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Komatsu FG20N-17, FG25-17, FG25H-17 Internal Combustion Forklift Shop Manual (SEN05692-08)

Format: PDF (Printable Document)

File Language: English

File Pages: 422

File Size: 27.72 MB (Speed Download Link)

Brand: Komatsu

Model: FG20N-17, FG25-17, FG25H-17 Internal Combustion Forklift

Book No: SEN05692-08

Type of Document: Shop Manual

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Komatsu FG20N-17, FG25-17, FG25H-17 Internal Combustion Forklift Shop Manual (SEN05692-08)

These Komatsu FG20N-17, FG25-17, FG25H-17 internal combustion forklifts are mid-size warehouse/yard trucks, usually moving pallets in loading bays, factories, and small yards. The people who reach for the Komatsu FG20N-17, FG25-17, FG25H-17 Internal Combustion Forklift Shop Manual (SEN05692-08) are shop mechanics and field techs who actually tear into engines, transmissions, masts, and hydraulics. They’re usually trying to sort hard faults, do full component swaps, or rebuilds without guessing.

What this manual helps you do

  • Trace hydraulic issues in the lift/tilt circuits using the kind of diagnostic steps and schematics shops rely on.
  • Check engine and fuel system faults on these LPG/IC trucks using the normal workshop test and inspection flow.
  • Follow teardown and reassembly sequences for major components like the mast, steer axle, and drive line so parts go back in the right order.
  • Diagnose brake and steering problems with the kind of step‑by‑step checks you’d expect in a factory shop manual.
  • Handle adjustment and calibration tasks after repairs so the truck lifts, steers, and drives the way it should.

Who this is for

This is a shop manual, so it’s aimed at field techs, dealership service, and independent workshop mechanics. If you’re just operating the truck or only need daily/weekly maintenance info, you want the operation and maintenance manual instead, not this one.

FAQ

Q: Is this a PDF I can search and print?

A: Yes, this type of shop manual is normally supplied as a searchable PDF you can print sections from as needed.

Q: Does it go deep enough for full overhauls?

A: Shop manuals like SEN05692-08 are written for full repair work, from diagnostics through disassembly and reassembly.

Q: How do I know it matches my exact truck?

A: You’ll want to match your model designation and serial tag to FG20N-17, FG25-17, or FG25H-17 before you buy.

Bottom line: If you’re wrenching on these forklifts beyond oil changes and need factory-style repair guidance, this is the right book; if you just need basic operation and service intervals, keep looking for the O&M manual instead.

📘 Show Index

Table of Contents:

