JCBjcb indiabackhoe loader 3cx,4cx,214,215,217
Jcb 4DX
Maintenance schedule, common problems & OEM parts breakdown
The JCB 4DX is a mid-size backhoe loader engineered for the Indian construction market, powered by the JCB Stage 5-430 engine. This 3.0-litre, 4-cylinder, water-cooled, turbocharged unit delivers 55 kW (74 hp) at 2200 rpm and 440 Nm of torque. The machine features a maximum operating weight of 8470 kg, a 1.2 cu.m loader bucket, and a 0.32 cu.m backhoe bucket. It is available in 2WD and 4WD configurations, with the 4WD variant offering superior tractive effort. The 4DX succeeds the 3DX line, offering increased reach and digging depth capabilities while maintaining the JCB Q-brake system and EasyShift transmission.
The transition from the 3DX to the 4DX marks a shift toward higher productivity and stricter emissions compliance. The 4DX incorporates the JCB 430 CRDi engine with DOC and DPF aftertreatment, replacing older Stage IV or non-compliant predecessors. This generation matters in the used and parts market because its extended maintenance intervals (500-hour oil changes) and robust filtration systems reduce lifetime operating costs. The 4DX's heavy-duty boom and dipper construction, combined with its center-mounted high-force digging system, make it a durable asset for heavy loading and trenching, sustaining high resale value in the Indian infrastructure sector.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Jcb 4DX specifications
Engine
| Model | JCB 430, CRDi Stage 5 Engine |
| Type | 4 cylinder, water cooled, Turbocharged with EGR and aftertreatment system DOC and DPF |
| Gross Power | 55 kW (74 hp) @ 2200 RPM |
| Maximum Torque | 440 Nm @ 1150 RPM |
| Displacement | 3.0 L (3000 cc) |
| Emissions Tier | CEV Stage 5 |
Weights
| Operating Weight | 8470 kg |
| Short Dig Depth Weight | 8250 kg |
| Long Dig Depth Weight | 8450 kg |
Dimensions
| Transport Length | 6350 mm |
| Width Over Bucket | 2440 mm |
| Height to Top of Cabin | 2870 mm |
| Wheelbase | 2340 mm |
| Minimum Ground Clearance | 280 mm |
| Rear Track Width | 1730 mm |
| Front Track Width | 1910 mm |
Performance
| Forward Speed - 1st Gear | 6.2 km/hr |
| Forward Speed - 2nd Gear | 10.1 km/hr |
| Forward Speed - 3rd Gear | 21.9 km/hr |
| Forward Speed - 4th Gear | 40.0 km/hr |
| Reverse Speed - 1st Gear | 6.2 km/hr |
| Reverse Speed - 2nd Gear | 10.1 km/hr |
| Reverse Speed - 4th Gear | 39.97 km/hr |
| Maximum Digging Depth | 5360 mm |
| Maximum Working Height | 6250 mm |
| Loader Dump Height | 2930 mm |
| Loader Load Over Height | 3370 mm |
| Bucket Digging Force | 6716 kgf |
| Arm Digging Force | 4551 kgf |
| Loader Breakout Force | 5516 kgf |
| Bucket Tearout Force | 6716 kgf |
| Maximum Lift Capacity | 2547 kg |
| Turning Circle (Inner Wheels Braked - Outside Wheels) | 7610 mm |
| Turning Circle (Inner Wheels Braked - Outside Loader Bucket) | 10200 mm |
| Turning Circle (Inner Wheels Not Braked - Outside Wheels) | 9110 mm |
| Turning Circle (Inner Wheels Not Braked - Outside Loader Bucket) | 11700 mm |
Service capacities (summary)
| Fuel Tank | 128 L |
| Hydraulic System | 115 L |
| Engine Oil | 15 L |
| Engine Coolant | 20.5 L |
| Transmission | 17.5 L |
| Rear Axle | 20 L |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
4DX fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 15 L (3.96 US gal) | JCB Advanced engine oil (for DPF equipped low-emission engines) |
| Cooling system | 20.5 L (5.41 US gal) | Not specified in source text |
| Fuel tank | 128 L (33.80 US gal) | Not specified in source text |
| Transmission | 17.5 L (4.62 US gal) | JCB transmission oil |
| Rear axle | 20 L (5.28 US gal) | JCB gear oil |
| Hydraulic system | 115 L (30.39 US gal) | JCB hydraulic oil |
| Grease | N/A | JCB grease (boom grease or blue grease) |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Jcb 4DX maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 4DX beyond the schedule
Predictive Maintenance & Fluid Analysis
The JCB 4DX relies on extended fluid intervals to minimize downtime. At 500 hours, replace the primary fuel filter, extending from the previous 500-hour standard to 1000 hours on Stage 5 models. Take oil samples from the engine, hydraulic system, and axles at the first 500-hour service to establish a baseline. Monitor the hydraulic return filter magnet for metallic debris. Use JCB-spec long-life coolant and replace it at 1000 hours. The open-loop crankcase ventilation eliminates a filter change requirement, simplifying the engine oil service.
Corrective & Common Repairs
Common repairs on the 4DX involve the Q-brake system and hydraulic hoses. Inspect the oil-immersed multi-disc brakes on the rear axle for wear and ensure they are protected from dirt and water. The revised hydraulic hose layout on newer 4DX units reduces wear; check for chafing at the kingpost and boom pivots. Replace the primary and secondary fuel filters to protect the common-rail injectors. Address turbocharger boot condition and wastegate function during the 1000-hour service to maintain the 440 Nm torque output.
Overhaul & Rebuild Points
The 1000-hour service is the critical overhaul point for the 4DX. Drain and refill the hydraulic system, cleaning the tank to prevent contamination. Inspect the heavy-duty boom and dipper for structural cracks or unauthorized welding. Measure swing ring play on applicable models to detect bearing wear. Check injector spray patterns via the JCB ServiceMaster diagnostic tool. Replace the transmission oil and filter on torque converter variants. These tasks reset the machine's health for the next 1000-hour cycle.
Seasonal & Environment Servicing
In dusty environments, clean the air pre-cleaner daily and replace the engine air filter element per the restriction indicator. In hot climates, monitor the coolant expansion tank level and ensure the charge cooler is free of debris. For cold weather, verify the fuel system's water separation to prevent injector issues. The 4DX's 128-litre fuel tank reduces refueling frequency, but check the fuel tank sump for water accumulation. Ensure the ROPS/FOPS cabin seals are intact to maintain reduced in-cab noise and operator comfort.
