(S/N: 960001 to 985136 - S/N: 1327001 to 1349999) - This service manual PDF download for the 3CX, 4CX JCB Backhoe Loader has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to fully at every opportunity.
APPLICABLE MODELS :
JCB Backhoe Loader 3CX, 4CX (with JCB 444 Engine) S/N: 960001 to 985136 S/N: 1327001 to 1349999
TABLE OF CONTENTS :
Section 1 - General Information Section 2 - Care and Safety Section 3 - Maintenance Section A - Attachments Section B - Body and Framework Section C - Electrics Section D - Controls Section E - Hydraulics Section F - Transmission Section G - Brakes Section H - Steering Section K - Engine Section L - Servo Controls
MANUAL SPECIFICATION :
File Format : PDF Language : English Printable : Yes Searchable : Yes Bookmarked : Yes Publication No. : 9803/3290-16 Total Pages : 1912
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9803-3290
Section 1 General Information Introduction About this Publication Using the Service Manual Section Numbering Units of Measurement Left Side, Right Side Cab/Canopy Cross References Machine Nomenclature Identifying the Machine Machine Identification Plate Component Identification Plates Fuel Types of Fuel Torque Settings Zinc Plated Fasteners and Dacromet Fasteners Introduction Bolts and Screws Hydraulic Connections 'O' Ring Face Seal System 'Torque Stop' Hose System `Quick-Connect' Pilot Hoses Disconnecting Connecting Service Tools Numerical List Service Aids Sealing and Retaining Compounds Terms and Definitions Colour Coding Hydraulic Schematic Colour Codes
Section 2 Care and Safety Safety Notices Important Information The Operator Manual Safety Warnings Safety Check List Safety - Yours and Others General Safety Operating Safety Maintenance Safety Safety Labels Introduction Safety Label Identification
Section 3 Maintenance Routine Maintenance Health and Safety Lubricants Battery Service Schedules Introduction Fuel System How to Use the Service Schedules Calendar Equivalents Pre-start Cold Checks, Service Points and Fluid Levels Functional Test and Final Inspection Lubricants and Capacities Coolant Mixtures Prepare the Machine for Maintenance Introduction How to Make the Machine Safe (Loader Arms Lowered) How to Make the Machine Safe (Loader Arm Lifted) Cleaning the Machine Introduction Preparing the Machine for Cleaning Cleaning the Machine Checking for Damage Check the Machine Body and Structure Check the Tyres Check the Seat and Seat Belt Check the Hydraulic Hoses and Fittings ROPS/FOPS Structure Checking The ROPS/FOPS Structure Greasing Introduction Preparing the Machine for Greasing Loader Arms Backhoe and Quickhitch Front Axle (2 Wheel Drive Machines) Front Axle (4 Wheel Drive Machines) Front Axle (All Wheel Drive Machines) Rear Axle (All Wheel Drive Machines) Extending Dipper Driveshafts 6 - In - 1 Clamshovel Stabilisers (Centremount Machines) Loader Quickhitch Power Sideshift Kingpost Knuckle (if fitted) Backhoe Quickhitch (Hydraulic) Access Panels Engine Cover Front Grille Heater and Air Conditioning Cleaning the Cab Heater Fresh Air Filter Changing the Cab Heater Recirculation Filter(s) (if fitted) Brakes Park Brake Foot Brake Electrical System Battery Jump Starting The Engine Fuses Link Box Fuses Relay Identification Engine Oil and Filter Cooling System Front End Accessory Drive Belt Air Filter Fuel System Fuel Filling the Tank Water Separator and Engine Fuel Filter Bleeding the System Hydraulic System Introduction Releasing the Hydraulic Pressure Hydraulic Tank Filler Cap Oil and Filter Cooling Pack Hose Burst Protection Valve (if fitted) Checking Hose Burst Protection Valve Lowering a Load Transmission Checking the Gearbox Oil Level Changing the Oil and Filter Axles Front and Rear Axle (All Wheel Steer Machines) Front and Rear Axle (Two Wheel Steer Machines) Tyres and Wheels Tyre Inflation Wheel Nuts Wheel Alignment Introduction Electronic Steer Mode Selector Wear Pads Extradig Dipper Wear Pads Stabiliser Legs (Sideshift Machines Only) Windscreen Washer Checking the Level Fire Extinguisher (if fitted) Checking the Fire Extinguisher
