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Home / Caterpillar / Caterpillar Service Manual PDF
Caterpillar NR12N3L to NR20N3HX Service Manual SM24GBUN01C4
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Caterpillar NR12N3L to NR20N3HX Service Manual SM24GBUN01C4

$50.00

  • Type Of Manual: Service Manual
  • Manual ID: SM24GBUN01C4
  • Number of Pages: 266
  • Size: 9.8MB
  • Format: PDF
Category: Caterpillar Service Manual PDF
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  • Model List:

    • NR12N3L, NR14N3L, NR14N3C, NR16N3, NR20N3, NR16N3H, NR20N3H, NR25N3H, NR20N3HX
  • 1. GENERAL INFORMATION AND TECHNICAL DATA
  • 1.1. Introduction
  • 1.1.1. General
  • 1.1.2. The trucks
  • 1.1.3. Genuine Parts
  • 1.1.4. Authorised service personnel
  • 1.1.5. Symbol key
  • 1.2. Safety
  • 1.2.1. General
  • 1.2.2. Safety instructions
  • 1.2.3. Truck modification
  • 1.2.4. Lifting the truck
  • 1.2.5. Welding on truck
  • 1.3. Environmental considerations
  • 1.3.1. We respect the environment
  • 1.4. Preparations
  • 1.4.1. Service
  • 1.4.2. Troubleshooting
  • 1.5. Truck data
  • 1.5.1. Machine plates
  • 1.5.2. Safety and warning signs
  • 1.5.3. Explanation of symbols
  • 1.5.4. Type designation
  • 1.5.5. Truck types
  • 1.5.6. Dimensions
  • 1.6. Component specification
  • 1.6.1. Drive motor
  • 1.6.2. Electric brake
  • 1.6.3. Gearbox
  • 1.6.4. Hydraulic unit
  • 1.6.5. Control system for traction and pump motors
  • 1.6.6. Steering servo motor
  • 1.6.7. Controller system for steering
  • 1.7. Recommended consumable materials
  • 1.7.1. Oil and grease types
  • 1.8. Code explanations
  • 1.8.1. Colour codes for wiring diagrams
  • 1.8.2. Designations for electrical components in electrical diagram
  • 1.8.3. Standard abbreviations and units
  • 1.8.4. Acronyms and abbreviations
  • 2. SPECIAL TOOLS
  • 2.1. List of tools
  • 3. SERVICE
  • 3.1. Pre-delivery Inspection (PDI)
  • 3.2. Service schedule / inspection
  • 3.2.1. Introduction
  • 3.2.2. Safety
  • 3.2.3. Service schedule explanation
  • 3.2.4. Inspection daily / monthly / PDI and commissioning
  • 3.2.5. First service (200 hours)
  • 3.2.6. Main service
  • 3.2.7. Extra service inspections
  • 3.2.8. Service inspection
  • 3.2.9. Dye penetration inspection instruction
  • 3.3. Service schedule
  • 3.4. Lubrication
  • 3.4.1. Recommended lubricants
  • 3.4.2. Symbol key lubrication chart
  • 3.4.3. Lubrication chart – narrow reach truck, reach truck
  • 3.4.4. Cab lubrication schematic diagram (option)
  • 4. CHASSIS
  • 4.1. Design and function
  • 4.1.1. Chassis frame
  • 4.1.2. Machine housing
  • 4.1.3. Overhead guard
  • 4.1.4. Battery locking
  • 4.1.5. Armrest and steering wheel
  • 4.1.6. Foot plate
  • 4.1.7. Covers and panels
  • 4.1.8. Tightening torque for chassis plates
  • 4.2. Repair and maintenance instructions
  • 4.2.1. Panels
  • 4.2.2. Load wheels
  • 4.2.3. Machine housing
  • 4.2.4. Adjusting the stabilising lugs – NR16-25N3H(X)
  • 4.2.5. Driver seat
  • 4.2.6. Overhead guard
  • 4.2.7. Batteries
  • 4.2.8. Battery rollers
  • 4.2.9. Adjustable armrest
  • 4.2.10. Fitting the antistatic chain
  • 5. DRIVE UNIT
  • 5.1. Design and function
  • 5.1.1. Drive motor
  • 5.1.2. Gearbox