4DX common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 40/302837 | Filter, Element, Fuel | Fuel system service | Check fitment → |
| 32/915801 | Element, Air, Safety | Air intake service | Check fitment → |
| 32/915802 | Element, Air, Main | Air intake service | Check fitment → |
| 40/302836 | Filter, Element, Mud | Scheduled service item | Check fitment → |
| 40/300893 | Filter, Element, Unqin | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
4DX fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| P0087 | Fuel rail/system pressure too low | Clogged fuel filters, failing lift pump, or restricted fuel line | Check fuel filter condition and fuel supply pressure |
| P0117 | Engine coolant temperature sensor circuit low voltage | Faulty coolant temperature sensor, shorted wiring, or poor ground | Inspect sensor connector for corrosion and check circuit resistance |
| P0521 | Engine oil pressure sensor range/performance issue | Faulty oil pressure sensor, low oil level, or sensor wiring fault | Verify oil level and inspect sensor electrical connections |
| P2047 | DEF/AdBlue injector circuit open (SCR system fault) | Open circuit in reductant injector wiring or faulty injector | Inspect wiring harness and connectors for damage or corrosion |
| U0100 | Lost communication with Engine Control Module (ECM) | Damaged CAN bus wiring, loose connector, or low battery voltage | Check battery health and inspect CAN bus connectors for tightness |
| 101 | Low transmission clutch pressure detected | Low transmission fluid, faulty pressure sensor, or internal transmission issue | Check transmission fluid level and inspect pressure sensor wiring |
| P0001 | Fuel volume regulator control circuit open | Open circuit in fuel volume regulator wiring or faulty regulator | Inspect wiring harness and connectors for damage or disconnection |
| P0110 | Intake air temperature sensor 1 circuit | Faulty intake air temperature sensor or wiring issue | Inspect sensor and wiring for damage or corrosion |
| P0335 | Crankshaft Position Sensor 'A' Circuit | Faulty crankshaft position sensor or damaged wiring | Inspect sensor and wiring for damage or corrosion |
| P0697 | Torque Reduction_Limp Home (ECU Internal 5V Supply 2 auxillary fault) | ECU internal fault or auxiliary circuit issue | Consult dealer for ECU diagnostics or replacement |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
4DX attachments & work tools
Standard Backhoe Bucket
Standard capacity is 0.32 m³ (0.42 yd³) for long dipper configurations and 0.40 m³ (0.52 yd³) for short dipper configurations. The bucket width is 940 mm (37 in). This attachment mounts directly to the dipper stick without requiring additional hydraulic couplers beyond the standard machine circuits.
Loader Shovel Bucket
Standard loader bucket capacity is 1.2 m³ (1.57 yd³). It connects via the machine's standard front linkage pins. No special hydraulic kit is required for basic loading operations, though auxiliary hydraulics may be used for tilt functions if equipped.
High Dump Bucket
JCB offers high dump bucket variants for the 4DX class to increase payload per pass. These buckets mount to the standard loader linkage. Specific capacity and weight ratings vary by configuration and series; verify exact dimensions with the dealer.
Hydraulic Quick Hitch
The 4DX supports quick hitch systems for rapid tool changes. The machine's variable displacement hydraulic pump and system pressure of 250 bar (3626 psi) support standard quick hitch operation. Ensure the selected hitch matches the dipper/loader pin geometry of the 4DX.
Hydraulic Breaker
The 4DX can operate hydraulic rock breakers using its auxiliary hydraulic circuit. The system provides a maximum pump flow of 148 L/min (39.1 gpm) at 2200 RPM. Breaker selection must match the machine's operating weight of 8470 kg (18,673 lb) and hydraulic flow capacity.
Pallet Forks
Pallet forks mount to the loader arms and utilize the standard hydraulic tilt circuit. They are suitable for material handling tasks. No additional hydraulic kit is required beyond the standard loader hydraulics.
All 4DX assemblies by section
Every catalogued assembly group for the Jcb 4DX. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
A Shovel
A1-1-1 Shovel
| 12***23 | Toeplate | 1 |
| 13***2Z | Bolt, 3/8"Unf X 3" | 4 |
| 13***3Z | Nut | 4 |
A1-7-2 Shovel, Clam, 6 In 1
| 12***11 | Bush | 2 |
| 12***19 | Bush | 2 |
| 12***23 | Bush | 2 |
A1-7-5 Carriage, Fork Lift
| 13***40 | Forklift, Kit | 1 |
| 13***41 | Arm, Fork | 2 |
