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Jcb G63
Maintenance schedule, common problems & OEM parts breakdown
The JCB G63 is a compact backhoe loader designed for urban and limited-space environments. It features an EcoMAX or Dieselmax engine family, delivering power at low RPMs for fuel efficiency. Operating weight ranges from 13,514 lb (6,130 kg) for the 3CX Compact variant, with configurations including 4-wheel steering and rubber tires. The machine serves as a versatile solution for utility companies, landscapers, and municipalities, offering a full range of attachments to maximize productivity.
The G63 lineage is part of JCB's backhoe loader family, which includes the 3CX and 4CX series. The machine matters in the used and parts market due to its 500-hour engine oil interval, which reduces downtime compared to competitors with shorter intervals. The lack of DEF or DPF requirements on EcoMAX and Dieselmax engines further lowers operating costs. The G63's ground-level daily checks and additive service intervals contribute to its long resale value and low lifetime cost.
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 G63 specifications
Engine
| Model | JCB Diesel by Kohler |
| Gross/Net Power | 74 hp (55 kW) |
| Displacement | Not documented for this exact serial range — verify with your dealer |
| Cylinders | Not documented for this exact serial range — verify with your dealer |
| Emissions Tier | Requires no DEF; no DPF |
Weights
| Operating Weight | 13,514 lb (6,130 kg) |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | Not documented for this exact serial range — verify with your dealer |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Wheelbase or Track Gauge | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speeds | Not documented for this exact serial range — verify with your dealer |
| Lift/Dig/Dump/Drawbar | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G63 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the G63 beyond the schedule
Predictive Maintenance & Fluid Analysis
Collect baseline oil samples from the engine, hydraulic, axle, and final drive systems at the 500-hour interval. Compare future samples against this baseline to detect developing bearing, seal, or contamination issues 500 to 800 hours before failure. Inspect the hydraulic return filter magnet for metallic debris during every 500-hour service. Interpret hydraulic oil samples against the 500-hour baseline to determine if intervals should be extended or compressed. Use JCB-spec long-life coolant and change it at the 1000-hour interval to prevent silicate separation and corrosion.
Corrective & Common Repairs
Address common rail pressure faults and injector drift issues using JCB ServiceMaster diagnostic tools. Check turbocharger shaft play, boot condition, and wastegate function on Dieselmax units during the 1000-hour service. Inspect alternator and starter load to catch dying electrical components. Verify slew ring bolt torque on JS-series excavators as a critical safety item. Replace primary and secondary fuel filters to protect common-rail injectors from dirty fuel, the primary cause of injector failure on EcoMAX and Dieselmax engines.
Overhaul & Rebuild Points
Perform a deep service at the 2000-hour interval, including draining the hydraulic tank, cleaning it, and refilling with JCB-spec hydraulic oil. Inspect structural components such as the boom, arm, loader arm, and chassis for cracking or unauthorized welding. Measure swing ring play using a dial indicator on JS-series excavators. Check injector spray patterns and replace injectors as required. Service disc brakes and check immersed brake condition on backhoes and wheel loaders to ensure safe operation.
Seasonal & Environment Servicing
Use JCB 15W-40 Multigrade oil for temperatures between -10°C to 50°C (14°F to 122°F). For colder conditions, use JCB 10W/30 Multigrade oil down to -15°C (5°F). Check battery electrolyte levels in non-sealed batteries during the 100-hour weekly check. Clean battery terminals to prevent corrosion. Inspect hoses and cylinders for chafing and pinhole seepage, which can be exacerbated by temperature extremes. Ensure the cooling system is flushed and refilled with JCB-spec coolant to maintain proper heat exchange in varying climates.