Section A Attachments Hi-Flow Rockbreaker Circuit Operation Overview Gearpump Machines Gearpump Machines from September 2007 Variflow Machines Precision Control (Servo) Machines Connecting/Disconnecting Hydraulic Hoses Introduction Connecting the Hydraulic Hoses Disconnecting the Hydraulic Hoses Quick Release Couplings Changing the Return Line Filter - if fitted Hydraulic Tool Circuit (HTC) Operation Overview Gearpump Machines with Extending Dipper Electrical Connections NOT Servo Machines Precision Control (Servo) Machines Connecting/Disconnecting Hydraulic Hoses Introduction Connecting the Hydraulic Hoses Disconnecting the Hydraulic Hoses Quick Release Couplings Flow Diverter Valve Removal and Replacement Dismantle and Assemble Flow and Pressure Testing 3 Point Hitch (214e Landscaper) Removal and Replacement Control Valve Operating Rams
Section B Body and Framework Service Tools Numerical List Tool Detail Reference Rivet Nuts Fitting Procedure Slide Hammer Kit Fitting Procedure Cab Air Conditioning (3CX, 4CX) SYSTEM Related Topics Specifications R134a Refrigerant PAG Type Refrigerant Oil Operation Overview System Operation System Control Electrical Operation and Schematics Electrical Description Wires and Connectors Safety Procedures Service Checks Off-Season Operation Fault Finding Fault Indications System Diagnosis using Test Gauges Test Procedures Leak Testing Tightening Leaking Hoses Refrigerant Charge Level Binary Pressure Switch Refrigerant Refrigerant Charging and Discharging Cleaning the Cab Filter Compressor Drive Belt - Adjustment Cab Air Conditioning 3C-14 (214e), 3C SYSTEM Related Topics Specifications R134a Refrigerant PAG Type Refrigerant Oil Operation Overview Cab Introduction ROPS, FOPS Structure - Checks Removal and Replacement Direct Glazing Cab Mountings Side Console Front Steering Console B Post Covers Roof Lining Cab Roof Moulding Air Conditioning Condenser Introduction Cleaning Removal and Replacement Cab HVAC Unit (3CX, 4CX) Introduction Removal and Replacement Air Conditioning Unit (HVAC) Evaporator Matrix Binary Pressure Switch Blower Unit Freeze Protection Thermostat Cab HVAC Unit 3C-14 (214e), 3C Introduction Removal and Replacement Blower Motor Freeze Protection Thermostat Compressor Clutch Relay Heater Valve Introduction Removal and Replacement Cab Seat (Not Servo) Introduction Removal and Replacement Fuel Tank Introduction Removal and Replacement Fuel Level Sender Hydraulic Tank Introduction Removal and Replacement Fluid Level Sight Glass Filter Cover Plate Engine Cover Introduction Removal and Replacement Front Grille Housing Introduction Removal and Replacement Loader Arms Introduction Removal and Replacement Stabiliser Legs Introduction Sideshift Wear Pads Wear Pad - Adjustment Removal and Replacement Sideshift Centremount Stabiliser Leg Alarm SYSTEM Related Topics Operation Overview Electrical Operation and Schematics - Early Machines Electrical Description Wires and Connectors Electrical Operation and Schematics - Later Machines Electrical Description Wires and Connectors Leg Alarm Switch - Adjustment (Sideshift) Leg Alarm Switch - Adjustment (Centremount) Boom and Dipper Introduction Extending Dipper Wear Pad Adjustment Removal and Replacement Boom Dipper Overload Warning SYSTEM Related Topics Operation Overview Electrical Operation and Schematics Electrical Description Wires and Connectors - Early Machines Wires and Connectors - Later Machines Pressure Switch Renewal Kingpost & Carriage Introduction Sideshift Hydraclamp Clearance Setting Powered Sideshift Wear Pad Renewal Chain Adjustment Removal and Replacement Power Sideshift Ram Kingpost Sideshift Carriage