| 13***42 | Latch | 2 |
A1-7-6 Jib, M/C Mounted
| 13***2Z | Bolt, 3/8"Unf X 3" | 4 |
| 13***3Z | Nut | 4 |
| 40***64 | Jib, Crane | 1 |
A1-7-4 Forks, Kit
| 12***32 | Pin, Pivot | 2 |
| 12***75 | Block, Rubber Pad | 2 |
| 12***27 | Fork | 2 |
A2-1-1 Bucket, Deep Profile, 4dx
| 12***15 | Bucket, 0.24 M3 | 1 |
| 12***16 | Bucket, 0.32 M3 | 1 |
| 12***17 | Bucket, 0.40 M3 | 1 |
A3-2-1 Fork, Lift, 6 In 1 Clam Shovel Mounted 1.0 Cu.M
| 12***32 | Pin, Pivot | 1 |
| 12***92 | Bracket, Fork Carrier, 1.0m3 Shovel; Replaced By 12***39, See San06030, Both Parts Are The Same Apart From One Hole | 1 |
| 12***93 | Bracket, Fork Rail Support | 1 |
A3-5-2 Breaker, Hammermaster Jcb 360 - 4dx
| 13***6Z | Bolt | 4 |
| 13***9Z | Bolt | 8 |
| 14***01 | Nipple, Grease, 90deg. Angle | 4 |
B Chassis Centremount
B1-3-2 Tank, Diesel Fuel
| 12***92 | Cap, Filler, Lockable, Supplied Without Key | 1 |
| 12***00 | Plate, Neck, Diesel Filler | 1 |
| 13***3Z | Screw, M8 X 16 | 6 |
B1-4-3 Stabiliser, Centremount
| 10***19 | Pin, Pivot | 2 |
| 10***47 | Pin, Pivot | 2 |
| 12***15 | Bush | 2 |
B1-2-1 Tank, Hydraulic
| 12***56 | Seal, Cap | 1 |
| 12***79 | Cover, Tank Inspection | 1 |
| 13***7Z | Screw, Hexagon M8 X 25 | 10 |
B1-13-5 Valve, Mounting, Loader - 4dx
| 12***46 | Mounting, Rubber | 3 |
| 13***0Z | Bolt, M10 X 40 | 2 |
| 13***3Z | Nut, Lock, M10 | 3 |
B1-11-2 Engine, Side Panel
| 13***5Z | Bolt | 4 |
| 14***6Z | Washer, M6 | 4 |
| 14***6Z | Washer, Spring | 4 |
B1-1-1 Chassis Centremount, 4dx
| 12***02 | Plate, Compression | 8 |
| 12***03 | Mounting, Cab, Rubber; Use 26***05, San 04452 | 4 |
| 13***0Z | Bolt, M16x100 | 2 |
B1-7-2 Step, Cab Access
| 13***8Z | Screw, M8x30 | 16 |
| 13***3Z | Nut, Self Lock, M8 | 16 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 32 |
B1-4-2 Stabiliser, Ram Rod Guard 4dx
| 13***7Z | Screw, M6 X 25mm Long | 8 |
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 6 |
| 13***7Z | Bolt, M10x25 | 6 |
B1-6-2 Grille, Front, 4dx
| 13***7Z | Bolt | 2 |
| 13***6Z | Bolt, M20 X 160mm Long; 160 Long. Length Of Bolt Depends Upon Spacer Arangement On Customers Machine., Bolt, M20 X 160mm Long | 2 |
| 13***9Z | Screw, Hex. Head | 4 |
B1-8-1 Fenders, Rear
| 13***8Z | Bolt, M10 X 30 | 10 |
| 13***3Z | Nut, Lock, M10 | 10 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 10 |
B1-5-1 Bonnet
| 12***43 | Buffer | 1 |
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 4 |
| 13***8Z | Screw, M8x30 | 2 |
B2-1-4 Cab, Shell, Unglazed
| 12***82 | Strap | 1 |
| 12***32 | Pin, Hinge | 4 |
| 12***92 | Plate, Door Catch | 2 |
B2-6-9 Sound Proofing, Cab Base, Heat Shield Kit
| 12***57 | Plate, Auxiliary Pedal Blanking | 1 |
| 14***03 | Screw | 4 |
| 33***77 | Shield, Heat Top | 1 |
B2-14-3 Cover, Jcb, Excavator Controls - 4dx
| 13***5Z | Screw, M5 X 20 | 8 |
| 14***03 | Screw | 4 |
| 33***05 | Gaiter, Excavator Lever | 2 |
B2-6-22 Sound Proofing, Canopy Roof
| 40***19 | Roof, Lining, Unqin | 1 |
| 82***52 | Fastener, Drive | 4 |
| 82***19 | Screw; Replaces 82***19 | 3 |
B2-13-1 Cab, Rear, Valance C/Mount
| 13***7Z | Screw, M6 X 25mm Long | 4 |
| 13***1Z | Nut | 2 |
| 14***1Z | Washer | 4 |
B2-18-1 Glazing, Direct, Replacement Material
B2-11-2 Mirror, External
| 13***1Z | Nut, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 2 |
| 33***34 | Mirror, Rear View | 1 |
B2-5-7 Window, Clear Glass, Direct Glazing
| 12***01 | Stud | 2 |
| 12***01 | Handle, Right Hand, (M6) | 1 |
| 12***02 | Handle, Left Hand | 1 |
B2-4-3 Window, Side, Clear Glass, Direct Glazing
| 11***22 | Handle | 1 |
| 12***00 | Frame, Side Window, Left Hand; Replaced By 12***00 + 82***93 Clear Or, 82***09 Tinted | 1 |
| 12***00 | Frame, Side Window, Right Hand; Replaced By 12***00 + 82***94 Clear Or, 82***10 Tinted | 1 |
B2-2-5 Cab, Glazing, Clear Glass, Direct Glazing
| 82***68 | Glass, Front Quarter Light, Left Hand Clear; Replaced By 82***65, See San05392 | 2 |
| 82***69 | Glass, Front Quarter Light, Right Hand Clear; Replaced By 82***66, See San05392 | 1 |
| 82***40 | Glass, Sixlights, Left Hand Clear | 1 |
B2-23-1 Cab, Roof
| 13***2Z | Bolt, M8x50 | 4 |
| 14***2Z | Washer | 4 |
| 14***7Z | Washer, Spring | 4 |
B2-3-3 Door, Clear Glass, Direct Glazing
| 12***79 | Bush, Hinge | 2 |
| 12***29 | Grommet | 1 |
| 12***30 | Grommet | 1 |
B2-7-5 Seat
| 13***8Z | Bolt | 4 |
| 14***6Z | Washer, Spring | 4 |
| 40***59 | Seat | 1 |
B3-3-1 Arm, Shovel Linkage
| 12***23 | Bush | 6 |
| 12***26 | Plate, Shovel Stop, 12mm | 2 |
| 13***9Z | Screw, M10x35mm | 4 |
B3-1-1 Arm, Loader
