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Jcb G550
Maintenance schedule, common problems & OEM parts breakdown
The JCB 550 series is a Loadall telescopic handler designed for material handling, construction, and agricultural applications. The family includes variants such as the 550-80, 550-140, and 550-170, with lift capacities ranging from 5,000 kg to 5,500 kg and operating weights between 10,530 kg and 26,810 lb depending on configuration. These machines feature permanent 4-wheel drive with epicyclic hub reduction axles and Max-Trac torque proportioning differentials. Power is delivered via turbocharged diesel engines, with specific models like the 550-80-AGRI utilizing a 108 kW engine. The series offers multiple steer modes including front wheel, all-wheel, and crab steer, and is compatible with a wide range of attachments via the Q-fit self-levelling carriage.
Across the 550 series generations, JCB refined the hydraulic system for simultaneous raise/lower and extend/retract operations, integrating a twin gear pump with suction strainer and filter. The transition from earlier Loadall models to the 550 series introduced advanced torque converter powershift transmissions and improved cab ergonomics with options for air suspension and climate control. The machine remains significant in the used market due to its versatile attachment compatibility and robust undercarriage design, which supports heavy-duty tasks in confined spaces. Maintenance intervals are structured to support long-term reliability, with the 500-hour engine oil interval reducing downtime compared to competitors with shorter service cycles.
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 G550 specifications
Engine
| Model | JCB ECOMax T4F |
| Cylinders | 4 |
| Displacement | 269 cu in (4,408 cc) |
| Gross Power | 100 hp (75 kW) @ 2,200 rpm |
| Max Torque | 306 lb-ft (415 Nm) @ 1,400 rpm |
| Emissions Tier | EU Stage V / US Tier 4 Final |
Weights
| Operating Weight | 24,000 lb (10,886 kg) to 26,810 lb (12,160 kg) varies by configuration |
| Shipping Weight | 24,000 lb (10,886 kg) |
Dimensions
| Transport Length | 245 in (6.22 m) to fork face |
| Transport Width | 96 in (2.44 m) over tires |
| Transport Height | 101 in (2.57 m) control handle raised |
| Wheelbase | 108 in (2.75 m) |
| Ground Clearance | 15.8 in (400 mm) |
| Turning Radius | 161 in (4.09 m) outside tires |
Performance
| Travel Speed | 18 mph (29 km/h) forward and reverse |
| Lift Capacity | 10,000 lb (4,536 kg) at max height; 5,000 lb (2,268 kg) at full reach |
| Max Lift Height | 54.79 ft (16.7 m) |
| Max Forward Reach | 41.34 ft (12.6 m) |
Service Capacities
| Fuel Tank | 33 gal (125 L) |
| Hydraulic System | 39.6 gal (150 L) |
| Engine Oil | 10 qt (9.5 L) |
| Cooling System | 12.92 L (3.4 gal) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Jcb G550 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the G550 beyond the schedule
Predictive Maintenance & Fluid Analysis
Monitor hydraulic oil condition every 500 hours to prevent pump wear in the twin gear system. Check the fuel water separator daily to protect the common rail injection system from contamination. Analyze engine oil samples at 1,000-hour intervals to detect early wear in the DieselMax engine components. Inspect the coolant mixture strength annually to ensure corrosion protection for the aluminum heat exchangers. Verify the transmission fluid level during the 1,000-hour service to maintain proper torque converter operation. Track hydraulic pressure trends to identify seal degradation in the telescopic boom cylinders.
Corrective & Common Repairs
Address CAN bus communication faults by inspecting harness connectors for water ingress and corrosion, a known issue in telescopic handlers. Replace worn drive belts during the 250-hour service to prevent power loss to the hydraulic pump. Repair hydraulic hose leaks promptly to maintain relief valve pressure at 3,770 psi. Replace fuel filter elements if engine power drops or idle becomes unstable. Inspect the oil-immersed multi-disc service brakes for wear and adjust pedal travel as needed. Check the Max-Trac differentials for noise or vibration indicating internal gear damage.
