Jcb G115QX(JCB GENERATOR)
Maintenance schedule, common problems & OEM parts breakdown
The JCB G115QX is a medium-duty industrial diesel generator set designed for primary and standby power applications. It delivers 86.2 kW (107.7 kVA) of continuous power and 96 kW (119 kVA) of emergency power. The unit is powered by the JCB Dieselmax 444 engine, a 4.4-liter, four-cylinder inline diesel producing 1500 rpm. Operating weight ranges from 1975 kg depending on the configuration, which includes open frame, soundproof canopy, skid-mounted, or containerized enclosures. Production years for this specific model configuration span from approximately 2009 onward, covered under operator manual publication the OEM part reference for serial numbers the OEM part reference and onwards. It serves as a high-output alternative to the G100RX and is succeeded by larger capacity units in the G130 series.
Across its generation, the G115QX transitioned from earlier Deutz and Sisu engine options to the proprietary JCB Dieselmax platform, improving fuel efficiency and service intervals. The machine remains relevant in the used market due to its robust Dieselmax powertrain, which avoids complex emissions aftertreatment systems found in newer Tier 4/Stage V engines, simplifying long-term maintenance. The availability of standardized JCB parts and the machine's compact footprint for its power output make it a staple for construction sites, temporary event power, and remote industrial facilities.
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 G115QX(JCB GENERATOR) specifications
Engine
| Model | JCB Dieselmax 444 (4-cylinder inline) |
| Displacement | 4.399 L (268.4 cu in) |
| Emissions Tier | Tier IIIa |
| RPM | 1500 rpm |
Weights
| Operating Weight | 1975 kg (4354 lb) |
Dimensions
| Transport Length | 2750 mm (9 ft 0 in) |
| Transport Width | 1100 mm (3 ft 7 in) |
| Transport Height | 1760 mm (5 ft 9 in) |
Performance
| Standby Power | 107.7 kVA / 86.2 kW |
| Prime Power | 105 kVA / 84 kW |
| Fuel Consumption (100% load) | 24.1 L/h (6.37 gal/h) |
| Fuel Consumption (75% load) | 18.6 L/h (4.91 gal/h) |
| Noise Level | 66 dB(A) @ 7m |
Service capacities (summary)
| Fuel Tank Capacity | 288 L (76.1 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G115QX(JCB GENERATOR) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the G115QX(JCB GENERATOR) beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor engine oil, hydraulic oil, and coolant samples at every 500-hour interval to establish baseline wear patterns. Check the hydraulic return filter magnet for metallic debris during the 500-hour service. Inspect the fuel separator for water accumulation daily. Use JCB-spec long-life coolant and replace it at 1000 hours to prevent corrosion in the Dieselmax 444 cooling passages. Verify battery specific gravity and terminal tightness to prevent starting failures in automatic mode.
Corrective & Common Repairs
Address fuel system issues by replacing primary and secondary filters at 250-hour intervals to protect the Dieselmax common-rail injectors. Inspect the turbocharger boot and wastegate function during the 500-hour service for air leaks that reduce power. Check alternator brushes and slip rings for wear during the 1000-hour audit. Tighten exhaust manifold bolts to prevent heat damage to nearby wiring. Replace drive belts if tension drops below specification to avoid alternator failure.
Overhaul & Rebuild Points
The Dieselmax 444 engine requires valve clearance checks and injector spray pattern verification at the 1000-hour service. Inspect generator bearings for play and measure winding insulation resistance during the 2000-hour deep service. Check engine mounting bolts and rubber isolators for deterioration to prevent vibration damage. Replace the thermostat if cooling performance drops, as it is a non-serviceable item. Rebuild the fuel transfer pump if priming issues persist after filter replacement.
Seasonal & Environment Servicing
In cold climates, verify the coolant freeze point and use appropriate winter-grade fuel to prevent gelling. Inspect the soundproof canopy seals for moisture ingress that could damage the CP1/CP2 control panels. In dusty environments, clean the radiator and charge cooler fins more frequently than the standard 500-hour interval to prevent overheating. Check the automatic transfer switch (ATS) contacts for corrosion in humid or coastal conditions. Ensure the fuel tank vent is clear to prevent vacuum lock during high-load operation.