Section C Electrics Service Tools Numerical List Tool Detail Reference Technical Data General Electrical Data Fuses and Relays - 3CX & 4CX Machines Fuses - NOT Servo Machines Fuses - Joystick Controls (Servo) Machines Link Box Fuses Relays - NOT Servo (Early Machines) Relays - NOT Servo (Later Machines to May 2009) Relays - NOT Servo (From May 2009) Relays - Joystick Controls (Servo) Machines Relays - Gearbox/Steer Control Fuses and Relays - 3C-14 (214e) & 3C Machines Fuses Link Box Fuses Relays Schematic Circuits - To May 2009 (Analog Instruments) 3CX & 4CX Machines Gearbox Control Synchro Shuttle Gearbox Powershift Gearbox Shiftmaster Gearbox Options Engine Cold Start Heater Steer Mode (4x4x4) - PCB (Relay) Controlled Steer Mode (4x4x4) - ECU Controlled 2 Wheel Steer - Brake Mode 2 Wheel Steer - Brake Mode (Germany) All Wheel Steer - Brake Mode Auxiliary & Hydraclamp Hydraulics Auxiliary & Hydraclamp Hydraulics from S/No. 1332954 Speedometer Hand Held Tools Dedicated Quickhitch Pole Planter Smooth Ride System (SRS) Return to Dig (Shovel Reset) Hydraulic Speed Control (HSC) Loader Hydraulic Quickhitch - Changeover Schematic Circuits - From May 2009 (Digital Instruments) 3CX & 4CX Machines Schematic Circuits - 3C-14 (214e) & 3C Machines Basic Machine Engine Cold Start Heater Options Return to Dig (Shovel Reset) Smooth Ride System (SRS) Service Procedures Using a Multimeter Measuring DC Voltage Measuring Resistance Measuring Continuity Measuring Frequency Testing a Diode or a Diode Wire Battery Maintenance Testing Specific Gravity Testing Alternator General Description Service Precautions Charging Circuit Test Alternator Charging Test Starter Motor Starting Circuit Test Wire and Harness Number Identification Introduction Wire Numbers and Functions Wiring Harness Repair Introduction Repair Procedure Alternator Removal, Inspection and Replacement Dismantle and Assemble Renewing the Voltage Regulator and Brushes Renewing the Drive Pulley Starter Motor Removal, Inspection and Replacement Dismantle and Assemble Renewing the Brush Gear Renewing the Starter Solenoid Earth Points Location Harness Data - 3CX & 4CX Machines Drawings and Interconnection Harnesses - NOT Servo Machines Harnesses - Joystick Controls (Servo) Machines Drawings Harness Data - 3C-14 (214e) & 3C Machines Drawings and Interconnection Harnesses Drawings
Section D Controls Steering Column Removal and Replacement Dismantle and Assemble Column Switches Removal and Replacement Control Rods and Linkages Dismantle and Assemble Loader Valve Controls Excavator Valve Controls Auxiliary Footpedal Control Control Cables Removal and Replacement Cab Heater Control Cables Boom Lock Cable Engine Throttle Cable Park Brake Cable (Synchro Shuttle Machines) Park Brake Cable (Powershift Machines) Anti-Spill Mechanism 3C-14 (214e) & 3C Machines Fitting and Adjustment Shovel Reset Operation and Adjustment Shovel Reset 3C-14 (214e) & 3C Machines Operation and Adjustment