| 13***8Z | Bolt, M10x80 | 2 |
| 13***9Z | Bolt, M12x90mm | 2 |
| 13***0Z | Bolt, M12 X 100mm | 4 |
B3-4-1 Safety Strut, Loader Arms
| 12***00 | Strap | 1 |
| 14***1Z | Washer, 2 Ba | 1 |
| 40***24 | T Bolt | 1 |
B4-3-10 Kingpost, 15'6 & 17'0 Backhoe
| 13***1Z | Bolt, M12x110 | 2 |
| 13***3Z | Bolt, M12x130 | 1 |
| 13***4Z | Bolt, M12 X 140 Lg. | 1 |
B4-11-1 Kingpost, Bulkhead, C/M Issue-
| 13***8Z | Bolt, M10 X 30 | 3 |
| 33***37 | Plate, Bulkhead,Kingpost, Centremount | 1 |
B4-2-2 Boom, 17' C/ M - 4dx
| 12***33 | Pivot, Boom Nose End, Casting | 1 |
| 13***6Z | Bolt, M12 X 70mm | 4 |
| 13***0Z | Bolt, M12 X 100mm | 1 |
B4-12-2 Kingpost, Hose, Clamps
| 12***68 | Clamp, 5/8" Top, Centremount | 2 |
| 12***69 | Plate, Clamp | 4 |
| 12***89 | Clamp, 5/8" Middle | 2 |
B4-4-3 Boom, 15'6" C/ M - 4dx
| 12***33 | Pivot, Boom Nose End, Casting | 1 |
| 13***16 | Bolt | 4 |
| 13***0Z | Bolt, M12 X 100mm | 1 |
B4-2-1 Slew/Swing, Components -4 Dx
| 12***37 | Seal | 4 |
| 12***28 | Disc, Blanking | 1 |
| 12***40 | Cap, Bolt Cover | 2 |
B4-5-2 Dipper, C/Mount 15'6"
| 13***8Z | Bolt, M10x80 | 5 |
| 13***1Z | Bolt, M12x110 | 1 |
| 13***3Z | Nut, Lock, M10 | 5 |
B4-8-1 Tipping Link
| 14***02 | Nipple, Grease, Straight, 1/4 | 2 |
| 40***75 | Link, Tipping Assembly, Unqin | 1 |
| 40***10 | Liner, Bearing, Unqin | 2 |
B5-2-3 Tool Kit, Standard, 4dx
| 13***11 | Spanner, D.E. | 1 |
| 13***12 | Spanner, D.E | 1 |
| 13***13 | Spanner, D.E. | 1 |
B5-4-2 Decals
| 13***13 | Decal, Tyre Pressure | 1 |
| 13***11 | Decal, Pre Cleaner | 1 |
| 33***39 | Decal | 1 |
C Electrical
C1-3-11 Light, Rear, 4dx
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 4 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
| 14***7Z | Washer, Spring | 4 |
C1-5-1 Light, Working, Cab Front
| 40***07 | Light, Working | 2 |
| 55***03 | Spring, Unqin | 1 |
| 55***04 | Gasket, Unqin | 1 |
C1-1-14 Harnesses, Machine Electrics, - C/M 4dx
| 33***65 | Chassis Harness | 1 |
| 33***85 | Panel, Harness | 1 |
| 40***17 | Fuse, Maxi Harness | 1 |
C1-4-21 Mounting, Head, Light
| 12***09 | Cap, Nut M8; Replaces 69***72 | 4 |
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 4 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
C1-16-1 Electrics, Switches, Gauges
| 10***01 | Gasket | 1 |
| 13***2Z | Nut | 2 |
| 14***11 | Seal, Bonded | 1 |
C1-12-2 Horn, Installation, Reverse
| 12***31 | Bracket, Rear Horn Mounting, Centremount Biuld | 1 |
| 13***3Z | Screw, M8 X 16 | 1 |
| 13***1Z | Nut, M8 | 1 |
C1-6-1 Light, Number Plate, 4dx
| 40***06 | Light, Number Plate | 2 |
C1-5-2 Light, Working, Cab Rear
| 33***48 | Grommet, Cab Roof | 2 |
| 40***07 | Light, Working | 2 |
| 40***08 | Light, Work Lamp, Adjustable | 2 |
C1-14-1 Mounting, Support, Harness
| 12***69 | Clip, 'S'; Replaced By 12***13, See San07976 | 3 |
| 12***65 | Clip | 2 |
| 12***47 | Clip, Cable | 3 |
C1-12-1 Horn, Single, Tone
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 1 |
| 13***3Z | Nut, Self Lock, M8 | 1 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 1 |
C1-4-1 Light, Head, , 12 Volt, Left Hand Dip, White
| 40***48 | Light, Head Assembly L/H Dip, Unqin | 2 |
| 64***48 | Bulb | 1 |
| 64***34 | Bulb, Side Light, Unqin | 1 |
C1-2-1 Battery, Carriage, 4dx
| 12***69 | Clip, 'S'; Replaced By 12***13, See San07976 | 1 |
| 12***59 | Clip | 1 |
| 13***1Z | Bolt, M10 X 10 | 1 |
C3-4-1 Switches, Column Shuttle Transmission
| 12***58 | Plate, Retainer | 1 |
| 14***5Z | Washer, M5; Replaces 69***59 | 2 |
| 14***5Z | Washer, Spring, M5 | 2 |
C3-17-1 Fan, Face Level
| 13***7Z | Bolt, M10x25 | 1 |
| 13***3Z | Nut, Lock, M10 | 1 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 1 |
C3-8-1 Motor, Wiper
| 13***1Z | Nut, M8 | 2 |
| 14***1Z | Washer, Lock | 2 |
| 24***05 | O Ring | 2 |
C3-2-3 Fuses And Relays
| 13***5Z | Bolt | 4 |
| 14***1Z | Washer | 4 |
| 14***5Z | Washer, M5; Replaces 69***59 | 6 |
C3-3-10 Console, Steer Front 2/4wd
| 33***41 | Instrument, Front, Console | 1 |
| 33***55 | Cover, Front Steer Column | 1 |
| 33***56 | Cover, Rear Steer Column | 1 |
C3-10-1 Light, Interior, Cab
| 70***00 | Light, Cab Interior, Assembly | 1 |
| 72***54 | Bulb, 12v-10w - Festoon | 1 |
C3-1-11 Light, Cluster
| 70***00 | Cluster, Warning Light | 0 |
C3-2-2 Side Console, And Instrumentation-2/4wd
| 13***5Z | Screw, M5 X 20 | 4 |
| 14***03 | Screw | 3 |
| 33***85 | Gaiter, Excavator, 3cx Cab | 1 |
D Control
D1-13-2 Valve Mounting, Excavator/Stabiliser
| 13***8Z | Bolt, M10 X 30 | 4 |
| 13***4Z | Bolt, M10x60 | 3 |
| 13***3Z | Nut, Lock, M10 | 6 |