  • 5.2. Repair and maintenance instructions
  • 5.2.1. Before work is performed
  • 5.2.2. Drive unit
  • 5.2.3. Traction motor
  • 5.2.4. Removal and installation of the traction motor
  • 5.2.5. First service
  • 5.2.6. Preventive maintenance
  • 5.2.7. Reconditioning the traction motor
  • 5.2.8. Gearbox
  • 5.2.9. Drive wheel
  • 5.3. Diagnostics and troubleshooting
  • 5.3.1. Troubleshooting chart
  • 6. MAST SYSTEM
  • 6.1. Design and function
  • 6.1.1. Mast system
  • 6.1.2. Fork carriage
  • 6.2. Repair and maintenance instructions
  • 6.2.1. Lift chains
  • 6.2.2. Reach carriage
  • 6.2.3. Fork carriage
  • 6.2.4. Side shift unit of hanging type
  • 6.2.5. Integrated side shift unit (ISS)
  • 6.2.6. Integral Fork positioner/sideshift, NR12-14N3(L)(C), NR16-20N3, NR16N3H, NR20N3H
  • 6.2.7. Integral Fork positioner/sideshift (NR25N3H)
  • 6.3. Diagnostics and troubleshooting
  • 6.3.1. Troubleshooting chart, triplex with free lift (DTFV) and duplex (T)
  • 6.3.2. Troubleshooting chart for the integrated side shift unit (ISS), triplex with free lift (DTFV)
  • 6.3.3. Troubleshooting chart for the integral fork positioner/sideshift, triplex with free lift (DTFV)
  • 7. STEERING
  • 7.1. Design and function
  • 7.1.1. General
  • 7.1.2. Feedback sensors
  • 7.1.3. Communication between the servo components
  • 7.2. Repair and maintenance instructions
  • 7.2.1. Steering wheel
  • 7.2.2. Steering servo motor
  • 7.2.3. Settings, adjustments and testing
  • 7.2.4. Remove and install the zero position sensor
  • 7.2.5. Options
  • 7.3. Diagnostics and troubleshooting
  • 7.3.1. Troubleshooting with TruckTool
  • 8. HYDRAULIC SYSTEM
  • 8.1. Design and function
  • 8.1.1. Description
  • 8.1.2. Hose rupture valve
  • 8.1.3. Electric proportional valve
  • 8.1.4. Electric solenoid valve
  • 8.1.5. MTC (Mast Tilt Control)
  • 8.1.6. Hydraulic diagram
  • 8.2. Repair and maintenance instructions
  • 8.2.1. Before work is performed
  • 8.2.2. General instructions
  • 8.2.3. Installation
  • 8.2.4. Connections
  • 8.2.5. Dismantling and assembling hydraulic hoses
  • 8.2.6. Pump motor
  • 8.2.7. Hydraulic oil tank
  • 8.2.8. MTC (Mast Tilt Control)
  • 8.3. Control valve
  • 8.3.1. Operation of the control valve
  • 8.3.2. Control valve overview
  • 8.3.3. Removal and installation of the control valve
  • 8.3.4. Adjusting the working pressure
  • 8.3.5. Inspection and adjustment of the lowering rate
  • 8.3.6. Calibrating the hydraulic functions
  • 8.3.7. S3 valve
  • 8.3.8. Emergency lowering valve
  • 8.3.9. Hose rupture valve
  • 8.4. Diagnostics and troubleshooting
  • 8.4.1. Troubleshooting the hydraulic system
  • 8.4.2. Troubleshooting chart
  • 8.4.3. Troubleshooting the control valve
  • 9. HYDRAULIC CYLINDERS
  • 9.1. Design and function
  • 9.1.1. Reach cylinder
  • 9.1.2. Tilt cylinder
  • 9.1.3. Free lift cylinder
  • 9.1.4. Final stroke cylinder
  • 9.2. Repair and maintenance instructions
  • 9.2.1. General
  • 9.2.2. Reach cylinder
  • 9.2.3. Tilt cylinder
  • 9.2.4. Free lift cylinder
  • 9.2.5. Final stroke cylinder
  • 9.2.6. Removal and installation of the gasket in the hydraulic cylinder
  • 10. ELECTRICAL SYSTEM
  • 10.1. Introduction
  • 10.1.1. Overview of components
  • 10.1.2. CAN bus communication