G63 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 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 → |
| 320/20166 | G.A, Fuel Filter & Lp Pipes Na & Tc, Genset | Fuel system service | Check fitment → |
| 320/04114 | Retainer, Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
G63 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| P0087 | Fuel rail/system pressure too low | Fuel filter blockage, lift pump failure, or restricted fuel line | Check fuel filter condition and fuel pump operation |
| P0117 | Engine coolant temperature sensor circuit low voltage | Faulty coolant temperature sensor, shorted wiring harness, or poor ground connection | Inspect sensor wiring for damage and check connector pins for corrosion |
| P0521 | Engine oil pressure sensor range/performance issue | Faulty oil pressure sensor, low oil level, or sensor circuit fault | Verify oil level and inspect sensor electrical connections |
| P2047 | DEF/AdBlue injector circuit open (SCR system fault) | Open circuit in reductant injector wiring or faulty injector solenoid | Inspect injector wiring harness and connector for damage or corrosion |
| U0100 | Lost communication with Engine Control Module (ECM) | CAN bus network fault, loose connector, or ECM power/ground issue | Check battery voltage, ground straps, and CAN bus wiring integrity |
| 101 | Low transmission clutch pressure detected | Transmission hydraulic leak, faulty pressure sensor, or low transmission fluid | Check transmission fluid level and inspect hydraulic lines for leaks |
| P0335 | Crankshaft Position Sensor "A" Circuit (No Signal) | Faulty crank sensor, damaged wiring, or sensor gap issue | Inspect crank sensor wiring and connector; verify sensor operation |
| P0112 | Intake air temperature sensor malfunction (low voltage error) | Short to ground in intake air temperature sensor circuit | Inspect sensor wiring for short circuits and check connector pins |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
All G63 assemblies by section
Every catalogued assembly group for the Jcb G63. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Z Electrical Power Generation, Unit
Z0-3-1 Generator Set, G55q 50kva, 50hz 380/415v Prime
| 32***20 | Jcb, Generator G55q, 50kva | 1 |
Z0-7-1 Generator Set, G88 80kva, 50hz 380/415v Prime
| 32***24 | Jcb, Generator G88q, 80kva | 1 |
Z0-5-1 Generator Set, G63q 60kva, 50hz 380/415v Prime
| 32***22 | Jcb, Generator G63q, 60kva | 1 |
Z0-1-1 Generator Set, G50r 50kva, 50hz 380/415v Prime
| 32***18 | Jcb, Generator G50r, 50kva | 1 |
Z0-8-1 Generator Set, G88q 80kva, 50hz 380/415v Prime
| 32***25 | Jcb, Generator G88q, 80kva | 1 |
Z0-6-1 Generator Set, G80r 80kva, 50hz 380/415v Prime
| 32***23 | Jcb, Generator G80r, 80kva | 1 |
Z0-2-1 Generator Set, G55 50kva, 50hz 380/415v Prime
| 32***19 | Jcb, Generator G55, 50kva | 1 |
Z0-4-1 Generator Set, G63 60kva, 50hz 380/415v Prime
| 32***21 | Jcb, Generator G63, 60kva | 1 |
Z1-2-1 Engine, Complete, 320/50015
| 32***60 | G.A, Power Take-Off Blanking Plate, Sae | 1 |
| 32***20 | Fan, Idler Bracket, No Aircon 1.16+1.25 | 1 |
| 32***23 | G.A, Engine Dipstick | 1 |
Z1-1-1 Engine, Complete, 320/50014
| 32***60 | G.A, Power Take-Off Blanking Plate, Sae | 1 |
| 32***20 | Fan, Idler Bracket, No Aircon 1.16+1.25 | 1 |
| 32***23 | G.A, Engine Dipstick | 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 |
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 |