D1-3-3 Controls, Auxiliary, Valve Pedal And Linkage
| 12***89 | Pin, Spring,8mm Clevis; Superseded By 91***01 See San 20228 | 1 |
| 12***01 | Joint, Ball End, M8 Left Hand Thread | 1 |
| 12***02 | Joint, Ball, M8 Right Hand | 2 |
D1-1-1 Controls, Loader Lift, Shovel Gear Pump Build
| 13***50 | Pin, Clevis | 2 |
| 13***4Z | Bolt | 1 |
| 13***4Z | Bolt | 1 |
D1-2-24 Control, Excavator/Stabiliser, Jcb "X" Diagonal Pattern
| 03***03 | Pin, Clevis | 8 |
| 13***4Z | Bolt | 4 |
| 13***2Z | Nut | 10 |
D1-8-35 Control, Knob Excavator & Loader Valve Black
| 24***06 | Grommet, Blind, Noml Dia 20mm | 1 |
| 33***07 | Knob, Top | 2 |
| 33***45 | Knob, With Switch, Gear Lever | 1 |
D1-24-1 Control, Gear Change, 4dx
| 11***77 | Plate | 1 |
| 12***96 | Gaiter, Gear Lever | 1 |
| 13***7Z | Screw, M6 X 25mm Long | 4 |
D1-21-1 Controls, Parking Brake
| 12***73 | Gaiter, Hand Brake | 1 |
| 12***61 | Grommet, Cable/Harness | 1 |
| 12***53 | Lever, Parking Brake, Red Grip | 1 |
D1-7-1 Control, Knob Gear Lever
| 24***06 | Grommet, Blind, Noml Dia 20mm | 1 |
| 33***07 | Knob, Top | 1 |
| 33***47 | Knob, Ga Assembly. | 1 |
D1-1-2 Control, Loader Auxiliary, 3rd Spool Optional
| 03***03 | Pin, Clevis | 3 |
| 11***16 | Joint, Universal | 1 |
| 13***4Z | Bolt | 2 |
D1-20-4 Control, Brake Pedal, Fixed Steering Column
| 12***01 | Plate, Lock | 1 |
| 12***01 | Pin, Pivot, Brake Pedal | 1 |
| 12***75 | Bracket, Steering Mounting; Replaced By 12***28 | 1 |
D2-1-4 Control, Throttle, 4dx Stop
| 03***55 | Clip, Shut Off Cable Mtg. | 1 |
| 03***63 | Clevis | 1 |
| 12***57 | Gaiter | 1 |
D3-1-1 Steering Column, 4dx
| 12***42 | Knob, Assembly, Steering Wheel | 1 |
| 12***75 | Bracket, Steering Mounting; Replaced By 12***28 | 1 |
| 12***52 | Plate, Retainer | 1 |
E Circuit
E1-10-40 Circuit, Bucket, Ram, Mono Dipper - 4dx
| 12***00 | Pipe | 1 |
| 12***00 | Pipe | 1 |
| 13***9Z | Screw, M10x35mm | 2 |
E1-7-10 Circuit, Stabiliser, Centremount - 4dx
| 13***8Z | Screw, M8x30 | 4 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
| 14***7Z | Washer, Spring | 4 |
E1-21-1 Circuit, Attachment, Hammer - 4dx
| 12***87 | Mounting, Hook Clamp | 1 |
| 12***88 | Hook, 4" Spring | 1 |
| 12***94 | Ring, Support | 1 |
E1-4-1 Circuit, Transmission - 4dx
| 13***6Z | Bolt, Hex. Head, M10 X 70 | 2 |
| 14***14 | Washer, Seal | 1 |
| 40***80 | Hose | 1 |
E1-3-1 Circuit, Auxiliary, Loader Arm
| 13***7Z | Screw, Hexagon M8 X 25 | 2 |
| 13***7Z | Bolt, M10x25 | 2 |
| 13***3Z | Bolt, M8 X 55 | 2 |
E1-2-1 Circuit, Loader Arm, 4dx
| 13***9Z | Setscrew, M8x35 | 4 |
| 13***9Z | Screw, M10x35mm | 2 |
| 13***2Z | Bolt | 2 |
E1-1-2 Circuit, Neutral, 4dx
| 13***8Z | Bolt, M10 X 30 | 6 |
| 14***11 | Seal, Bonded | 1 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 6 |
E1-5-10 Valve, Steering, 4dx
| 14***18 | Seal, Bonded, 1/2" Bsp | 5 |
| 16***07 | Adapter | 1 |
| 16***17 | Adapter, 5/8" X 1/2" M/M | 2 |
E1-8-10 Circuit, Boom Ram, 4dx- C/M
| 13***4Z | Nut | 1 |
| 13***5Z | Nut | 1 |
| 14***8Z | Washer, Lock, Internal Teeth | 2 |
E1-9-30 Circuit, Dipper Ram, C/M
E1-6-2 Circuit, Slew Ram
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 2 |
| 33***67 | Hose, 3/8bsp 700mm | 2 |
| 62***22 | Hose, 1/4bsp X 650lg | 2 |
E2-2-1 Pump, Transmission, And Ss700 Syncro Shuttle Pump & Main Hyd Pump Drive
| 13***3Z | Bolt, M8 X 55 | 4 |
| 20***52 | Pump, Assembly, Transmission | 1 |
| 22***68 | Circlip, Internal | 1 |
E2-1-7 Pump, Transmission, Ss700 Syncro Shuttle Pump & Main Hyd Pump Drive
| 13***8Z | Bolt | 4 |
| 13***9Z | Screw, M12 X 35mm, Screw, M12 X 35mm; M12 X 35. Items 21 & 22 Are Used On 23***00 And 23***00 Throttle Brackets | 2 |
| 14***9Z | Washer | 2 |
E3-20-1 Valve, Flow Regulator, Hammer Circuit
| 13***8Z | Bolt, M8x80mm Long | 3 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 3 |
| 14***7Z | Washer, Spring | 3 |
E3-10-1 Valve, Steering
| 14***11 | Seal, Bonded | 1 |
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 16***02 | Adapter, 1/4" Bsp M/M | 1 |
E3-2-11 Valve, Standard, Spool
| 25***02 | Retainer, Wiper | 1 |
| 25***03 | Screw; Use 25/60***01 | 2 |
| 25***37 | Kit-Seal, Valve Spool | 1 |
E3-5-3 Adaptors, And Mounting ? Excavator Valve C/M
| 16***10 | Adapter, Includes 'O'Ring | 1 |
| 16***11 | Adapter | 1 |
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 1 |
E3-1-30 Valve, Loader, 3 Spool, With Float
| 14***11 | Seal, Bonded | 1 |
| 16***02 | Adapter | 1 |
| 16***06 | Adapter, 39.5mm Lg. M/M | 4 |
E3-7-1 Filter, Hydraulic, 4dx
| 13***8Z | Screw, M8x30 | 4 |
| 13***1Z | Nut | 4 |
| 14***26 | Washer, Seal | 1 |