G115QX(JCB GENERATOR) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 320/04114 | Retainer, Fuel Filter | Fuel system service | Check fitment → |
| 320/07155 | Filter, Fuel - 5 Micron, Self Colour Can | Fuel system service | Check fitment → |
| 32/925705 | Element, Fuel Sediment/Water, 150 Microns | Fuel system service | Check fitment → |
| 32/925694 | Element, Fuel Filter | Fuel system service | Check fitment → |
| 32/925717 | Filter, Fuel Sediment, 30 Micron | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
G115QX(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 | Faulty oil pressure sensor, low oil level, or sensor wiring fault. | Verify actual oil pressure with a mechanical gauge and check sensor wiring. |
| P2047 | DEF/AdBlue injector circuit open (SCR system fault) | Open circuit in the reductant injector wiring or faulty injector. | Inspect the DEF injector harness and connections for damage. |
| U0100 | Lost communication with Engine Control Module (ECM) | Loose battery terminals, poor ground straps, or CAN bus network fault. | Check battery voltage, clean ground points, and inspect CAN bus connectors. |
| P0335 | Crankshaft Position Sensor 'A' Circuit No Signal | Failed crank sensor, damaged wiring, or debris on the sensor tip. | Inspect the crank sensor and its wiring harness for physical damage. |
| P0102 | MAF (Manifold Absolute Flow) Low Voltage Fault | Dirty or faulty MAF sensor, or intake air leak. | Clean the MAF sensor and check for intake air leaks. |
| P0321 | CAN bus message error for engine speed from engine ECU | Intermittent CAN bus connection or sensor signal noise. | Check CAN bus wiring integrity and connector security. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
G115QX(JCB GENERATOR) attachments & work tools
Generator Power & Engine Configuration
The G115QS is a compact diesel generator with a prime power rating of 100 kVA (80 kW) and a standby power rating of 110 kVA (88 kW). It is powered by a JCB Dieselmax 448 engine, a 4.8-litre turbocharged four-cylinder unit delivering a peak torque of 516 Nm at 1500 rpm. The machine is available in 50 Hz and 60 Hz configurations, with the 50 Hz version typically rated at 115 kVA prime power in some dealer literature.
Physical Dimensions & Weight
The unit measures 2,850 mm in length, 1,140 mm in width, and 1,830 mm in height, with an operating weight of 2,140 kg. It features built-in forklift pockets and central lifting eyes to facilitate transport and positioning without additional rigging equipment.
Fuel System & Consumption
The generator utilizes a bundled base fuel tank with a total capacity of 270 litres. At full load, the fuel consumption rate is 18.6 litres per hour. The system includes heavy-duty three-stage fuel filtration to ensure reliability in extreme environments.
Acoustic & Environmental Specifications
The machine is equipped with a residential silencer and sound attenuation material to achieve a noise level of 70 dB(A), making it suitable for noise-sensitive applications. It meets Stage IIIA emission standards for the engine and holds EMC certification for electrical compatibility.
Electrical Output & Control
The system provides three-phase power output with a standard voltage of 400/230 V and adjustable voltage regulation via a Deep Sea Electronics control panel. The panel includes monitoring for voltage, frequency, and operating hours, along with on-board Ethernet and USB connectivity for LiveLink telematics integration.
Standard Features & Guarding
Standard equipment includes a lockable maintenance access door, control panel viewing window, emergency stop button, and a socket box containing one 32A 3-phase and three 32A 1-phase outlets. The unit is constructed with heavy-gauge all-steel canopy for durability and is available in JCB Yellow or Rental White finishes.
