To Next PageTo Next PageWhat to do if the engine does not respond to the accelerator pedal on Toyota 8FGU15 Forklifts?
If your Toyota Forklifts engine isn't responding when you press the accelerator pedal, the issue might stem from the injection pump. Try servicing or replacing the injection pump to resolve this.
Why does the idle speed deviate from the specified value in Toyota Forklifts?
If your Toyota Forklifts idle speed is off, it might be the injection pump. Try adjusting the idle set screw to fix it.
What to do if the idle up speed does not rise on Toyota 8FGU15 Forklifts?
If the idle up speed on your Toyota Forklifts isn't increasing, the problem might be with the injection pump. Addressing this involves servicing the injection pump, which may include applying grease, etc.
How to fix the idle switch open error on Toyota 8FGU15?
If you're getting an idle switch open error on your Toyota Forklifts, it might be related to the injection pump. Replacing the return spring might solve the problem.
General| Model | 8FGU15 |
|---|---|
| Category | Forklifts |
| Engine Type | Internal Combustion |
| Load Capacity | 3000 lbs |
| Lift Height | 189 inches |
| Tire Type | Pneumatic |
| Engine | Toyota 4Y |
| Power Source | Gasoline |
Details on general vehicle specifications, including engine model, type, cycle, cylinder arrangement, and combustion chamber.
Illustrations showing the external view of the 4Y and 1DZ-II engines.
Cross-sectional diagrams illustrating the internal components and layout of the engine.
Guidance on how to effectively use the repair manual, including explanation methods.
Definitions of key terms and warnings, cautions, and notes used throughout the manual.
A list of abbreviations used in the manual with their corresponding original words and meanings.
Important advice for safe and tactful operation, including safe operation and troubleshooting tips.
Procedures and precautions for inspecting electrical parts and handling electronic components.
Guidance on standard bolt and nut tightening torques, including identification of bolt strength class.
Information on the use and reuse of precoated bolts with seal lock agent on threads.
List of lifting angles for wire rope suspension, including tension and compression values.
Table listing the weight of major vehicle components for different models.
Details on recommended lubricants, their quantities, and types for various vehicle systems.
A chart illustrating lubrication points and inspection intervals for the standard model.
Schedule and methods for periodic maintenance tasks for various vehicle systems.
Inspection and maintenance for the forks, including stopper pin and fingers.
Procedures for inspecting and maintaining the mast and lift bracket components.
Inspection and maintenance for the chain, chain wheel, and related parts.
Inspection and maintenance for various attachments used on the material handling system.
Details on the hydraulic system, including cylinder, oil pump, and related components.
Inspection and adjustment procedures for ignition timing components.
Inspection and troubleshooting for the starting motor system.
Inspection procedures for the charging system components.
Inspection, removal, and installation procedures for the battery.
Inspection of electrical wiring for damage and proper connections.
Inspection of fuses for continuity and proper function.
Inspection procedures for the preheater system components.
Inspection of the engine stopping system, including the key stop device.
Inspection of various safety devices including head guard, back-rest, and lighting system.
Illustrations showing the exterior views of the 4Y and 1DZ-II engines.
Key specifications and parameters for Gasoline and Diesel engines.
Graphs showing engine performance characteristics like torque, output, and fuel consumption.
Details on engine assembly, including removal and installation procedures.
Procedure for bleeding air from the fuel system, specifically for 1DZ-II engine vehicles.
Procedures for inspecting and adjusting engine parameters like idle speed and ignition timing.
Specifications, components, and cleaning/inspection procedures for the air cleaner.
Components, specifications, coolant capacity, and inspection procedures for the radiator system.
Component diagrams and removal/installation procedures for the muffler and exhaust system.
Components, specifications, and inspection procedures for the battery.
Procedure for inspecting and adjusting V-belt tension for 4Y and 1DZ-II engines.
Component details and inspection/adjustment procedures for the accelerator pedal.
Components and removal/installation procedures for the optional travel and load handling control device.
Procedures for adjusting the throttle opening degree for idle and NMR switches.
Guidance for troubleshooting mechanical and electrical issues in the travel and load handling control device.
Detailed specifications for the 4Y-M and 4Y-E engines, including dimensions and performance data.
Illustrations of the exterior views of the 4Y-M engine.
Cross-sectional diagrams of the engine showing internal components.
Guidance on interpreting the manual's structure and explanation methods.
Definitions of warnings, cautions, notes, standards, and limits used in the manual.
A list of abbreviations used in the 4Y-E Repair manual with their meanings.
Guidelines for safe operation, preparation for disassembly, and preventing foreign body entry.