E3-9-1 Valve, Priority, 4dx
| 14***11 | Seal, Bonded | 2 |
| 16***01 | Adapter; Early M/C'S Will Have Bonded Seals,Not'O'Ring. For Adapters On Early M/C'S See Steer Valve Page, E3., Adapter, Adapter; Early M/Cs Will Have Bonded Seals,Not'O'Rings. For Adapters On Earlier M/Cs See Steer Valve Page, E3. | 1 |
| 16***04 | Adapter, 3/4"Unf Sae "O" Ring, 3/8"Bsp Male, Adapter, 3/4"Unf Sae "O" Ring, 3/8"Bsp Male; Early M/C'S Will Have Bonded Seals,Not'O'Ring. See Note 1 | 1 |
E3-9-3 Valve Components, Auxiliary, Excavator & Roadbreaker
| 25***03 | Kit, Seal, Intersections; Superseded By 25/40***08 Same Seals + 2 Small, Pilot Seals. See San 10911. | 2 |
| 25***05 | Washer | 6 |
| 25***06 | Nut | 6 |
E3-2-15 Valve, Unloader Valve
| 25***16 | O Ring | 1 |
| 25***17 | Spring | 1 |
| 25***28 | Coil, Soleniod Assembly | 1 |
E3-6-3 Valve, Excavator, Centremount
| 25***01 | Screw | 12 |
| 25***02 | Retainer, Wiper | 12 |
| 25***03 | Seal, Wiper; Replaced By 25/97***48, See San04109 | 12 |
E3-2-14 Valve, Main Relief, Loader Valve
| 25***01 | Valve, Relief | 1 |
| 25***02 | Valve, Relief Mrv, 3300psi | 1 |
| 25***32 | Kit-Repair | 1 |
E3-9-2 Valve, Auxiliary, 4dx Backhoe
| 13***2Z | Bolt | 3 |
| 14***18 | Seal, Bonded, 1/2" Bsp | 2 |
| 14***21 | Seal, Bonded 3/4" Bsp | 2 |
E3-3-3 Valve, Auxiliary, Extradig Dipper Breaker
| 16***06 | Adapter, 39.5mm Lg. M/M | 2 |
| 16***09 | Adapter; Superseded To 16***58 D.Jackson 16/05/08, San26156 (Pi R02728 Aa) Leak Free | 3 |
| 24***07 | O Ring | 5 |
E3-1-5 Valve, Loader, 2 Spool With Float
| 16***02 | Adapter | 1 |
| 16***06 | Adapter, 39.5mm Lg. M/M | 4 |
| 16***08 | Adapter | 1 |
E3-8-2 Lubricants & Filters
| 13***05 | Diesel | 0 |
| 22***33 | Fluid Anti-Freeze, 1 | 0 |
| 40***93 | Filter, Element, Unqin | 1 |
E3-2-16 Valve, Relief, Auxiliary & Load Hold Check
| 25***11 | Cap | 3 |
| 25***12 | O Ring | 3 |
| 25***13 | Spring | 1 |
E3-6-2 Valve, Relief, Dipper , Boom, Bucket & Slew 4dx
| 25***58 | Valve, Relief, 4500psi | 1 |
| 25***60 | Valve, Relief, 3800psi | 2 |
| 25***05 | Seal, Arv Service Kit | 1 |
E3-9-4 Valve, Sections, Excavator Auxiliary
| 25***30 | Seat, Spring | 2 |
| 25***27 | Plate, Seal Retainer | 2 |
| 25***28 | Seal, Wiper | 2 |
E4-3-4 Stabiliser, Cyl. - 4dx
| 33***00 | Cylinder, Stablizer | 1 |
| 55***99 | Ring | 1 |
| 55***72 | Bush, Unqin | 1 |
E4-1-12 Ram, Shovel
| 55***27 | Piston, Rod, Unqin | 1 |
| 55***28 | Tube, Unqin | 1 |
| 55***29 | Piston, Unqin | 1 |
E4-3-1 Steering, Ram, 2wd
| 40***50 | Ram, Steer 2wd | 1 |
| 55***91 | Seal, Dust, Unqin | 1 |
| 55***45 | O Ring, Std, Unqin | 1 |
E4-1-4 Dipper, Ram, C/M 15'6"
| 40***36 | Dipper, Ram | 1 |
| 55***98 | Bush, Unqin | 1 |
| 55***99 | Bush, Unqin | 1 |
E4-1-7 Dipper, Ram, C/M 17
| 40***72 | Dipper, Ram | 1 |
| 55***98 | Bush, Unqin | 1 |
| 55***99 | Bush, Unqin | 1 |
E4-1-2 Bucket, Bucket Tilt Cyl. - Ldr
| 40***43 | Ram, Shovel | 1 |
| 55***75 | Piston, Rod Nut, Unqin | 1 |
| 55***95 | Grease, Nipple, Unqin | 1 |
E4-3-2 Steering, Ram, 4wd
| 13***8Z | Bolt, M20 X 80mm | 2 |
| 13***1Z | Bolt, Hex. Hd, M20x110 | 2 |
| 14***2Z | Washer, M20 | 2 |
E4-1-6 Boom, Ram, C/M - 15'6" & 17"
| 55***03 | Piston Rod, Sub Assembly | 1 |
| 55***04 | Tube, Sub Assembly | 1 |
| 55***05 | Piston | 1 |
E4-1-1 Bucket, Tilt Cyl. - Ldr
| 40***44 | Ram, Lift | 1 |
| 55***95 | Grease, Nipple, Unqin | 1 |
| 55***75 | Piston, Unqin | 1 |
F Axles, Wheels & Transmission
F1-6-10 Axle Assembly, Steering 30kph & 35kph
| 13***9Z | Bolt | 16 |
| 44***02 | Joint, Knuckle Swivel | 1 |
| 44***03 | Joint, Knuckle Swivel | 1 |
F1-6-1 Axle Assembly, Steering, 30kph & 35kph
| 12***38 | Stop, Lock, 35mm Long | 2 |
| 14***21 | Seal, Bonded 3/4" Bsp | 2 |
| 22***82 | Circlip | 2 |
F1-6-30 Steering, Axle Assembly 2wd Steering
| 21***16 | Pin, Tension | 1 |
| 40***32 | Shim, Kit | 0 |
| 44***05 | Nut, Adjusting | 2 |
F1-30-10 Power Track Rod, 4wd
| 12***89 | Gaiter | 2 |
| 12***55 | Gaiter | 2 |
| 12***53 | Link, Trackrod, M24/M22 | 2 |
F1-3-1 Axle Pivot, Pin And Greasing
| 13***0Z | Bolt, M12 X 100mm | 1 |
| 13***3Z | Nut, M12 | 1 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 1 |
F1-10-1 Axle Assembly, Steering
| 10***01 | Nut | 12 |
| 12***01 | Pin, King | 2 |
| 12***02 | Pin, Cotter | 2 |
F1-6-20 Hub, Components 4wd Steering 30kph & 35kph
| 13***7Z | Bolt, Coated | 4 |
| 22***54 | Circlip; Replaces 370a0400z, San 12455 | 6 |
| 33***60 | Plug Filler | 2 |
F2-1-20 Crown Wheel And Pinion, And 36kph
| 13***8Z | Bolt | 8 |
| 33***54 | Verbus Ripp M12 X 30l | 12 |
| 40***32 | Shim, Kit | 1 |