All G115QX(JCB GENERATOR) assemblies by section
Every catalogued assembly group for the Jcb G115QX(JCB GENERATOR). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Z Electrical Power Generation, Unit
Z1-1-1 Engine 320/40255, Complete, Tca Turbo 100kw
| 32***55 | Engine, Complete 100kw 12v, Euro 2 11.5"F/W | 1 |
Z1-2-1 Engine 320/40106, Complete, Nat/Aspirated 74kw
| 32***06 | Engine, Assembly 74kw 12v, Tc, Euro 2 11.5" F/W | 1 |
Z2-2-1 Sealant Templates
| 89***49 | Template, Oil Pan Sealant | 1 |
| 89***75 | Template, Sealant, Bedplate To Block | 1 |
| 89***77 | Template, Sealant, Flywheel, Housing To Gearcase | 1 |
Z2-1-1 Service Tools
| 32***20 | Bracket, Engine Lifting | 1 |
| 89***46 | Tool, Fitting, Core Plug | 1 |
| 89***47 | Tool, Crankshaft Turning | 1 |
Z3-1-1 Lubricants Primers, & Sealants
| 32***28 | Sealant, 620 | 0 |
| 32***29 | Lubricant, O Ring, P80 | 0 |
| 32***30 | Sealant, 5900 | 0 |
Z4-1-1 Seal Kit, Rocker Cover
| 32***92 | O Ring, Oil Filler Cap | 1 |
| 32***87 | Cap, Fuel Injector | 4 |
| 32***88 | Cap, Fuel Pipe | 8 |
Z4-2-1 Gasket Set, Top Overhaul
| 32***08 | Gasket, Cylinder Head | 1 |
| 32***33 | Seal, Valve Stem | 16 |
| 32***40 | O Ring | 1 |
Z4-3-1 Gasket Set, Bottom Overhaul
| 32***31 | Sealant, 518 | 1 |
| 32***29 | Seal, Rear Oil | 1 |
| 32***19 | Seal, Front Oil | 1 |
Z4-5-1 Gasket Set, Top Overhaul, Tc
| 32***08 | Gasket, Cylinder Head | 1 |
| 32***33 | Seal, Valve Stem | 16 |
| 32***40 | O Ring | 2 |
Z4-4-1 Seal Kit, Oil Pan
| 32***30 | Sealant, 5900 | 1 |
| 32***50 | O Ring | 2 |
| 32***62 | Seal, Oil-Pick-Up | 1 |
Z5-2-1 Engine, Short, Tc 320/40060
| 32***29 | Seal, Rear Oil | 1 |
| 32***19 | Seal, Front Oil | 1 |
| 32***17 | Kit-Top Gasket, Turbo Engine | 1 |
Z5-6-1 Kit-Engine Overhaul, Standard, Tc
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***11 | Kit-Piston, Standard, Turbo | 4 |
| 32***80 | Kit-Top Gasket, Turbo Engine | 1 |
Z5-4-1 Engine, Long, Tc 320/40081
| 32***32 | Gear, Crankshaft, Assembly | 1 |
| 32***43 | Kit-Gasket, Long Engine, Tc/Tca | 1 |
| 32***03 | Piston, & Con-Rod, Assembly | 1 |
Z5-6-2 Kit-Engine Overhaul, Oversize - 0.50mm, Tc
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***38 | Kit-Piston, Oversize - 0.50mm, Turbocharged | 4 |
| 32***80 | Kit-Top Gasket, Turbo Engine | 1 |
Z5-6-3 Kit-Engine Overhaul, Oversize - 1.00mm, Tc
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***39 | Kit-Piston, Oversize - 1.0mm, Turbocharged | 4 |
| 32***80 | Kit-Top Gasket, Turbo Engine | 1 |
Z6-1-1 Fuel Filter
| 13***5Z | Bolt, Flange Head, M8 X 20 Lg | 1 |
| 21***07 | Pin, Tension | 1 |
| 32***14 | Retainer, Fuel Filter | 1 |
Z6-4-1 Primary Fuel Filter, Element, Cold Climate
| 32***05 | Element, Fuel Sediment/Water, 150 Microns | 1 |
| 32***33 | Seal, O'Ring | 1 |
Z6-2-1 Oil Filter
| 32***33 | Filter, Engine Oil | 1 |
| 32***23 | G.A, Oil Cooler 60kw, Inc Filter/Filler | 1 |
| 32***24 | Cooler, Oil, Inc Filter/Filler | 1 |
Z6-3-1 Primary Fuel Filter
| 13***7Z | Screw, M8 X 25 | 2 |