Section E Hydraulics Service Tools Numerical List Tool Detail Reference Technical Data Gearpump - 3CX, 4CX Machines Standard High Pressure Type Variable Flow Pump Gearpump - 3C-14 (214e) Machines Standard High Pressure Type Gearpump - 3C Machines (Sideshift) Loader Valve - 3CX, 4CX Machines Standard High Pressure Type Loader Valve - Variable Flow Loader Valve - 3C-14 (214e) Machines Standard High Pressure Type Loader Valve - 3C Machines (Sideshift) Excavator Valve - 3CX, 4CX Machines Standard High Pressure Type Excavator Valve - 3C-14 (214e) Machines Excavator Valve - 3C Machines (Sideshift) Auxiliary Valve - if fitted Smooth Ride System (SRS) - if fitted Accumulator Basic System Operation Component Location and Neutral Circuit Descriptions Gearpump - Double Pump Variable Flow Pump Introduction to Hydraulic Schematic Symbols General (Basic and Functional Symbols) Control Valves Example of Schematic Circuit Schematic Circuits 3CX Gearpump Machines (up to September 2007) 3CX `S' Series Options 3CX `S' Series and 4CX Gearpump Options 3CX Gearpump Machines (from September 2007) 4CX Variable Flow Machines 7 Spool with High Flow Options 6 Spool with High and Low Flow Options Hand Held Tools Option 3C-14 (214e) Backhoe 3C-14 (214e) Landscaper 3C Machines (Sideshift) Circuit Descriptions Gearpump - Operation Double Pump Variable Flow Pump - Operation Pressure and Flow Regulator Valve Loader Valve - Manual Control Neutral Circuit Unloader Operation Hydraulic Speed Control (HSC) Load Hold Check Valves Arms Lower Float Auxiliary Relief Valve (ARV) Operation Main Relief Valve (MRV) Operation Loader Valve - Variable Flow Operation Priority Inlet Section Operation Auxiliary Spool Loader Shovel Spool Loader Lift Spool Shuttle Valve Signal Network Excavator Valve - Manual Control Neutral Circuit Load Hold Check Valves One Way Restrictor Operation Slew Operation Slew Ram End Damping Slew A.R.V. and Anti-Cavitation Operation A.R.V. Operation Hydraclamp Valve Operation (Sideshift Machines) Smooth Ride System (SRS) - if fitted Smooth Ride System SRS with Hose Burst Protection Valves (HBPV) Option Electrical Connections Hydraulic Speed Control (HSC) Quick Reference Circuit Descriptions Wires and Connectors Fault Finding Hydraulic System Gearpump Machines Variable Flow Machines Smooth Ride System (SRS) - if fitted Service Procedures Hydraulic Contamination Hydraulic Fluid Quality Effects of Contamination Cleaning Operation Contaminant Standards Filters Gearpump Flow and Pressure Testing Variable Flow Pump Flow and Pressure Testing Regulator Valve Adjustment Renewing Drive Shaft Seal Shuttle Valve Signal Network - Testing Loader Valve - Pressure Testing Main Relief Valve (MRV) Unloader Valve Hydraulic Speed Control (HSC) Auxiliary Relief Valves - Using Hand Pump Excavator Valve - Pressure Testing Auxiliary Relief Valves - Using Hand Pump Ram Creep Tests - All Services Quick Release Couplings Connecting and Disconnecting Smooth Ride System (SRS) Accumulator Charging and Discharging Valve Block Spool Seals Seal Fitting `Positional Type' Hydraulic Adaptors Fitting Procedure 3C-14 (214e) Machines Checking Pump Flow Loader Valve - Pressure Testing 3C Machines (Sideshift) Checking Pump Flow Loader Valve - Pressure Testing Main Pump Gearpump Removal and Replacement Dismantle, Inspection and Assemble Variable Flow Pump Removal and Replacement Dismantle, Inspection and Assemble Main Pump - 3C Machines (Sideshift) Combined Gearpump/Priority Valve Removal and Replacement Dismantle, Inspection and Assemble Loader Valve Removal and Replacement Dismantle and Assemble Main Relief Valve (MRV) Auxiliary Relief Valves (ARV) and Load Hold Check Valves (LHCV) Unloader Valve Standard Spool Float Spool Electric