F2-1-1 Axle Assembly, Rear Drive 36kph
| 13***7Z | Bolt, Coated | 4 |
| 13***6Z | Bolt | 28 |
| 22***54 | Circlip; Replaces 370a0400z, San 12455 | 6 |
F2-1-30 Brake, Axle
| 22***71 | Circlip, External | 4 |
| 40***26 | Pin, Reaction | 6 |
| 40***13 | Brake, Piston | 2 |
F2-1-10 Differential, Assembly & 36kph
| 13***7Z | Cab, Screw M10 X 25, G12.9 Micro-Encaps | 8 |
| 14***21 | Seal, Bonded 3/4" Bsp | 2 |
| 33***53 | Nut, M30 X2, Static | 1 |
F3-4-2 Wheel & Tyre, Assembly, Front, 36kph- 12.5x18
| 33***21 | Wheel, Front Assembly | 2 |
| 40***10 | Wheel, & Tyre 4wd, Unqin | 2 |
| 40***15 | Tyre | 1 |
F3-4-1 Wheel & Tyre, 4dx
| 13***53 | Adapter, Air Filling | 2 |
| 33***47 | Wheel Rim | 2 |
| 40***24 | Tyre, Unqin | 2 |
F3-1-1 Propshafts, Transmission,Front, Drive Axle Manual
| 13***04 | Cap, Screw, Nyloc | 8 |
| 33***15 | Strap, Bearing | 4 |
| 55***94 | Kit, Spider, Unqin | 2 |
F3-2-1 Propshafts, Transmission, Rear Drive Axle
| 13***0Z | Bolt, 1/2" X 1.1/2" Long | 4 |
| 13***4Z | Nut | 4 |
| 33***15 | Strap, Bearing | 2 |
F5-3-40 Transmission, 4wd Clutch Unit Drop Box
| 22***15 | Circlip | 1 |
| 33***60 | Plate, Pressure, 4mm | 1 |
| 33***16 | Clutch, Assembly - 4wd | 1 |
F5-2-1 Transaxle Assembly, Syncro Shuttle 4wd 36kph
| 33***58 | Set Screw M10x1.5x30 | 10 |
| 40***75 | Case, Front, Machined | 1 |
| 41***00 | Sealant | 0 |
F5-5-10 Transmission, 4wd Ss700 Syncro Shuttle External Components
| 13***9Z | Screw, M10x35mm | 12 |
| 13***3Z | Screw, M8 X 16 | 2 |
| 13***8Z | Capscrew, M5 X 30 | 4 |
F5-7-1 Torque Converter, W300
| 04***02 | Bolt, M8 X 20 | 6 |
| 04***36 | Kit-Drive Plate, Torque Converter, See Ti 2/479; Ss By 04/60***64 | 1 |
| 04***37 | Drive Plate, Part Of Kit 04***13 | 1 |
F5-1-1 Tranmission, 2wd Internal Components
| 13***3Z | Screw, M8 X 16 | 2 |
| 13***9Z | Screw, M10 X 35 | 12 |
| 13***8Z | Capscrew, M5 X 30 | 4 |
F5-1-50 Transmission, 2wd Gear Change
| 22***80 | Circlip | 1 |
| 33***60 | Gaiter, Gear Lever | 1 |
| 33***61 | Gear, Lever Turret | 1 |
F5-1-20 Transmission, 2wd Internal Components
| 33***56 | Nut Stake M30 X 2 | 1 |
| 33***57 | Screw, Flanged M10x1.5x35 | 4 |
| 33***52 | Cover Machining -Lay | 1 |
F5-1-30 Transmission, 2wd Gear Change
| 33***16 | Plate, Counter, Clutch | 10 |
| 33***17 | Plate, Pressure, Clutch, 6.0 mm | 2 |
| 33***19 | Plate, Shim, Clutch, 1.2mm | 0 |
F5-11-1 Dipstick & Filler, Manual Transmission
| 00***74 | Clamp, U | 1 |
| 13***2Z | Nut, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 2 |
F5-4-20 Transmission, 4wd Internal Components
| 33***56 | Nut Stake M30 X 2 | 1 |
| 33***57 | Screw, Flanged M10x1.5x35 | 4 |
| 33***52 | Cover Machining -Lay | 1 |
F6-8-1 Tranmission, Mounting
| 11***09 | Washer | 2 |
| 11***01 | Mounting, Metalastik | 2 |
| 13***7Z | Bolt | 2 |
G Brakes
G1-3-1 Brake, Parking
| 13***6Z | Bolt, Hex. Head, M10 X 70 | 1 |
| 13***4Z | Nut | 2 |
| 13***3Z | Nut, Lock, M10 | 4 |
G1-1-10 Brake, System, System 4dx
| 12***41 | Cover, Reservoir; Replaced By 16***43, See San 10088 | 1 |
| 12***16 | Pipe, Servo Link | 1 |
| 12***19 | Plate, Master Cyl Adapter | 1 |
N Engine, Complete
N1-8-1 Engine, Mounting
| 11***09 | Washer | 2 |
| 11***01 | Mounting, Metalastik | 2 |
| 13***9Z | Bolt, M12x90mm | 2 |
N1-1-8 Engine, Complete, 96bhp
| 30***02 | Fan, 4dx | 1 |
| 33***23 | Engine, Turbo 96 Hp Bs-Ii | 1 |
N6-6-2 Mud Filter, Related Parts
| 00***14 | Filter, Mud Assembly | 1 |
| 00***15 | Filter, Element | 1 |
| 03***65 | Plug | 1 |
N6-6-1 Sedimentor , &, Related Parts
| 03***76 | Bolt | 2 |
| 03***77 | Washer | 4 |
| 40***54 | Filter, Sediment, Unqin | 1 |
N6-4-2 Fuel System
| 00***14 | Filter, Mud Assembly | 1 |
| 03***65 | Plug | 1 |
| 03***76 | Bolt | 4 |
P Air Cleaner
P3-3-2 Filter, Air, Turbocharged
| 32***01 | Element, Air, Safety | 1 |
| 32***02 | Element, Air, Main | 1 |
| 32***00 | Bracket, Air Filter Mounting | 1 |
P3-3-3 Filter, Pre-Cleaner
| 13***7Z | Screw, Hexagon M8 X 25 | 2 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
P3-4-2 Silencer & Extension, Turbo
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 2 |
| 13***7Z | Bolt, M10x25 | 2 |
| 13***3Z | Nut, Lock, M10 | 2 |
P4-4-2 Radiator
| 22***02 | Clip, Jubilee; Superseded By 22***03 By Jcb Standards On P, I S61/0006 (17/10/00) See San 14225 | 2 |
| 22***12 | Clip, Jubilee | 6 |
| 40***36 | Hose, Leak-Off, Unqin | 1 |
P4-3-1 Radiator & Fittings, And Mounting
| 13***5Z | Bolt | 4 |
| 13***3Z | Bolt, M10 X 16 | 8 |
| 13***8Z | Bolt, M10 X 30 | 4 |
Frequently asked questions
What engine does the JCB 4DX use?