| 13***7Z | Screw, M12 X 25 | 2 |
| 32***94 | Element, Fuel Filter | 1 |
Z8-12-3 Front End Drive, Accessory, With Cooling Fan
| 32***00 | Hub, Fan Drive, Assembly | 1 |
| 32***03 | Pulley, Cooling Fan 1.25:1, D=133mm | 1 |
| 32***30 | Pulley, Idler, Long | 1 |
Z8-1-1 Crankshaft Pulley
| 32***69 | Bolt, Torx Head Flange, M12 X 65 X 12.9 | 3 |
| 32***43 | Pulley, Crankshaft | 1 |
| 32***01 | Crankshaft, Assembly | 1 |
Z8-12-4 Front End Drive, Accessories, With Cooling Fan
| 32***03 | Pulley, Cooling Fan 1.25:1, D=133mm | 1 |
| 32***41 | Screw, Pan Head, M8 X 20 | 4 |
| 32***50 | Hub, Fan Drive, Assembly 1.375 Ratio | 1 |
Z8-8-1 Front End Drive, Accessory, 79mm Diameter Idler Pulley
| 32***00 | Hub, Fan Drive, Assembly | 1 |
| 32***41 | Screw, Pan Head, M8 X 20 | 1 |
| 32***72 | Pulley, Fan, D=166, Ratio 1:1 | 1 |
Z8-2-1 Autotensioner, Drive Belt
| 13***8Z | Screw, Star Drive, M8 X 30 | 3 |
| 32***84 | Adjuster, Auto-Tension | 1 |
| 32***46 | Adjuster, Autotensioner | 1 |
Z8-3-1 Lower Idler Pulley, 79mm Diameter
| 13***9Z | Bolt, M8 X 35, Flange Reduced Hex | 2 |
| 13***1Z | Bolt, M8 X 45, Flange Reduced Hex | 1 |
| 32***86 | Pulley, Lower Idler, Assembly | 1 |
Z8-3-2 Lower Idler Pulley
| 13***5Z | Bolt, Flange Head, M8 X 65 | 3 |
| 22***62 | Circlip, Internal | 1 |
| 32***22 | Pulley, Idler, D=124mm | 1 |
Z9-1-1 Starter Motor, 12.Volt
| 13***8Z | Screw, Star Drive, M10 X 30 | 3 |
| 32***32 | Motor, Starter 12v, With Earth Stud | 1 |
| 32***52 | Motor, Starter | 1 |
Z10-1-1 Alternator, 12volt - 95amp
| 13***8Z | Screw, Star Drive, M10 X 30 | 1 |
| 13***2Z | Bolt, Star Drive, M10 X 120 | 1 |
| 32***60 | Alternator, 12v-95amp | 1 |
Z11-1-1 Switches & Senders, 12volt
| 17***02 | Seal, Ring | 1 |
| 32***46 | Switch, Oil Pressure | 1 |
| 32***57 | Seal, Bonded | 1 |
Z12-2-1 Fuel Pipework, Low Pressure
| 32***39 | Bolt, Banjo M12 | 2 |
| 32***33 | Ring, Snap | 1 |
| 32***34 | O Ring | 4 |
Z12-1-1 Fuel Pipework, High Pressure
| 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 |
Z12-2-10 Fuel Pipes, Low Pressure, Tca
| 32***39 | Bolt, Banjo M12 | 2 |
| 32***33 | Ring, Snap | 1 |
| 32***34 | O Ring | 4 |
Z12-3-1 Fuel Pipework, Primary Filter
| 32***41 | Pipe, Fuel Filter To Pump | 1 |
| 32***42 | Clip, Pipe, 8/9mm Dia | 1 |
| 32***43 | Clip, Pipe, 9.5/10mm Dia | 1 |
Z13-2-1 Fuel Injector, Tc
| 32***93 | Bolt, Injector Clamp | 4 |
| 32***39 | Clamp, Fuel Injector | 4 |
| 32***24 | Seal, Injector | 1 |
Z13-1-1 Fuel Injector, Tca
| 32***93 | Bolt, Injector Clamp | 4 |
| 32***39 | Clamp, Fuel Injector | 4 |
| 32***24 | Seal, Injector | 1 |
Z14-1-1 Fuel Lift Pump
| 13***7Z | Screw, Star Drive, M8 X 25 | 3 |
| 32***40 | Pump, Fuel Lift | 1 |
| 32***51 | O Ring | 1 |
Z15-1-1 Fuel Injection Pump, 12v - 110kw
| 32***19 | Seal, Injection Pump To Timing Case | 1 |
| 32***64 | Nut, M8 Flange Head | 3 |
| 32***77 | Nut, M14, Fuel Injection Pump Gear | 1 |
Z15-2-1 Fuel Injection Pump, 12v - 74kw
| 32***19 | Seal, Injection Pump To Timing Case | 1 |
| 32***64 | Nut, M8 Flange Head | 3 |