Overhaul & Rebuild Points
Rebuild the hydraulic pump if flow capacity drops below 42.8 gpm or internal noise increases. Replace the turbocharger if boost pressure limits are exceeded or oil consumption rises significantly. Overhaul the transmission if shift quality deteriorates or torque converter slippage occurs. Rebuild the telescopic boom cylinders if external seals leak or internal scoring is visible. Replace the final drive gears if backlash exceeds specifications or oil contamination is detected in the axle housings. Inspect the engine valve train during major overhauls to ensure proper clearance and timing.
Seasonal & Environment Servicing
Adjust the coolant antifreeze concentration to -36°C for cold climates to prevent freezing in the cooling system. Use JCB Super Universal Agricultural SAE 10W/30 oil for temperatures between -15°C and 30°C. Clean the radiator and intercooler fins frequently in dusty environments to prevent overheating. Inspect the air cleaner pre-cleaner more often in high-dust conditions to extend element life. Check the battery electrolyte levels and charge state in extreme cold to ensure reliable starting. Lubricate all pivot points with lithium-based NLGI No. 2 grease to prevent corrosion and wear in wet conditions.
G550 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| SC1763776 | Element, Fuel Filter | Fuel system service | Check fitment → |
| SC1393641 | Head, Fuel Filter | Fuel system service | Check fitment → |
| SC1393640 | Element, Filter, Fuel Feed | Fuel system service | Check fitment → |
| SC1393639 | Filter, Fuel Feed | Fuel system service | Check fitment → |
| 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.
G550 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| P0747-15 | Transmission Fluid Pressure Control Solenoid Circuit Performance/Stuck | Faulty pressure control solenoid, low transmission fluid level, or clogged filter; electrical issue in the solenoid circuit. | Check transmission fluid level and condition. Inspect solenoid wiring harness for damage or corrosion. Verify solenoid operation with diagnostic tool. |
| P0335 | Crankshaft Position Sensor 'A' Circuit Malfunction | Failed crankshaft position sensor, damaged wiring, or faulty sensor ring/tone wheel. | Inspect sensor and connector for damage/corrosion. Check sensor gap and tone wheel integrity. Test sensor signal with oscilloscope. |
| P0087 | Fuel Rail/System Pressure Too Low | Fuel supply restriction, failing lift pump, leaking fuel lines, or faulty high-pressure pump. | Check fuel filter condition and fuel tank vent. Verify lift pump output pressure. Inspect high-pressure fuel lines for leaks. |
| P0112 | Intake Air Temperature Sensor 1 Circuit Low Input | Short to ground in IAT sensor circuit, faulty sensor, or connector corrosion. | Inspect IAT sensor connector and wiring for shorts or damage. Test sensor resistance. Replace sensor if out of specification. |
| P0697 | ECU Internal 5V Supply 2 Auxiliary Fault | Internal ECU regulator failure or short circuit on the 5V reference circuit it supplies. | Check all sensors on the affected 5V reference circuit for shorts. If no external short is found, ECU replacement may be required. |
| P0321-87 | CAN Bus Message Error for Engine Speed from Engine ECU | CAN bus communication fault, damaged wiring, or poor connection at ECU or display module. | Inspect CAN bus wiring harness for damage, chafing, or water ingress. Check connector pins for corrosion. Verify ground points. |
| P1093 | Common Rail Pressure Fault (Lack of Feed) | Restricted fuel supply, air in fuel system, or failing fuel lift pump. | Bleed fuel system. Check fuel filters and lines for restrictions. Verify lift pump operation and pressure. |
| P1101 | Rail Pressure Control Error Positive Fault | Fuel pressure regulator/stator valve issue, high-pressure pump wear, or sensor discrepancy. | Check fuel pressure sensor accuracy. Inspect fuel pressure regulator/stator valve operation. Verify high-pressure pump performance. |
| P0200 | Injector Circuit Open | Open circuit in injector wiring, faulty injector connector, or failed injector coil. | Inspect injector connectors and wiring harness for damage. Check injector resistance. Verify power and ground at injector connector. |
| P0330 | Knock Sensor 1 Circuit Malfunction | Faulty knock sensor, loose mounting, or damaged wiring. | Inspect knock sensor mounting and wiring. Check for loose connections. Test sensor signal with diagnostic tool. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
G550 attachments & work tools
Quick Hitch & Carriages
JCB Q-fit self-levelling carriage with lever operated pin locking accepts pallet forks and a wide range of attachments. A variable pin centre design allows the hitch to pick up a wider range of attachments, maximizing flexibility and productivity.