Detent Spool Loader Valve - Variable Flow Removal and Replacement Dismantle and Assemble Priority Inlet Section Auxiliary Spool Loader Shovel Spool Loader Lift Spool Fitting Spool Seal Loader Valve - 3C-14 (214e) & 3C Machines Removal and Replacement Dismantle and Assemble Main Relief Valve (MRV) Auxiliary Relief Valves (ARV's) Standard Spool Float Spool Electric Detent Spool Excavator Valve Removal and Replacement Dismantle and Assemble Valve Block Auxiliary Relief Valves (ARV's) Hydraclamp Valve (Sideshift Machines) Hoses and Pipes (Sideshift Valve) Hoses and Pipes (Centremount Valve) Excavator Valve - Variable Flow Removal and Replacement Excavator Valve - 3C Machines (Sideshift) Removal and Replacement Dismantle and Assemble Valve Block Auxiliary Relief Valves (ARV's) Hydraclamp Valve Hose Burst Protection Valves - if fitted Hydraulic Operation and Schematics - Loader HBPV Load Raise Load Lower Relief Valve Hose Burst Smooth Ride System (SRS) - Option Hydraulic Operation and Schematics - Boom HBPV Load Raise Load Lower Relief Valve Hose Burst Hydraulic Operation and Schematics - Stabiliser HBPV Twin Check Valves Single Check Valve Test Procedures Checking Hose Burst Protection Valve Lowering a Load Pilot Valve Setting Procedure - Loader HBPV Removal and Replacement Dismantle and Assemble Loader HBPV Boom HBPV Hydraulic Rams Precautions During Use Installation Caution During Use Maintenance, Inspection Points Removal and Replacement Loader Shovel Ram Loader Lift Ram Slew Ram Stabiliser Ram (Sideshift) Stabiliser Ram (Centremount) Bucket Crowd Ram Dipper Ram Boom Ram Dismantle and Assemble Typical Ram Slew Ram Dipper Ram Power Sideshift Ram JCB Ram Sealing Procedure Oil Cooler Matrix Removal and Replacement Smooth Ride System (SRS) - if fitted Accumulator Removal and Replacement
Section F Transmission Service Tools Numerical List Tool Detail Reference Technical Data Tyre Sizes and Pressures Front Axles All Wheel Steer Machines 2 Wheel Steer Machines (4 Wheel Drive) 2 Wheel Steer Machines (2 Wheel Drive) Rear Axles All Wheel Steer Machines 2 Wheel Steer Machines Synchro Shuttle Gearbox SS700 Manual Gearbox Powershift Gearbox PS764 4 Speed PS766 6 Speed Engine Stall Speed Combinations - SA, SB Type Engines Engine Stall Speed Combinations - SD, SF Type Engines Basic Operation Introduction Front Axle - Steer Drive Type SD55, SD80 Component Identification Rear Axle - Steer Drive Type SD80 Component Identification Synchro Shuttle Gearbox Component Identification Principle of Operation Hydraulic and Electrical Operation Forward and Reverser Clutch Operation 2 and 4 Wheel Drive Clutch (4WD Pressure ON) Operation Synchromesh (Blocking Pin Type) Synchromesh Operation Powershift Gearbox Component Identification Principle of Operation Hydraulic and Electrical Operation Forward and Reverser Clutch Operation Mainshaft, Layshaft and 6 Speed Clutch Operation 2 and 4 Wheel Drive Clutch (4WD Pressure ON) Operation 2 and 4 Wheel Drive Clutch (4WD Spring ON) Operation ShiftMaster Operation Characteristics Drivepaths - 4 Speed Drivepaths - 6 Speed Torque Converter Principle of Operation Lock Up Torque Converter Principle of Operation Electrical Connections Synchro Shuttle Gearbox Introduction Quick Reference Wires and Connectors Powershift Gearbox Introduction Quick Reference Wires and Connectors Powershift Gearbox (ShiftMaster) Introduction ECU Electrical Connections Quick Reference Wires and Connectors Lock Up Torque Converter Introduction Quick Reference Wires and Connectors Service Procedures Front Axles SD55 and SD80 Renewing the Pinion Oil Seal Rear Axles PD70 