| 32***77 | Nut, M14, Fuel Injection Pump Gear | 1 |
Z15-50-1 Injection Pump, Service Parts
| 32***74 | Kit-Regulator | 1 |
| 32***75 | Kit-Timing Window | 1 |
| 32***76 | Kit-Plug | 1 |
Z16-1-1 Water Pump
| 32***10 | Gasket, Water Pump | 1 |
| 32***14 | Screw, Pan Head, M8 X 25 | 4 |
| 32***42 | Pump, Water, Assembly | 1 |
Z17-1-1 Water Inlet, Connector
| 13***7Z | Screw, Star Drive, M8 X 25 | 4 |
| 32***01 | Gasket, Water Inlet Pipe | 1 |
| 32***47 | Connector, Water Inlet, Assembly | 1 |
Z18-1-1 Thermostat & Housing
| 13***5Z | Screw, Star Drive, M8 X 20 | 3 |
| 32***40 | Housing, Thermostat | 1 |
| 32***43 | Seal, C | 1 |
Z19-11-1 Cover, Injector Seal
| 32***16 | Cover, Injector Seal | 1 |
| 32***17 | Insert, Injector Seal Cover | 4 |
| 32***21 | G.A, Cover.Injector Seal | 1 |
Z19-1-1 Rocker Cover
| 32***90 | Cap, Oil Filler, Assembly | 1 |
| 32***92 | O Ring, Oil Filler Cap | 1 |
| 32***73 | Spring, Ccv Valve | 1 |
Z20-3-1 Rocker Shaft, Assembly
| 13***2Z | Bolt, M8 X 50 | 7 |
| 13***5Z | Bolt, Flange Head, M8 X 65 | 1 |
| 32***23 | Washer, Spring | 4 |
Z21-2-1 Valve Tappets & Push, -Rods
| 32***24 | Tappet, Valve | 8 |
| 32***77 | Rod, Push | 8 |
| 32***05 | Camshaft, Assembly | 1 |
Z22-1-1 Turbocharger, Tc
| 32***07 | Stud, M8 X 75 | 4 |
| 32***08 | Nut, Lock, M8 Special | 4 |
| 32***53 | Gasket, Single, Tc To Manifold | 1 |
Z22-2-1 Turbocharger, Tca
| 32***07 | Stud, M8 X 75 | 4 |
| 32***08 | Nut, Lock, M8 Special | 4 |
| 32***53 | Gasket, Single, Tc To Manifold | 1 |
Z23-1-10 Turbo Pipework
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 2 |
| 13***5Z | Screw, Star Drive, M8 X 20 | 2 |
| 32***51 | O Ring | 2 |
Z23-1-1 Turbo Pipework
| 13***3Z | Screw, M6x16 | 2 |
| 13***5Z | Screw, Star Drive, M8 X 20 | 2 |
| 32***51 | O Ring | 2 |
Z23-2-1 Turbo Crossover Tube
| 32***14 | G.A, Turbo Crossover Tube, Garrett Htt | 1 |
| 32***33 | Tube, Turbo Crossover | 1 |
| 32***36 | Hose, 49.5mm X 55mm | 2 |
Z25-4-1 Induction Manifold, Tca
| 13***7Z | Screw, Star Drive, M8 X 25 | 10 |
| 32***11 | Plate, Blanking, Intake Heater | 1 |
| 32***12 | Gasket, Intake Heater | 1 |
Z26-2-1 Exhaust Manifold, Tc
| 32***00 | Manifold, Exhaust | 1 |
| 32***35 | Gasket, Heatshield | 1 |
| 32***45 | Bolt, M10 X 57 | 8 |
Z27-3-1 Cylinder Head, Assembly
| 14***15 | Washer, Seal; Replaces Khj0891 | 1 |
| 32***03 | Plug, Core, D=40mm | 2 |
| 32***28 | Sealant, 620 | 0 |
Z28-1-1 Brackets, Engine Lifting
| 13***8Z | Screw, Star Drive, M10 X 30 | 4 |
| 32***20 | Bracket, Engine Lifting | 2 |
| 32***39 | Label, Front Lifting Eye | 1 |
Z29-4-1 Oil Cooler
| 13***5Z | Bolt, Flange Head, M8 X 20 Lg | 5 |
| 13***7Z | Bolt, M8 X 25, Flange Reduced Hex | 11 |
| 21***07 | Pin, Tension | 1 |
Z30-1-1 Oil Level Dipstick, & Tube, Short
| 13***5Z | Bolt, Flange Head, M8 X 20 Lg | 1 |
| 32***27 | O Ring | 2 |
| 32***29 | O Ring | 1 |
Z31-1-1 Oil Sump
| 13***3Z | Screw, Star Drive, M8 X 16 | 2 |
| 32***13 | Plug, Oil Drain | 2 |
| 32***50 | O Ring | 2 |