Buckets
Available in Deep Profile, Ditch Maintenance, Grading, Heavy Duty, Jaw, Ribbed, Tapered Ditching, and Tilting Grading configurations. These buckets are designed for improved productivity, efficient digging, better material retention, and clean release of material.
Forks & Fork Frames
A range of fork options is available for effortless pick and place applications. The Q-fit carriage accepts pallet forks, allowing for quick changeover and versatile material handling.
Hydraulic Breakers
JCB offers an OEM breaker range designed to work in perfect harmony with its machines as well as other brands of excavator and breaker carrier. The hydraulic brake attachment is designed for high performance and precision in demolition, trenching, and concrete breaking.
Tilt Rotators
The tilt rotator enables attachments to tilt up to 45 degrees and rotate 360 degrees, providing multi-directional movement and increased precision. It features an integrated hydraulic system that connects seamlessly to the machine, reducing the need to reposition the unit.
Sweepers
JCB offers a range of sweepers to further increase the versatility of machines for highly effective cleaning on job sites.
Specialist Attachments
Options include grabs, grapples, skips, sweeper collectors, earth drills/augers, lifting equipment, and patch planers. These tools are designed to perform the toughest applications and enhance productivity across various industries.
All G550 assemblies by section
Every catalogued assembly group for the Jcb G550. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Z Jcb Generator Set
Z0-5-1 Generator Set, G380 350kva, 50hz 400v Prime
| 32***43 | Jcb, Generator G380, 350kva | 1 |
Z0-8-1 Generator Set, G400q 360kva, 50hz 400v Prime
| 32***46 | Jcb, Generator G400q, 360kva | 1 |
Z0-6-1 Generator Set, G380q 350kva, 50hz 400v Prime
| 32***44 | Jcb, Generator G380q, 350kvaq | 1 |
Z0-10-1 Generator Set, G440q 400kva, 50hz 400v Prime
Z0-2-1 Generator Set, G330q 300kva, 50hz 400v Prime
| 32***40 | Jcb, Generator G330q, 300kva | 1 |
Z0-3-1 Generator Set, G350 310kva, 50hz 400v Prime
| 32***41 | Jcb, Generator G350, 310kva | 1 |
Z0-4-1 Generator Set, G350q 310kva, 50hz 400v Prime
| 32***42 | Jcb, Generator G350q, 310kva | 1 |
Z0-7-1 Generator Set, G400 360kva, 50hz 400v Prime
| 32***45 | Jcb, Generator G400, 360kva | 1 |
Z0-9-1 Generator Set, G440 400kva, 50hz 400v Prime
| 32***47 | Jcb, Generator G440, 400kva | 1 |
Z0-1-1 Generator Set, G330 300kva, 50hz 400v Prime
| 32***39 | Jcb, Generator G330, 300kva | 1 |
Z0-11-1 Generator Set, G550 500kva, 50hz 400v Prime
| 32***49 | Jcb, Generator G550, 500kva | 1 |
Z0-12-1 Generator Set, G550q 500kva, 50hz 400v Prime
