JCB 4DX Backhoe Loader Service Manual
411 pages · Publication 550-42914
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- Models
- 4DX
- Manual type
- Service Manual
- Pages
- 411
- Publication
- 550-42914
- Condition
- Brand new

What's inside
From the manual's own table of contents: 11 sections, 224 entries. See sample pages (PDF, 296 KB)
General Information7 topics
- Machine Identification Plate
- Engine Identification Number
- Serial Plates
- Torque Settings
- Body & Framework
- Hydraulics
- Transmission
Care & Safety4 topics
- Safety Notices
- General Safety
- Operating Safety
- Maintenance Safety
Routine Maintenance47 topics
- Checking for Damage
- Cleaning the Machine
- Tyre Inflation
- Checking the Wheel Nut Torques
- Lubricants - Health and Safety
- Fitting and Removing
- Opening and Closing the Bonnet
- Service Schedules
- Service Capacities
- Coolants
- Engine Preservation
- General
- Loader Arms
- Backhoe & King Post
- Front Axle (2 Wheel Drive Machines)
- Front Axle (4 Wheel Drive Machines)
- Driveshafts
- 6 - in - 1 Clamshovel
- Loader Quickhitch
- Backhoe Quickhitch
- Extending Dipper
- Park Brake Cable
- Control Levers
- Cleaning the Pre-cleaner
- Changing the Elements
- Checking & Change
- Fan Belt – Check Tension
- Filling the Tank
- Draining the Moisture Separator
- Changing the Filter Element
- Bleed the System
- Checking the Oil Level
- Hydraulic Tank Cap
- Changing the Suction Strainer
- Cleaning the Tubes/Fins
- Changing the Oil and Filter
- Checking the Differential Oil Level
- Changing the Differential Oil
- Checking the Hub Oil Levels
- Changing the Hub Oil
- Changing the Oil
- Parking Brake Adjustment
- Checking the Foot Brake Fluid Level
- First Aid - Electrolyte
- Cleaning the Battery
- Checking the Electrolyte Level
- Jump Starting – Safety and Procedure
Attachment20 topics
- Technical Data
- Major Components
- Identification
- Lubricants
- Service Schedule
- Greasing
- Start UP
- Raising the Piston
- Piston Stroke
- Hydraulic Pressure Testing
- Lower Tool Bushing
- Side Plates
- Swivel Couplings
- Accumulators
- Pressure Adjusting Valve
- Tie Rods
- Valve Body
- Cylinder
- Front Head
- Accumulators Charging
Body & Framework13 topics
- Welding
- Slide Hammer Kit Procedure
- Rivet Nut Tool Procedure
- Removing Broken Glass and Old Sealant
- Preparing and Installing New Glass
- Cab ROPS/FOPS Structure - Checks
- Removal and Replacement
- Extending Dipper - Wear Pad Adjustment
- Loader Arms - Removal and Replacement
- Boom - Removal and Replacement
- Dipper - Removal and Replacement
- Kingpost - Removal and Replacement
- Clearances
Electricals21 topics
- Fuses & Relays
- Circuit Schematics
- Maxi Fuse harness
- Panel Harness 2WD
- Panel Harness 4WD
- Cab Harness 2 WD
- Cab Harness 4 WD
- Chassis Harness 2WD
- Chassis Harness 4WD
- Using a Multimeter
- Measuring DC Voltage
- Measuring Resistance
- Measuring Continuity
- Testing a Diode
- Maintenance
- Safety
- Activating new battery
- Specific Gravity Testing
- Testing
- Charging Test
- Starting Circuit Test
Controls5 topics
- Steering Column
- Loader Valve Controls
- Excavator Valve Controls
- Auxiliary Foot Pedal Control
- Control Knob
Hydraulics49 topics
- Hydraulic Pumps
- Relief Valve Pressures
- Smooth Ride System
- Component Location and Neutral Circuit Descriptions
- Introduction to Hydraulic Schematic Symbols
- Single Pump Operation
- Double Pump Operation
- Neutral Circuit
- Load Hold Check Valves Operation
- Arms Lower
- Float
- Main Relief Valve (MRV) Operation
- Auxiliary Relief Valve (ARV) Operation
- Neutral Circuit
- Load Hold Check Valves Operation
- One Way Restrictor Operation
- Slew Operation
- Slew Ram End Damping
- Slew ARV and Anti Cavitation Operation
- Auxiliary Relief Valve Operation
- Dipper Make-up Check Valve
- Hydra clamp Valve Operation
- Hydraulic System
- Hydraulic Contamination
- Pumps Flow and Pressure Testing
- Pressure Testing - Main Relief Valve (MRV)
- Loader Valve HUSCO - Pressure Testing
- Auxiliary Relief Valves (ARV's)
- ARV pressure test on machine
- ARV pressure using Hand Pump
- Ram Creep Tests - All Services
- Valve Block Spool Seals - Seal Fitting
- Charging/Discharging the Accumulator
- Removal and Replacement
- Dismantling and Assembly
- Main Relief Valve (MRV)
- Auxiliary Relief Valves (ARV’s)
- Unloader Valve
- Standard Spool
- Float Spool
- Hydra Clamp valve
- Loader Lift Ram
- Loader Shovel Ram
- Boom Ram
- Dipper Ram
- Bucket Crowd Ram
- Slew Ram
- Stabiliser Ram
- Ram Sealing Procedure
Transmission27 topics
- Front Axles
- Rear Axles
- Synchro Shuttle Gearbox
- Stall Data
- Wheels and Tyres
- Axles
- Component Identification
- Principle of Operation
- Hydraulic and Electrical Operation
- Synchromesh (Blocking Pin Type)
- Forward/Reverse Clutch Operation
- 2/4 Wheel Drive Clutch Operation
- 2/4 Wheel Drive Clutch
- Renewing the Pinion Oil Seal
- Stall Test
- Pressure and Flow Tests
- Tow Procedure
- Removal & Replacement
- Pinion Depth Setting
- Crown & Pinion Meshing
- Dismantling
- Assembly
- Crownwheel and Pinion Meshing
- Collapsible Spacer Assembly
- 2/4 Wheel Drive Clutch (4WD Pressure On)
- 2/4 Wheel Drive Clutch Pressure Testing
- Piston Ring Seals - Fitting Procedure
Brakes9 topics
- System type
- Master Cylinder - Description
- Fault Finding
- Brake Light Switch - Adjustment
- Brake Piston Seal Leakage Test
- Adjustment
- Bleeding
- Caliper Dismantling and Assembly
- Brake Disc - Removal and
Steering11 topics
- Steer System Schematics
- Hydraulic Operation
- Neutral
- Right Turn
- Left Turn
- Left Turn – Unassisted
- Shock Valve
- Turning
- Pressure Testing
- Link Arms - Removal and Replacement
- Rams - Dismantling and Assembly
Inside this manual
Real pages from this service manual (411 pages). Open the sample pages (PDF, 296 KB)
- Diagram, page 121: Section C
- Specifications, page 157: Technical Data
- Repair procedure, page 289: Front Axle
- Color page, page 65: Issue 1
- Color page, page 272: Issue 1
This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 411 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).