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Jcb G330QX(JCB GENERATOR)
Maintenance schedule, common problems & OEM parts breakdown
The JCB G330QX is a prime power diesel generator set within the JCB QX range, rated at 330 kVA at 50 Hz. It utilizes a Scania engine platform, distinct from the Cummins engines found in the G330QS standby variant. The unit is available in open, canopy, and container configurations. Production falls within the 275–600 kVA Scania-powered generation, with serial applicability covering update the OEM part reference for the G330QX model under JCB PartsPlus+ catalog code the OEM part reference.
The G330QX belongs to the Scania-powered QX series, which replaced earlier mechanical injection models with modern electronic control systems for improved fuel efficiency and emissions compliance. This generation matters in the used market because the Scania engine platform offers high torque density and reliability for continuous prime power applications. The QX series distinguishes itself from the QS (Cummins) and QI (Deutz/Sisu) lines, requiring specific Scania-compatible service knowledge and parts for the control panels and engine management systems.
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 G330QX(JCB GENERATOR) specifications
Engine
| Engine Model | Cummins QSL-G5 |
| Cylinders | 6 |
| Governor Type | Electrical |
| Emissions Tier | Tier 4 Final |
Weights
| Operating Weight | 4350 kg (9590 lb) |
Dimensions
| Transport Length | 390 cm (12 ft 10 in) |
| Transport Width | 140 cm (4 ft 7 in) |
| Transport Height | 234 cm (7 ft 8 in) |
Performance
| Standby Power Rating (50 Hz) | 330 kVA / 364 kW |
| Prime Power Rating (50 Hz) | 300 kVA / 240 kW |
| Current Output (per phase) | 475 A |
Service capacities (summary)
| Fuel Tank Capacity | 470 L (124 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G330QX(JCB GENERATOR) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the G330QX(JCB GENERATOR) beyond the schedule
Predictive Maintenance & Fluid Analysis
Baseline fluid analysis is critical for the G330QX Scania engine. Take samples at the 500-hour interval from the engine, hydraulic tank, and final drives. Compare results against the 500-hour baseline at the 1000-hour service to detect early bearing wear or contamination. Monitor coolant silicate levels to prevent separation in the expansion bottle. Use JCB Engine Oil Special or equivalent 15W-40 diesel oil meeting API specifications. Regular oil sampling extends the 500-hour interval safely and prevents catastrophic engine failure.
Corrective & Common Repairs
Common repairs for the G330QX involve the fuel system and electrical components. Replace primary and secondary fuel filters at 500 hours to protect the Scania common-rail injectors. Inspect the hydraulic return filter magnet for metallic debris during every 500-hour service. Check alternator and starter load tests at 1000 hours to prevent electrical failure. Address turbocharger shaft play and wastegate function issues promptly. Ensure the JCB ServiceMaster diagnostic tool is used to clear logged fault codes and verify injector spray patterns.
Overhaul & Rebuild Points
The 2000-hour service marks a major overhaul point for the G330QX. Perform a full hydraulic oil change and tank cleaning. Measure swing ring play using dial indicators on JS-series based generator frames if applicable. Inspect structural welds on the boom, arm, and chassis for cracks or unauthorized repairs. Check brake disc wear and immersed brake condition. Replace all filters and fluids. This interval determines the next five years of reliability; neglecting it often leads to premature component failure requiring full engine or hydraulic pump rebuild.
Seasonal & Environment Servicing
In cold climates, verify coolant freeze protection and use low-temperature compatible engine oil. In dusty environments, check the air filter restriction indicator more frequently than the standard 500-hour interval. Inspect all hoses and cylinder rods for chafing or pinhole seepage during daily walkarounds. Ensure the cab HVAC system is serviced annually, including the cabin filter and A/C pressure check. Protect the control panel from moisture ingress by inspecting seals and gaskets. Regularly clean the radiator and charge cooler to maintain thermal efficiency.