| 32***50 | Jcb, Generator G550q, 500kva | 1 |
Z1-3-1 Engine, Complete, Dc12 Ems
| 32***96 | Engine, Assembly, Dc12 Ems | 1 |
Z1-11-1 Engine, Complete, Dc16 Ems
| 32***97 | Engine, Assembly, Dc16 Ems | 1 |
Z1-1-1 Engine, Complete, Dc12 Ems
| 32***94 | Engine, Assembly, Dc12 Ems | 1 |
| SC***10 | Tool, Rear Crank Seal | 1 |
Z1-2-1 Engine, Complete, Dc12 Ems
| 32***95 | Engine, Assembly, Dc12 Ems | 1 |
Z4-1-1 Gasket Set, Cylinder Head, Dc12
| SC***51 | Gasket, Rocker Cover, Upper | 1 |
| SC***42 | Seal, Fuel Feed | 4 |
| SC***61 | Gasket, Fuel Feed | 1 |
Z4-11-1 Gasket Set, Cylinder Head, Dc16
| SC***83 | Gasket, Manifold, Fuel | 1 |
| SC***61 | Gasket, Fuel Feed | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 1 |
Z4-12-1 Gasket Set, General Overhaul, Dc16
| SC***13 | Gasket | 2 |
| SC***83 | O Ring | 1 |
| SC***90 | Seal | 2 |
Z4-2-1 Gasket Set, General Overhaul
| SC***83 | O Ring | 1 |
| SC***11 | O Ring | 2 |
| SC***85 | O Ring | 1 |
Z5-1-1 Service Kit, Outer, Turbocharger
| SC***37 | Gasket | 1 |
| SC***71 | Gasket | 1 |
| SC***85 | Element, Oil Filter | 1 |
Z5-5-1 Kit, Piston, & Liner Dc12
| 33***21 | Liner, Cylinder | 1 |
| 33***22 | O Ring | 1 |
| 33***23 | O Ring | 1 |
Z5-11-1 Kit,Piston & Liner
| SC***29 | Pin, Gudgeon | 1 |
| SC***87 | Shim, =0.2mm, Liner | 0 |
| SC***43 | Ring, Retaining | 2 |
Z6-2-1 Filter, Oil, Dc12
| 33***08 | Element, Oil Filter | 1 |
| SC***98 | Adapter | 1 |
| SC***58 | Adapter | 1 |
Z6-13-1 Filter, Oil, Dc16
| SC***08 | Filter, Oil, Assembly | 1 |
| SC***54 | O Ring | 1 |
| SC***28 | Tube | 1 |
Z6-1-1 Fuel Filter, Dc12
| SC***89 | Head, Filter | 1 |
| SC***04 | Plug | 1 |
| SC***76 | Element, Fuel Filter | 1 |
Z6-14-1 Filter, Oil, Centrifugal, Dc16
| SC***83 | O Ring | 1 |
| SC***35 | Nozzle | 1 |
| SC***85 | O Ring | 1 |
Z6-1-2 Filter, Water Seperator, Dc12
| SC***02 | Bowl, Fuel Feed | 1 |
| SC***41 | Head, Fuel Filter | 1 |
| SC***40 | Element, Filter, Fuel Feed | 1 |
Z6-12-1 Filter, Water Seperator, Dc16
| SC***02 | Bowl, Fuel Feed | 1 |
| SC***41 | Head, Fuel Filter | 1 |
| SC***40 | Element, Filter, Fuel Feed | 1 |
Z6-3-1 Filter, Oil, Centrifugal, Dc12
| SC***32 | Cover | 2 |
| SC***83 | O Ring | 1 |
| SC***85 | O Ring | 1 |
Z6-11-1 Fuel Filter, Dc16
| SC***57 | Cover, Fuel Feed | 1 |
| SC***59 | Filter, Fuel | 1 |
| SC***58 | Pipe, Fuel Feed | 1 |
Z8-12-1 Front End Drive, Accessories, Cooling Fan, Dc16
| SC***88 | Screw, M12 X 35 | 6 |
| SC***11 | Screw | 6 |
| SC***71 | Hub, Fan Pulley, Driver | 1 |
Z8-1-1 Front End Drive, Accessories, With Cooling Fan
| SC***88 | Screw, M12 X 35 | 6 |
| SC***95 | Bearing, Ball | 1 |
| SC***12 | Bolt, M14 X 74, Journal C/Shaft | 6 |
