McCormick GX40 GX45 GX50 Repair Manual

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Description

Factory Service Repair Manual For McCormick GX40 GX45 GX50 Tractors.

Detailed Step by Step Instructions, diagrams, illustrations, specifications for repair, overhaul, disassembly and assembly, testing, adjustment, replacement, change, and much more for service and repair McCormick Tractor.

= Printable,
= Zoom able,
= Bookmarks,
= Searchable Text

MODELS Covered

McCormick GX40

McCormick GX45

McCormick GX50

SECTIONS covered

* General Information
* Engine
* Clutch
* Gearbox
* Transmission
* Power Take Off
* Hydraulic System
* Steering System
* Brakes
* Electrical System
* Maintenance
* Technical Information
* Technical Specifications

  • General Information
    SAFETY NOTES
    Personal risk
    Avoid accidents
    General rules
    Starting
    Engine
    Electrical systems
    Hydraulic circuits
    Wheels and tyres
    Splitting and remounting parts
    GENERAL INSTRUCTIONS
    Battery
    Adjuster shims
    Spinning shaft seals
    “O-ring” seals
    Bearings
    Spring pins
    Notes about spare parts
    Specific equipment
    SYMBOLS
    Meaning and use
    DANGER SIGNS
    Positions of the danger decals – WEO markets
    Positions of the danger decals – NAO markets
    SEALING AND FIXING SEALANTS
    LUBRICANTS AND FUELS
    CONVENTIONAL UNITS OF MEASUREMENT
    Units of measurement (international system)
    Conversion values for Imperial measurement system
    STANDARD DRIVING TORQUE VALUES
    Screws with metric threads
    Nuts with metric threads
  • Engine
    GENERAL FEATURES
    MAIN SPECIFICATIONS
    DRIVING TORQUES
    SPECIFIC EQUIPMENT
    SECTIONS
    LUBRICATION, COOLING AND FUELLING CIRCUIT DIAGRAMS
    ENGINE TROUBLESHOOTING
    ENGINE SPLITTING AND REMOUNTING
    Splitting
    Remounting
    COMPRESSION TEST
    Compression degree
    Measuring procedure
    ENGINE – OVERHAUL
    Demounting
    Assembly of tappets and drive shaft with main bearing caps, bearings and bearing rings
    Assembly of pistons complete with piston rings, pins, connecting rods, caps and bearings
    Assembly of timing, lubrication, starting, recharging, cooling and fuelling components
    Valve play adjustment
    How to check the belt tension
    INJECTOR NOZZLE AND INJECTION PRESSURE MEASURING AND MONITORING
    Injection pressure measurement
    Jet inspection
    Atomizer valve sliding test
    Identification number of the atomizer casing
    INJECTION TIMING ADJUSTMENT AND MONITORING
    IDLING RATE ADJUSTMENT (MINIMUM AND MAXIMUM)
    HOW TO CHECK THE COOLING SYSTEM AND RADIATOR TO FIND LEAKS
    SENSOR INSPECTION
    Thermostat
    Thermal switch
    Hydraulic switch
    CYLINDER HEAD INSPECTIONS, MEASUREMENTS AND REPAIRS
    Warping and inspection of the combustion surfaces
    Valve impression
    Valve housing width and angle
    Valve housing intervention procedure
    Grinding and milling tool use procedure
    Valve housing removal
    Valve housing insertion
    Valve stem wear and warping
    Valve stem and valve guide
    Valve head thickness
    Valve guide replacement
    Valve stem seal
    Valve spring inspection
    Spring cap and cotter inspection
    CRANKCASE AND CYLINDER LINER INSPECTIONS, MEASUREMENTS AND REPAIRS
    Crankcase inspection
    Measurement of cylinder liner bore and warping
    Lapping
    ROCKER ARM INSPECTIONS, MEASUREMENTS AND REPAIRS !
    Measurement of the outer diameter of the rocker arm pin and inner diameter of the rocker arrr