G330QX(JCB GENERATOR) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 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 → |
| SC1471259 | Filter, Fuel | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
G330QX(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 | Check fuel filter condition and fuel supply pressure |
| P0117 | Engine coolant temperature sensor circuit low voltage | Faulty coolant temperature sensor, shorted wiring harness, or poor connector contact | Inspect sensor wiring for damage and verify sensor resistance |
| P0521 | Engine oil pressure sensor range/performance issue | Faulty oil pressure sensor, low oil level, or sensor wiring fault | Verify actual oil pressure with mechanical gauge and check sensor signal |
| P2047 | DEF/AdBlue injector circuit open (SCR system fault) | Open circuit in reductant injector wiring, faulty injector, or depleted DEF tank | Inspect injector connector for corrosion and check DEF fluid level |
| U0100 | Lost communication with Engine Control Module (ECM) | Damaged CAN bus wiring, poor ground connection, or low battery voltage | Check battery voltage, ground straps, and CAN bus continuity |
| P0335 | Crankshaft Position Sensor "A" Circuit No Signal | Failed crank sensor, damaged tone wheel, or open wiring circuit | Inspect sensor gap and wiring integrity; verify sensor output signal |
| P0102 | Torque Reduction MAF Low Voltage Fault | Faulty Mass Air Flow sensor, intake air leak, or sensor circuit short | Inspect intake system for leaks and test MAF sensor signal |
| P0115 | Engine coolant temperature sensor circuit 1 | Sensor failure, air in cooling system, or wiring fault | Bleed cooling system and verify sensor resistance values |
| P0200 | Injector circuit open | Open circuit in injector wiring harness or faulty injector solenoid | Check injector connector pins for damage and measure injector resistance |
| P0261 | Low signal of the injector circuit of the 1st cylinder | Faulty injector 1, shorted wiring, or ECM driver issue | Swap injector with another cylinder to isolate fault and check wiring |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
G330QX(JCB GENERATOR) attachments & work tools
Compact Range Generators
The G330QS is not listed in the Compact Range; the G33QS is the relevant model with 30 kVA prime power and 34 kVA standby power. It uses a JCB 4 Cylinder DIESELMAX or 6 Cylinder DIESELMAX engine. Total fuel capacity is 81 liters.
Mid Range Diesel Generators
The G330QS is listed in the Mid Range with 300 kVA prime power and 330 kVA standby power. It has a total fuel capacity of 449 liters. Engines are sourced from Scania, Cummins, or Volvo.
Rental Range Generators
The RS Range includes models from 18 kVA to 200 kVA prime power. The G60RS H is a hydrogen generator with 100 kVA output. The G150RS V has 150 kVA prime power and 468 liters fuel capacity.
All G330QX(JCB GENERATOR) assemblies by section
Every catalogued assembly group for the Jcb G330QX(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 : G330qx(Jcb Generator) : Z Jcb Generator Set : Z00 Generator Sets
Z1-1-1 Engine, Complete, Dc12 Ems
| 32***94 | Engine, Assembly, Dc12 Ems | 1 |
| SC***10 | Tool, Rear Crank Seal | 1 |
Z1-11-1 Engine, Complete, Dc16 Ems
| 32***97 | Engine, Assembly, Dc16 Ems | 1 |
Z1-2-1 Engine, Complete, Dc12 Ems
| 32***95 | Engine, Assembly, Dc12 Ems | 1 |
Z1-3-1 Engine, Complete, Dc12 Ems
| 32***96 | Engine, Assembly, Dc12 Ems | 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 |
Z4-1-20 Gasket Set, Cylinder Head, Dc16
| SC***83 | Gasket, Manifold, Fuel | 1 |
