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Jcb G220Q(JCB GENERATOR)
Maintenance schedule, common problems & OEM parts breakdown
The JCB G220Q is a standby-rated diesel generator set within the QS range, designed for emergency power applications. It utilizes a JCB DieselMaxx six-cylinder turbocharged engine operating at 1500 RPM. The machine weighs approximately 2700 kg and delivers a standby rating of 220 kVA (176 kW) and a prime rating of 200 kVA (160 kW). The QS series includes models from G20QS to G220QS, offering configurations with Mecc Alte alternators and DeepSea control panels. It is part of the broader JCB generator lineup that includes the G144, G175, and G200 models, sharing the same DieselMaxx engine family.
The G220Q matters in the used market due to its long 500-hour service intervals, which reduce downtime compared to competitors with shorter intervals. The DieselMaxx engine is known for low fuel consumption and reliability in prime and standby roles. The QS series offers high power density in a compact footprint, making it suitable for noise-sensitive environments. Its modular design and availability of genuine service kits support long-term operational viability.
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 G220Q(JCB GENERATOR) specifications
Engine
| Model | JCB DieselMaxx 6-Cylinder |
| Configuration | Turbocharged, Electronic Governor |
| Emissions Tier | Tier IIIa (also available in Stage V configurations) |
| Displacement | 4.8 L (based on 4.8-litre engine family) |
| Cylinders | 6 |
| Rated Speed | 1500 RPM |
| Prime Power (Engine Output) | 173.4 kW |
| Standby Power (Engine Output) | 190.7 kW |
Weights
| Operating Weight | 2700 kg |
Dimensions
| Transport Length | 380 cm |
| Transport Width | 114 cm |
| Transport Height | 205 cm |
Performance
| Prime Power Rating | 200 kVA / 160 kW |
| Standby Power Rating | 220 kVA / 176 kW |
| Current per Phase | 316 A |
| Voltage | 400 V (3 Phase) |
| Power Factor | 0.8 (3 Phase) / 1.0 (1 Phase) |
Service capacities (summary)
| Fuel Tank | 360 L (Bunded Integrated) |
| Starting System | Two 110 Ah batteries |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G220Q(JCB GENERATOR) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the G220Q(JCB GENERATOR) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil and hydraulic fluid condition at every 500-hour interval. Use JCB-approved engine oil to prevent sludge formation in the cooling system. Check coolant silicate levels to avoid separation. Inspect fuel filters for water contamination, which is critical for the common-rail injectors. Analyze oil samples for metal particles to detect early bearing wear. Verify battery charger output to prevent starting system failure.
Corrective & Common Repairs
Replace fuel filter elements if the restriction indicator shows blockage. Clean or replace air filter elements to maintain turbocharger efficiency. Inspect drive belts for wear and adjust tension as needed. Check electrical connections for corrosion, especially in the alternator and DeepSea control panel. Replace worn soundproofing material to maintain noise levels. Inspect the bunded fuel tank for leaks or structural damage.
Overhaul & Rebuild Points
At 2000 hours, replace hydraulic oil and clean the tank to prevent valve contamination. Inspect the AVR for brush wear and voltage regulation accuracy. Check engine mounting bolts for tightness to prevent vibration damage. Inspect the turbocharger for shaft play and boot integrity. Calibrate the electronic governor to ensure stable frequency. Replace all filters and fluids to restore factory specifications.
Seasonal & Environment Servicing
In cold climates, verify the engine block heater function and use appropriate coolant freeze protection. Inspect the enclosure for water ingress, especially around the door seals and ventilation louvers. Clean the radiator cooling pack to prevent overheating in dusty environments. Check the battery electrolyte level and clean terminals to prevent corrosion. Ensure the fuel tank vent is clear to prevent condensation. Inspect the soundproofing material for moisture damage.
G220Q(JCB GENERATOR) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 32/925884 | Element, Fuel Filter | Fuel system service | Check fitment → |
| 32/925900 | Filter, Fuel Assembly | Fuel system service | Check fitment → |
| 32/925901 | Head, Fuel Filter | Fuel system service | Check fitment → |
| 32/925902 | Bowl, Fuel Sedimenter, Filter | Fuel system service | Check fitment → |
| 32/925898 | Filter, Fuel Assembly | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
G220Q(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, or low coolant level | Inspect sensor connector for corrosion and verify coolant level |
| P0521 | Engine oil pressure sensor range/performance issue | Failing oil pressure sensor, low oil level, or sensor wiring fault | Verify actual oil pressure with mechanical gauge and check sensor wiring |
| P2047 | DEF/AdBlue injector circuit open (SCR system fault) | Open circuit in reductant injector wiring or faulty injector solenoid | Inspect injector connector and wiring harness for damage or disconnection |
| U0100 | Lost communication with Engine Control Module (ECM) | Loose battery terminals, poor ground straps, or CAN bus network fault | Check battery voltage and clean/tighten all ground connections |
| 101 | Low transmission clutch pressure detected | Low hydraulic fluid, faulty pressure sensor, or transmission pump issue | Check hydraulic fluid level and inspect pressure sensor connections |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
G220Q(JCB GENERATOR) attachments & work tools
Power Generation & Electrical Configurations
The G220QS is a 200 kVA (160 kW) prime-rated diesel generator set, with a standby rating of 220 kVA (176 kW). It utilizes a JCB DieselMaxx 6-cylinder turbocharged engine running at 1500 RPM. The alternator is a MeccAlte ECO38 2SN/4 unit with IP23 protection and AVR voltage regulation. Control options include the DeepSea 4510, 7310, or 8610 panels, with the 8610 supporting synchronisation.
