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Jcb G440QX(JCB GENERATOR)
Maintenance schedule, common problems & OEM parts breakdown
The JCB G440QX is a standby and prime power diesel generator within the QX series, designed for industrial and commercial applications. It utilizes a Scania DC13-072A six-cylinder engine to deliver a standby rating of 464 kVA (371 kW) and a prime rating of 419 kVA (335 kW) at 50 Hz. The unit weighs 4,524 kg and measures 450 x 180 x 234 cm. Configurations include a sound-attenuated weatherproof canopy, a 740-liter bunded steel fuel tank, and a Deep Sea 7320 or 7310 control panel. The QX series succeeded earlier JCB generator lines and is positioned below the G500QX in the power hierarchy.
Across the QX generation, JCB standardized the use of Scania engines for superior fuel efficiency and emissions compliance, moving away from previous manufacturer partnerships. The G440QX matters in the used market due to its robust Scania powertrain, which offers extended service intervals and high reliability. Its modular design and availability of genuine JCB parts make it a cost-effective solution for backup power, while the integrated Livelink telematics provide valuable operational data for fleet management.
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 G440QX(JCB GENERATOR) specifications
Engine
| Engine Model | Scania DC13-072A (also listed as Scania DC13-72A) |
| Cylinders | 6 |
| Gross Power | 476 hp (355 kW) |
| Emissions Tier | Stage II / Euro 3 / Tier II (varies by configuration/series) |
Weights
| Operating/Shipping Weight | 4,524 kg (9,974 lb) |
Dimensions
| Transport Length | 4.50 m (14 ft 9 in) |
| Transport Width | 1.80 m (5 ft 11 in) |
| Transport Height | 2.34 m (7 ft 8 in) |
Performance
| Prime Power Rating | 400 kVA / 320 kW (at 50 Hz) |
| Standby Power Rating | 440 kVA / 352 kW (at 50 Hz) |
| Voltage | 400/230 V or 400/415 V (3-phase) |
| Frequency | 50 Hz |
| Amps per Phase | 675 A |
Service capacities (summary)
| Fuel Tank Capacity | 740 L (195 gal) |
| Fuel Autonomy | 12.6 hours (standard); 18.7 hours @ 50% load |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G440QX(JCB GENERATOR) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the G440QX(JCB GENERATOR) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil pressure and coolant temperature sensors via the Deep Sea control panel. Analyze oil samples for fuel dilution and metal wear particles every 500 hours. Check the fuel water separator daily to prevent injector damage. Inspect the alternator excitation system for voltage stability under load. Verify the condition of the battery charger and terminals to ensure reliable starting.
Corrective & Common Repairs
Replace the three-stage fuel filter if pressure drop indicators show restriction. Clean the heavy-duty air filter element regularly to maintain airflow. Inspect the Mecc Alte alternator for insulation breakdown or bearing noise. Check the Scania engine for oil leaks at the valve cover and oil filter housing. Test the emergency stop circuit and automatic shutdown functions for safety compliance.
Overhaul & Rebuild Points
Perform a major engine overhaul at 10,000 hours or when compression drops below specification. Replace the turbocharger if shaft play exceeds limits or oil consumption increases. Inspect the generator bearings and replace if vibration levels rise. Check the fuel injection pump timing and replace injectors if spray patterns are poor. Rebuild the control panel relays if contact wear causes erratic operation.
Seasonal & Environment Servicing
Install the engine block heater in temperatures below -5°C to ensure cold starts. Inspect the acoustic canopy seals and bump protection blocks for weather damage. Drain the fuel water separator more frequently in humid conditions to prevent microbial growth. Check the alternator anti-condensation heater for proper operation in damp environments. Verify the bunded fuel tank integrity to prevent environmental contamination.
G440QX(JCB GENERATOR) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| SC1471259 | Filter, Fuel | Fuel system service | Check fitment → |
| SC1393641 | Head, Fuel Filter | Fuel system service | Check fitment → |
| SC1393640 | Element, Filter, Fuel Feed | Fuel system service | Check fitment → |
| SC1393639 | Filter, Fuel Feed | Fuel system service | Check fitment → |
| SC1763776 | Element, Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
G440QX(JCB GENERATOR) 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. | Inspect and replace fuel filters; check fuel lift pump operation and line integrity. |
| P0117 | Engine coolant temperature sensor circuit low voltage | Faulty coolant temperature sensor, shorted wiring harness, or poor connector contact. | Check sensor resistance and wiring continuity; inspect connectors for corrosion. |
| P0521 | Engine oil pressure sensor range/performance issue | Faulty oil pressure sensor, low oil level, or sensor circuit malfunction. | Verify oil level; test sensor signal and wiring; replace sensor if faulty. |
| P2047 | Reductant (DEF/AdBlue) injector circuit open | Open circuit in the SCR system injector wiring or faulty injector solenoid. | Inspect SCR injector wiring harness and connectors; test injector resistance. |
| U0100 | Lost communication with Engine Control Module (ECM) | CAN bus network fault, loose connector, or ECM power/ground issue. | Check battery voltage and ground straps; inspect CAN bus connectors for damage. |
| P0335 | Crankshaft Position Sensor 'A' Circuit No Signal | Failed crank sensor, damaged tone wheel, or open wiring circuit. | Inspect crank sensor wiring and connector; check sensor gap and tone wheel integrity. |
| P0102 | Mass Air Flow (MAF) Sensor Low Voltage Fault | Dirty or faulty MAF sensor, air leak, or intake restriction. | Clean MAF sensor; inspect intake ducting for leaks; check sensor voltage output. |
| P0088 | Fuel rail/system pressure too high | Faulty fuel pressure regulator, stuck fuel pressure control valve, or sensor error. | Check fuel pressure regulator operation; inspect fuel pressure control valve circuit. |
| P0115 | Engine coolant temperature sensor circuit malfunction | Faulty coolant temperature sensor or erratic signal from the ECU. | Test sensor resistance across temperature range; verify ECU signal processing. |
| P0321 | CAN bus message error for engine speed from engine ECU | Intermittent CAN bus communication loss or sensor signal noise. | Inspect CAN bus wiring for damage; check connector tightness and grounding. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
G440QX(JCB GENERATOR) attachments & work tools
Power Output & Ratings
Standby rating is 464 kVA (371 kW) or 440 kVA (352 kW) depending on the specific configuration and source. Prime rating is 419 kVA (335 kW) or 400 kVA (320 kW). Output is 400/415 V at 50 Hz with 675 A per phase.