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 |
Z32-1-1 Oil Pump
| 13***2Z | Screw, Star Drive, M8 X 50 | 4 |
| 32***31 | Pump, Engine Oil | 1 |
| 32***20 | Pump, Oil | 1 |
Z33-1-1 Flywheel Assembly, 11.5"Sae J620
| 32***42 | Bolt, M14 X 108mm | 8 |
| 32***72 | Flywheel, Assembly | 1 |
| 32***75 | Hub, Flywheel | 1 |
Z34-1-1 Flywheel Housing, Fh1
| 13***3Z | Screw, Star Drive, M8 X 16 | 2 |
| 13***7Z | Screw, Star Drive, M8 X 25 | 4 |
| 13***2Z | Screw, Star Drive, M8 X 50 | 8 |
Z35-2-1 Camshaft, & Idler Gear, Tc
| 32***30 | Camshaft, Assembly, Tc/Tca | 1 |
| 32***36 | Plug, Idler Gear Blanking, M8 X 18 | 3 |
| 32***06 | Camshaft, Assembly | 1 |
Z36-1-1 Timing Case & Covers, Idler Blanking
| 13***7Z | Screw, Star Drive, M10 X 25 | 2 |
| 13***9Z | Screw, Star Drive, M12 X 35 | 2 |
| 32***25 | Sealant, Loctite 5182 | 0 |
Z37-2-1 Piston & Con-Rod, Assemblies, Tca
| 32***17 | Bush, Small End | 1 |
| 32***40 | Bolt, Con-Rod, M8 X 57 | 2 |
| 32***50 | Circlip | 2 |
Z37-2-1 Piston & Con-Rod, Assemblies, Tc
| 32***17 | Bush, Small End | 1 |
| 32***40 | Bolt, Con-Rod, M8 X 57 | 2 |
| 32***50 | Circlip | 2 |
Z38-5-1 Crankshaft Assembly, 11.5" Flywheel
| 13***1Z | Screw, Star Drive, M10 X 45 | 1 |
| 21***05 | Dowel, Pin | 2 |
| 32***75 | Hub, Flywheel | 1 |
Z39-3-1 Cylinder Block, Assembly, Tca
| 13***5Z | Screw, Star Drive, M8 X 20 | 2 |
| 13***8Z | Bolt, Star Drive, M8 X 80 | 16 |
| 32***01 | Plug, Core, D=25mm | 1 |
Z39-2-1 Cylinder Block, Assembly, Tc
| 13***8Z | Bolt, Star Drive, M8 X 80 | 16 |
| 32***01 | Plug, Core, D=25mm | 1 |
| 32***02 | Plug, Core, D=36mm | 2 |
Z42-1-1 Mountings, Engine & Power Unit
| 13***7Z | Bolt, M12 X 25mm, Reduce Flange Hex | 8 |
| 13***8Z | Bolt, Flange Head, M12 X 30 | 8 |
| 13***0Z | Bolt, Flange Head, M16 X 35 | 2 |
Z43-1-1 Air Filter, Installation
| 13***9Z | Setscrew, M8x35 | 2 |
| 13***7Z | Screw, M10 X 25 | 3 |
| 16***77 | Cap, Rain | 1 |
Z43-2-1 Air Filter, Installation
| 13***8Z | Bolt, M8 X 30, Flange Reduced Hex | 2 |
| 13***7Z | Bolt, M10 X 25, Flange Reduced Hex | 3 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
Z44-2-1 Air Induction Hoses, Turbo
| 16***74 | Adapter, Vacuum Sensor | 1 |
| 22***13 | Clip, Jubilee; Replaces Khj0336 | 1 |
| 22***15 | Clip, Jubilee | 1 |
Z44-1-1 Air Induction Hoses, Turbo
| 16***74 | Adapter, Vacuum Sensor | 1 |
| 22***13 | Clip, Jubilee; Replaces Khj0336 | 1 |
| 22***16 | Clip, Jubilee | 1 |
Z46-1-1 Radiator & Fittings, Mountings
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 17 |
| 13***2Z | Bolt, M8 X 50 | 1 |
| 13***8Z | Bolt, M10 X 30, Flange Reduced Hex | 4 |
Z46-2-1 Fittings & Mountings, Coolers
| 13***9Z | Bolt | 2 |
| 13***2Z | Bolt, M8 X 50 | 1 |
| 13***7Z | Bolt, M10 X 25, Flange Reduced Hex | 4 |
Z46-11-1 Fan Guards
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 6 |
| 32***17 | G.A., Cooling Pack - Na, Canopy | 0 |
| 32***49 | G.A, Cooling Pack - G-Drive | 0 |
Z47-2-1 Fan Guards
| 13***7Z | Screw, M6 X 25mm Long | 25 |
| 32***28 | Guard, Fan, Right Hand | 1 |