| SC***61 | Gasket, Fuel Feed | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 1 |
Z4-1-10 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 |
Z4-2-20 Gasket Sets, General, Overhaul Dc16
| 33***60 | Kit-Gasket | 1 |
| 33***84 | Gasket | 1 |
| 33***92 | Ring, Sealing | 4 |
Z4-2-10 Gasket Set, General Overhaul, Dc12
| SC***83 | O Ring | 1 |
| SC***11 | O Ring | 2 |
| SC***85 | O Ring | 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 |
Z5-1-10 Service Kit, Outer, Turbocharger, Dc12
| SC***37 | Gasket | 1 |
| SC***71 | Gasket | 1 |
| SC***85 | Element, Oil Filter | 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 |
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 |
Z6-4-1 Filter, Oil, Centrifugal Dc9
| 33***49 | Head, Filter Unit | 1 |
| 33***50 | Cleaner, Centrifugal Oil, Assembly | 1 |
| 33***51 | Spring | 1 |
Z6-3-20 Filter, Oil, Dc16
| SC***08 | Filter, Oil, Assembly | 1 |
| SC***54 | O Ring | 1 |
| SC***28 | Tube | 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 |
Z6-1-10 Fuel Filter, Dc12
| SC***89 | Head, Filter | 1 |
| SC***04 | Plug | 1 |
| SC***76 | Element, Fuel Filter | 1 |
Z6-1-20 Fuel Filter, Dc16
| SC***57 | Cover, Fuel Feed | 1 |
| SC***59 | Filter, Fuel | 1 |
| SC***58 | Pipe, Fuel Feed | 1 |
Z6-4-10 Filter, Oil, Centrifugal Dc12
| 33***50 | Cleaner, Centrifugal Oil, Assembly | 1 |
| 33***51 | Spring | 1 |
| 33***08 | Element, Oil Filter | 1 |
Z6-2-20 Filter, Water Seperator, Dc16
| SC***02 | Bowl, Fuel Feed | 1 |
| SC***41 | Head, Fuel Filter | 1 |
| SC***40 | Element, Filter, Fuel Feed | 1 |
Z6-1-1 Fuel Filter, Assembly
| 33***11 | Housing, Fuel Filter, Assembly | 1 |
| 33***12 | Bracket | 1 |
| 33***13 | Screw, M8 X 50 | 1 |
Z8-5-1 Fan, Cowling Dc9
| 33***28 | Plate, Fan Cowling | 1 |
| 33***29 | Bracket, Upper | 1 |
| 33***30 | Bracket, Lower | 1 |
Z8-1-10 Front End Drive, Accessories, Fan Belt Dc12
| 33***25 | Adjuster, Belt | 1 |
| 33***26 | Spacer | 2 |
| 33***27 | Pulley, Idler | 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 |
Z8-2-20 Fan, Assembly, 965mm Dc16
| 33***48 | Bearing | 1 |
| 33***41 | Bearing, Assembly | 1 |
| 33***42 | Screw, Flange, M12 X 140 | 4 |
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 |
Z8-2-1 Fan, Pusher 787mm Dc9
| 33***81 | Spacer, L = 106mm | 1 |
| 33***82 | Fan, Pusher 787mm Dia | 1 |
| SC***50 | Screw, Flange | 4 |
Z8-1-1 Front End Drive, Accessories, Fan Belt Dc9
| 33***88 | Washer | 9 |
| 33***76 | Bracket | 1 |
| 33***77 | Idler, Roller | 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 |
Z8-6-10 Drive Belt Guard, Dc12
| 33***06 | Guard, Drive Belt, Upper | 1 |
| 33***07 | Washer | 2 |
| SC***05 | Bracket | 3 |
Z8-5-10 Fan, Cowling Dc12
| 33***93 | Washer, Spring | 3 |
| 33***33 | Seal | 2 |
| 33***16 | Cowling, Fan | 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 |
Z8-3-1 Front End Drive, Accessories, Alternator & Water Pump Dc9
| 33***77 | Idler, Roller | 1 |
| 33***83 | Idler, Roller | 1 |
| 33***84 | Adjuster, Belt | 1 |
Z9-1-1 Starter Motor, Dc9 & Dc12
| SC***26 | Plate, Starter Motor | 1 |
| SC***48 | Relay | 1 |
| SC***11 | Motor, Starter | 1 |
Z9-2-1 Starter Motor, Dc16
| 33***01 | Motor, Starter | 1 |
| SC***23 | Stud | 3 |
| SC***26 | Plate, Starter Motor | 1 |
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 |
Z10-1-10 Alternator, 65amp, Dc12
| 33***40 | Alternator, 65a | 1 |
| 33***41 | Alternator | 1 |
| 33***42 | Kit-Mounting | 4 |
Z11-3-10 Cables, Retainer, Cylinder Head Dc12 59a
| 33***44 | Duct | 1 |
| SC***03 | Screw | 6 |
| SC***69 | Attaching Plate | 1 |
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 |
Z11-2-10 Harnesses, &, Sensors Dc12 59a