Acoustic Enclosure & Protection
The QS model features a heavy-gauge all-steel acoustic canopy designed for noise-sensitive environments. Standard guarding includes bump protection blocks, door stays, and a hot guard. The unit is CE certified and includes earth leakage protection and a bunded fuel tank.
Fuel System & Storage
The machine is equipped with a 360-litre integrated bunded fuel tank. It includes a 3-way fuel valve and a three-stage fuel filtration system for reliability in extreme conditions. An engine sump pump is provided for oil extraction during maintenance.
Lifting & Positioning
Positioning is facilitated by large fork pockets and a central lifting point. The unit weighs 2700 kg and has dimensions of 380 × 114 × 205 cm. Optional lift points are available for specific transport requirements.
Socket Pack & Output
Standard socket packs include three 32A single-phase outlets, three 32A three-phase outlets, one 63A three-phase outlet, and one 125A three-phase outlet. The unit outputs 316 Amps per phase at 400V. A Schneider 4-pole breaker is included in the electrical configuration.
Telematics & Monitoring
JCB Livelink telematics is available as standard, providing fleet control and data access for 36 months. The system monitors engine status, fuel levels, and operational hours to ensure efficient management.
All G220Q(JCB GENERATOR) assemblies by section
Every catalogued assembly group for the Jcb G220Q(JCB GENERATOR). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Z Generator Sets 100/200 Series
Z0-4-1 Generator Set, G110 100kva, 50hz 380/415v Prime
| 32***29 | Jcb, Generator G110, 100kva | 1 |
Z0-13-1 Generator Set, G220q 200kva, 50hz 400v Prime
| 32***38 | Jcb, Generator G220q, 200kva | 1 |
Z0-11-1 Generator Set, G200r 200kva, 50hz 400v Prime
| 32***36 | Jcb, Generator G200r, 200kva | 1 |
Z0-14-1 Generator Set, G160r
| 32***35 | Jcb, Genertaor Set | 1 |
Z0-1-1 Generator Set, G100 90kva, 50hz 380/415v Prime
| 32***26 | Jcb, Generator G100, 90kva | 1 |
Z0-3-1 Generator Set, G100r 100kva, 50hz 380/415v Prime
| 32***28 | Jcb, Generator G100r, 100kva | 1 |
Z0-7-1 Generator Set, G144 130kva, 50hz 400v Prime
| 32***32 | Jcb, Generator G144, 130kva | 1 |
Z0-10-1 Generator Set, G175q 160kva, 50hz 400v Prime
| 32***35 | Jcb, Generator G175q, 160kva | 1 |
Z0-6-1 Generator Set, G130r 130kva, 50hz 400v Prime
| 32***31 | Jcb, Generator G130r, 130kva | 1 |
Z0-12-1 Generator Set, G220 200kva, 50hz 400v Prime
| 32***37 | Jcb, Generator G220, 200kva | 1 |
Z0-8-1 Generator Set, G144q 130kva, 50hz 400v Prime
| 32***33 | Jcb, Generator G144q, 130kva | 1 |
Z0-2-1 Generator Set, G100q 90kva, 50hz 380/415v Prime
| 32***27 | Jcb, Generator G100q, 90kva | 1 |
Z0-5-1 Generator Set, G110q 100kva, 50hz 380/415v Prime
| 32***30 | Jcb, Generator G110q, 100kva | 1 |
Z0-9-1 Generator Set, G175 160kva, 50hz 400v Prime
| 32***34 | Jcb, Generator G175, 160kva | 1 |
Z1-12-1 Engine Assembly, 620 61101 Dsrag, 147/1500
| 32***83 | Engine, Assembly, 620 Dsrag | 1 |
Z1-1-1 Engine Assembly, 420 61070 Dsrg, 79/1500
| 32***80 | Engine, Assembly, 420 Dsrg | 1 |
Z1-2-1 Engine Assembly, 420 61071 Dsrag, 95/1500
| 32***81 | Engine, Assembly, 420 Dsrag | 1 |
Z1-11-1 Engine Assembly, 620 61100 Dsrg, 116/1500
| 32***82 | Engine Assembly, 620 Dsrg | 1 |
Z1-13-1 Engine Assembly, 634 61102 Dsrag, 182/1500
| 32***84 | Engine, Assembly, 634 Dsrag | 1 |
Z2-1-1 Service Tools
| 89***15 | Tool, Rear Seal Installer | 1 |
| 89***50 | Tool, Front Seal Installer | 1 |
Z4-12-1 Gasket Set Overhaul, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***89 | Kit-Gasket | 1 |
Z4-2-1 Gasket Set, Overhaul, 420 Dsrg/420 Dsrag
| 02***11 | Kit-Gasket, Major Overhaul | 1 |
Z4-11-1 Gasket Set Top, 620 Dsrg/620 Dsrag