Engine Specifications
Powered by a Scania DC13-072A 6-cylinder engine with an electrical governor. Available in Stage IIIA emissions compliant versions. The engine is paired with a MeccAlte HM335A1 alternator.
Control & Telematics
Equipped with a Deep Sea Electronics 7310 or 7320 control panel. Features JCB LiveLink remote telematics with a standard 36-month data subscription. Includes a Digital Standard Regulator (DSR) AVR for voltage regulation.
Fuel System
Standard 740 L bunded steel fuel tank providing approximately 18.7 hours of runtime at 50% load. Options include a three-way fuel valve and extended fuel tanks. Includes a fuel level sensor and battery charger.
Enclosure & Structure
Acoustic weatherproof canopy with heavy-duty steel construction. Includes forklift pockets and a central lifting point compliant with LOLER standards. Features door stays, bump protection blocks, and large access doors for maintenance.
Electrical Protection
Includes a 630 A MCB or 3-pole MCCB with adjustable Earth Leakage Relay. Internal and external emergency stop buttons are standard. Options include a 4-pole MCCB, integral socket box, and automatic transfer switch (ATS) panels.
Maintenance & Safety
Includes engine block heater, coolant and oil temperature senders, and low oil pressure switch. Heavy-duty air filter and alternator winder protection are standard. Optional extras include a battery isolator and alternator anti-condensation heater.
Dimensions & Weight
Weight is 4524 kg. Dimensions are 450 cm length, 180 cm width, and 234 cm height. The unit is designed for both indoor and outdoor use with sound attenuation materials.
All G440QX(JCB GENERATOR) assemblies by section
Every catalogued assembly group for the Jcb G440QX(JCB GENERATOR). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Z Jcb Generator Set
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z00 Generator Sets
Z1-2-1 Engine, Complete, Dc12 Ems
| 32***95 | Engine, Assembly, Dc12 Ems | 1 |
Z1-1-1 Engine, Complete, Dc12 Ems
| 32***94 | Engine, Assembly, Dc12 Ems | 1 |
| SC***10 | Tool, Rear Crank Seal | 1 |
Z1-3-1 Engine, Complete, Dc12 Ems
| 32***96 | Engine, Assembly, Dc12 Ems | 1 |
Z1-11-1 Engine, Complete, Dc16 Ems
| 32***97 | Engine, Assembly, Dc16 Ems | 1 |
Z4-1-20 Gasket Set, Cylinder Head, Dc16
| SC***83 | Gasket, Manifold, Fuel | 1 |
| SC***61 | Gasket, Fuel Feed | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 1 |
Z4-1-1 Kit, Cylinder, Gaskets
| SC***83 | Gasket, Manifold, Fuel | 1 |
| SC***61 | Gasket, Fuel Feed | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 1 |
Z4-2-10 Gasket Set, General Overhaul, Dc12
| SC***83 | O Ring | 1 |
| SC***11 | O Ring | 2 |
| SC***85 | O Ring | 1 |
Z4-2-20 Gasket Sets, General, Overhaul Dc16
| 33***60 | Kit-Gasket | 1 |
| 33***84 | Gasket | 1 |
| 33***92 | Ring, Sealing | 4 |
Z4-1-10 Gasket Set, Cylinder Head, Dc12 59a
| SC***51 | Gasket, Rocker Cover, Upper | 1 |
| SC***42 | Seal, Fuel Feed | 4 |
| SC***61 | Gasket, Fuel Feed | 1 |
Z5-5-10 Kit, Piston, & Liner Dc12
| 33***21 | Liner, Cylinder | 1 |
| 33***22 | O Ring | 1 |
| 33***23 | O Ring | 1 |
Z5-5-1 Kit, Piston, & Liner Dc9
| 33***26 | Piston, Single Speed | 1 |
| 33***55 | Kit-Piston & Liner | 1 |
| 33***56 | Ring, Piston, Compression | 1 |
Z5-5-20 Kit,Piston & Liner, Dc16
| SC***29 | Pin, Gudgeon | 1 |
| SC***87 | Shim, =0.2mm, Liner | 0 |
| SC***43 | Ring, Retaining | 2 |
Z5-1-10 Service Kit, Outer, Turbocharger, Dc12
| SC***37 | Gasket | 1 |
| SC***71 | Gasket | 1 |
| SC***85 | Element, Oil Filter | 1 |
Z6-3-20 Filter, Oil, Dc16
| SC***08 | Filter, Oil, Assembly | 1 |
| SC***54 | O Ring | 1 |
| SC***28 | Tube | 1 |
Z6-1-20 Fuel Filter, Dc16
| SC***57 | Cover, Fuel Feed | 1 |
| SC***59 | Filter, Fuel | 1 |
| SC***58 | Pipe, Fuel Feed | 1 |
Z6-2-20 Filter, Water Seperator, Dc16
| SC***02 | Bowl, Fuel Feed | 1 |
| SC***41 | Head, Fuel Filter | 1 |
| SC***40 | Element, Filter, Fuel Feed | 1 |
Z6-3-10 Filter, Oil, Dc12
| 33***08 | Element, Oil Filter | 1 |
| SC***98 | Adapter | 1 |
| SC***58 | Adapter | 1 |
Z6-4-20 Filter, Oil, Centrifugal, Dc16
| SC***83 | O Ring | 1 |
| SC***35 | Nozzle | 1 |
| SC***85 | O Ring | 1 |
Z6-4-1 Filter, Oil, Centrifugal Dc9
| 33***49 | Head, Filter Unit | 1 |
| 33***50 | Cleaner, Centrifugal Oil, Assembly | 1 |
| 33***51 | Spring | 1 |