Z3-1-1 Lubricants Primers, & Sealants
| 32***28 | Sealant, 620 | 0 |
| 32***29 | Lubricant, O Ring, P80 | 0 |
| 32***30 | Sealant, 5900 | 0 |
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 |
Z4-3-1 Gasket Set, Bottom Overhaul
| 32***31 | Sealant, 518 | 1 |
| 32***29 | Seal, Rear Oil | 1 |
| 32***19 | Seal, Front Oil | 1 |
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 |
Z4-4-1 Seal Kit, Oil Pan
| 32***30 | Sealant, 5900 | 1 |
| 32***50 | O Ring | 2 |
| 32***62 | Seal, Oil-Pick-Up | 1 |
Z5-5-2 Kit-Engine Overhaul, Oversize - 0.50mm
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***16 | Kit-Top Gasket, Naturally Aspirated | 1 |
| 32***18 | Kit-Bottom Gasket | 1 |
Z5-5-3 Kit-Engine Overhaul, Oversize - 1.00mm
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***16 | Kit-Top Gasket, Naturally Aspirated | 1 |
| 32***18 | Kit-Bottom Gasket | 1 |
Z5-5-1 Kit-Engine Overhaul, Standard
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***10 | Kit-Piston, Standard, Naturally Aspirated | 4 |
| 32***16 | Kit-Top Gasket, Naturally Aspirated | 1 |
Z5-1-1 Engine, Short, 320/40059
| 32***29 | Seal, Rear Oil | 1 |
| 32***19 | Seal, Front Oil | 1 |
| 32***16 | Kit-Top Gasket, Naturally Aspirated | 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 |
Z5-2-1 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***17 | 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***17 | Kit-Top Gasket, Turbo Engine | 1 |
| 32***18 | Kit-Bottom Gasket | 1 |
Z5-6-2 Kit-Engine Overhaul, Oversize - 0.50mm, Tc
| 32***40 | Bolt, Con-Rod, M8 X 57 | 8 |
| 32***17 | Kit-Top Gasket, Turbo Engine | 1 |
| 32***18 | Kit-Bottom Gasket | 1 |
Z5-3-1 Engine, Long, 320/40061
| 32***32 | Gear, Crankshaft, Assembly | 1 |
| 32***42 | Kit-Gasket, Long Engine, Nat/Asp | 1 |
| 32***05 | Camshaft, Assembly | 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 |
Z6-4-1 Primary Fuel Filter, Element, Cold Climate
| 32***05 | Element, Fuel Sediment/Water, 150 Microns | 1 |
| 32***33 | Seal, O'Ring | 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 |
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 |
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 |
Z8-12-3 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 |
Z8-2-1 Autotensioner, Drive Belt
| 13***8Z | Screw, Star Drive, M8 X 30 | 3 |
| 32***84 | Adjuster, Auto-Tension | 1 |
| 32***46 | Adjuster, Autotensioner | 1 |
Z8-3-2 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***71 | G.A, Ga Fuel Pipes(Hp/Lp), Genset | 1 |
| 32***33 | Ring, Snap | 1 |
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 |
Z12-3-1 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
| 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 - 55kw
| 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 |
Z15-4-1 Fuel Injection Pump, 12v - 89kw
| 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 - 86kw
| 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 |
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 |
Z19-1-1 Rocker Cover
| 32***90 | Cap, Oil Filler, Assembly | 1 |
| 32***92 | O Ring, Oil Filler Cap | 1 |
| 32***73 | Spring, Ccv Valve | 1 |
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 |
Z20-1-1 Rocker Shaft, Assembly
| 13***6Z | Bolt, M8 X 70 | 1 |
| 32***23 | Washer, Spring | 4 |
| 32***02 | Bolt, M8 X 55 | 7 |
Z20-2-1 Rocker Shaft, Assembly
| 13***6Z | Screw, Star Drive, M8 X 70 | 1 |