| 02***90 | Kit-Gasket, Cylinder Head | 1 |
Z4-1-1 Gasket Set Top, 420 Dsrg/420 Dsrag
| 02***12 | Kit-Gasket, Cylinder Head | 1 |
Z5-11-1 Kit-Engine Overhaul, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***04 | Liner, Cylinder | 6 |
| 02***71 | Piston, Assembly | 6 |
| 02***75 | Bearing, Big-End | 6 |
Z5-1-1 Kit-Engine Overhaul, 420 Dsrg/420 Dsrag
| 02***04 | Liner, Cylinder | 4 |
| 02***71 | Piston, Assembly | 4 |
| 02***75 | Bearing, Big-End | 4 |
Z6-13-1 Filter, Oil, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***01 | Filter, Oil | 1 |
Z6-12-1 Fuel Filter, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***77 | Washer, Sealing | 2 |
| 32***80 | Screw | 2 |
| 32***81 | Washer | 2 |
Z6-11-1 Filter Fuel Sediment, 620 Dsrg/620 Dsrag, 634 Dsrag
| 32***98 | Filter, Fuel Assembly | 1 |
| 32***99 | Element, Fuel Filter | 1 |
Z6-2-1 Fuel Filter, 420 Dsrg/420 Dsrag
| 02***77 | Washer, Sealing | 2 |
| 32***79 | Filter, Fuel | 1 |
| 32***80 | Screw | 1 |
Z6-3-1 Filter, Oil, 420 Dsrg/420 Dsrag
| 02***01 | Filter, Oil | 1 |
Z6-1-1 Filter Fuel Sediment, 420 Dsrg/420 Dsrag
| 32***77 | Filter, Head | 1 |
| 32***78 | Element, Fuel Filter | 1 |
Z8-12-1 Front End Drive, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***18 | Nut | 1 |
| 02***20 | Pulley, Water Pump | 1 |
| 02***24 | Screw, M10x30 | 6 |
Z8-11-1 Crankshaft Pulley, 620 Dsrg/620 Dsrag
| 02***86 | Screw, M8x35 | 6 |
| 02***92 | Screw, M8x25 | 3 |
| 02***38 | Nut | 1 |
Z8-1-1 Crankshaft Pulley, 420 Dsrg/420 Dsrag
| 02***84 | Pulley, V Belt | 1 |
| 02***85 | Nut | 1 |
| 02***86 | Screw, M8x35 | 6 |
Z8-13-1 Crankshaft Pulley, 634 Dsrag
| 02***86 | Screw, M8x35 | 6 |
| 02***92 | Screw, M8x25 | 3 |
| 02***37 | Damper, Crankshaft Vibration | 1 |
Z8-2-1 Front End Drive, 420 Dsrg/420 Dsrag
| 02***39 | Sleeve | 1 |
| 02***40 | Pulley, Water Pump | 1 |
| 02***41 | Screw | 1 |
Z9-11-1 Starter Motor, 620 Dsrg/620 Dsrag, 634 Dsrag
| 71***41 | Kit-Lever, Solenoid Engaging | 1 |
| 71***42 | Kit-Sundry Parts | 1 |
| 71***44 | Motor, Starter | 1 |
Z9-1-1 Starter Motor, 420 Dsrg/420 Dsrag
| 71***41 | Kit-Lever, Solenoid Engaging | 1 |
| 71***42 | Kit-Sundry Parts | 1 |
| 71***44 | Motor, Starter | 1 |
Z9-2-1 Starter Motor, 420 Dsrg/420 Dsrag
| 71***26 | Motor, Starter | 1 |
| 71***27 | Holder, Brush Assembly | 1 |
| 71***28 | Kit-Brush | 1 |
Z9-12-1 Starter Motor, 620 Dsrg/620 Dsrag, 634 Dsrag
| 71***26 | Motor, Starter | 1 |
| 71***27 | Holder, Brush Assembly | 1 |
| 71***28 | Kit-Brush | 1 |
Z10-11-1 Alternator, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***60 | Pulley, Alternator | 1 |
| 71***18 | Alternator, 12v, 65amp; Use Existing Pulley Or Order Item Number 8. This Unit Is Supplied As Standard With Singlegroove Pulley, Application Requires Twin., Alternator, 12v, 65amp | 1 |
| 71***20 | Fan | 1 |
Z10-2-1 Alternator Mountings, 420 Dsrg/420 Dsrag
| 02***27 | Screw | 1 |
| 02***31 | Screw | 1 |
| 02***42 | Nut, M8 | 1 |
Z10-12-1 Alternator Mountings, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***42 | Nut, M8 | 1 |
| 02***49 | Washer | 2 |
| 02***43 | Screw, M8x30 | 2 |
Z10-1-1 Alternator, 420 Dsrg/420 Dsrag
| 71***18 | Alternator, 12v, 65amp; Use Existing Pulley Or Order Item Number 8. This Unit Is Supplied As Standard With Singlegroove Pulley, Application Requires Twin., Alternator, 12v, 65amp | 1 |
| 71***19 | Pulley | 1 |
| 71***20 | Fan | 1 |
Z12-11-1 Fuel Pipework, High Pressure, 620 Dsrg
| 02***21 | Washer, Sealing | 1 |
| 02***56 | Bolt, Banjo | 4 |
| 02***57 | Washer, Sealing | 16 |
Z12-13-2 Fuel Pipework, Low Pressure, 634 Dsrag
| 02***11 | Washer, Sealing | 2 |
| 02***21 | Washer, Sealing | 2 |
| 02***46 | Screw, M8x35 | 1 |
Z12-11-3 Fuel Pipework, High Pressure, 634 Dsrag