| 33***90 | Sensor, Temperature | 1 |
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***54 | Harness | 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 |
Z11-6-1 Injection Equipment, Harnesses, Dc9
| 33***07 | Screw, Self Tapping, M6 X 20 | 2 |
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***99 | Harness | 1 |
Z11-2-20 Harnesses, &, Sensors Dc16
| 33***20 | Sensor, Charge Air Pressure | 1 |
| 33***04 | Cable, Harness | 1 |
| 33***05 | Cable, Harness | 1 |
Z11-5-10 Engine, Cable Installation, Dc12 59a
| 33***13 | Screw, M8 X 50 | 2 |
| 33***45 | Bracket | 1 |
| 33***46 | Duct | 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 |
Z11-1-10 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 |
Z11-4-10 Protection Plates, & Mounting Bracket, Dc12
| SC***74 | Plate, Protective | 1 |
| SC***63 | Bracket | 1 |
| SC***94 | Plate, Protective | 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 |
Z12-1-10 Fuel Pipes, High Pressure, Dc12 59a
| 33***17 | Valve, Overflow | 1 |
| 33***19 | Bolt, Banjo | 6 |
| 33***21 | Clamp | 3 |
Z12-2-1 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 |
Z12-1-20 Fuel Pipes, High Pressure, Dc16
| 33***17 | Valve, Overflow | 1 |
| 33***94 | Seal, Fuel Feed | 1 |
| 33***97 | Pipe, Fuel | 1 |
Z12-2-20 Fuel Return Pipes, Dc16
| 33***17 | Valve, Overflow | 1 |
| SC***77 | Nut | 1 |
| SC***65 | Bolt | 1 |
Z13-1-20 Fuel Injector, Dc16
| SC***64 | O Ring, Injector | 8 |
| SC***73 | Nozzle, Injector, Fuel | 1 |
| SC***39 | Washer, Injector | 8 |
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 |
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 |
Z15-1-1 Fuel Feed Pump, Dc9 & Dc12
| SC***11 | O Ring | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
| SC***09 | Screw | 2 |
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 |
Z16-1-1 Water Pump, Dc9
| 33***78 | Pump, Water | 1 |
| 33***79 | Housing, Water Pump | 1 |
| 33***80 | Ring, Sealing | 1 |
Z17-2-10 Water Bleed Pipe, Dc12 59a
| 33***34 | Bolt, Banjo | 1 |
| 33***35 | Bolt, Banjo | 5 |
| SC***24 | Banjo, Connector | 1 |
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 |
Z17-1-10 Water Inlet, Connector, Dc12 59a
| 33***32 | Bracket | 1 |
| 33***33 | Spacer | 1 |
| SC***86 | Connector, Water Inlet | 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 |
Z18-1-20 Thermostat & Housing, Dc16
| SC***25 | Screw, M8 X 60 | 4 |
| SC***24 | Thermostat, 83 Degrees | 1 |
| SC***25 | Gasket, Thermostat | 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 |
Z19-1-10 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 |
Z19-1-20 Rocker Cover, Dc16
| SC***90 | Cover | 8 |
| SC***06 | Cap, Oil Filler | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 8 |
Z19-2-1 Crankcase, Ventilation, Open Dc9
| 33***56 | Tube, Spacer, L = 10mm | 1 |
| 33***65 | Clamp, Hose | 3 |
| 33***14 | Hose | 1 |
Z19-1-1 Rocker Cover
| 33***82 | Screw, Flange, M8 X 50 | 20 |
| 33***83 | Cover, Rocker | 1 |
| 33***84 | Cover, Rocker | 1 |
Z19-2-10 Breather Tube, Crankcase, Dc12
| SC***20 | Screw | 1 |
| SC***82 | Pipe, Crankcase Breather | 1 |
| SC***32 | Nut, Flange M8 | 2 |
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 |
Z22-1-1 Turbocharger
| 33***59 | Turbocharger | 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 |
Z22-1-20 Turbocharger, Dc16 44a/45a
| 33***86 | Turbocharger | 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 |
Z23-1-10 Turbo Pipework, Dc12
| 33***09 | Bracket | 1 |
| 33***10 | Hose | 1 |
| SC***71 | Gasket | 1 |
Z23-1-20 Turbo Pipework, Dc16
| SC***44 | Adapter | 2 |
| SC***71 | Gasket | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