  • DESCRIPTION OF THE SYMBOLS
  • SECTION INDEX
  • 10. GENERAL AND SPECIFICATIONS
    • SPECIFICATIONS
    • PERIODIC REPLACEMENT OF CONSUMABLE PARTS
    • SAFETY ITEMS FOR MAINTENANCE
    • STANDARD TIGHTENING TORQUE FOR BOLTS
    • STANDARD TIGHTENING TORQUE FOR PIPE JOINTS
  • 20. TESTING AND ADJUSTING
    • SERVICE DATA
    • HOW TO DECOMPRESS THE HYDRAULIC PIPING
    • GASOLINE ENGINE
    • DIESEL ENGINE
    • AIR CLEANER
    • ADJUSTMENT OF IGNITION TIMING
    • ADJUSTMENT OF FUEL INJECTION TIMING
    • MEASUREMENT OF COMPRESSION
    • ADJUSTMENT OF VALVE CLEARANCE
    • TIGHTENING TORQUE OF CYLINDER HEAD MOUNTING BOLTS
    • REPLACEMENT OF CLUTCH DISC
    • TORQFLOW TRANSMISSION CASE
    • DIFFERENTIAL CASE
    • HYDRAULIC TANK
    • MEASUREMENT OF HYDRAULIC DRIFT OF LIFT AND TILT CYLINDERS
    • ADJUSTMENT OF CLUTCH AND BRAKE PEDAL
    • ADJUSTMENT OF INCHING AND BRAKE PEDAL
    • ADJUSTMENT OF ACCELERATOR PEDAL
    • ADJUSTMENT OF PARKING BRAKE LEVER
    • ADJUSTMENT OF CABLES OF THE FORWARD AND BACKWARD CONTROL LEVER AND THE HIGH AND LOW SPEED LEVER
    • WHEEL BRAKE
    • BLEEDING AIR
    • DESIGNATED FUEL AND LUBRICATING OIL
    • LIST OF LUBRICANT AND GREASE
  • 30. REMOVAL AND INSTALLATION
    • OVERALL DISASSEMBLY AND ASSEMBLY
    • WEIGHT TABLE
    • MAST
    • CHAIN (DOUBLE MAST)
    • CHAIN (TRIPLE MAST)
    • LIFT CYLINDER
    • POWER LINE
    • DRIVE AXLE AND TRANSFER
    • ALIGNMENT OF POWER LINE (1)
    • ALIGNMENT OF POWER LINE (2)
    • STEERING AXLE AND POWER STEERING
    • WHEEL BRAKE
  • 40. DISASSEMBLY AND ASSEMBLY
    • CLUTCH
    • CLUTCH MASTER CYLINDER
    • CLUTCH BOOSTER ASSEMBLY
    • CLUTCH TRANSMISSION
    • TORQUE CONVERTER
    • TORQFLOW TRANSMISSION
    • DIFFERENTIAL
    • DIFFERENTIAL ASSEMBLY DRAWING
    • WHEEL BRAKE
    • BRAKE MASTER CYLINDER
    • COMBINATION SWITCH
    • SOLENOID VALVE
    • STEERING VALVE
    • STEERING AXLE
    • POWER STEERING CYLINDER ASSEMBLY
    • LIFT CYLINDER
    • TILT CYLINDER
    • CONTROL VALVE
    • MAST
    • FORK CARRIAGE
    • FLOW DIVIDER
    • RESERVOIR ASSEMBLY
    • HYDRAULIC PUMP
    • UNIVERSAL JOINT
  • 50. MAINTENANCE STANDARD
    • CLUTCH RELIESE CYLINDER
    • CLUTCH
    • CLUTCH TRANSMISSION
    • TORQUE CONVERTER
    • TORQFLOW TRANSMISSION
    • TRANSMISSION CONTROL VALVE
    • DIFERENTIAL
    • WHEEL BRAKE
    • BRAKE MASTER CYLINDER
    • CLUTCH MASTER CYLINDER
    • BRAKE BOOSTER
    • CLUTCH BOOSTER
    • STEERING AXLE
    • POWER STEERING VALVE
    • POWER STEERING CYLINDER
    • LIFT CYLINDER
    • TILT CYLINDER
    • CONTROL VALVE
    • MAST, FORK CARRIAGE AND FORK
    • HYDRAULIC PUMP
    • UNIVERSAL JOINT
  • 60. STRUCTURE AND FUNCTION
    • TORQUE CONVERTER, GEAR PUMP AND CONTROL VALVE
    • BRAKE BOOSTER
    • FLOW DIVIDER
    • CLUTCH BOOSTER
    • TILT CYLINDER
    • WORK EQUIPMENT CONTROL VALVE
    • VEHICLE CONTROLLER
    • AS CONTROLLER (FORKLIFT TRUCK WITH SEAT BELT INTERLOCK)
    • HYDRAULIC STEERING SYSTEM
    • HYDRAULIC CIRCUIT DRAWING
    • P-PORT OIL PRESSURE MEASURING PORT
    • FUSE LOAD LIST
    • FUSE LOAD LIST (FORKLIFT TRUCK WITH SEAT BELT INTERLOCK)
    • ELECTRICAL CIRCUIT DRAWING
  • 80. CRITERIA FOR PERIODICAL INSPECTION AND JUDGMENT
    • ENGINE
    • POWER TRAIN
    • TRAVELING SYSTEM
    • STEERING SYSTEM
    • BRAKING SYSTEM
    • WORK EQUIPMENT
    • HYDRAULIC SYSTEM
    • CHASSIS AND SAFETY SYSTEM
    • OVERALL TEST
  • 90. CONVERSION TABLE
    • MILLIMETERS TO INCHES
    • INCHES TO MILLIMETERS
    • CUBIC METERS TO CUBIC YARDS
    • CUBIC YARDS TO CUBIC METERS
    • LITER TO U.S. GALLON
    • U.S. GALLON TO LITER
    • LITER TO U.K. GALLON
    • U.K. GALLON TO LITER
    • KILOGRAM TO POUND
    • POUND TO KILOGRAM
    • KG/CM2 TO IB/IN2
    • KGM TO FT IB
    • TEMPERATURE
  • APPENDIX

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