and SD80 Renewing the Pinion Oil Seal Testing for Brake Piston Seal Leakage Synchro Shuttle Gearbox Flushing the Transmission Oil Torque Converter Stall Test Pressure and Flow Tests Forward and Reverse Solenoid Control Valve - Solenoid Coil Forward and Reverse Solenoid Control Valve Oil Pressure Switch Oil Temperature Switch Powershift Gearbox Flushing the Transmission Oil Torque Converter Stall Test Pressure and Flow Tests Clutch Leakage Tests Solenoid Control Valve Cartridge - Solenoid Coil Solenoid Control Valve Cartridge - Single Fixing Type Solenoid Control Valve Cartridge - Twin Fixing Type Oil Pressure Switch Oil Temperature Switch - Non Lock Up Torque Converter Variants Oil Temperature Switch - Lock Up Torque Converter Variants Powershift Gearbox (ShiftMaster) Speed Sensors Electronic Control Unit ShiftMaster Diagnostics 2.2 - User Guide ShiftMaster Setup 2.2 - User Guide ShiftMaster Flash Programmer - User Guide Testing the Lock up Torque Converter Speedometer - if fitted Calibration Procedure Fault Finding Powershift Gearbox Introduction Fault Finding Tables Synchro Shuttle Gearbox Introduction Fault Finding Tables Propshafts Removal and Replacement Front Axle Dead Steer Removal and Replacement Dismantle and Assemble Front Axles SD55 and SD80 Removal and Replacement Dismantle and Assemble Rear Axles PD70 and SD80 Removal and Replacement Dismantle and Assemble Synchro Shuttle Gearbox Removal and Replacement Dismantle, Inspection and Assembly Powershift Gearbox Removal and Replacement Dismantle, Inspection and Assembly Torque Converter Removal and Replacement Oil Cooler Matrix Removal and Replacement
Section G Brakes Technical Data Service Brakes Service Brakes - 3C Machines Park Brake Basic System Operation Compensating Master Cylinder Pedals Locked - Normal Operation Pedals Locked - Compensating Operation Pedals Unlocked - Normal Operation 2 and 4 Wheel Braking Modes 2 Wheel Steer Machines 4 Wheel Steer Machines Auto 2 and 4 Wheel Braking Electrical Connections 2 and 4 Wheel Braking Modes Quick Reference Wires and Connectors Fault Finding Brake System Service Procedures Service Brakes Brake Light Switch - Adjustment Bleeding Brake Vacuum Tests Brake Piston Seal Leakage Test Axle Breather (Braked Axles) - Inspection Park Brake Testing Adjustment (Synchro Shuttle Machines) Adjustment (Powershift Machines) Park Brake Switch - Adjustment Renewing the Brake Pads (Synchro Shuttle Machines) Master Cylinder and Servo Unit Removal and Replacement Dismantle and Assemble Remote Servo Unit - 3C Machines (Option) Removal and Replacement Servo Exhauster Unit Removal and Replacement Service Brakes Dismantle and Assemble Park Brake Synchro Shuttle Machines Torque Figures Calliper - Removal and Replacement Calliper - Dismantle, Inspection and Assemble Disc - Removal and Replacement Powershift Machines Dismantle, Inspection and Assemble
Section H Steering Service Tools Numerical List Tool Detail Reference Technical Data Hydraulic Steer Unit Priority Valve Priority Valve - 3C Machines (Sideshift) Basic Operation General Description 2 Wheel Steer Machines 4 Wheel Steer Machines Steer Circuit Schematics 2 Wheel Steer Machines 4 Wheel Steer Machines (Steer Mode Valve Type 1) 4 Wheel Steer Machines (Steer Mode Valve Type 2) Circuit Descriptions Steer Unit Operation Neutral Left Turn Right Turn Right turn, Unassisted Shock Valve 2 Wheel Steer Mode - Right Turn Crab Steer Mode - Right Turn Priority Valve Operation Neutral Turning Electrical System PCB (Relay) Controlled Steer Mode ECU Controlled Steer Mode Wires and Connectors Fault Finding Steering System