    Tappet rod curve inspection, measurement of the outer diameter of the tappets and inspection of the contacting surfaces ;
    Other inspections ;
    PISTON AND PISTON RING INSPECTIONS, MEASUREMENTS AND REPAIRSI
    Piston inspection;
    Measurement of the outer piston diameter ;
    Shape of the piston rings;
    Measurement of the groove width of the piston ring, the piston ring and the distance
    between ends
    Piston ring assembly
    Measurement of the outer diameter of the pin and relative hole
    CONNECTION ROD INSPECTIONS, MEASUREMENTS AND REPAIRS
    Visual inspection
    Twist and parallelism measurement
    Measurement of the bush and connecting rod pin play
    Measure the play between the pin bush and the pin itself
    Checking the connecting rod pin bearing contact
    Mounting the piston and connecting rod
    Connecting rod side play
    CAMSHAFT INSPECTIONS, MEASUREMENTS AND REPAIRS
    Camshaft float
    Visual inspection of the camshaft
    Camshaft incurvation measurement
    Intake/exhaust cam height measurement
    Measurement of the play between the camshaft pins
    and their relative bushes:
    DRIVE SHAFT INSPECTIONS, MEASUREMENTS AND REPAIRS
    Drive shaft float
    Checking the colour of the drive shaft
    Bearing inspection
    Drive shaft incurvation
    Measurement of the connecting rod pin and main bearing
    Precautions for bearing assembly
    GEAR INSPECTIONS, MEASUREMENTS AND REPAIRS
    Checking and measuring the intermediate gear shaft and the gear itself
    Gear train
    OIL PUMP INSPECTIONS, MEASUREMENTS AND REPAIRS
    Play between the external rotor and pump casing
    Play between inner and outer rotor
    Float between the pump casing and the inner and outer rotor
    Play between the rotor shaft and housing hole
    Miscellaneous
    YANMAR INJECTION PUMP
    How to bleed air from the fuel circuit
    INJECTION PUMP – OVERHAUL
    Demounting
    Assembly
    Plunger inspection
    Delivery valve inspection
    Plunger guide, plunger cylinder inspection
    Camshaft and bearing inspection
    Fuel regulating pinion and rack inspection
    REGULATOR UNIT – OVERHAUL
    Demounting
    Assembly
    Checking the centrifugal weights of the regulator
    Regulator sleeve inspection
    Regulator lever shaft assembly inspection
    Spring inspection
    Checking the torque adjuster spring assembly
    Checking the torsion spring assembly
  • Clutch
    GENERAL SPECIFICATIONS OF THE LX 9″/9″ CLUTCH
    DRIVING TORQUE VALUES
    SPECIFIC EQUIPMENT
    SECTIONS
    TROUBLESHOOTING FOR THE CLUTCH ASSEMBLY
    WHERE THE SEALANT IS APPLIED FOR THE CLUTCH HOUSING ON THE TRANSMISSION HOUSING
    CLUTCH SPLITTING-REMOUNTING
    Splitting
    Remounting
    CONTROL ADJUSTMENT
    GEARSHIFT CLUTCH
    CONTROL ADJUSTMENT
    POWER TAKE-OFF CLUTCH
  • Gearbox
    MAIN SPECIFICATIONS OF THE GEARBOX AND FINAL DRIVE
    MAIN SPECIFICATIONS OF REVERSE SHUTTLE
    MAIN SPECIFICATIONS OF THE SUPPLEMENTARY FINAL DRIVE (16+16 VERSION)____
    DRIVING TORQUE VALUES
    SECTIONS
    DESCRIPTION AND OPERATION
    Gearbox and reverse shuttle
    Supplementary final drive (16 + 16 version)
    TROUBLESHOOTING FOR THE GEARBOX, FINAL DRIVE AND REVERSE SHUTTLE
    TROUBLESHOOTING FOR THE SUPPLEMENTARY FINAL DRIVE (16-16 VERSION)
    WHERE THE SEALANT IS APPLIED FOR THE GEARBOX-REAR TRANSMISSION HOUSING
    GEARBOX TRANSMISSION HOUSING SPLITTING-REMOUNTING
    Splitting
    Remounting
    GEARBOX TRANSMISSION HOUSING – OVERHAUL
    Demounting
    Assembly