Z8-13-1 Front End Drive, Accessories, Water Pump/Alternator
| SC***87 | Roller, Fan Belt | 1 |
| SC***65 | Belt, Poly-V | 1 |
| SC***52 | Screw, M12 X 50 | 6 |
Z8-11-1 Front End Drive, Cooling Fan
| SC***77 | Bearing, Ball | 1 |
| SC***09 | Screw | 1 |
| SC***88 | Fan | 1 |
Z9-2-1 Starter Motor, Dc16
| 33***01 | Motor, Starter | 1 |
| SC***23 | Stud | 3 |
| SC***26 | Plate, Starter Motor | 1 |
Z9-1-1 Starter Motor, Dc12
| SC***26 | Plate, Starter Motor | 1 |
| SC***48 | Relay | 1 |
| SC***11 | Motor, Starter | 1 |
Z10-1-1 Alternator, Dc12
| SC***95 | Bolt, M16 X 90 | 1 |
| SC***66 | Capacitor | 1 |
| SC***53 | Regulator | 1 |
Z10-11-1 Alternator, Dc16
| SC***92 | Sleeve, Guide | 2 |
| SC***19 | Bracket, Alternator Mounting | 1 |
| SC***16 | Alternator | 1 |
Z10-11-2 Alternator, 100amp, Dc16
| 33***00 | Alternator | 1 |
| SC***92 | Sleeve, Guide | 2 |
| SC***64 | Alternator | 1 |
Z11-12-1 Harnesses & Sensors, Dc16
| SC***21 | Sensor, Pressure, Oil | 1 |
| SC***20 | Sensor, Pressure, Charge | 1 |
| SC***03 | Sensor, Speed 1 | 1 |
Z11-11-1 Unit, Electronic Control, Dc16
| 33***43 | Housing, Contact Engine Control Unit, 10-Pol | 0 |
| SC***91 | Cover, Engine Control Unit | 2 |
| SC***22 | Bolt | 8 |
Z11-13-1 Cable Retainer, Cylinder Head
| 33***02 | Holder, Cable Clamp | 2 |
| 33***03 | Holder, Cable Bushing | 2 |
| SC***91 | Holder, Cable, Clamp | 8 |
Z11-4-1 Protection Plates, & Mounting Bracket, Dc12
| SC***74 | Plate, Protective | 1 |
| SC***63 | Bracket | 1 |
| SC***94 | Plate, Protective | 1 |
Z11-2-1 Harnesses & Sensors, Dc12
| SC***21 | Sensor, Pressure, Oil | 1 |
| SC***72 | Cable, Harness | 1 |
| SC***20 | Sensor, Pressure, Charge | 1 |
Z11-14-1 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 |
Z11-3-1 Cable Retainers, Cylinder Head, Dc12
| SC***30 | Duct | 1 |
| SC***02 | Screw | 6 |
| SC***69 | Attaching Plate | 1 |
Z11-1-1 Unit, Electronic Control, Dc12
| SC***91 | Cover, Engine Control Unit | 2 |
| SC***22 | Bolt | 8 |
| SC***99 | Housing, Contact 2, Engine Control Unit | 0 |
Z12-1-1 Fuel Pipework, High Pressure, Dc12
| SC***90 | Seal | 1 |
| SC***77 | Nut | 1 |
| SC***67 | Banjo | 1 |
Z12-11-1 Fuel Pipework, High Pressure, Dc16
| SC***90 | Seal | 2 |
| SC***41 | Screw, Banjo | 2 |
| SC***77 | Nut | 1 |
Z12-12-1 Fuel Return Pipes, Dc16
| 33***17 | Valve, Overflow | 1 |
| SC***77 | Nut | 1 |
| SC***65 | Bolt | 1 |
Z13-11-1 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, Dc12
| SC***41 | Clamp, Injector | 6 |
| SC***88 | Nozzle, Fuel Injector | 1 |
| SC***64 | O Ring, Injector | 6 |
Z15-1-1 Fuel Feed Pump, Dc12
| SC***11 | O Ring | 1 |
| SC***19 | Screw, M8 X 30 | 2 |
| SC***09 | Screw | 2 |
Z15-11-1 Fuel Feed Pump, Dc16