| 02***21 | Washer, Sealing | 1 |
| 02***56 | Bolt, Banjo | 4 |
| 02***57 | Washer, Sealing | 16 |
Z12-11-2 Fuel Pipework, High Pressure, 620 Dsrag
| 02***21 | Washer, Sealing | 1 |
| 02***56 | Bolt, Banjo | 4 |
| 02***57 | Washer, Sealing | 16 |
Z12-2-1 Fuel Pipework, Low Pressure, Pre-Filter, 420 Dsrg/420 Dsrag
| 32***39 | Bolt, Banjo M12 | 2 |
| 32***71 | G.A, Ga Fuel Pipes(Hp/Lp), Genset | 0 |
| 32***33 | Ring, Snap | 1 |
Z12-1-1 Fuel Pipework, High Pressure, 420 Dsrg/420 Dsrag
| 32***11 | Clip, F.I.P 2 Way | 4 |
| 32***59 | Pipe, Fuel, Injector 1 & 2, Assembly | 1 |
| 32***60 | Pipe, Fuel Injector 3 & 4, Assembly | 1 |
Z12-13-1 Fuel Pipework, Low Pressure, 620 Dsrg/620 Dsrag
| 02***11 | Washer, Sealing | 2 |
| 02***21 | Washer, Sealing | 2 |
| 02***46 | Screw, M8x35 | 1 |
Z12-12-1 Fuel Pipework, Low Pressure, Pre-Filter, 620 Dsrg/620 Dsrag/634 Dsrag
| 02***27 | Screw | 2 |
| 02***42 | Nut, M8 | 2 |
| 02***38 | Washer, Sealing | 5 |
Z12-3-1 Fuel Pipework, Low Pressure, 420 Dsrg/420 Dsrag
| 02***11 | Washer, Sealing | 2 |
| 02***21 | Washer, Sealing | 1 |
| 02***31 | Screw | 2 |
Z13-14-1 Fuel Injector, 634 61102 Dsrag
| 02***42 | Nut, M8 | 12 |
| 17***00 | Injector, Assembly | 6 |
| 17***01 | Nozzle, Injector | 1 |
Z13-12-1 Fuel Injector, 620 61101 Dsrag, 147/1500
| 02***42 | Nut, M8 | 12 |
| 17***02 | Washer | 6 |
| 17***03 | Ring, Rubber | 6 |
Z13-11-1 Fuel Injector, 620 61100 Dsrg, 116/1500
| 02***42 | Nut, M8 | 12 |
| 17***02 | Washer | 6 |
| 17***03 | Ring, Rubber | 6 |
Z13-1-1 Fuel Injector, 420 61070 Dsrg, 420 61071 Dsrag
| 02***42 | Nut, M8 | 8 |
| 17***00 | Injector, Assembly | 4 |
| 17***01 | Nozzle, Injector | 1 |
Z14-1-1 Fuel Lift Pump, 420 Dsrg/420 Dsrag
| 02***91 | Washer | 2 |
| 02***92 | Screw, M8x25 | 4 |
| 17***00 | Pump, Fuel Lift | 1 |
Z14-11-1 Fuel Lift Pump, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***91 | Washer | 2 |
| 02***92 | Screw, M8x25 | 4 |
| 17***00 | Pump, Fuel Lift | 1 |
Z15-12-1 Fuel Injection Pump, 620 61101 Dsrag, 147/1500
| 02***42 | Nut, M8 | 2 |
| 02***49 | Washer | 3 |
| 02***47 | O Ring | 1 |
Z15-11-1 Fuel Injection Pump, 620 61100 Dsrg, 116/1500
| 02***42 | Nut, M8 | 2 |
| 02***49 | Washer | 3 |
| 02***47 | O Ring | 1 |
Z15-13-1 Fuel Injection Pump, 634 61102 Dsrag, 182/1500
| 02***42 | Nut, M8 | 2 |
| 02***49 | Washer | 3 |
| 02***47 | O Ring | 1 |
Z15-2-1 Fuel Injection Pump, 420 61071 Dsrag, 95/1500
| 02***42 | Nut, M8 | 2 |
| 02***47 | O Ring | 1 |
| 02***48 | Nut | 1 |
Z15-1-1 Fuel Injection Pump, 420 61070 Dsrg, 79/1500
| 02***42 | Nut, M8 | 2 |
| 02***47 | O Ring | 1 |
| 02***48 | Nut | 1 |
Z16-11-1 Water Pump, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***13 | Plug | 2 |
| 02***14 | Washer, Sealing | 2 |
| 02***31 | Screw | 2 |
Z16-1-1 Water Pump, 420 Dsrg/420 Dsrag
| 02***13 | Plug | 2 |
| 02***14 | Washer, Sealing | 2 |
| 02***15 | Pump, Water Assembly | 1 |
Z18-1-1 Thermostat & Housing, 420 Dsrg/420 Dsrag
| 02***13 | Plug | 1 |
| 02***14 | Washer, Sealing | 1 |
| 02***27 | Screw | 1 |
Z18-11-1 Thermostat & Housing, 620 Dsrg/620 Dsrag
| 02***13 | Plug | 1 |
| 02***14 | Washer, Sealing | 1 |
| 02***50 | Screw, M8x50 | 4 |
Z18-12-1 Thermostat & Housing, 634 Dsrag
| 02***50 | Screw, M8x50 | 4 |
| 02***73 | Washer | 4 |
| 02***34 | Gasket | 1 |
Z19-11-1 Rocker Cover, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***14 | Screw | 4 |
| 02***15 | Washer | 4 |
| 02***16 | Washer, Rubber | 4 |
Z19-1-1 Rocker Cover, 420 Dsrg/420 Dsrag
| 02***12 | Cover, Rocker | 1 |
| 02***13 | Gasket | 1 |
| 02***14 | Screw | 4 |
Z20-1-1 Rocker Shaft, 420 Dsrg/420 Dsrag
| 02***87 | Nut | 8 |
| 02***88 | Screw, Adjusting | 8 |
| 02***89 | Plug | 2 |
Z20-11-1 Rocker Shaft, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***87 | Nut | 6 |