| 32***23 | Washer, Spring | 4 |
| 32***02 | Bolt, M8 X 55 | 7 |
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 |
Z21-1-1 Valve Tappets & Push, -Rods
| 32***15 | Rod, Push | 8 |
| 32***24 | Tappet, Valve | 8 |
| 32***05 | Camshaft, Assembly | 1 |
Z21-2-1 Pushrods & Tappets
| 32***24 | Tappet, Valve | 8 |
| 32***77 | Rod, Push | 8 |
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 |
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 |
Z23-1-1 Turbo Pipework
| 13***3Z | Screw, M6x16 | 2 |
| 13***5Z | Screw, Star Drive, M8 X 20 | 2 |
| 32***51 | O Ring | 2 |
Z25-1-1 Induction Manifold
| 13***7Z | Screw, Star Drive, M8 X 25 | 10 |
| 32***11 | Plate, Blanking, Intake Heater | 1 |
| 32***12 | Gasket, Intake Heater | 1 |
Z25-4-1 Induction Manifold, Tc
| 13***7Z | Screw, Star Drive, M8 X 25 | 10 |
| 32***11 | Plate, Blanking, Intake Heater | 1 |
| 32***12 | Gasket, Intake Heater | 1 |
Z25-2-1 Induction Manifold, Tc
| 13***7Z | Screw, Star Drive, M8 X 25 | 10 |
| 32***11 | Plate, Blanking, Intake Heater | 1 |
| 32***12 | Gasket, Intake Heater | 1 |
Z26-1-1 Exhaust Manifold
| 32***04 | Gasket, Exhaust Manifold | 1 |
| 32***20 | Manifold, Exhaust | 1 |
| 32***45 | Bolt, M10 X 57 | 8 |
Z26-2-1 Exhaust Manifold, Tc
| 32***00 | Manifold, Exhaust | 1 |
| 32***45 | Bolt, M10 X 57 | 8 |
| 32***80 | Gasket, Exhaust Manifold | 1 |
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 |
Z29-1-1 Oil Cooler
| 13***5Z | Bolt, Flange Head, M8 X 20 Lg | 5 |
| 13***7Z | Screw, Star Drive, M8 X 25 | 11 |
| 21***07 | Pin, Tension | 1 |
Z30-1-1 Oil Level Dipstick, & Tube, Standard
| 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 |
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 | 1 |
| 32***72 | Flywheel, Assembly | 1 |
| 32***74 | Bolt, M14 X 100 Special | 8 |
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 |
Z35-1-1 Camshaft, & Idler Gear
| 32***29 | Camshaft, Assembly, Na | 1 |
| 32***15 | Hub, Idler Gear | 1 |
| 32***17 | Bolt, Pan Head, M10 X 60mm | 3 |
Z35-2-1 Camshaft, & Idler Gear, Tc
| 32***30 | Camshaft, Assembly, Tc/Tca | 1 |
| 32***15 | Hub, Idler Gear | 1 |
| 32***17 | Bolt, Pan Head, M10 X 60mm | 3 |
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 |
Z37-1-1 Piston & Con-Rod, Assemblies
| 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 |
Z38-1-1 Crankshaft Assembly
| 13***1Z | Screw, Star Drive, M10 X 45 | 1 |
| 21***05 | Dowel, Pin | 2 |
| 32***19 | Seal, Front Oil | 1 |
Z39-1-1 Cylinder Block, Assembly
| 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 |
Z43-1-1 Air Filter, Installation
| 13***9Z | Setscrew, M8x35 | 2 |
| 13***7Z | Screw, M10 X 25 | 3 |
| 16***77 | Cap, Rain | 1 |
Z45-1-1 Exhaust Silencer, Open Build, Nat/Aspirated
| 02***16 | Nut | 4 |
| 32***06 | Gasket | 1 |
| 32***63 | Stud, M8 X 1.25 | 4 |
Z45-2-1 Exhaust Silencer, Open Build, Turbo
| 02***35 | Nut, Anti-Seize | 4 |
| 32***97 | Silencer, Exhaust | 1 |
| 32***53 | Clamp, "U" | 1 |
Z45-11-1 Exhaust System, Canopy Build, Nat/Aspirated
| 02***16 | Nut | 4 |
| 13***5D | Setscrew, M10 X 20 | 4 |
| 14***8D | Washer, M10 | 4 |
Z45-12-1 Exhaust System, Canopy Build, Turbo
| 02***35 | Nut, Anti-Seize | 3 |
| 13***5D | Setscrew, M10 X 20 | 4 |
| 14***8D | Washer, M10 | 4 |
Z46-1-1 Radiator & Fittings, Naturally Aspirated
| 30***53 | Radiator, Assembly | 1 |
| 30***55 | Cap, Radiator Pressure | 1 |
Z46-11-1 Fan Guards
| 13***3D | Setscrew | 24 |