Fault Finding Tables Diagnostic `Blink' Codes - if applicable Service Procedures Hydraulic Pressure Tests Standby Pressure Steering Pressure Steer Priority Valve - Cleaning 2 Wheel Steer Machines Bleeding the System 4 Wheel Steer Machines Re-phasing the Road Wheels Bleeding the System Proximity Switch - Setting Steer Mode Valve - Checking Solenoid Operation Checking Components for Internal Hydraulic Leakage Service Procedures - 3C Machines (Sideshift) Hydraulic Pressure Tests Standby Pressure Steering Pressure Steer Priority Valve - Cleaning Priority Valve Removal and Replacement Dismantle and Assemble Priority Valve - 3C Machines (Sideshift) Removal and Replacement Power Track Rod Removal and Replacement Link Arms Removal and Replacement Rams Dismantle and Assemble Steer Mode Valve (Type 1) - if fitted Removal and Replacement Dismantle and Assemble Steer Mode Valve (Type 2) - if fitted Removal and Replacement Dismantle and Assemble Hydraulic Steer Unit Removal and Replacement Dismantle and Assemble Dismantle Assemble
Section K Engine Service Tools Numerical List Tool Detail Reference Technical Data JCB DieselMax Engine Specifications Electrical Connections Cold Start Heater Diagnostic `Blink' Codes Wires and Connectors Electrical Sensors and Solenoids Removal and Replacement Sensor Switches Solenoids Engine Bay Support Frame Removal and Replacement Cooling Fan Viscous Coupling Principle of Operation Removal and Replacement Cooling Radiator Removal and Replacement Coolant Expansion Tank Removal and Replacement Low Coolant Level Sensor - if fitted Fuel Injection Pump Removal and Replacement Removal and Replacement JCB DieselMax Component Identification Removal Replacement
Section L Servo Controls Introduction Note Regarding Machine Types Service Tools Numerical List Tool Detail Reference Fuses and Relays Precision Control Machines Fuses Relays - Early Machines Relays - Later Machines Advanced EasyControl Machines Fuses Relays - Early Machines Relays - Later Machines to May 2009 Relays - From May 2009 EasyControl Machines Fuses Relays - Early Machines Relays - Later Machines to May 2009 Relays - From May 2009 Schematic Circuits - Electrics Precision Control Machines Machines with Clam Shovel/Ext. Dipper Manual Isolator Switch Machines with Clam Shovel/Ext. Dipper Isolator Relay Advanced EasyControl Machines - To May 2009 (Analog Instruments) Advanced EasyControl Machines - From May 2009 (Digital Instruments) EasyControl Machines - To May 2009 (Analog Instruments) EasyControl Machines - From May 2009 (Digital Instruments) Schematic Circuits - Hydraulics Precision Control Machines Advanced EasyControl Machines Variflow Pump Internal Circuit EasyControl Machines Precision Control SYSTEM Related Topics System Overview Excavator Servo Controls Load Sense and Pressure Compensator Function Inloader Valve and Hydraulic Speed Control (HSC) Function Grading Mode Auxiliary Service Thumbwheel Controls Joystick Enable and Seat Interlock Switches Hydraulic Operation and Schematics Unloader Valve Variant Electrical Operation and Schematics Joysticks Enable Circuit Hydraulic Speed Control (HSC) Inloader Override Circuit Clam Shovel and Extending Dipper Circuit Fault Finding Fault Finding Tables Thumbwheel Diagnostic `Blink' Codes Service Procedures Checking the Servo Pressure Checking the Main System Pressures Checking for Internal Leakage Fault in Load Sense Line Testing the Inloader Valve Pressure Compensator Network - Testing Bleeding the Auxiliary Service Pilot Hose Advanced EasyControl SYSTEM Related Topics System Overview Loader and Excavator Servo Controls