Procedures for inspecting electrical parts, including circuit testers and polarity differences.
Information on standard bolt and nut tightening torques and identification methods.
Guidelines for using, reusing, and applying seal lock agent to precoated bolts.
Explanation of SI units and new units adopted for technical communication.
Instructions for applying and handling FIPG (liquid gasket) during reassembly.
Classification of engine malfunctions into three main elements: air-fuel mixture, compression, and ignition.
Troubleshooting steps for symptoms where the starter motor does not respond or makes abnormal noise.
Troubleshooting steps for ignition, fuel, and compression related starting issues.
Troubleshooting for engine roughness or stalling during idling, including carburetor and plug checks.
Troubleshooting steps for acceleration issues, focusing on fuel, ignition, and compression systems.
Diagnosis for insufficient engine power or hunting, covering ignition, fuel, compression, and drivetrain.
Troubleshooting steps for engine overheating, focusing on cooling, ignition, and compression systems.
Diagnosis of high fuel consumption by checking engine structure, maintenance, and operating conditions.
Classification and troubleshooting of abnormal engine noises like knocking, run-on, after-fire, and backfire.
Detailed breakdown of engine noises based on operation type, probable cause, and sound examples.
Classification of oil consumption symptoms like oil loss via piston ring or valve guide.
List of Special Service Tools (SSTs) required for engine overhaul procedures.
Component diagrams and removal/inspection/installation procedures for engine accessories.
Component parts and disassembly/inspection/reassembly procedures for the cylinder head.
Component parts and disassembly/inspection/reassembly procedures for the timing gear system.
Component parts and disassembly/inspection/reassembly procedures for the cylinder block.
Procedures for engine tune-up, including V-belt, valve clearance, and ignition timing adjustments.
List of Special Service Tools (SSTs) required for engine overhaul.
Component diagrams and removal/inspection/installation procedures for engine attachments.
Component parts and disassembly/inspection/reassembly procedures for the cylinder head.
Component parts and disassembly/inspection/reassembly procedures for the timing gear system.
Component parts and disassembly/inspection/reassembly procedures for the cylinder block.
Procedures for engine adjustment, including V-belt tension, idle speed, and ignition timing.
List of Special Service Tools (SSTs) for the fuel system.
Component parts and removal/inspection/installation procedures for the fuel pump.
Schematic diagram, components, inspection, and adjustment procedures for the carburetor.
Component parts and removal/installation, disassembly, inspection, reassembly, and adjustment.
Component parts and removal/inspection/installation procedures for the fuel injectors.
Inspection and standard values for the fuel pressure regulator.
Components, removal, inspection, and installation procedures for the ventilation valve.
Component parts and removal/inspection/installation and disassembly procedures for the water pump.
Procedures for removal, installation, and inspection of the water temperature sensor.
List of Special Service Tools (SSTs) for the lubrication system.
Procedures for inspecting engine oil level and measuring oil pressure.
Steps for draining engine oil, removing/installing the oil filter, and refilling oil.
Component parts and removal/inspection/installation procedures for the oil pump and strainer.
Wiring diagram for the ignition system.
Inspection procedures for spark plugs, including cleaning and gap measurement.
Component parts, on-vehicle inspection, removal/installation, and disassembly procedures for the distributor.
Inspection procedures for spark plugs, including cleaning and gap measurement.
Component parts, on-vehicle inspection, removal, and installation procedures for the distributor.
General information and removal/inspection/installation procedures for the igniter.
List of Special Service Tools (SSTs) used for the starting system.
Component parts, removal/inspection/installation, and disassembly procedures for the starter motor.
List of Special Service Tools (SSTs) for the charging system.
Procedures for on-vehicle inspection of charging system components.
Electrical circuit diagram and components of the alternator.
Procedures for disassembling, inspecting, and reassembling the alternator.
A comprehensive list of Special Service Tools (SSTs) with part numbers and applicable sections.
Technical specifications and standard values for engine overhaul components.
Schematic diagrams illustrating the vehicle's wiring system.
Technical specifications for the 1DZ-II engine, including dimensions and performance data.
Illustrations showing the exterior views of the 1DZ-II engine.
Cross-sectional diagrams illustrating the internal components of the 1DZ-II engine.
Guidance on interpreting the manual's structure and explanation methods.
Definitions of warnings, cautions, notes, standards, and limits used in the manual.
A list of abbreviations used in the 1DZ-II Repair manual with their meanings.
Guidelines for safe operation and preparation before disassembly.
Procedures for inspecting electric parts, including circuit testers and polarity differences.
Information on standard bolt and nut tightening torques.
Method for identifying bolt strength type and determining tightening torque.