The JCB 4DX is powered by the JCB Stage 5-430 engine, a 3.0-litre, 4-cylinder, water-cooled, turbocharged CRDi unit with DOC and DPF aftertreatment. It delivers 55 kW (74 hp) at 2200 rpm and 440 Nm of torque at 1150 rpm.
What is the operating weight of the JCB 4DX?
The maximum operating weight of the JCB 4DX is 8470 kg. This weight may vary slightly depending on the specific configuration, attachment package, and regional emissions standards.
What model replaced the JCB 3DX?
The JCB 4DX is the successor to the JCB 3DX in the mid-size backhoe loader segment. It offers increased digging depth, larger bucket capacity, and compliance with Stage 5 emissions regulations.
What 4DX owners discuss
What are the known powertrain and hydraulic behaviors for the JCB 4DX?
The JCB 4DX utilizes a 4-speed fully synchromesh gearbox with an integral torque converter and an electrically operated reversing shuttle. The transmission is paired with ECOXcellence technology to manage fuel efficiency. Hydraulic systems feature a center-mounted high-force digging system with smoother multi-function operation due to upgraded hydraulic flow calibration. The machine offers 4WD as standard on many configurations, utilizing industrial tires (Front 12.5 x 18 12 PR, Rear 16.9 x 28 12 PR) for stability. The hydraulic oil capacity is 115 liters. Operators note that simultaneous tasks in tough conditions benefit from the revised hydraulic hose layout, which increases durability and reduces wear.
What undercarriage or wear patterns are typical for this machine type?
As a wheeled backhoe loader, the JCB 4DX does not have a tracked undercarriage. Wear patterns focus on the tire and axle assemblies. The machine uses industrial tires (12.5 x 18 front, 16.9 x 28 rear) designed for grip and durability in varied ground conditions. The heavy-duty boom and high-capacity buckets are built to endure tough conditions. The center-mounted digging system and robust construction minimize structural stress, but operators should monitor the oil-immersed 'Q' brakes for wear. The machine's operating weight of approximately 8,450–8,470 kg places significant load on the front axle and tires during lift-and-carry operations.
What are the engine quirks per series for the JCB 4DX?
The JCB 4DX is powered by the JCB 430 CRDi Stage 5 engine, a 3.0-liter, 4-cylinder, water-cooled, turbocharged unit with EGR and aftertreatment systems (DOC and DPF). It delivers 74 hp (55 kW) at 2,200 rpm and 440 Nm of torque at 1,150 rpm. Common issues with this generation of JCB EcoMax engines include injector faults and sensitivity to fuel quality. Faulty injectors can cause rough running, white smoke, and poor starting. The common rail fuel system requires clean fuel to prevent wear. Additionally, air intake filtration is critical; in dusty environments, standard filters may clog quickly, leading to power loss and accelerated ring/bore wear. A cyclone pre-filter is often recommended for heavy dust applications.
What are common electrical or sensor issues?
The JCB 4DX features JCB LiveLink for real-time machine diagnostics, fuel monitoring, and remote monitoring. Common electrical issues reported in the broader JCB community for similar electronic models include ECU failures, wiring faults, and ground issues causing shutdowns. Operators should check the battery voltage (minimum 12.4V for 12V systems) and clean terminals, as high-compression diesels require strong crank speed. Sensor faults can prevent the ECU from allowing the engine to run, leading to no-start conditions. The machine also includes predictive diagnostics with onboard alerts to minimize downtime, but operators must ensure the mobile app connectivity is functioning correctly for remote support.
What to check when buying a used 4DX?
When inspecting a used JCB 4DX, verify the engine generation to identify potential failure modes. For Stage 5 models, check for injector performance and fuel system cleanliness. Inspect the hydraulic hoses for the revised layout to ensure durability and check for leaks. Verify the condition of the oil-immersed 'Q' brakes and the 4WD system engagement. Check the air filtration system for clogging or damage, especially if the machine was used in dusty environments. Ensure the JCB LiveLink system is active and that the digital diagnostics are reporting no critical faults. Confirm the operating weight and configuration match the required specs, as variations exist between short and long dig depth models.
What safety-critical fixes are required for the JCB 4DX?
The JCB 4DX is equipped with ROPS (Roll Over Protection Structure) and FOPS (Falling Object Protection Structure) cabins for operator safety. The machine uses oil-immersed 'Q' brakes for reliable stopping power. Any repairs to the braking system, hydraulic lines, or structural components must be performed according to OEM specifications to maintain safety integrity. Have your dealer verify the condition of the ROPS/FOPS structure and the calibration of the safety interlocks before operation.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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