Variflow Pump Load Sense and Pressure Compensator Function Auxiliary Service Thumbwheel Controls Joystick Enable and Seat Interlock Switches Hydraulic Operation and Schematics Electrical Operation and Schematics Joysticks Enable Circuit Excavator/Loader Changeover Circuit Excavator/Loader Auxiliary Service Controls Fault Finding Fault Finding Tables Thumbwheel Diagnostic `Blink' Codes Service Procedures Checking the Servo Pressure Checking the Main System Pressures Hydraulic Services Cycle Times Checking for Internal Leakage Fault in Load Sense Line Pressure Compensator Network - Testing `Quick-Connect' Pilot Hoses EasyControl SYSTEM Related Topics System Overview Excavator Servo Controls Unloader and Hydraulic Speed Control (HSC) Function Auxiliary Service Thumbwheel Controls Joystick Enable and Seat Interlock Switches Excavator Bucket Thumb Ram - if fitted Hydraulic Operation and Schematics Electrical Operation and Schematics Joysticks Enable Circuit Hydraulic Speed Control (HSC) Excavator/Loader Auxiliary Changeover Circuit Excavator/Loader Auxiliary Service Controls Fault Finding Fault Finding Tables Thumbwheel Diagnostic `Blink' Codes Service Procedures Checking the Servo Pressure Checking the Main System Pressure `Quick-Connect' Pilot Hoses Joystick and Stabiliser Controls Introduction Descriptions Joystick Controllers Stabiliser Controls ISO and SAE Control Pattern Changeover Valve - if fitted Joystick/Auxiliary Control Changeover Valve - if fitted Removal and Replacement Dismantle and Assemble Loader Lever Controls Dismantle and Assemble Servo Pressure Supply Valve Introduction Descriptions Proportional Solenoid Valves Operation PWM Controller Electronic Control Unit (ECU) Removal and Replacement Inloader Valve Introduction Specifications Descriptions Pump P2 Directed to Tank Pump P2 in Circuit (Inloader Operation) Inloader Operation Override Graph of System Pressures Removal and Replacement Hydraulic Pump (Gearpumps) Introduction Specifications Descriptions Removal and Replacement Dismantle and Assemble Hydraulic Pump (Variflow) Introduction Specifications Descriptions Removal and Replacement Dismantle and Assemble Loader Valve (Sectional Type) Introduction Specifications Descriptions Loader Valve Services Pressure Compensator Valves Operation Removal and Replacement Dismantle and Assemble Valve Block Sections Servo Operated Spool Manually Operated - Electric Detent Spool Manually Operated - Mechanical Detent Spool Load Sense Relief Valve External Auxiliary Relief Valves (ARV's) Internal Auxiliary Relief Valves (ARV's) - if fitted Flow Regulator Valve Pressure Compensator Valves Load Hold Check Valves Loader Valve (Monoblock Type) Introduction Specifications Descriptions Loader Valve Services Unloader Operation Removal and Replacement Dismantle and Assemble Excavator Valve (Sectional Type) Introduction Specifications Descriptions Excavator Valve Services Pressure Compensator Valves Operation Removal and Replacement Dismantle and Assemble Valve Block Sections Servo Operated Spool External Auxiliary Relief Valves (ARV's) Internal Auxiliary Relief Valves (ARV's) - if fitted Pressure Compensator Valves Load Hold Check Valves Excavator Valve (Monoblock Type) Introduction Specifications Descriptions Excavator Valve Services Hydraclamps Operation Removal and Replacement Dismantle and Assemble Auxiliary Valve Block (Sectional Type) Introduction Specifications Descriptions Auxiliary Valve Block (Monoblock Type) Introduction Specifications Descriptions Cab Seat Introduction Service Procedures Seat Position Sensors - Adjustment Removal and Replacement