    Main shaft float adjustment
    Reverse shuttle gear float adjustment
    CLUTCH HOUSING – OVERHAUL
    Demounting
    Assembly
  • Rear Differential Axle
    MAIN SPECIFICATIONS OF THE BEVEL GEAR PAIR AND DIFFERENTIAL
    DRIVING TORQUE VALUES
    SECTIONS
    DESCRIPTION AND OPERATION
    TROUBLESHOOTING FOR THE BEVEL GEAR PAIR AND DIFFERENTIAL
    TROUBLESHOOTING FOR THE SIDE FINAL DRIVES
    WHERE THE SEALANT IS APPLIED FOR THE GEARBOX-REAR TRANSMISSION HOUSING
    REAR TRANSMISSION HOUSING – OVERHAUL
    Demounting
    Assembly
    RIGHT OR LEFT SIDE FINAL DRIVE HOUSING-ASSEMBLY SPLITTING REMOUNTING
    Splitting
    Remounting
    DRIVING WHEEL SHAFT – OVERHAUL
    Demounting
    Assembly
    BEVEL GEAR PAIR ADJUSTMENT
  • Front Axle
    MAIN SPECIFICATIONS
    DRIVING TORQUE VALUES
    SPECIFIC EQUIPMENT
    SECTIONS
    DESCRIPTION AND OPERATION
    Axle assembly
    Differential lock
    TROUBLESHOOTING FOR THE FRONT AXLE DIFF LOCK DEVICE
    FRONT AXLE
    Splitting
    Remounting
    FRONT AXLE DIFFERENTIAL AND BEVEL GEAR PAIR SUPPORT
    Splitting
    Remounting
    FRONT BEVEL GEAR PAIR – OVERHAUL
    Demounting
    Bevel pinion bearing preload
    Adjustment of the axial position of the bevel pinion
    Pinion – ring gear play adjustment
    Ring gear bearing float adjustment
    FRONT DIFF LOCK – OVERHAUL
    Demounting
    Assembly
    WHEEL HUB – OVERHAUL
    Demounting
    Assembly
    FRONT FINAL DRIVE – SPLITTING REMOUNTING
    Splitting
    Remounting
    FRONT FINAL DRIVE – OVERHAUL
    Demounting
    Assembly
    AXLE STEERING CYLINDER – SPLITTING REMOUNTING
    Splitting
    Remounting
  • Power Take Off
    MAIN SPECIFICATIONS
    DRIVING TORQUE VALUES
    SECTIONS
    DESCRIPTION AND OPERATION
    Power take-off controlled directly by the main clutch
    Power take-off synchronized with the gearbox
    TROUBLESHOOTING FOR THE MECHANICALLY ENGAGED POWER TAKE-OFF
    WHERE THE SEALANT IS APPLIED ON THE POWER TAKE-OFF COVER
    MECHANICALLY ENGAGED POWER TAKE-OFF OVERHAUL
    Demounting
    Assembly
  • Hydraulic Circuits – Rear Power Lift
    MAIN SPECIFICATIONS – REAR HYDRAULIC POWER LIFT
    SPECIFIC EQUIPMENT
    SECTIONS AND PERSPECTIVE VIEWS
    DESCRIPTION OF THE OPERATING MODE OF THE HYDRAULIC POWER LIFT
    Position control
    Draft control
    Mixed position and draft control
    Floating position
    DESCRIPTION OF THE OPERATING MODE OF THE HYDRAULIC POWER LIFT’S VALVE SYSTEM
    Neutral phase
    Lifting phase
    Discharge phase
    POWER LIFT’S VALVE SYSTEM – OVERHAUL
    Demounting
    Assembly
    VALVE SYSTEM OF THE HYDRAULIC POWER LIFT – HYDRAULIC TESTS
    Check for leaks from the discharge valve
    Checking and adjusting the cylinder safety valve
    Non-return valve test
    Over-pressure valve setting test
    POWER LIFT – ADJUSTMENTS
    Sensitivity adjustment
    Draft control adjustment
    Position control adjustment
    HYDRAULIC POWER LIFT – OPERATING PRESSURE TEST
    Checking the valve pressure setting for the auxiliary control valves
  • Hydraulic Circuits – Auxiliary Control Valves
    MAIN SPECIFICATIONS – REAR HYDRAULIC POWER LIFT
    SPECIFIC EQUIPMENT
    SECTIONS AND PERSPECTIVE VIEWS
    DESCRIPTION OF THE OPERATING MODE OF THE HYDRAULIC POWER LIFT
    Position control
    Draft control
    Mixed position and draft control
    Floating position
    DESCRIPTION OF THE OPERATING MODE OF THE HYDRAULIC POWER LIFT’S VALVE SYSTEM
    Neutral phase
    Lifting phase
    Discharge phase
    POWER LIFT’S VALVE SYSTEM – OVERHAUL
    Demounting