| 32***29 | Guard, Fan, Idler Pulley | 1 |
Z47-1-10 Cooling Pack, Assembly
| 16***80 | Cap, 1 Bar Pressure | 1 |
| 22***12 | Clip, Jubilee | 12 |
| 32***32 | Guard, Fan, Assembly, Tca | 1 |
Z47-1-1 Radiator Assembly
| 32***17 | G.A., Cooling Pack - Na, Canopy | 1 |
| 33***38 | Radiator | 1 |
Z48-11-1 Radiator, Coolant Drain
| 22***05 | Clip, Jubilee | 2 |
| 32***32 | G.A, Coolant Drain | 1 |
| 33***18 | Adaptor, Bulkhead | 1 |
Z48-1-1 Radiator, Hose & Pipework
| 22***01 | Clip, Jubilee | 3 |
| 22***12 | Clip, Jubilee | 4 |
| 32***14 | Tank, Coolant Recovery | 1 |
Z49-1-10 Cooling Fan, &, Spacer Tca
| 13***5Z | Bolt, Flange Head, M8 X 65 | 4 |
| 14***7D | Washer, M8 Plain | 4 |
| 32***39 | Fan, Cooling, 24" Pusher | 1 |
Z49-1-1 Cooling Fan & Spacer
| 13***5Z | Bolt, Flange Head, M8 X 65 | 4 |
| 32***94 | Fan, 22" Pusher | 1 |
| 32***19 | G.A., Engine Fan, Canopy | 1 |
Z50-15-1 Primary Fuel Filter, Installation
| 13***7Z | Screw, M8 X 25 | 2 |
| 13***7Z | Screw, M12 X 25 | 2 |
| 32***17 | Filter, Fuel Sediment, 30 Micron | 1 |
Z50-11-1 3-Way Ball Valve
| 13***1Z | Screw | 4 |
| 13***3Z | Nut | 4 |
| 14***15 | Washer, Seal; Replaces Khj0891 | 4 |
Z51-1-1 Primary Fuel Filter
| 32***02 | Ring, Retaining | 1 |
| 32***03 | Seal, Dust | 1 |
| 32***94 | Element, Fuel Filter | 1 |
Z58-2-1 Ccv Filter Outlet, Tca
| 32***53 | Clip | 1 |
| 32***19 | G.A, Ccv Breather Tca | 0 |
| 32***43 | G.A, Ccv Breather Tca | 0 |
Z58-1-1 Ccv Filter Outlet
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 1 |
| 32***19 | G.A., Breather | 1 |
| 33***20 | Hose, Ccv | 1 |
Z60-1-1 Chassis, Canopy Builds, D2
| 33***14 | Frame, Canopy Support, Lower | 1 |
| 33***29 | Clamp | 3 |
| 33***30 | Pipe, End Silencer | 1 |
Z61-1-1 Canopy, Assembly, Rental
| 33***51 | Cover | 2 |
| 33***53 | Dowel, Location | 2 |
| 33***56 | Hinge | 2 |
Z61-2-1 Canopy, Assembly, Standard Range
| 33***51 | Cover | 2 |
| 33***53 | Dowel, Location | 2 |
| 33***56 | Hinge | 6 |
Z62-1-1 Generator Alternator, Uci224e
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***69 | Alternator | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z62-2-1 Generator Alternator, Uci224g
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
| 32***79 | Alternator, Assembly, Uci 224 G16 | 1 |
Z62-3-1 Generator Alternator, Uci274d
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***99 | Kit-Rectifier, Service | 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 |
Z65-22-1 Engine Block Heater, 230/240v
| 32***53 | Washer, Copper Sealing | 1 |
| 32***59 | Element, Engine Block Heater, 230v | 1 |
| 32***60 | Kit-Block Heater, Engine, 230v | 1 |
Z65-2-10 Battery Installation, With Isolator Switch, Tca
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 2 |
| 13***7Z | Bolt, M6 X 25, Flange Head | 2 |
| 13***3Z | Nut | 2 |
Z65-11-3 Oil Pressure Sender
| 14***08 | Seal, Washer | 2 |
| 32***80 | G.A, Oil Pressure Sender | 1 |
| 33***79 | Adapter, Oil Pressure Sender | 1 |
Z65-21-1 Engine Block Heater, 110/120v