Z25-1-1 Air Induction, Manifold, Dc9
| 33***46 | Manifold, Induction | 1 |
| SC***31 | Bolt, M8x100, Flange Screw | 20 |
| SC***11 | Seal | 1 |
Z25-1-20 Manifold, Induction, Dc16
| 33***87 | Manifold, Induction | 1 |
| 33***88 | Manifold, Induction | 1 |
| SC***58 | Pipe, Flange | 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 |
Z26-1-20 Manifold, Exhaust, Dc16
| 33***77 | Manifold, Exhaust | 2 |
| 33***78 | Ring, Sealing | 8 |
| 33***79 | Screw, Flange | 16 |
Z26-2-20 Manifold, Exhaust, Heat Shield Dc16
| 33***90 | Shield, Heat | 2 |
| 33***91 | Bracket | 4 |
| SC***13 | Bolt | 4 |
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 |
Z26-1-1 Manifold, Exhaust, Dc9
| 33***41 | Manifold, Turbo Exhaust | 1 |
| 33***42 | Manifold, Exhaust | 1 |
| 33***43 | Gasket | 1 |
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 |
Z27-1-20 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 |
Z27-1-1 Cylinder Head, Dc9
| 33***85 | Head, Cylinder | 1 |
| 33***86 | Head, Cylinder, P/Ex | 1 |
| 33***87 | Head, Cylinder | 1 |
Z29-1-1 Oil Cooler, Dc9
| 33***37 | Cooler, Oil | 1 |
| 33***38 | Adapter | 1 |
| SC***98 | Gasket | 1 |
Z29-1-10 Oil Cooler, Dc12 59a
| SC***98 | Gasket | 1 |
| SC***18 | Gasket | 1 |
| SC***21 | Bolt, M8x40, Flange Screw | 10 |
Z29-1-20 Oil Cooler, Dc16
| 33***76 | Cover, Plate | 1 |
| SC***33 | Cooler, Oil | 1 |
| SC***77 | Cover | 1 |
Z30-1-10 Oil Level Dipstick, & Tube, Dc12
| SC***24 | Ferrule | 1 |
| SC***48 | Dipstick | 1 |
| SC***37 | Clip | 1 |
Z30-1-1 Dipstick, Assembly, Dc9
| 33***30 | Dipstick | 1 |
| 33***31 | Dipstick | 1 |
| 33***32 | Pipe | 1 |
Z30-1-20 Oil Level Dipstick, & Tube, Dc16
| SC***91 | Pipe | 1 |
| SC***47 | Adapter, Union, Straight | 1 |
| SC***26 | Flange Pipe | 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 |
Z31-1-1 Oil Sump, Dc9
| 33***62 | Plug, Magnetic | 1 |
| 33***23 | Sump, Oil | 1 |
| 33***24 | Gasket | 1 |
Z31-1-10 Oil Sump, Dc12
| 33***93 | Plate, Cover | 1 |
| SC***14 | Washer, Sealing | 1 |
| SC***22 | Screw, M8 X 60 | 27 |
Z32-1-1 Oil Pump, Dc9
| 33***34 | Pump, Oil | 1 |
| 33***35 | Pipe, Suction | 1 |
| 33***36 | Tube | 1 |
Z32-2-10 Oil, Pressure, Sensor Dc12 59a
| 33***13 | Washer, Sealing | 2 |
| 33***14 | Flange, Mounting | 1 |
| SC***89 | Adapter | 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 |
Z32-1-10 Oil Pump, Dc12
| SC***43 | Pipe | 1 |
| SC***22 | Screw, M8 X 60 | 4 |
| SC***46 | Pipe | 1 |
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
Z33-1-20 Flywheel, Assembly, Dc16
| 33***70 | Flywheel, Assembly | 1 |
| SC***13 | Gear, Flywheel Ring | 1 |
| SC***73 | Screw | 10 |
Z34-1-20 Flywheel Housing, Dc16
| 33***58 | Housing, Flywheel | 1 |
| SC***80 | O Ring | 1 |
| SC***83 | Seal, Rear Oil | 1 |
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 |
Z35-1-10 Camshaft, & Timing Gears, Dc12
| 33***48 | Bearing | 2 |
| 33***07 | Camshaft | 1 |
| SC***94 | Gear | 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 |
Z35-10-1 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 |
Z36-2-1 Casing, Crankshaft, Damper Dc9
| 33***23 | Cover, Front Assembly | 1 |
| SC***43 | Bolt, M10 X 60mm, Flange Screw | 8 |
| SC***29 | Gasket | 1 |
Z36-1-20 Timing Case & Covers, Dc16
| SC***64 | Spring | 1 |
| SC***18 | Gasket | 2 |
| SC***10 | Stud, M10 X 50 | 2 |
Z36-2-20 Casing, Vibration Insulator, Dc16
| SC***60 | Gasket | 1 |
| SC***40 | Cover | 1 |
| SC***87 | O Ring | 1 |
Z36-1-10 Timing Case & Covers, Dc12
| SC***67 | Plug | 1 |
| SC***37 | Cover | 1 |
| SC***25 | Screw, M8 X 60 | 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 |
Z38-1-10 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 |