Z6-1-1 Fuel Filter, Assembly
| 33***11 | Housing, Fuel Filter, Assembly | 1 |
| 33***12 | Bracket | 1 |
| 33***13 | Screw, M8 X 50 | 1 |
Z6-1-10 Fuel Filter, Dc12
| SC***89 | Head, Filter | 1 |
| SC***04 | Plug | 1 |
| SC***76 | Element, Fuel Filter | 1 |
Z6-4-10 Filter, Oil, Centrifugal Dc12
| 33***50 | Cleaner, Centrifugal Oil, Assembly | 1 |
| 33***51 | Spring | 1 |
| 33***08 | Element, Oil Filter | 1 |
Z6-2-1 Filter, Water Seperator, Dc9 & Dc12
| SC***02 | Bowl, Fuel Feed | 1 |
| SC***41 | Head, Fuel Filter | 1 |
| SC***40 | Element, Filter, Fuel Feed | 1 |
Z8-1-20 Front End Drive, Accessories, Fan Belt Dc16
| SC***11 | Bolt, Allen, M8 X 35mm | 6 |
| SC***29 | Belt | 1 |
| SC***47 | Bolt, M10x80, Flange Screw | 1 |
Z8-6-10 Drive Belt Guard, Dc12
| 33***06 | Guard, Drive Belt, Upper | 1 |
| 33***07 | Washer | 2 |
| SC***05 | Bracket | 3 |
Z8-6-1 Drive, Belt, Guard Dc9
| 33***70 | Guard, Drive Belt, Upper Right | 1 |
| 33***71 | Guard, Drive Belt, Upper Left | 1 |
| 33***72 | Guard, Drive Belt, Lower | 1 |
Z8-3-10 Front End Drive, Accessories, Alternator & Water Pump Dc12
| 33***23 | Spacer | 1 |
| 33***24 | Belt, Poly-V, L=1700 | 1 |
| SC***47 | Bolt, M10x80, Flange Screw | 1 |
Z8-2-20 Fan, Assembly, 965mm Dc16
| 33***48 | Bearing | 1 |
| 33***41 | Bearing, Assembly | 1 |
| 33***42 | Screw, Flange, M12 X 140 | 4 |
Z8-5-1 Fan, Cowling Dc9
| 33***28 | Plate, Fan Cowling | 1 |
| 33***29 | Bracket, Upper | 1 |
| 33***30 | Bracket, Lower | 1 |
Z8-3-1 Front End Drive, Accessories, Alternator & Water Pump Dc9
| 33***77 | Idler, Roller | 1 |
| 33***83 | Idler, Roller | 1 |
| 33***84 | Adjuster, Belt | 1 |
Z8-4-10 Casing, Transmission, Belt Dc12
| 33***82 | Screw, Flange, M8 X 50 | 1 |
| 33***56 | Tube, Spacer, L = 10mm | 1 |
| 33***96 | Washer | 7 |
Z8-2-10 Fan, Assembly, 912 Mm Dc12
| 33***21 | Fan, Pusher, 9 Blades, 912mm | 1 |
| 33***22 | Screw, M12 X 55 | 3 |
| SC***27 | Washer | 6 |
Z8-3-20 Front End Drive, Accessories, Alternator & Water Pump Dc16
| 33***95 | Belt, Poly-V, L=1795mm | 1 |
| SC***87 | Roller, Fan Belt | 1 |
| SC***65 | Belt, Drive | 1 |
Z8-1-1 Front End Drive, Accessories, Fan Belt Dc9
| 33***88 | Washer | 9 |
| 33***76 | Bracket | 1 |
| 33***77 | Idler, Roller | 1 |
Z8-5-10 Fan, Cowling Dc12
| 33***93 | Washer, Spring | 3 |
| 33***33 | Seal | 2 |
| 33***16 | Cowling, Fan | 1 |
Z8-2-1 Fan, Pusher 787mm Dc9
| 33***81 | Spacer, L = 106mm | 1 |
| 33***82 | Fan, Pusher 787mm Dia | 1 |
| SC***50 | Screw, Flange | 4 |
Z8-1-10 Front End Drive, Accessories, Fan Belt Dc12
| 33***25 | Adjuster, Belt | 1 |
| 33***26 | Spacer | 2 |
| 33***27 | Pulley, Idler | 1 |
Z9-2-1 Starter Motor, Dc16
| 33***01 | Motor, Starter | 1 |
| SC***23 | Stud | 3 |
| SC***26 | Plate, Starter Motor | 1 |
Z9-1-1 Starter Motor, Dc9 & Dc12
| SC***26 | Plate, Starter Motor | 1 |
| SC***48 | Relay | 1 |
| SC***11 | Motor, Starter | 1 |
Z10-1-10 Alternator, 65amp, Dc12
| 33***40 | Alternator, 65a | 1 |
| 33***41 | Alternator | 1 |
| 33***42 | Kit-Mounting | 4 |
Z10-1-1 Alternator, 100amp
| 33***00 | Alternator | 1 |
| SC***43 | Pulley, Alternator | 1 |
| SC***22 | Nut | 1 |
Z10-1-20 Alternator, 100amp, Dc16
| 33***00 | Alternator | 1 |
| SC***92 | Sleeve, Guide | 2 |
| SC***64 | Alternator | 1 |
Z11-5-1 Engine, Harness, Installation Dc9
| 33***82 | Screw, Flange, M8 X 50 | 2 |
| 33***13 | Screw, M8 X 50 | 2 |
| 33***45 | Bracket | 1 |
Z11-4-20 Protection Plate, & Mounting Bracket, Dc16
| SC***89 | Shield, Heat, Cable Routeing | 1 |
| SC***56 | Holder, Cable, Bushing | 4 |
| SC***30 | Shield, Heat, Rear Of Engine | 1 |
Z11-4-10 Protection Plates, & Mounting Bracket, Dc12
| SC***74 | Plate, Protective | 1 |
| SC***63 | Bracket | 1 |
| SC***94 | Plate, Protective | 1 |
Z11-2-10 Harnesses, &, Sensors Dc12 59a
| 33***90 | Sensor, Temperature | 1 |
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***54 | Harness | 1 |
Z11-1-20 Unit, Electronic Control, Dc16
| 33***43 | Housing, Contact Engine Control Unit, 10-Pol | 0 |
| SC***91 | Cover, Engine Control Unit | 2 |
| SC***22 | Bolt | 8 |
Z11-3-20 Cable Retainer, Cylinder Head
| 33***02 | Holder, Cable Clamp | 2 |
| 33***03 | Holder, Cable Bushing | 2 |
| SC***91 | Holder, Cable, Clamp | 8 |
Z11-1-10 Ecu Unit, Dc9 & Dc12
| 33***43 | Housing, Contact Engine Control Unit, 10-Pol | 0 |
| SC***91 | Cover, Engine Control Unit | 2 |