| 02***88 | Screw, Adjusting | 6 |
| 02***89 | Plug | 2 |
Z21-11-1 Valves & Push-Rods, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***95 | Rod, Push | 8 |
| 02***96 | Tappet | 8 |
Z21-1-1 Valves & Push-Rods, 420 Dsrg/420 Dsrag
| 02***95 | Rod, Push | 8 |
| 02***96 | Tappet | 8 |
Z22-11-1 Turbocharger, 620 61100 Dsrg, 620 61101 Dsrag
| 02***72 | Gasket | 1 |
| 02***73 | Gasket | 1 |
| 02***74 | Gasket | 1 |
Z22-12-1 Turbocharger, 634 61102 Dsrag
| 02***72 | Gasket | 1 |
| 02***73 | Gasket | 1 |
| 02***74 | Gasket | 1 |
Z22-2-1 Turbocharger, 420 61071 Dsrag, 95/1500
| 02***42 | Nut, M8 | 4 |
| 02***47 | Gasket | 1 |
| 02***62 | Flange | 1 |
Z22-1-1 Turbocharger, 420 61070 Dsrg, 79/1500
| 02***42 | Nut, M8 | 4 |
| 02***47 | Gasket | 1 |
| 02***50 | Turbocharger, 79kw Engine | 1 |
Z23-1-1 Turbo Pipework, 420 Dsrg/420 Dsrag
| 02***19 | Washer, Sealing | 1 |
| 02***21 | Washer, Sealing | 2 |
| 02***48 | Pipe | 1 |
Z23-11-1 Turbo Pipework, 620 Dsrg/620 Dsrag
| 02***19 | Washer, Sealing | 1 |
| 02***52 | Connector | 1 |
| 02***59 | Hose | 1 |
Z23-12-1 Turbo Pipework, 634 Dsrag
| 02***19 | Washer, Sealing | 1 |
| 02***52 | Connector | 1 |
| 02***82 | Screw, M8x20 | 2 |
Z25-11-1 Induction Manifold, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***48 | Screw, M8x60 | 5 |
| 02***51 | Screw, M8x65 | 7 |
| 02***44 | Screw, M8x90 | 2 |
Z25-1-1 Induction Manifold, 420 Dsrg/420 Dsrag
| 02***39 | Gasket | 1 |
| 02***41 | Screw, M8x70 | 8 |
| 02***42 | Screw, M6x25 | 1 |
Z26-1-1 Exhaust Manifold, 420 Dsrg/420 Dsrag
| 02***38 | Screw, M10x100 | 8 |
| 02***40 | Manifold, Exhaust | 1 |
| 02***45 | Manifold, Intake | 4 |
Z26-11-1 Exhaust Manifold, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***46 | Cover | 1 |
| 02***61 | Nut | 12 |
| 02***62 | Stud, M10x100 | 12 |
Z27-11-1 Cylinder Head, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***13 | Plug | 1 |
| 02***14 | Washer, Sealing | 2 |
| 02***25 | Connector | 1 |
Z27-1-1 Cylinder Head, 420 Dsrg/420 Dsrag
| 02***13 | Plug | 1 |
| 02***99 | Cotter | 16 |
| 02***01 | Plate, Spring | 8 |
Z28-1-1 Lifting Brackets, 420 Dsrg/420 Dsrag
| 02***20 | Screw, M10x25 | 4 |
| 02***21 | Plate, Engine Lifting | 2 |
Z28-11-1 Lifting Brackets, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***57 | Nut, M10 | 2 |
| 02***20 | Screw, M10x25 | 2 |
| 02***21 | Plate, Engine Lifting | 2 |
Z29-11-1 Oil Cooler, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***14 | Washer, Sealing | 1 |
| 02***51 | Screw, M8x65 | 1 |
| 02***54 | Clamp | 4 |
Z29-1-1 Oil Cooler, 420 Dsrg/420 Dsrag
| 02***14 | Washer, Sealing | 1 |
| 02***42 | Screw, M6x25 | 1 |
| 02***54 | Clamp | 4 |
Z30-1-1 Oil Level Dipstick, 420 Dsrg/420 Dsrag
| 02***75 | Dipstick | 1 |
Z30-11-1 Oil Level Dipstick, 620 Dsrg/620 Dsrag
| 02***80 | Dipstick | 1 |
Z30-12-1 Oil Level Dipstick, 634 Dsrag
| 02***89 | Dipstick | 1 |
Z31-11-1 Oil Sump, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***18 | Plug | 1 |
| 02***53 | Screw, M8x16 | 1 |
| 02***73 | Washer | 4 |
Z31-1-1 Oil Sump, 420 Dsrg/420 Dsrag
| 02***42 | Nut, M8 | 1 |
| 02***19 | Washer, Sealing | 1 |
| 02***70 | Sump | 1 |
Z32-12-1 Oil Relief Valve, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***82 | Screw, M8x20 | 2 |
| 02***09 | Seat, Valve | 1 |
| 02***12 | Gasket | 1 |
Z32-1-1 Oil Pump, 420 Dsrg/420 Dsrag
| 02***80 | Pump, Oil Assembly | 1 |
| 02***83 | Nut, M10 | 1 |
| 02***84 | Washer | 1 |
Z32-2-1 Oil Relief Valve, 420 Dsrg/420 Dsrag
| 02***82 | Screw, M8x20 | 2 |
| 02***09 | Seat, Valve | 1 |
| 02***10 | Valve, Control | 1 |
Z32-11-1 Oil Pump, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***83 | Nut, M10 | 1 |
| 02***84 | Washer | 1 |