Z38-1-20 Crankshaft Assembly, Dc16
| SC***16 | Crankshaft | 1 |
| SC***89 | Screw | 12 |
| SC***04 | Gear, Crankshaft | 1 |
Z39-2-1 Oil Filler, Cylinder, Block Dc9 & Dc12
| 33***53 | Seal | 1 |
| 33***54 | Hose | 1 |
| 33***55 | Bracket | 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 |
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 |
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 |
Z42-1-10 Engine Mounting, Brackets Dc12
| 33***53 | Bracket, Engine Mounting | 2 |
| 33***54 | Screw | 8 |
| 33***06 | Bracket, Engine Mounting | 2 |
Z42-1-20 Engine Mounting, Brackets Dc16
| 33***50 | Screw, Flange | 8 |
| 33***53 | Bracket, Engine Mounting | 2 |
| 33***54 | Screw | 8 |
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 |
Z43-1-20 Air Filter, Installation, Dc16
| 32***64 | Clip, Overcentre | 5 |
| 32***98 | Cover, Filter End | 1 |
| 32***99 | O Ring | 1 |
Z44-1-20 Air Induction Hoses, Dc16
| 33***89 | Pipe, Elbow | 1 |
| SC***32 | Sensor | 1 |
| SC***69 | Hose | 1 |
Z44-1-1 Air Induction Hoses, Dc9
| 33***21 | Hose | 1 |
| 33***47 | Pipe | 1 |
| SC***32 | Sensor | 1 |
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z45 Exhaust System
Z46-1-10 Radiator, Frame & Components, Dc12
| 33***86 | Screw, M12 X 130 | 4 |
| 33***87 | Washer, Spring | 0 |
| 33***88 | Washer | 0 |
Z46-4-20 Fan Guards, Dc16
| 33***08 | Bracket | 1 |
| 33***09 | Washer | 19 |
| SC***63 | Washer | 2 |
Z46-4-10 Guard, Finger Dc12
| 33***29 | Grille | 2 |
| 33***30 | Bracket | 1 |
| 33***31 | Bracket, L/H | 1 |
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 |
Z46-1-1 Radiator & Fittings, Dc9
| 33***82 | Radiator | 1 |
| 33***83 | Plug | 1 |
| 33***84 | Bush | 2 |
Z47-3-10 Radiator, Hoses And Pipework, Dc12
| 33***96 | Washer | 2 |
| 33***33 | Hose, Radiator | 1 |
| 33***34 | Bracket | 1 |
Z47-1-20 Cooler Assembly, Dc16
| SC***45 | Tank, Expansion | 1 |
| SC***68 | Cap, Coolant Pressure | 1 |
| SC***67 | Sensor | 1 |
Z47-1-1 Radiator, Assembly, Dc9
| 33***82 | Radiator | 1 |
| 33***87 | Washer, Spring | 10 |
| 33***89 | Nut, M12 | 2 |
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 |
Z47-3-20 Radiator, Hoses And Pipework, Dc16
| SC***15 | Nut, Lock M10 | 1 |
| SC***81 | Clamp | 1 |
| SC***94 | Gasket | 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 |
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 |
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z49 Charge Air Cooler Hoses
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z50 Low Pressure Fuel System
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z51 Fuel Sediment Filters
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z57 Engine Oil Drain
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z60 Generator Chassis Components
Jcb : G330qx(Jcb Generator) : Z Jcb Generator Set : Z61 Generator Bodywork
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 |
Z62-4-1 Generator Alternator, Hc434f
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
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 |
Z62-5-1 Generator Alternator, Hc534d
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-6-1 Generator Alternator, Hc534e
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 33***24 | Regulator, Voltage, Mx341 Avr | 1 |
Z62-1-1 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 |
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 |
G330QX(JCB GENERATOR) serial number reference
Locate the machine identification plate on the generator frame or canopy. Verify the model designation (G330QX or G331QX) and the serial number prefix to confirm applicability with a JCB dealer.