| SC***19 | Screw, M8 X 30 | 2 |
| SC***70 | Pump, Hand, Fuel | 1 |
| SC***55 | Pump, Fuel Lift | 1 |
Z16-1-1 Water Pump, Dc12
| SC***33 | Pump | 1 |
| SC***21 | Screw, M8 X 40 | 2 |
| SC***19 | Screw, M8 X 30 | 7 |
Z16-11-1 Water Pump, Dc16
| SC***64 | Gasket, Water Pump | 1 |
| SC***21 | Screw, M8 X 40 | 4 |
| SC***25 | Screw, M8 X 60 | 8 |
Z17-12-1 Water Bleed Pipe, Dc16
| SC***89 | Pipe, Bleed Assembly. | 1 |
| SC***15 | Hose, Bleed Assembly. | 1 |
| SC***86 | Connector, Bleed Pipe | 8 |
Z17-2-1 Water Bleed Pipe, Dc12
| SC***84 | Bolt | 1 |
| SC***46 | Bolt | 5 |
| SC***52 | Pipe | 1 |
Z17-1-1 Water Inlet, Connector
| SC***18 | Screw | 3 |
| SC***86 | Connector, Water Inlet | 1 |
| SC***16 | Gasket | 1 |
Z18-1-1 Thermostat & Housing, Dc12
| SC***85 | Housing, Thermostat | 1 |
| SC***19 | Screw, M8 X 30 | 10 |
| SC***87 | O Ring | 1 |
Z18-11-1 Thermostat & Housing, Dc16
| SC***25 | Screw, M8 X 60 | 4 |
| SC***24 | Thermostat, 83 Degrees | 1 |
| SC***25 | Gasket, Thermostat | 1 |
Z19-12-1 Breather Tube, Crankcase, Dc12
| SC***92 | Pipe, Crankcase, Ventilation | 1 |
| SC***89 | Screw, M6 X 16 | 3 |
| SC***21 | Screw, M8 X 40 | 4 |
Z19-1-1 Rocker Cover, Dc12
| SC***51 | Gasket, Rocker Cover, Upper | 6 |
| SC***06 | Cap, Oil Filler | 1 |
| SC***19 | Screw, M8 X 30 | 24 |
Z19-11-1 Rocker Cover, Dc16
| SC***90 | Cover | 8 |
| SC***06 | Cap, Oil Filler | 1 |
| SC***66 | Gasket, Rocker Cover, Upper | 8 |
Z19-2-1 Breather Tube, Crankcase, Dc12
| SC***20 | Screw | 1 |
| SC***82 | Pipe, Crankcase Breather | 1 |
| SC***32 | Nut, Flange M8 | 2 |
Z20-11-1 Rocker Shaft, Assembly
| SC***10 | Screw, Adjusting | 1 |
| SC***89 | Arm, Rocker, Injector | 8 |
| SC***92 | Plug, Rivet | 8 |
Z20-1-1 Rocker Shaft, Assembly
| SC***10 | Screw, Adjusting | 1 |
| SC***89 | Arm, Rocker, Injector | 6 |
| SC***92 | Plug, Rivet | 6 |
Z21-1-1 Pushrods & Tappets, Dc12
| SC***02 | Circlip | 2 |
| SC***51 | Rod, Push | 4 |
| SC***45 | Rod, Push | 2 |
Z21-11-1 Pushrods & Tappets, Dc16
| SC***79 | Pushrod | 8 |
| SC***07 | Tappet, Roller | 2 |
| SC***46 | Bolt, Screw M10 X 60 | 16 |
Z22-11-1 Turbocharger, Dc16
| SC***94 | Turbocharger | 1 |
Z22-1-1 Turbocharger, Dc12
| SC***17 | Turbocharger | 1 |
| SC***39 | Turbocharger, Service Exchange | 1 |
Z23-11-1 Turbo Pipework
| SC***44 | Adapter | 1 |
| SC***71 | Gasket | 1 |
| SC***98 | Adapter | 1 |
Z23-2-1 Turbo Exhaust, Pipework, Dc12
| SC***33 | Pipe, Exhaust Elbow | 1 |
| SC***32 | Nut | 1 |
| SC***37 | Clamp, "V" | 1 |
Z23-1-1 Turbo Pipework
| SC***71 | Gasket | 1 |
| SC***73 | Clamp | 2 |
| SC***98 | Adapter | 1 |
Z23-12-1 Turbo Exhaust, Pipework
| SC***32 | Nut | 1 |
| SC***74 | Clamp, "V" | 1 |