| 02***85 | Gear | 1 |
Z33-1-1 Flywheel Assembly, 420 Dsrg/420 Dsrag
| 02***60 | Flywheel | 1 |
| 02***62 | Gear, Starter Ring | 1 |
| 02***65 | Screw | 8 |
Z33-11-1 Flywheel Assembly, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***60 | Flywheel | 1 |
| 02***62 | Gear, Starter Ring | 1 |
| 02***65 | Screw | 8 |
Z34-11-1 Flywheel Housing, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***13 | Plug | 2 |
| 02***29 | Pin | 2 |
| 02***54 | Seal, Oil | 1 |
Z34-1-1 Flywheel Housing, 420 Dsrg/420 Dsrag
| 02***13 | Plug | 2 |
| 02***29 | Pin | 2 |
| 02***54 | Seal, Oil | 1 |
Z35-11-1 Camshaft/Idler Gear, 620 Dsrg/620 Dsrag, 634 Dsrag
| 02***32 | Shaft | 1 |
| 02***33 | Gear | 1 |
| 02***34 | Bush | 1 |
Z35-1-1 Camshaft/Idler Gear, 420 Dsrg/420 Dsrag
| 02***32 | Shaft | 1 |
| 02***33 | Gear | 1 |
| 02***34 | Bush | 1 |
Z36-11-1 Timing Case & Covers, 620 Dsrg/620 Dsrag
| 02***07 | Plug | 1 |
| 02***26 | Gasket | 1 |
| 02***27 | Screw | 12 |
Z36-1-1 Timing Case & Covers, 420 Dsrg/420 Dsrag
| 02***07 | Plug | 1 |
| 02***26 | Gasket | 1 |
| 02***27 | Screw | 12 |
Z36-12-1 Timing Case & Covers, 634 Dsrag
| 02***07 | Plug | 1 |
| 02***26 | Gasket | 1 |
| 02***27 | Screw | 12 |
Z37-12-1 Piston & Con-Rod, Assemblies, 634 Dsrag
| 02***72 | Kit-Piston Ring | 1 |
| 02***73 | Screw | 2 |
| 02***74 | Bush, Small-End | 1 |
Z37-1-1 Piston & Con-Rod, Assemblies, 420 Dsrg/420 Dsrag
| 02***71 | Piston, Assembly | 4 |
| 02***72 | Kit-Piston Ring | 1 |
| 02***73 | Screw | 2 |
Z37-11-1 Piston & Con-Rod, Assemblies, 620 Dsrg/620 Dsrag
| 02***71 | Piston, Assembly | 4 |
| 02***72 | Kit-Piston Ring | 1 |
| 02***73 | Screw | 2 |
Z38-11-1 Crankshaft Assembly, 620 Dsrg/620 Dsrag
| 02***69 | Key | 1 |
| 02***76 | Kit-Main Bearing | 5 |
| 02***77 | Kit-Thrust Washer | 2 |
Z38-12-1 Crankshaft Assembly, 634 Dsrag
| 02***69 | Key | 1 |
| 02***76 | Kit-Main Bearing | 5 |
| 02***77 | Kit-Thrust Washer | 2 |
Z38-1-1 Crankshaft Assembly, 420 Dsrg/420 Dsrag
| 02***69 | Key | 1 |
| 02***70 | Crankshaft | 1 |
| 02***76 | Kit-Main Bearing | 5 |
Z39-1-1 Cylinder Block, 420 Dsrg/420 Dsrag
| 02***00 | Block, Cylinder Assembly | 1 |
| 02***01 | Bush | 1 |
| 02***02 | Sleeve, Guide | 10 |
Z39-11-1 Cylinder Block, 620 Dsrg/620 Dsrag
| 02***01 | Bush | 6 |
| 02***02 | Sleeve, Guide | 14 |
| 02***03 | Screw | 14 |
Z39-12-1 Cylinder Block, 634 Dsrag
| 02***01 | Bush | 6 |
| 02***02 | Sleeve, Guide | 14 |
| 02***03 | Screw | 14 |
Z43-1-1 Air Filter, Installation
| 32***04 | Valve, Dust | 1 |
| 32***10 | Clip | 3 |
| 32***85 | Filter Aiir Assembly | 1 |
Z43-11-1 Air Filter, Installation
| 32***00 | Band, Mounting | 1 |
| 32***06 | Valve, Dust | 1 |
| 32***07 | Clip | 1 |
Z45-11-1 Exhaust System, Canopy Build
| 02***79 | Gasket | 1 |
| 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 | 4 |
| 13***7D | Capscrew | 6 |
Z45-1-1 Exhaust Silencer, Open Build
| 02***79 | Gasket | 1 |
| 13***7D | Capscrew | 6 |
| 32***60 | Pipe, Exhaust Outlet Elbow | 1 |
Z46-11-1 Radiator & Fittings, 620dsrg
| 13***5D | Setscrew, M6 X 20mm Long | 0 |
| 13***3D | Nut, M6 Lock | 0 |
| 14***6D | Washer, M6 Plain | 0 |
Z47-12-1 Cooler Assembly, 634dsrag
| 30***85 | Cap, Radiator Pressure | 1 |
| 30***05 | Guard, Fan, Left Hand | 1 |
| 30***06 | Guard, Fan, Right Hand | 1 |
Z47-11-1 Cooler Assembly, 620dsrag
| 13***5D | Setscrew, M6 X 20mm Long | 24 |
| 13***7D | Setscrew, M8x25 | 4 |
| 13***3D | Nut, M6 Lock | 24 |
Z48-11-1 Radiator, Hose & Pipework, 620dsrg
| 30***79 | Clip | 1 |
| 30***93 | Clip | 4 |
| 30***94 | Clip, 40 - 60 | 3 |
Z48-21-1 Radiator, Coolant Drain
| 32***70 | Valve, 1/2"Bsp Female, 1/2"Bsp Male | 1 |
| 32***71 | Adapter, 1/2"Bsp M 1/2"Tail | 1 |
| 32***72 | Hose, Fuel 1/2"Bore | 1 |
Z48-13-1 Radiator/Cooler, Hose & Pipework, 634dsrag