| Prefix | Identifies | Notes |
|---|---|---|
| 01654409- | G330QX update JCB GENERATOR (Scania engine, 50Hz) — applies to serials starting with 01654409 and above | |
| 01654000- | G331QX JCB GENERATOR (Scania engine, 50Hz) — applies to serials starting with 01654000 and above |
Frequently asked questions
What engine does the G330QX use?
The G330QX uses a Scania engine. It is distinct from the G330QS which uses a Cummins engine.
What is the operating weight of the G330QX?
Operating weight varies by configuration (open, canopy, container). Specific weight data is not documented in the provided sources; verify with the dealer or serial-specific spec sheet.
What model replaced the G330QX?
The G330QX is part of the Scania-powered QX range (275-600 kVA). Specific successor models are not documented in the provided sources; consult JCB Power Products for current lineup replacements.
What G330QX(JCB GENERATOR) owners discuss
What engine powers the JCB G330QX generator set?
The JCB G330QX utilizes a Scania engine. The 275–330 kVA QX range is also associated with Cummins engines in some configurations, but the G330QX specifically is listed under Scania-powered units in the standard range documentation.
What are the common electrical or sensor issues reported for JCB generator sets in this power class?
Common issues involve the Engine Control Module (ECM) requiring software flashes to resolve ghost fault codes. Sensor failures include atmospheric pressure sensors (P2228/P2229), water-in-fuel sensors (P2264/P2265), and MAF sensors (P0101/P0102). Injector drift faults (P029B) and AMF high-side driver faults (P0100) are also documented.
What are the typical powertrain or hydraulic behaviors for JCB equipment of this era?
JCB powertrains often use electrically operated hydraulic solenoids for direction selection (forward/reverse). A common failure mode is the inhibition switch or microswitch failing, causing the machine to rev but not move in one direction. Solenoid coil integrity should be verified with a screwdriver test to check for magnetic attraction.
What undercarriage or wear patterns are typical for JCB heavy equipment?
Undercarriage wear is a primary ownership cost factor. Track shoe width, boom/stick configurations, and attachment packages significantly impact ground pressure and wear rates. Regular inspection of ground-engaging tools and track tension is required to maintain efficiency.
What engine quirks are associated with JCB 444 series engines?
JCB 444 engines are high-compression diesels requiring strong crank speed to fire, particularly in cold weather. Battery voltage must be at least 12.4V (12V system) or 24.8V (24V system). Piston ring wear can lead to high oil consumption and heavy breathing in newer units.
What should be checked when buying a used JCB G330QX generator?
Verify the exact serial number against the PartsPlus+ catalog to confirm the specific engine variant (Scania vs. Cummins) and update level. Check the ECM for active fault codes and ensure the AVR (Automatic Voltage Regulator) is functioning correctly. Inspect the fuel system for blockages and verify the exhaust system for obstructions.
What safety-critical fix is required for the forward/reverse solenoid system?
Ensure the inhibition switch is correctly adjusted and wired to prevent starting in gear. If the solenoid fails to engage, trace the wiring from the starter switch through the fuse block to the solenoid to check for open circuits or short circuits. Have your dealer verify the solenoid operation and wiring integrity.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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