| 32***50 | Heater, Cylinder Block, 1000w - 120v Mains | 1 |
| 32***53 | Washer, Copper Sealing | 1 |
| 32***82 | Kit-Heater, Engine Block, 120v | 1 |
Z65-11-5 Electronic Governor
| 13***3Z | Bolt, M6 X 16, Flange Reduced Hex | 1 |
| 32***22 | Sensor, Vr Crankshaft | 1 |
| 32***65 | Plate, Sensor Clamping | 1 |
Z65-11-1 Engine Electrics
| 13***7Z | Bolt, M12 X 25mm, Reduce Flange Hex | 3 |
| 13***3Z | Nut | 2 |
| 13***3Z | Nut, Self Lock, M8 | 1 |
Z65-11-10 Engine Electrics, Tca
| 13***7Z | Bolt, M12 X 25mm, Reduce Flange Hex | 3 |
| 13***3Z | Nut | 2 |
| 13***3Z | Nut, Self Lock, M8 | 1 |
Z65-11-4 Sensor, Oil Temperature
| 32***15 | G.A, Lube Oil Temp Sensor | 1 |
| 33***10 | Harness, Link, Engine Oil Pressure | 1 |
| 33***41 | Switch, Oil Temperature | 1 |
Z65-11-2 Coolant Level Switch
| 32***92 | Switch, Coolant Level | 1 |
| 32***65 | G.A, Coolant Level Switch | 1 |
| 33***09 | Harness, Link, Low Coolant | 1 |
Z66-1-1 Battery
| 33***50 | Battery, Gel Type | 1 |
G115QX(JCB GENERATOR) serial number reference
Locate the machine identification plate on the generator set frame. Confirm the model designation G115QX and verify the serial number falls within the sourced ranges. Confirm applicability with a JCB dealer.
| Prefix | Identifies | Notes |
|---|---|---|
| 01650000-01699999 | Applicability for G115QX (JCB GENERATOR) in the 65 to 140 Range JCB 50Hz and 60Hz generator series. | |
| 1650000 TO 1699999 | Applicability for G115QX (JCB GENERATOR) covered by Operator’s Manual the OEM part reference (Issue 1, Jun 2009). | |
| 1650000 onwards | Applicability for G115QX (JCB GENERATOR) covered by Factory Service & Shop Manual (Part Number 9811-4700-1) schematics and operator manuals. |
Frequently asked questions
What engine does the JCB G115QX use?
The JCB G115QX uses the JCB Dieselmax 444 engine, a 4.4-liter, four-cylinder inline diesel operating at 1500 rpm.
What is the operating weight of the JCB G115QX?
The operating weight is 1975 kg, varying slightly based on the specific configuration (open, canopy, skid, or container).
What model replaced the JCB G115QX?
The G115QX is part of the G60-G115 series covered by manual the OEM part reference. It is succeeded by the G130 series and larger units in the G250-G600 range for higher power demands.
What G115QX(JCB GENERATOR) owners discuss
What engine family powers the JCB G115QX generator set?
Which control panels are standard or optional for the G115QX, and what are their key operational differences?
What are the common electrical or sensor-related faults reported for this generator series?
What are the critical maintenance intervals and fluid specifications for the G115QX engine?
How does the G115QX handle load transfer and automatic start-up?
What specific checks should be performed when buying a used G115QX generator?
What safety-critical issues require dealer verification?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific G115QX(JCB GENERATOR) part?
Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.