| SC***61 | Strap | 8 |
Z11-2-20 Harnesses, &, Sensors Dc16
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***04 | Cable, Harness | 1 |
| 33***05 | Cable, Harness | 1 |
Z11-6-1 Injection Equipment, Harnesses, Dc9
| 33***07 | Screw, Self Tapping, M6 X 20 | 2 |
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***99 | Harness | 1 |
Z11-3-10 Cables, Retainer, Cylinder Head Dc12 59a
| 33***44 | Duct | 1 |
| SC***03 | Screw | 6 |
| SC***69 | Attaching Plate | 1 |
Z11-5-10 Engine, Cable Installation, Dc12 59a
| 33***13 | Screw, M8 X 50 | 2 |
| 33***45 | Bracket | 1 |
| 33***46 | Duct | 1 |
Z12-1-20 Fuel Pipes, High Pressure, Dc16
| 33***17 | Valve, Overflow | 1 |
| 33***94 | Seal, Fuel Feed | 1 |
| 33***97 | Pipe, Fuel | 1 |
Z12-1-10 Fuel Pipes, High Pressure, Dc12 59a
| 33***17 | Valve, Overflow | 1 |
| 33***19 | Bolt, Banjo | 6 |
| 33***21 | Clamp | 3 |
Z12-2-20 Fuel Return Pipes, Dc16
| 33***17 | Valve, Overflow | 1 |
| SC***77 | Nut | 1 |
| SC***65 | Bolt | 1 |
Z12-2-1 Fuel Manifold, Leakoff Pipe
| 33***22 | Pipe, Fuel Leak Off, Assembly | 1 |
| SC***76 | Clamp, Bleed Assembly. | 1 |
| SC***90 | Adapter, Union, Straight | 1 |
Z12-1-1 Fuel System, Without Compressor
| 33***14 | Pipe, Fuel Assembly | 1 |
| 33***15 | Bracket | 1 |
| 33***16 | Pipe, Fuel Assembly | 1 |
Z13-1-1 Fuel Injector, Dc9 & Dc12
| 33***52 | Holder, Fuel Injector | 5 |
| 33***53 | Screw, Flange, M10 X 40 | 5 |
| 33***91 | Injector, Assembly | 5 |
Z13-1-20 Fuel Injector, Dc16
| SC***64 | O Ring, Injector | 8 |
| SC***73 | Nozzle, Injector, Fuel | 1 |
| SC***39 | Washer, Injector | 8 |
Z15-1-1 Fuel Feed Pump, Dc9 & Dc12
| SC***11 | O Ring | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
| SC***09 | Screw | 2 |
Z15-1-20 Fuel Lift Pump, Dc16
| 33***96 | Sleeve, Coupling | 1 |
| SC***70 | Seal, O-Ring | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
Z16-1-1 Water Pump, Dc9
| 33***78 | Pump, Water | 1 |
| 33***79 | Housing, Water Pump | 1 |
| 33***80 | Ring, Sealing | 1 |
Z16-1-20 Water Pump, Dc16
| SC***64 | Gasket, Water Pump | 1 |
| SC***21 | Screw, M8 X 40 | 4 |
| SC***25 | Screw, M8 X 60 | 8 |
Z16-1-10 Water Pump, Dc12 59a
| 33***30 | Ring, Sealing | 1 |
| 33***31 | Pulley | 1 |
| 33***36 | Kit-Repair, Water Pump | 0 |
Z17-2-20 Water Bleed Pipe, Dc16
| SC***89 | Pipe, Bleed Assembly. | 1 |
| SC***15 | Hose, Bleed Assembly. | 1 |
| SC***86 | Connector, Bleed Pipe | 8 |
Z17-2-10 Water Bleed Pipe, Dc12 59a
| 33***34 | Bolt, Banjo | 1 |
| 33***35 | Bolt, Banjo | 5 |
| SC***24 | Banjo, Connector | 1 |
Z17-1-10 Water Inlet, Connector, Dc12 59a
| 33***32 | Bracket | 1 |
| 33***33 | Spacer | 1 |
| SC***86 | Connector, Water Inlet | 1 |
Z18-1-20 Thermostat & Housing, Dc16
| SC***25 | Screw, M8 X 60 | 4 |
| SC***24 | Thermostat, 83 Degrees | 1 |
| SC***25 | Gasket, Thermostat | 1 |
Z18-1-10 Thermostat & Housing, Dc12 59a
| SC***85 | Housing, Thermostat | 1 |
| SC***19 | Screw, M8 X 30 | 10 |
| SC***87 | O Ring | 1 |
Z18-1-1 Thermostat & Housing
| 33***24 | Housing, Thermostat | 1 |
| 33***25 | Cover, Thermostat Housing, Low Turbo | 1 |
| 33***26 | Cover, Thermostat Housing, High Turbo | 1 |
Z19-2-20 Crankcase, Breather, Dc16
| 33***63 | Pipe, Breather | 1 |
| 33***64 | Plug | 1 |
| 33***65 | Clamp, Hose | 3 |
Z19-2-10 Breather Tube, Crankcase, Dc12
| SC***20 | Screw | 1 |
| SC***82 | Pipe, Crankcase Breather | 1 |
| SC***32 | Nut, Flange M8 | 2 |
Z19-1-20 Rocker Cover, Dc16
| SC***90 | Cover | 8 |
| SC***06 | Cap, Oil Filler | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 8 |
Z19-1-1 Rocker Cover
| 33***82 | Screw, Flange, M8 X 50 | 20 |
| 33***83 | Cover, Rocker | 1 |
| 33***84 | Cover, Rocker | 1 |
Z19-2-1 Crankcase, Ventilation, Open Dc9
| 33***56 | Tube, Spacer, L = 10mm | 1 |
| 33***65 | Clamp, Hose | 3 |
| 33***14 | Hose | 1 |
Z19-1-10 Rocker Cover, Dc12
| 33***11 | Cover, Rocker, Closed Crankcase Ventilation | 2 |
| 33***12 | Cover, Rocker, Open Crankcase Ventilation | 1 |
| SC***51 | Gasket, Rocker Cover, Upper | 6 |
Z20-1-20 Rocker Assembly, Dc 16
| SC***10 | Screw, Adjusting | 2 |
| SC***89 | Arm, Rocker, Injector | 8 |
| SC***92 | Plug, Rivet | 8 |
Z20-1-10 Rocker Assembly, Dc12 59a
| SC***10 | Screw, Adjusting | 1 |
| SC***89 | Arm, Rocker, Injector | 6 |
| SC***92 | Plug, Rivet | 6 |
Z21-1-20 Pushrods & Tappets
| 33***73 | Tappet, Assembly | 4 |