| 30***79 | Clip | 1 |
| 30***93 | Clip | 4 |
| 30***94 | Clip, 40 - 60 | 3 |
Z48-12-1 Radiator/Cooler, Hose & Pipework, 620dsrag
| 30***79 | Clip | 1 |
| 30***93 | Clip | 4 |
| 30***94 | Clip, 40 - 60 | 3 |
Z49-1-1 Cooling Fan & Spacer
| 32***23 | Fan Cooling | 1 |
Z49-3-1 Cooling Fan & Spacer
| 32***57 | Fan Cooling | 1 |
Z49-2-1 Cooling Fan & Spacer
| 32***52 | Fan Cooling | 1 |
Z50-1-1 Fuel Pipes, Fuel Tank To Filter
| 32***16 | Hose, Fuel Supply | 2 |
| 32***68 | Clip, 6mm Hose | 4 |
| 32***75 | Adapter, 3/8" Bsp F 3/8" Tail | 1 |
Z51-11-1 Fuel Filter, Sediment ( Racor )
| 32***11 | Filter, Fuel, Assembly | 1 |
| 32***12 | Element, Fuel Filter | 1 |
| 32***41 | O Ring | 1 |
Z57-1-1 Engine Oil Drain
| 14***19 | Seal, Dowty | 1 |
| 22***03 | Clip, Jubilee | 2 |
| 32***71 | Adapter, 1/2"Bsp M 1/2"Tail | 2 |
Z60-1-1 Base & Fittings
| 13***8D | Setscrew, M12 X 30 | 0 |
| 13***3D | Nut, M12 | 0 |
| 14***9D | Washer, M12 | 0 |
Z60-5-1 Lifting Bracket, (Optional)
| 13***2D | Setscrew, M16 X 50mm | 8 |
| 13***3D | Nut, M16 | 8 |
| 14***1D | Washer, M16 | 16 |
Z60-11-1 Fuel Tank
| 32***18 | Cap, Fuel Tank | 1 |
| 32***32 | Guage Fuel | 1 |
| 32***77 | Plug, 1.5"Bsp | 5 |
Z60-2-1 Base & Fittings
| 13***8D | Setscrew, M12 X 30 | 0 |
| 13***3D | Nut, M12 | 0 |
| 14***9D | Washer, M12 | 0 |
Z61-3-1 Canopy, Front Section
| 13***5D | Setscrew, M8x20 | 12 |
| 14***7D | Washer, M8 Plain | 12 |
| 14***7D | Washer, M8 Spring | 12 |
Z61-2-1 Canopy, Middle Section
| 13***5D | Setscrew, M8x20 | 84 |
| 14***7D | Washer, M8 Plain | 84 |
| 14***7D | Washer, M8 Spring | 84 |
Z61-1-1 Canopy Assembly
| 32***80 | Canopy, Assembly | 1 |
| 32***81 | Canopy, Middle Section | 1 |
| 32***82 | Canopy, Front Section | 1 |
Z61-4-1 Canopy, Rear Section
| 13***5D | Setscrew, M8x20 | 20 |
| 14***7D | Washer, M8 Plain | 20 |
| 14***7D | Washer, M8 Spring | 20 |
Z61-21-1 Canopy Soundproofing
| 32***39 | Kit-Panel, Soundproofing, Middle Section | 1 |
| 32***40 | Kit-Panel, Soundproofing, Front Section | 1 |
| 32***41 | Kit-Panel, Foil Backed, Rear Section | 1 |
Z62-11-1 Alternator, Accessories
| 13***5D | Setscrew, M6 X 20mm Long | 6 |
| 13***3D | Nut, M6 Lock | 6 |
| 14***6D | Washer, M6 Plain | 12 |
Z62-3-1 Alternator, Uci 274f-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z62-5-1 Alternator, Uci 274 F16
| 32***07 | Kit, Rectifier | 1 |
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***09 | Bearing, Nde | 1 |
Z62-1-1 Alternator, Uci 274c-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z62-4-1 Alternator, Uci 274h-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z62-6-1 Alternator, Uci 274 H16
| 32***07 | Kit, Rectifier | 1 |
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***09 | Bearing, Nde | 1 |
Z62-2-1 Alternator, Uci 274e-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z63-12-1 Control Unit, Box & Panel Assemblies
| 13***3D | Setscrew | 4 |
| 13***5D | Setscrew, M6 X 20mm Long | 4 |
| 14***6D | Washer, M6 Plain | 8 |
Z63-1-1 Control Box & Panel, Assemblies
| 13***1D | Screw, Set M6x12 | 2 |
| 13***5D | Setscrew, M8x20 | 8 |
| 14***6D | Washer, M6 Plain | 2 |
Z64-12-1 Circuit, Breaker, Box Assembly
| 13***5D | Setscrew, M6 X 20mm Long | 86 |
| 13***5D | Setscrew, M8x20 | 37 |
| 14***6D | Washer, M6 Plain | 86 |
Z64-1-1 Circuit Breaker Box, Assembly
| 13***5D | Setscrew, M6 X 20mm Long | 12 |
| 13***0D | Screw, Set | 2 |
| 13***5D | Setscrew, M8x20 | 18 |
Z64-11-1 Circuit, Breaker, Box Assembly
| 13***5D | Setscrew, M6 X 20mm Long | 86 |
| 13***5D | Setscrew, M8x20 | 37 |
| 14***6D | Washer, M6 Plain | 86 |
Z65-11-1 Battery Installation
| 13***0D | Setscrew, M10 X 40mm | 4 |
| 13***3D | Nut, Self Lock M10 | 4 |
| 14***8D | Washer, M10 | 8 |
