, D33S-3 / G20E-3, G25E-3, G30E-3 / GC25E-3

Oct 24, 2026

Operation & Maintenance Manual covering Daewoo Doosan lift trucks across multiple series (D, G, GC, and dual-fuel configurations). Provides safety and compliance warnings, including training requirements and California Proposition 65 notices. Includes structured guidance from safety rules and hazard information, to daily operation procedures, diagnostic fault codes, and operating techniques. Also covers specifications, capacity charts, serial number information, and detailed maintenance references such as inspections, torque specifications, fuel and lubricant data, and scheduled service intervals.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages205

Reading Time8 h 37 min

AccessFree to download

Foreword

Literature Information

Important Safety Information

Safety

Warning Signs and Labels

Parking brake

General Hazard Information

Operation Information

Maintenance Information

Operator Restraint System (If Equipped)

Avoiding Lift Truck Tipover

Safety Rules

How to Survive in a Tipover

Specifications

Noise and Vibration

Capacity Chart

Serial Number

Operator's Warning and Identification Plate

Operator's Station and Monitoring Systems

Lift Truck Controls

Refueling

Before Starting the Engine

Starting the Engine

Dual Fuel System (If Equipped)

Lift Truck Operation

Advanced Diagnostics

Table a. MI-04 Diagnostic Fault Codes (Flash Codes)

Auto Shift Controller ASC-100 (If Equipped)

Operating Techniques

Parking the Lift Truck

Lift Fork Adjustment

Storage Information

Transportation Hints

Towing Information

Inspection, Maintenance and Repair of Lift Truck Forks

Tire Inflation Information

Torque Specifications

Cooling System Specifications

Fuel Specifications

Lubricant Information

Maintenance Intervals

Every 10 Service Hours or Daily

Every 250 Service Hours or Monthly

Every 1000 Service Hours or 6 Months

Every 2000 Service Hours or Yearly

Every 4500 Service Hours or Two Years

Index

SB2302E06 Operation & Maintenance Manual LIFT TRUCKS D20S-3, D25S-3, D30S-3, D33S-3 G20E-3, G25E-3, G30E-3 GC20E-3, GC25E-3, GC30E-3 G20P-3, G25P-3, G30P-3, G33P-3 GC20P-3, GC25P-3, GC30P-3 D32S-3 (6,500lb@24"L.C.) G32E-3 (6,500lb@24"L.C.) G32P-3 (6,500lb@24"L.C.) GC32E-3 (6,500lb@24"L.C.) GC32P-3 (6,500lb@24"L.C.) |
WARNING | | --- | | Do not start, operate or service this machine unless you have read and understood these instructions and received proper training.
Unsafe or improper use of the machine may cause serious injury or death. Operators and maintenance personnel must read this manual and receive training before operating or maintaining the machine.
This manual should be kept with the machine for reference and periodically reviewed by the machine operator and by all personnel who will come into contact with it. | The following warning is provided pursuant to California Health & Safety Code Sections 25247.5 et, seq, |
WARNING | | --- | | California Proposition 65
Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
WASH HANDS AFTER HANDLING. | Information Section Table of Contents Information Section Foreword ................................................................ 2 Literature Information............................................. 2 Safety Section Important Safety Information ................................. 4 Safety ..................................................................... 5 Warning Signs and Labels .................................. 5 Parking brake...................................................... 9 General Hazard Information ............................. 10 Operation Information ....................................... 11 Maintenance Information .................................. 14 Operator Restraint System(If Equipped) .......... 17 Avoiding Lift Truck Tipover ............................... 21 Safety Rules ..................................................... 23 How to Survive in a Tipover .............................. 28 General Section Specifications ....................................................... 30 Noise and Vibration ............................................. 50 Capacity Chart ..................................................... 51 Serial Number ...................................................... 61 Operator's Warning and Identification Plate ........ 64 Operation Section Operator's Station and Monitoring Systems ........ 65 Lift Truck Controls ................................................ 69 Refueling .............................................................. 72 Before Starting the Engine................................... 75 Starting the Engine .............................................. 78 Dual Fuel System (If G424 Dual Fuel Engine Equipped) ............................................................ 81 Dual Fuel System (G424E Engine Only) ............. 83 Lift Truck Operation ............................................. 86 G424E/G430E Electronic Controlled LP Engines (If Equipped) ........................................................ 89 Advanced Diagnostics ....................................... 104 Table a. MI-04 Diagnostic Fault Codes (Flash Codes) ............................................................... 106 Auto Shift Controller ASC-100 (If Equipped) ..... 112 Operating Techniques ........................................ 115 Parking the Lift Truck ......................................... 119 Lift Fork Adjustment ........................................... 120 Storage Information ............

FAQs

Who should read and get training before using or servicing the lift truck?

Operators and maintenance personnel must read the manual and receive proper training before operating or maintaining the machine.

What safety information is emphasized in the warnings?

The manual stresses that unsafe or improper use can cause serious injury or death, and it should be kept with the machine and reviewed periodically.

Which topics are covered in the manual besides safety?

It includes operation information, transportation hints, towing information, and maintenance data such as inspections, torque specifications, fuel and lubricant specifications, and maintenance intervals.

Oct 24, 2026

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