| 33***74 | Tappet, Roller | 2 |
| 33***75 | Tappet, Roller | 2 |
Z21-1-10 Pushrods & Tappets
| 33***05 | Bolt | 3 |
| 33***06 | Rod, Push | 10 |
| SC***02 | Circlip | 2 |
Z22-1-10 Turbocharger, Dc12 59a
| 33***19 | Turbocharger | 1 |
| SC***92 | Kit-Service | 1 |
Z22-2-1 Turbo Pipework, Solenoid, & Wastegate Valves Dc9
| 33***29 | Plug, Screw M10 X9 | 1 |
| 33***60 | Bracket | 1 |
| 33***61 | Valve, Solenoid | 1 |
Z22-1-1 Turbocharger
| 33***59 | Turbocharger | 1 |
Z22-1-20 Turbocharger, Dc16 44a/45a
| 33***86 | Turbocharger | 1 |
Z23-1-10 Turbo Pipework, Dc12
| 33***09 | Bracket | 1 |
| 33***10 | Hose | 1 |
| SC***71 | Gasket | 1 |
Z23-2-20 Turbo Exhaust, Pipework, Dc16
| SC***32 | Nut | 1 |
| SC***74 | Clamp, "V" | 1 |
| SC***01 | Pipe | 1 |
Z23-2-10 Turbo Exhaust, Pipework, Dc12
| SC***33 | Pipe, Exhaust Elbow | 1 |
| SC***32 | Nut | 1 |
| SC***37 | Clamp, "V" | 1 |
Z23-1-1 Turbo Pipework, Dc9
| 33***10 | Hose | 1 |
| 33***39 | Pipe, Lubrication | 1 |
| 33***40 | Pipe, Return | 1 |
Z23-1-20 Turbo Pipework, Dc16
| SC***44 | Adapter | 2 |
| SC***71 | Gasket | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
Z25-1-10 Air Induction, Manifold, Dc12 59a
| 33***20 | Sensor, Charge Air Pressure | 1 |
| SC***17 | Manifold, Induction | 1 |
| SC***31 | Screw, M8 X100 | 24 |
Z25-1-20 Manifold, Induction, Dc16
| 33***87 | Manifold, Induction | 1 |
| 33***88 | Manifold, Induction | 1 |
| SC***58 | Pipe, Flange | 2 |
Z25-1-1 Air Induction, Manifold, Dc9
| 33***46 | Manifold, Induction | 1 |
| SC***31 | Bolt, M8x100, Flange Screw | 20 |
| SC***11 | Seal | 1 |
Z26-1-20 Manifold, Exhaust, Dc16
| 33***77 | Manifold, Exhaust | 2 |
| 33***78 | Ring, Sealing | 8 |
| 33***79 | Screw, Flange | 16 |
Z26-1-1 Manifold, Exhaust, Dc9
| 33***41 | Manifold, Turbo Exhaust | 1 |
| 33***42 | Manifold, Exhaust | 1 |
| 33***43 | Gasket | 1 |
Z26-1-10 Manifold, Exhaust, Dc12 59a
| 33***16 | Manifold, Turbo Exhaust | 1 |
| 33***17 | Manifold, Exhaust | 2 |
| 33***18 | Stud, M10 X 50 | 2 |
Z26-2-20 Manifold, Exhaust, Heat Shield Dc16
| 33***90 | Shield, Heat | 2 |
| 33***91 | Bracket | 4 |
| SC***13 | Bolt | 4 |
Z27-1-20 Cylinder Head, Dc16
| 33***85 | Head, Cylinder | 8 |
| 33***90 | Insert, Valve Seat | 2 |
| 33***91 | Insert, Valve Seat, Intake O/S Stage 2/Tier2 | 0 |
Z27-1-10 Cylinder Head, Dc12 59a
| 33***90 | Insert, Valve Seat | 2 |
| 33***91 | Insert, Valve Seat, Intake O/S Stage 2/Tier2 | 0 |
| 33***92 | Insert, Valve Seat, Exhaust Std | 2 |
Z27-1-1 Cylinder Head, Dc9
| 33***85 | Head, Cylinder | 1 |
| 33***86 | Head, Cylinder, P/Ex | 1 |
| 33***87 | Head, Cylinder | 1 |
Z29-1-10 Oil Cooler, Dc12 59a
| SC***98 | Gasket | 1 |
| SC***18 | Gasket | 1 |
| SC***21 | Bolt, M8x40, Flange Screw | 10 |
Z29-1-1 Oil Cooler, Dc9
| 33***37 | Cooler, Oil | 1 |
| 33***38 | Adapter | 1 |
| SC***98 | Gasket | 1 |
Z29-1-20 Oil Cooler, Dc16
| 33***76 | Cover, Plate | 1 |
| SC***33 | Cooler, Oil | 1 |
| SC***77 | Cover | 1 |
Z30-1-20 Oil Level Dipstick, & Tube, Dc16
| SC***91 | Pipe | 1 |
| SC***47 | Adapter, Union, Straight | 1 |
| SC***26 | Flange Pipe | 1 |
Z30-1-1 Dipstick, Assembly, Dc9
| 33***30 | Dipstick | 1 |
| 33***31 | Dipstick | 1 |
| 33***32 | Pipe | 1 |
Z30-1-10 Oil Level Dipstick, & Tube, Dc12
| SC***24 | Ferrule | 1 |
| SC***48 | Dipstick | 1 |
| SC***37 | Clip | 1 |
Z31-2-1 Pump, Oil, Sump Extraction
| 33***58 | Pump, Sump Oil Extraction | 1 |
| 33***59 | Bracket, Oil Pump Support | 1 |
| 33***60 | Hose, Oil Extraction Pump | 1 |
Z31-1-20 Oil Sump, Dc16
| 33***59 | Sump, Oil | 1 |
| 33***60 | Kit-Gasket | 1 |
| 33***61 | Screw, Flange | 26 |
Z31-1-10 Oil Sump, Dc12
| 33***93 | Plate, Cover | 1 |
| SC***14 | Washer, Sealing | 1 |
| SC***22 | Screw, M8 X 60 | 27 |
Z31-1-1 Oil Sump, Dc9
| 33***62 | Plug, Magnetic | 1 |
| 33***23 | Sump, Oil | 1 |
| 33***24 | Gasket | 1 |
Z32-1-20 Oil Pump, Dc16
| SC***25 | Screw, M8 X 60 | 4 |
| SC***19 | Screw, M8 X 30 | 19 |
| SC***19 | O Ring | 2 |
Z32-2-10 Oil, Pressure, Sensor Dc12 59a
| 33***13 | Washer, Sealing | 2 |
| 33***14 | Flange, Mounting | 1 |
| SC***89 | Adapter | 1 |
Z32-1-10 Oil Pump, Dc12
| SC***43 | Pipe | 1 |
| SC***22 | Screw, M8 X 60 | 4 |
| SC***46 | Pipe | 1 |
Z32-1-1 Oil Pump, Dc9
| 33***34 | Pump, Oil | 1 |
| 33***35 | Pipe, Suction | 1 |
| 33***36 | Tube | 1 |
Z33-1-20 Flywheel, Assembly, Dc16