Tightening torque table for hexagon flange bolts based on strength class and nominal diameter.
Guidelines for using and reusing precoat bolts with seal lock agent.
Explanation of SI units and their adoption in the manual for smoother technical communication.
Instructions for handling and applying FIPG (liquid gasket) during reassembly.
Classification of engine malfunctions based on three diesel engine elements: fuel injection, compression, preheating.
Troubleshooting steps for symptoms where the starter motor does not respond or makes unusual sounds.
Troubleshooting for starting issues related to preheating, injection, and compression.
Troubleshooting for engine malfunctions or stalling during idling.
Troubleshooting steps for poor acceleration or hesitation.
Troubleshooting for insufficient engine power or hunting.
Troubleshooting steps for engine overheating issues.
Diagnosis for high fuel consumption, including causes and areas for inspection.
Troubleshooting for frequent diesel knocking issues.
Troubleshooting for excessive black or white exhaust smoke.
Classification and troubleshooting of unusual engine sounds and noises.
Classification of oil consumption symptoms and troubleshooting steps.
List of Special Service Tools (SSTs) for engine overhaul.
Component diagrams and removal/inspection/installation procedures for engine accessories.
Component parts and disassembly/inspection/reassembly procedures for the cylinder head.
Component parts and disassembly/inspection/reassembly procedures for the timing gear system.
Component parts and disassembly/inspection/reassembly procedures for the cylinder block.
Procedures for disassembling, inspecting, and reassembling engine components.
List of Special Service Tools (SSTs) for the fuel system.
Component parts and removal/installation procedures for the fuel filter.
Component parts and removal/inspection/installation procedures for the injection nozzle.
Specifications, components, and removal/installation procedures for the injection pump.
Component parts and removal/installation, disassembly procedures for the water pump.
List of Special Service Tools (SSTs) for the lubrication system.
Procedures for inspecting engine oil level and measuring oil pressure.
Steps for draining engine oil, removing/installing the oil filter, and refilling oil.
Component parts and disassembly/inspection/reassembly procedures for the oil pump.
List of Special Service Tools (SSTs) for the starting system.
Electric circuit diagram and components of the preheating system.
Procedures for inspecting glow plugs for continuity.
Measurement of glow indicator lamp lit time and preheating timer voltage.
Measurement of resistance values for the water temperature sensor at different temperatures.
Component parts, removal/inspection/installation, and disassembly procedures for the starter motor.
List of Special Service Tools (SSTs) for the charging system.
Procedures for on-vehicle inspection of the charging system.
Electrical circuit diagram and components of the alternator.
Procedures for disassembling, inspecting, and reassembling the alternator.
A list of Special Service Tools (SSTs) with part numbers and applicable sections.
Service standards for engine overhaul components like cylinder head, valve guide bushing, and valve.
Electrical wiring diagrams for the vehicle's systems.
General information about LPG devices, including types, engine performance, and specifications.
Graphs showing engine performance curves for 4Y engines under gasoline and LPG operation.
Detailed specifications for 4Y engines, covering maximum torque, output, and fuel consumption.
Comparison of key differences between LPG and gasoline vehicle systems.
List of abbreviations used in the LPG Device manual with their meanings.
Guidelines for preparation, inspection during disassembly, and installation procedures.
Information on bolt strength identification and tightening torques for various bolt types.
Guidelines for the use and reuse of precoated bolts.
Schedule for periodic maintenance tasks including inspection and replacement parts.
Overview of the LPG system, detailing the flow of LPG from cylinder to engine.
Description of the LPG fuel filter, its construction, and filtering performance.
Explanation of the solenoid valve's function in controlling LPG flow based on engine condition.
Details on the adapter's function in mixing air with LPG and controlling fuel amount via FCM.
Function of the regulator in reducing LPG pressure and gasifying it for engine supply.
Specifications for the regulator, including pressure, seat dimensions, and flow shut-off method.
Circuit diagram and components of the LPG cutoff device integrated with the regulator.
Safety precautions for handling LPG, including fire prevention and leak detection.
General diagrams illustrating the regulator assembly.
Component parts and removal/installation procedures for the regulator assembly.
Procedures for disassembling and reassembling the regulator, including component checks.
Steps for checking LPG system for leaks using soapy water.
Procedures for adjusting engine parameters like ignition timing and VF voltage.
Precautions for connector handling and wire harness inspection.
Diagnostic procedures and general items to check before troubleshooting.
Explanation of the diagnosis system, error codes, and how to interpret flow charts.
A table listing diagnosis codes, memory, spanner, detection, error mode, and phenomenon.
Troubleshooting guide organized by common symptoms and corresponding page references.