  • 10.2. Safety
  • 10.2.1. Safety instructions
  • 10.2.2. Electronic controllers
  • 10.2.3. Traction system
  • 10.2.4. Hydraulic system
  • 10.2.5. Sensors
  • 10.2.6. Maximum drive speed and drive stop
  • 10.3. Design and function
  • 10.3.1. Battery
  • 10.3.2. Battery capacity measurement (lead-acid)
  • 10.3.3. Battery parameters
  • 10.3.4. Display
  • 10.3.5. VCM (Vehicle Control Module) (truck computer)
  • 10.3.6. TMC (Traction Motor Controller)
  • 10.3.7. PMC (Pump Motor Controller)
  • 10.3.8. EPS (Electrical Power Steering) controller
  • 10.3.9. Connector specifications
  • 10.4. Repair and maintenance instructions
  • 10.4.1. Wiring diagram
  • 10.4.2. Preventive maintenance
  • 10.4.3. Remove and install the multi function display (HMI-20)
  • 10.4.4. Remove and install the horn
  • 10.4.5. Remove and install the emergency stop
  • 10.4.6. Remove and install the direction selector button (option)
  • 10.4.7. Remove and install the DC/DC converter (option)
  • 10.4.8. Ergologic unit
  • 10.4.9. Remove and install the electrical components
  • 10.4.10. Traction and pump regulation
  • 10.4.11. Insulation resistance
  • 10.4.12. Temperature measurement and management
  • 10.4.13. System for detecting the reach carriage position
  • 10.4.14. Electrical monitoring of battery locking
  • 10.4.15. Maintaining and changing the battery (Lead Acid)
  • 10.4.16. TruckTool
  • 10.5. Diagnostics and troubleshooting
  • 10.5.1. General instructions for all types of faults in combination with a loss of voltage
  • 10.5.2. Troubleshooting – operational disturbances
  • 10.5.3. Troubleshooting table – battery
  • 11. SPEED CONTROL AND BRAKE SYSTEMS
  • 11.1. Design and function
  • 11.1.1. Electric brake
  • 11.1.2. Speed and brake sensor
  • 11.2. Repair and maintenance instructions
  • 11.2.1. Electric brakes
  • 11.2.2. Brake Pedal Assembly
  • 11.2.3. Left-foot switch
  • 11.2.4. Speed Controller
  • 11.3. Diagnostics and troubleshooting
  • 12. MISCELLANEOUS
  • 12.1. Options
  • 12.1.1. General
  • 12.1.2. Service indication
  • 12.1.3. Trucks equipped with restart
  • 12.1.4. Side shift and tilt centring
  • 12.1.5. Speed reduction
  • 12.1.6. Automatic logging off
  • 12.1.7. Buzzer when the battery voltage is low
  • 12.1.8. Hand-controlled direction selector
  • 12.1.9. Cold storage cab
  • 12.1.10. Battery on motor-powered rollers
  • 12.1.11. Electrically heated drivers seat (option)
  • 12.2. Level selector and height indication
  • 12.2.1. Pulse height preset
  • 12.2.2. Level Assistance System, LAS
  • 12.2.3. Height indication on the display
  • 12.2.4. Checking the fork offset
  • 12.3. Stability Support System, S3-1
  • 12.3.1. Identification
  • 12.3.2. Functionality, S3-1
  • 12.3.3. Drive Speed
  • 12.3.4. Hydraulic functions
  • 12.3.5. Technical description
  • 12.4. Weight system
  • 12.4.1. Introduction
  • 12.4.2. Enable options
  • 12.4.3. Accompanying hardware
  • 12.4.4. Premises and requirements
  • 12.4.5. Calibration of the weight system
  • 12.4.6. Weight indication
  • 12.5. Load wheel covers
  • 12.5.1. Installation of load wheel covers
  • 12.6. Delivery mode
  • 12.6.1. Driving in delivery mode and platform mode
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