| 33***70 | Flywheel, Assembly | 1 |
| SC***13 | Gear, Flywheel Ring | 1 |
| SC***73 | Screw | 10 |
Z33-1-10 Flywheel Assembly, Dc12
| SC***95 | Bolt, M16 X 90 | 10 |
| SC***88 | Flywheel, Assembly | 1 |
| SC***13 | Gear, Flywheel Ring | 1 |
Z33-1-1 Flywheel, Assembly, Dc9
Z34-1-1 Flywheel, Housing, Dc9
| 33***11 | Housing, Flywheel | 1 |
| 33***12 | Housing, Flywheel | 1 |
| 33***13 | Plate, Timing Gear | 12 |
Z34-1-10 Flywheel Housing, Dc12
| 33***83 | Housing, Flywheel | 1 |
| 33***84 | Insert, Thread | 6 |
| 33***85 | Cover | 1 |
Z34-1-20 Flywheel Housing, Dc16
| 33***58 | Housing, Flywheel | 1 |
| SC***80 | O Ring | 1 |
| SC***83 | Seal, Rear Oil | 1 |
Z35-1-1 Camshaft, & Timing Gears, Dc9
| 33***46 | Camshaft | 1 |
| 33***47 | Camshaft | 1 |
| 33***48 | Bearing | 1 |
Z35-1-20 Camshaft, & Timing Gears, Dc16
| 33***48 | Bearing | 1 |
| 33***71 | Camshaft | 1 |
| 33***72 | Camshaft | 1 |
Z35-1-10 Camshaft, & Timing Gears, Dc12
| 33***48 | Bearing | 2 |
| 33***07 | Camshaft | 1 |
| SC***94 | Gear | 1 |
Z35-10-1 Balance Shaft, Assembly, Dc9
| 33***27 | Frame, Balance Shaft, Assembly | 1 |
| 33***28 | Dowel, 6 X 16 | 2 |
| 33***29 | Plug, Screw M10 X9 | 2 |
Z36-1-10 Timing Case & Covers, Dc12
| SC***67 | Plug | 1 |
| SC***37 | Cover | 1 |
| SC***25 | Screw, M8 X 60 | 2 |
Z36-2-1 Casing, Crankshaft, Damper Dc9
| 33***23 | Cover, Front Assembly | 1 |
| SC***43 | Bolt, M10 X 60mm, Flange Screw | 8 |
| SC***29 | Gasket | 1 |
Z36-2-20 Casing, Vibration Insulator, Dc16
| SC***60 | Gasket | 1 |
| SC***40 | Cover | 1 |
| SC***87 | O Ring | 1 |
Z36-1-20 Timing Case & Covers, Dc16
| SC***64 | Spring | 1 |
| SC***18 | Gasket | 2 |
| SC***10 | Stud, M10 X 50 | 2 |
Z37-1-10 Piston & Con-Rod, Assemblies, Dc12
| 33***94 | Rod, Connecting, Assembly | 6 |
| 33***95 | Bolt, Con-Rod M14 X 70 | 2 |
| 33***96 | Kit-Big End Bearing, Undersize 0.25 | 0 |
Z37-1-1 Piston, Assembly, Dc9
| 33***25 | Piston, All Speed | 5 |
| 33***26 | Piston, Single Speed | 5 |
| SC***29 | Pin, Gudgeon | 1 |
Z37-1-20 Piston & Con-Rod, Assemblies, Dc16
| 33***69 | Kit-Big End Bearing | 1 |
| SC***29 | Pin, Gudgeon | 1 |
| SC***59 | Bush, Small End | 1 |
Z38-1-20 Crankshaft Assembly, Dc16
| SC***16 | Crankshaft | 1 |
| SC***89 | Screw | 12 |
| SC***04 | Gear, Crankshaft | 1 |
Z38-1-10 Crankshaft Assembly, Flywheel & Damper Dc12
| 33***00 | Damper, Crankshaft | 1 |
| 33***01 | Driver | 1 |
| 33***02 | Sleeve, Spacer | 1 |
Z38-1-1 Crankshaft Assembly, Flywheel & Damper Dc9
| 33***94 | Rod, Connecting, Assembly | 5 |
| 33***95 | Bolt, Con-Rod M14 X 70 | 2 |
| 33***96 | Kit-Big End Bearing, Undersize 0.25 | 5 |
Z39-2-1 Oil Filler, Cylinder, Block Dc9 & Dc12
| 33***53 | Seal | 1 |
| 33***54 | Hose | 1 |
| 33***55 | Bracket | 1 |
Z39-1-20 Cylinder Block, Assembly, Dc16
| 33***04 | Bearing, Main Std | 5 |
| 33***05 | Bearing, Main, U/S = 0.25mm | 0 |
| 33***06 | Bearing, Main, U/S = -0.50mm | 0 |
Z39-1-10 Cylinder Block, Assembly, Dc12
| 33***02 | Screw, M18 X 190, To E6285668 | 14 |
| 33***04 | Bearing, Main Std | 7 |
| 33***05 | Bearing, Main, U/S = 0.25mm | 7 |
Z39-1-2 Cylinder Block, Assembly
| 33***01 | Guide | 12 |
| 33***02 | Screw, M18 X 190, To E6285668 | 12 |
| 33***03 | Plug, Core 14mm | 1 |
Z39-1-1 Cylinder Block, Assembly
| 33***98 | Block, Cylinder, Dc9 | 1 |
| 33***01 | Guide | 12 |
| 33***02 | Screw, M18 X 190, To E6285668 | 12 |
Z42-1-10 Engine Mounting, Brackets Dc12
| 33***53 | Bracket, Engine Mounting | 2 |
| 33***54 | Screw | 8 |
| 33***06 | Bracket, Engine Mounting | 2 |
Z42-1-1 Engine Mounting, Brackets Dc9
| 33***48 | Bracket, Engine Mounting, Lh | 1 |
| 33***49 | Bracket, Engine Mounting, Rh | 1 |
| 33***50 | Screw, Flange | 4 |
Z42-1-20 Engine Mounting, Brackets Dc16
| 33***50 | Screw, Flange | 8 |
| 33***53 | Bracket, Engine Mounting | 2 |
| 33***54 | Screw | 8 |
Z43-1-20 Air Filter, Installation, Dc16
| 32***64 | Clip, Overcentre | 5 |
| 32***98 | Cover, Filter End | 1 |
| 32***99 | O Ring | 1 |
Z43-1-1 Air Filter, Assembly, Dc9
| 33***21 | Hose | 1 |
| 33***22 | Pipe | 1 |
| 33***05 | Clamp, 160-180mm | 1 |
Z43-1-10 Air Filter, Dc12
| 33***21 | Hose | 1 |
| 33***22 | Pipe | 1 |
| 33***23 | Bracket | 1 |
Z44-1-1 Air Induction Hoses, Dc9
| 33***21 | Hose | 1 |
| 33***47 | Pipe | 1 |
| SC***32 | Sensor | 1 |
Z44-1-20 Air Induction Hoses, Dc16
| 33***89 | Pipe, Elbow | 1 |