    Assembly
    VALVE SYSTEM OF THE HYDRAULIC POWER LIFT – HYDRAULIC TESTS
    Check for leaks from the discharge valve
    Checking and adjusting the cylinder safety valve
    Non-return valve test
    Over-pressure valve setting test
    POWER LIFT – ADJUSTMENTS
    Sensitivity adjustment
    Draft control adjustment
    Position control adjustment
    HYDRAULIC POWER LIFT – OPERATING PRESSURE TEST
    Checking the valve pressure setting for the auxiliary control valves
  • Steering System
    MAIN SPECIFICATIONS
    SECTIONS AND EXPLODED VIEWS
    DESCRIPTION AND OPERATION
    Power steering circuit oil supply
    Differential locking and unlocking
    Reverse shuttle and gearbox lubrication
    OPERATING PRESSURE TESTS
    Steering circuit pressure test
    Checking the pressure setting of the utility pressure governor valve (18 bar)
  • Brakes
    MAIN SPECIFICATIONS
    DRIVING TORQUE VALUES
    SECTIONS
    DESCRIPTION AND OPERATION
    Main brakes
    Parking brake
    BRAKE SYSTEM TROUBLESHOOTING
    WHERE THE SEALANT IS APPLIED ON THE BRAKE ASSEMBLY AND SIDE FINAL DRIVES ON THE
    TRANSMISSION HOUSING
    RIGHT OR LEFT BRAKE SPLITTING-REMOUNTING
    Splitting
    Remounting
    ADJUSTMENTS
    Adjustment of the right and left brakes
    Parking brake hand lever travel adjustment
  • Electrical System – Instruments
    INSTRUMENTS
    Warning light identification
    Instrument panel
    Wiring diagram of indicator light panel interior
    Indicator lights
    RPM meter and hour counter
    Fuel level gauge
    Engine coolant temperature indicator
    TRANSMITTERS, SENSORS AND SWITCHES
    MAINTENANCE
    Warning light replacement
  • Electrical System – Components
    CONTROL PANEL WITH ANALOGUE INSTRUMENT
    LIGHT SWITCH
    Turn indicators
    Driving beam blinking function
    Side lights
    Driving/dipped beams
    Horn
    HAZARD LIGHT SWITCH
    ROTATING BEAM SWITCH
    IGNITION SWITCH
    CONTROLS ON THE RIGHT-HAND SIDE
    DIFF LOCK CONTROL BUTTON
    CONTROLS ON THE LEFT-HAND SIDE
    MAINTENANCE
    Headlight bulbs Replacement
    Bulbs in front side lights and turn indicators Replacement
    Rear field light bulb Replacement
    Bulbs in rear side lights, brake lights and turn indicators Replacement
    License plate light bulb Replacement
  • Electrical System – Ignition System
    TECHNICAL SPECIFICATIONS
    DESCRIPTION AND OPERATION
    TROUBLESHOOTING
    TESTS
    Ignition system test on the tractor
    Power draw in the starter motor circuit
    Resistance in the ignition system circuit (voltage drop)
    Positive battery cable
    Ground connection of the starter motor
    Battery ground cable
    STARTER MOTOR SPLITTING-REMOUNTING
  • Electrical System – Recharging System
    TECHNICAL SPECIFICATIONS
    DESCRIPTION AND OPERATION
    Description of the alternator
    Alternator operation
    TESTS AND TROUBLESHOOTING
    Precautions to take during the operation
    Preliminary inspections
    Initial tests
    Alternator connection test
    Charge current and regulated voltage tests
    Alternator component tests
    ALTERNATOR SPLITTING-REMOUNTING
  • Electrical System – Battery
    TECHNICAL SPECIFICATIONS
    DESCRIPTION AND OPERATION
    Description of the alternator
    Alternator operation
    TESTS AND TROUBLESHOOTING
    Precautions to take during the operation
    Preliminary inspections
    Initial tests
    Alternator connection test
    Charge current and regulated voltage tests
    Alternator component tests
    ALTERNATOR SPLITTING-REMOUNTING