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Doosan G25P-5 Plus - User Manual

Doosan G25P-5 Plus
264 pages
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SB2349E10
FORKLIFTS
D20S-5, D25S-5, D30S-5, D33S-5, D35C-5
FDA04, FDA05, FDA06, FDA07, FDA08 (Yanmar 3.3L/3.0L Tier-3)
G20E-5, G25E-5, G30E-5
FGA07, FGA08, FGA09 (HMC 2.4L Tier-3)
GC20E-5, GC25E-5, GC30E-5, GC33E-5
FGA0K, FGA0L, FGA0M, FGA0N (HMC 2.4L Tier-3)
G20P-5, G25P-5, G30P-5, G33P-5, G35C-5
FGA0A, FGA0B, FGA0C, FGA0D, FGA0E (MMC 2.4L Tier-3)
G20P-5 Plus, G25P-5 Plus,
G30P-5 Plus, G33P-5 Plus, G35C-5 Plus
FGB0H, FGB0J, FGB0K, FGB0L, FGB0M (GM 3.0L Tier-3)
GC20P-5, GC25P-5, GC30P-5, GC33P-5
FGA0P, FGA0R, FGA0S, FGA0T (MMC 2.4L Tier-3)
1703
Operation &
Maintenance Manual
Original Instruction

Table of Contents

Questions and Answers

  • S
    Samantha BuckleyAug 4, 2025
    How to troubleshoot engine cranking but not starting in Doosan G25P-5 Plus Lifting Systems (Gas)?
    • M
      Michael FordAug 4, 2025
      If your Doosan Lifting Systems engine cranks but won't start, several issues could be the cause. First, ensure the fuel tank isn't empty and is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace as needed), a faulty vapor connection (check for holes, loose clamps, or kinks), an electric fuel pump malfunction (check electrical connections, relay, and fuse), a malfunctioning fuel pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), incorrect air/fuel or ignition/spark control (see Advanced Diagnostics), or no VR Sensor signal (verify the VR signal is present).
  • P
    Pamela BrownAug 8, 2025
    Why is my Doosan Lifting Systems difficult to start (Gas)?
    • L
      lewisemilyAug 8, 2025
      If your Doosan Lifting Systems experiences difficulty starting, it might be due to several reasons. Check if the fuel tank is almost empty, as this can cause fuel pump cavitations; ensure the tank is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace), an electric fuel pump malfunction (check connections, relay, and fuse, and verify the pump is operating), a malfunctioning pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), or a clogged air filter (clean or replace as required). Also, incorrect air/fuel or ignition control could be the issue (see Advanced Diagnostics). For engine mechanical issues, consult the Engine Service Manual.
  • R
    Rebecca PittmanAug 17, 2025
    Why does my Doosan G25P-5 Plus Lifting Systems not accelerate or hesitate during acceleration (Gas)?
    • W
      Walter GarrettAug 17, 2025
      If your Doosan Lifting Systems will not accelerate, hesitates during acceleration, or the engine stalls, first isolate the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Other potential causes include a fuel tank that's nearly empty (ensure it's at least ¼ full), a clogged fuel filter (repair or replace), a pressure regulator malfunction (test its operation), or a fuel injector malfunction (test its operation).
  • T
    Thomas CarterAug 21, 2025
    How to fix rough idle on Doosan G25P-5 Plus (Gas)?
    • A
      Alexandra HouseAug 21, 2025
      If your Doosan Lifting Systems has a rough idle, isolate the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Other potential causes include a pressure regulator malfunction (test its operation), a clogged fuel filter (repair or replace), or a vacuum leak (check between mixer and throttle body, throttle body and intake manifold, and intake manifold and cylinder head).
  • J
    jennifer94Aug 25, 2025
    What causes poor high speed performance in Doosan Lifting Systems (Gas)?
    • A
      Angela CoxAug 26, 2025
      To address poor high-speed performance in your Doosan Lifting Systems, start by isolating the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Also check for a clogged fuel filter (repair or replace), a plugged fuel line (remove obstruction), a clogged air filter (clean or replace), a faulty vapor connection (check for holes, tight clamps, and kinks), a pressure regulator malfunction (test its operation). For incorrect ignition control, see Advanced Diagnostics & Engine Service Manual.
  • H
    hallabigailAug 30, 2025
    How to decrease high idle speed on Doosan G25P-5 Plus (Gas)?
    • M
      Monica PetersonAug 30, 2025
      To troubleshoot high idle speed in your Doosan Lifting Systems, check the pedal return spring travel for binding. For incorrect idle speed control, see Advanced Diagnostics & Engine Service Manual.
  • W
    wrightkarenNov 11, 2025
    What to do if Doosan G25P-5 Plus will not run continuously (Gas)?
    • S
      smithsharonNov 11, 2025
      If your Doosan Lifting Systems will not run continuously, begin by isolating the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Other potential causes include a nearly empty fuel tank (ensure it's at least ¼ full), a clogged fuel filter (repair or replace), an electric fuel pump malfunction (check connections, relay, and fuse), a pressure regulator malfunction (test its operation), or a fuel injector malfunction (test its operation). For incorrect idle speed or ignition problems, see Advanced Diagnostics. For engine mechanical issues, co...

Doosan G25P-5 Plus Specifications

General IconGeneral
Load Capacity2500 kg
Tire TypePneumatic
TransmissionAutomatic
ModelG25P-5 Plus
Travel Speed20 km/h
Lowering Speed500 mm/s
Overall Width1150 mm
Power TypeDiesel
Rated Capacity2500 kg

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