| SC***32 | Sensor | 1 |
| SC***69 | Hose | 1 |
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z45 Exhaust System
Z46-4-20 Fan Guards, Dc16
| 33***08 | Bracket | 1 |
| 33***09 | Washer | 19 |
| SC***63 | Washer | 2 |
Z46-1-10 Radiator, Frame & Components, Dc12
| 33***86 | Screw, M12 X 130 | 4 |
| 33***87 | Washer, Spring | 0 |
| 33***88 | Washer | 0 |
Z46-1-1 Radiator & Fittings, Dc9
| 33***82 | Radiator | 1 |
| 33***83 | Plug | 1 |
| 33***84 | Bush | 2 |
Z46-4-1 Fan Guards, Finger Dc9
| 33***82 | Screw, Flange, M8 X 50 | 1 |
| 33***09 | Washer | 1 |
| 33***70 | Ring, Sealing, 787mm Dia | 1 |
Z46-4-10 Guard, Finger Dc12
| 33***29 | Grille | 2 |
| 33***30 | Bracket | 1 |
| 33***31 | Bracket, L/H | 1 |
Z47-1-1 Radiator, Assembly, Dc9
| 33***82 | Radiator | 1 |
| 33***87 | Washer, Spring | 10 |
| 33***89 | Nut, M12 | 2 |
Z47-3-20 Radiator, Hoses And Pipework, Dc16
| SC***15 | Nut, Lock M10 | 1 |
| SC***81 | Clamp | 1 |
| SC***94 | Gasket | 1 |
Z47-3-10 Radiator, Hoses And Pipework, Dc12
| 33***96 | Washer | 2 |
| 33***33 | Hose, Radiator | 1 |
| 33***34 | Bracket | 1 |
Z47-1-10 Radiator, Assembly, Dc12
| 33***84 | Bush | 1 |
| 33***85 | Clamp | 1 |
| 33***86 | Screw, M12 X 130 | 1 |
Z47-3-1 Radiator, Hoses And Pipework, Dc9
| 33***95 | Hose | 1 |
| 33***96 | Washer | 2 |
| 33***87 | Hose, Radiator | 1 |
Z47-1-20 Cooler Assembly, Dc16
| SC***45 | Tank, Expansion | 1 |
| SC***68 | Cap, Coolant Pressure | 1 |
| SC***67 | Sensor | 1 |
Z48-2-20 Cooler,Air Charge, Installation Dc16
| 33***40 | Bracket | 1 |
| SC***91 | Hose | 3 |
| SC***24 | Clamp, 'V' | 1 |
Z48-2-10 Cooler,Air Charge, Dc12
| 33***93 | Washer, Spring | 0 |
| 33***65 | Ring, Sealing | 4 |
| 33***06 | Bracket | 2 |
Z48-2-1 Cooler,Air Charge, Dc9
| 33***76 | Screw, M8 X 90 | 2 |
| 33***61 | Cooler, Charge Air | 1 |
| 33***62 | Cooler, Charge Air | 1 |
Z48-3-1 Connectors, Charge, Air Cooler Pipes Dc9
| 33***74 | Pipe, Charge Air | 1 |
| 33***75 | Connector, Charge Air Pipe | 1 |
| 33***76 | Screw, M8 X 90 | 2 |
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z49 Charge Air Cooler Hoses
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z50 Low Pressure Fuel System
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z51 Fuel Sediment Filters
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z57 Engine Oil Drain
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z60 Generator Chassis Components
Jcb : G440qx(Jcb Generator) : Z Jcb Generator Set : Z61 Generator Bodywork
Z62-1-1 Generator Alternator, Uci274i
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
Z62-3-1 Generator Alternator, Hc434e
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-6-1 Generator Alternator, Hc534e
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-5-1 Generator Alternator, Hc534d
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-2-1 Generator Alternator, Hc434d
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-4-1 Generator Alternator, Hc434f
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z63-10-1 Kit, Conversion, Can/Usb
| 33***91 | Kit, Can/Usb Converter; Kit Consists Of: Cc/Usb Converter; Usb Cable; Db9 Connector;, Telecontrol Software; Configuration Software | 1 |
Z66-1-10 Battery, Cables, & Isolation Kit
| 33***30 | Kit, Battery Isolator, 1109 | 1 |
| 33***47 | Battery, Cables, Scania Dc12 | 1 |
| 70***67 | Battery, Gel Type | 1 |
Z66-1-1 Battery Cables, Isolator & Bridge
| 33***30 | Kit, Battery Isolator, 1109 | 1 |
| 33***41 | Bridge, Battery, With Isolator Kit | 1 |
| 33***48 | Battery, Cables, Scania Dc9 | 1 |
Z66-1-20 Battery, Cables, & Isolation Kit
| 33***30 | Kit, Battery Isolator, 1109 | 1 |
| 33***32 | Battery, Cables, Scania 500kva | 1 |
| 70***67 | Battery, Gel Type | 1 |
G440QX(JCB GENERATOR) serial number reference
Locate the machine identification plate on the generator frame to confirm the serial number and model designation. Verify applicability with a JCB dealer.
| Prefix | Identifies | Notes |
|---|---|---|
| 01654413- | G440QX update, Scania 50Hz/60Hz generation |
Frequently asked questions
What engine does the JCB G440QX use?
The JCB G440QX uses a Scania DC13-072A six-cylinder diesel engine with an electrical governor.
What is the operating weight of the JCB G440QX?
The operating weight of the JCB G440QX is 4,524 kg.
What model replaced the JCB G440QX?