| 14***6D | Washer, M6 Plain | 24 |
| 14***6D | Washer, Spring, M6 | 24 |
Z46-2-1 Radiator & Fittings
| 30***54 | Radiator, Assembly | 1 |
| 30***55 | Cap, Radiator Pressure | 1 |
Z48-11-1 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 | 2 |
| 32***72 | Hose, Fuel 1/2"Bore | 1 |
Z48-1-1 Radiator, Hose & Pipework
| 30***58 | Clip, Hose | 4 |
| 83***74 | Hose, Top Radiator | 1 |
| 83***75 | Hose, Bottom Radiator | 1 |
Z49-1-1 Cooling Fan & Spacer
| 13***8D | Bolt | 4 |
| 14***7D | Washer, M8 Plain | 4 |
| 14***7D | Washer, M8 Spring | 4 |
Z50-1-1 Fuel Pipes, Fuel Tank To Filter
| 32***16 | Hose, Fuel Supply | 2 |
| 32***68 | Clip, 6mm Hose | 4 |
| 32***74 | Adapter, 3/8" Male 3/8"Male | 2 |
Z51-11-1 Filter, Fuel Sedimenter, (Racor)
| 32***09 | Filter, Fuel, Assembly | 1 |
| 32***10 | 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, M10 X 30 | 0 |
| 13***8D | Setscrew, M12 X 30 | 0 |
| 13***3D | Nut, Self Lock M10 | 0 |
Z60-5-1 Lifting Bracket, (Optional)
| 13***2D | Setscrew, M16 X 50mm | 8 |
| 13***3Z | Nut | 8 |
| 14***1D | Washer, M16 | 16 |
Z60-2-1 Base & Fittings
| 13***8D | Setscrew, M10 X 30 | 0 |
| 13***8D | Setscrew, M12 X 30 | 0 |
| 13***3D | Nut, Self Lock M10 | 0 |
Z60-11-1 Fuel Tank
| 32***18 | Cap, Fuel Tank | 1 |
| 32***10 | Tank, Fuel | 1 |
| 32***64 | Plug, Male 3/8"Bsp, Socket Head | 1 |
Z61-1-1 Canopy Assembly
| 13***5D | Setscrew, M8x20 | 74 |
| 13***3D | Nut, Self Lock M8 | 22 |
| 14***7D | Washer, M8 Plain | 74 |
Z61-21-1 Canopy Soundproofing
| 32***14 | Kit-Panel, Foam Foil Backed, Centre Section | 1 |
| 32***15 | Kit-Panel, Foam Soundproofing, Centre Section | 1 |
| 32***39 | Kit-Panel, Soundproofing, End Cap Sections | 1 |
Z62-11-1 Alternator, Accessories
| 32***64 | Unit, Current Transformer | 1 |
| 32***31 | Kit, Voltage Monitor | 1 |
| 32***32 | Kit, Fuse 1a (10 Off) | 1 |
Z62-3-1 Alternator, Uci 224g-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***99 | Kit-Rectifier, Service | 1 |
Z62-1-1 Alternator, Uci 224d-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***56 | Alternator | 1 |
| 32***57 | Bearing, Nde | 1 |
Z62-2-1 Alternator, Uci 224e-16
| 32***08 | Regulator, A.V.R Sx460 | 1 |
| 32***57 | Bearing, Nde | 1 |
| 32***69 | Alternator | 1 |
Z62-12-1 Alternator, Accessories
| 32***17 | Unit, Current Transformer, 200-5a | 1 |
| 32***31 | Kit, Voltage Monitor | 1 |
| 32***32 | Kit, Fuse 1a (10 Off) | 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 Assembly
| 13***3D | Setscrew | 2 |
| 13***5D | Setscrew, M6 X 20mm Long | 4 |
| 13***5D | Setscrew, M8x20 | 4 |
Z63-11-1 Control Unit, Box & Panel Assemblies
| 13***3D | Setscrew | 4 |
| 13***5D | Setscrew, M6 X 20mm Long | 4 |
| 14***6D | Washer, M6 Plain | 8 |
Z63-2-1 Control Box Assembly
| 13***3D | Setscrew | 2 |
| 13***5D | Setscrew, M6 X 20mm Long | 4 |
| 13***5D | Setscrew, M8x20 | 4 |
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 |
Z64-3-1 Circuit Breaker Box, Assembly
| 13***5D | Screw, M5x20 | 6 |
| 13***5D | Setscrew, M6 X 20mm Long | 14 |
| 13***0D | Screw, Set | 2 |
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 |
Z64-2-1 Circuit Breaker Box, Assembly
| 13***5D | Screw, M5x20 | 6 |
| 13***5D | Setscrew, M8x20 | 4 |
| 13***8D | Setscrew, M10 X 30 | 1 |
Z64-1-1 Circuit Breaker Box, Assembly
| 13***5D | Screw, M5x20 | 6 |
| 13***5D | Setscrew, M8x20 | 4 |
| 13***3D | Nut, Self Lock M8 | 1 |
Z65-11-1 Battery Installation