Z65-2-1 Engine Speed Sensor
| 32***15 | Sensor Magnetic Pick | 1 |
Z65-1-1 Engine Electrics
| 13***8D | Setscrew, M10 X 30 | 2 |
| 14***8D | Washer, M10 | 2 |
| 14***8D | Washer, Spring, M10 | 2 |
Frequently asked questions
What engine does the G220Q use?
The G220Q uses a JCB DieselMaxx six-cylinder turbocharged engine operating at 1500 RPM.
What is the operating weight of the G220Q?
The operating weight is approximately 2700 kg.
What replaced the G220Q?
The G220Q is part of the QS range, which includes models up to G220QS. There is no specific successor model mentioned in the sources; the QS range continues to be supported with service kits and parts.
What G220Q(JCB GENERATOR) owners discuss
What engine powers the JCB G220Q generator set, and what are its key mechanical features?
The JCB G220Q uses a JCB DieselMaxx 6-cylinder turbocharged engine with an electronic governor, operating at 1500 RPM. The engine is available in Tier IIIa emissions compliant configurations and includes a cooling pack, air filter, low oil pressure sender, and coolant temperature sender. It does not use a mechanical governor.
What are the power ratings and electrical specifications for the G220Q?
The G220Q has a Prime power rating of 200 kVA (160 kW) and a Standby power rating of 220 kVA (176 kW). It outputs 316 Amps per phase at 50Hz 3 Phase 400V. The alternator is a MeccAlte ECO38 2SN/4, which is a 4-pole, IP23 protected unit with AVR voltage regulation.
What are the common electrical or starting issues associated with JCB machinery engines?
Starting problems are the most common reason owners contact support. JCB 444 engines rely on glow plugs for cold starting; a failed glow plug relay or timer can prevent firing in cold weather. Owners should verify that glow plugs receive power and heat correctly. Additionally, check the inhibitor switch (forward/reverse microswitches) which activates hydraulic solenoids; a bridged wire or faulty switch can prevent starting or cause intermittent operation.
What are the physical dimensions and weight of the G220Q generator set?
The G220Q weighs 2700 kg with dimensions of 380 cm in length, 114 cm in width, and 205 cm in height. It features a 360Ltr bunded integrated fuel tank.
What standard equipment and safety features are included with the G220Q?
Standard equipment includes a DeepSea 4510 controller, JCB LiveLink (with 36 months data time), battery charger, engine block heater, weatherproof enclosure, 320Amp MCB, CE pack, forklift pockets, central lifting point, door stays, and bump protection blocks. It also includes a 3-way fuel valve, battery isolator, and two 12V JCB batteries.
What maintenance intervals and warranty coverage apply to the G220Q?
The G220Q comes with a warranty of 3 years or 8800 hours. Routine maintenance covers engine oil, cooling system, hydraulic system, and fuel filters. The operator’s manual covers installation, routine maintenance, and engine care and safety.
What should be checked when buying a used G220Q generator?
Verify the engine serial number and emissions tier (Tier IIIa or later). Check the DeepSea controller for fault codes. Inspect the alternator (MeccAlte ECO38 2SN/4) for wear. Ensure the 360Ltr bunded fuel tank is intact and leak-free. Test the engine block heater and battery charger functionality. Verify the condition of the 320Amp MCB and CE pack components. Check for any modifications to the wiring loom, as JCB machinery often uses distinct white wiring that may be altered.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Jcb G220Q(JCB GENERATOR). Related factory variants of the same model family:
G220Q(JCB GENERATOR)G220Q(JCB GENERATOR)
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