The sources do not specify a direct successor model for the JCB G440QX.
What G440QX(JCB GENERATOR) owners discuss
What engine powers the JCB G440QX generator, and what are its standby and prime power ratings?
The JCB G440QX uses a Scania DC13-072A 6-cylinder engine with an electrical governor. The standby rating is 464 kVA (371 kW) and the prime rating is 419 kVA (335 kW). The unit delivers 675 amps per phase. These specifications apply to the Scania-powered QX range (275-750 kVA). Ratings vary by configuration and emissions package (Stage IIIA or fuel-optimized variants). Have your dealer verify the exact engine build code for your serial number.
What are the typical physical dimensions and weight of the G440QX generator set?
The G440QX has an operating weight of 4524 kg. The enclosure dimensions are 450 cm (length) x 180 cm (width) x 234 cm (height). The unit includes a 740-liter bunded integrated fuel tank. Dimensions and weight vary by configuration, specifically the counterweight, track shoe (if applicable to mobile variants), and regional emissions package. Verify final transport weights with the OEM spec sheet for the specific serial range.
What are the common electrical and sensor issues reported for this generator series?
Common electrical faults involve the DeepSea 7320 control panel and associated sensors. Diagnostic trouble codes frequently indicate issues with the rail pressure control system, injector drift (specifically Injector 2 MDP trim exceeding calibrated limits), and sensors for intake pressure, temperature, fuel, and oil. Water-in-fuel sensor feedback signal ADC faults are also documented. The AMF (Automatic Mains Failure) high-side driver is prone to open or short circuits. Have your dealer verify the specific DTCs and sensor calibration values.
What engine performance quirks or maintenance concerns are associated with the Scania engine in this unit?
Operators note that exhaust system obstructions (catalytic converter, manifold, muffler) decrease performance and require inspection. Fuel system integrity is critical; clogged fuel filters or blockages in fuel lines and injectors lead to power loss. The engine requires adequate crank speed (minimum 12.4V for 12V systems or 24.8V for 24V systems) to fire reliably, especially in cold weather, due to high compression. Piston ring wear can cause high oil consumption and heavy breathing on newer units. Have your dealer verify the engine serial number against the specific maintenance schedule.
What is the standard control and monitoring configuration for the G440QX?
The standard control panel is the DeepSea 7320. The alternator is a MeccAlte HM335A1. JCB LiveLink remote monitoring is available as standard with 36 months of data time. The unit includes a 630Amp MCB, CE pack, and door stays. Configuration details vary by market and optional finance packages. Verify the exact controller firmware and alternator serial with your dealer.
What are the key serial number ranges and build codes for the G440QX in the parts catalog?
The G440QX is listed under the JCB Generator series with build code the OEM part reference. The specific update serial range is the OEM part reference-. The unit is categorized under the 275-750 kVA Scania Powered QX Range. Other related models in this catalog section include G401X, G441QX, and G500QX, all sharing similar build code structures. Serial applicability is strict; do not assume cross-compatibility with G400X or G440X updates without verifying the specific build code. Have your dealer verify the PIN against the current parts catalog.
What should be checked when buying a used G440QX generator?
Check the 740Ltr bunded integrated fuel tank for leaks or corrosion. Verify the condition of the engine block heater and battery charger. Inspect the weatherproof enclosure for seal integrity and bump protection block damage. Confirm the DeepSea 7320 panel logs for historical fault codes, particularly rail pressure and injector drift. Ensure the Scania DC13-072A engine data plate matches the expected build code (the OEM part reference) and serial range (the OEM part reference-). Have your dealer verify the engine compression and alternator insulation resistance.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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