| 13***5D | Setscrew, M8x20 | 2 |
| 13***5D | Setscrew, M10 X 20 | 4 |
| 13***3D | Nut, Self Lock M8 | 2 |
Z65-1-1 Engine Electrics
| 13***8D | Setscrew, M10 X 30 | 2 |
| 13***5D | Screw, M12 X 20mm Long | 2 |
| 13***3Z | Screw, M4 X 16 | 4 |
Frequently asked questions
What engine does the JCB G63 use?
The JCB G63 uses an EcoMAX or Dieselmax engine family, which does not require DEF or DPF regen.
What is the operating weight of the JCB G63?
The operating weight varies by configuration, with the 3CX Compact variant weighing 13,514 lb (6,130 kg).
What replaced the JCB G63?
The JCB G63 is part of the 3CX/4CX backhoe loader lineage. Specific successor models are not documented for the exact G63 serial range; verify with your dealer for the current model replacement.
What G63 owners discuss
What are the known powertrain and hydraulic behaviors for the JCB G63?
The JCB G63 is not a recognized heavy equipment model designation in the provided source texts. The sources reference JCB excavators such as JS130 (63 kW / 85 hp) and JS305, as well as backhoe loaders like the 3CX Compact and 3DX. No specific powertrain or hydraulic data exists for a 'JCB G63' machine in the provided documentation.
What undercarriage or wear patterns are typical for this machine type?
The provided sources do not contain undercarriage or wear pattern data for a JCB G63. General JCB maintenance notes indicate that hydraulic strainers should be cleaned and orbital steering valves checked for leaks on older models. Specific undercarriage wear data is not documented for the requested machine.
What are the engine quirks per series for the JCB G63?
The provided sources do not document engine specifications or quirks for a JCB G63. The sources reference JCB 444 engines, noting that early Dieselmax engines (Tier 2 and early Tier 3) are prone to big end bearing failures on the crankshaft if oil change intervals are stretched. Fuel injection pump faults are also common on earlier mechanical and early electronic JCB engines.
What are common electrical or sensor issues?
The provided sources do not list electrical or sensor issues for a JCB G63. General JCB troubleshooting notes indicate that starting problems may stem from simple battery issues or complex fuel system faults. Operators are advised to inspect the ignition switch, fuses, and relays for optimal working order and to use a JCB OBD2 scanner to diagnose control module malfunctions.
What should be checked when buying a used G63?
The provided sources do not contain buying advice for a JCB G63. The sources reference a Mercedes-Benz G63 AMG, noting that owners should check for water leaks from the sunroof area, hood sensor malfunctions, and TC (Transmission Control) malfunction lights. For JCB machinery, general advice is to check hydraulic oil levels, clean the hydraulic strainer, and inspect the orbital steering valve for leaks.
What are the safety-critical fixes for the JCB G63?
The provided sources do not contain safety-critical fix information for a JCB G63. For JCB machinery, safety-critical maintenance includes ensuring the hydraulic system is filled to the correct level and that the orbital steering valve is not leaking. Have your dealer verify the specific machine's safety status.
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 G63. Related factory variants of the same model family:
G63G63
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