| SC***01 | Pipe | 1 |
Z25-1-1 Induction Manifold, Dc12
| SC***18 | Screw | 4 |
| SC***82 | Plug | 1 |
| SC***67 | Banjo | 1 |
Z25-11-1 Induction Manifold
| SC***58 | Pipe, Flange | 2 |
| SC***33 | O Ring, Inlet Manifold | 2 |
| SC***19 | Screw, M8 X 30 | 8 |
Z26-11-1 Exhaust Manifold
| SC***02 | Pipe, Expansion | 1 |
| SC***65 | Spacer | 8 |
| SC***67 | Manifold, Exhaust | 1 |
Z26-1-1 Exhaust Manifold
| SC***40 | Gasket | 1 |
| SC***64 | Spacer | 2 |
| SC***99 | Manifold, Exhaust | 2 |
Z27-1-1 Cylinder Head, Assembly
| SC***02 | Spring, Exhaust Valve, Outer | 12 |
| SC***30 | Valve, Exhaust | 12 |
| SC***22 | Valve, Intake | 12 |
Z27-11-1 Cylinder Head, Assembly
| SC***02 | Spring, Exhaust Valve, Outer | 16 |
| SC***22 | Head | 8 |
| SC***30 | Valve, Exhaust | 16 |
Z29-11-1 Oil Cooler, Dc16
| SC***33 | Cooler, Oil | 1 |
| SC***77 | Cover | 1 |
| SC***13 | Gasket, Cooling System | 1 |
Z29-1-1 Oil Cooler, Dc12
| SC***98 | Gasket | 1 |
| SC***18 | Gasket | 1 |
| SC***54 | Adapter | 1 |
Z30-1-1 Oil Level Dipstick, & Tube, Dc12
| SC***24 | Ferrule | 1 |
| SC***48 | Dipstick | 1 |
| SC***37 | Clip | 1 |
Z30-11-1 Oil Level Dipstick, & Tube, Dc16
| SC***91 | Pipe | 1 |
| SC***47 | Adapter, Union, Straight | 1 |
| SC***26 | Flange Pipe | 1 |
Z31-11-1 Oil Sump, Dc16
| SC***14 | Washer, Sealing | 1 |
| SC***22 | Screw, M8 X 60 | 26 |
| SC***35 | Insert | 1 |
Z31-1-1 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, Dc12
| SC***43 | Pipe | 1 |
| SC***22 | Screw, M8 X 60 | 4 |
| SC***46 | Pipe | 1 |
Z32-2-1 Oil Pressure Sensor, Dc12
| SC***89 | Adapter | 1 |
| SC***45 | Pipe, Oil Pressure Sensor | 1 |
| SC***89 | Screw, M6 X 16 | 2 |
Z32-11-1 Oil Pump, Dc16
| SC***25 | Screw, M8 X 60 | 4 |
| SC***19 | Screw, M8 X 30 | 19 |
| SC***19 | O Ring | 2 |
Z33-11-1 Flywheel Assembly, Dc16
| SC***95 | Bolt, M16 X 90 | 10 |
| SC***13 | Gear, Flywheel Ring | 1 |
Z33-1-1 Flywheel Assembly, Dc12
| SC***95 | Bolt, M16 X 90 | 10 |
| SC***88 | Flywheel, Assembly | 1 |
| SC***13 | Gear, Flywheel Ring | 1 |
Z34-11-1 Flywheel Housing, Dc16
| SC***80 | O Ring | 1 |
| SC***07 | Gasket, Flywheel Housing | 1 |
| SC***83 | Seal, Rear Oil | 1 |
Z34-1-1 Flywheel Housing
| SC***80 | O Ring | 1 |
| SC***51 | Housing, Flywheel | 1 |
| SC***18 | Terminal, Cable, Flat Socket | 2 |
Z35-11-1 Camshaft, & Timing Gears, Dc16
| SC***66 | Gear | 1 |
| SC***77 | Bearing, Ball | 1 |
| SC***94 | Gear | 1 |
Z35-1-1 Camshaft, & Timing Gears, Dc12
| SC***77 | Bearing, Ball | 2 |
| SC***94 | Gear | 1 |
| SC***21 | Shaft | 2 |
Z36-12-1 Casing, Vibration Insulator, Dc16
| SC***60 | Gasket | 1 |
| SC***40 | Cover | 1 |
| SC***87 | O Ring | 1 |
Z36-11-1 Timing Case & Covers, Dc16
| SC***64 | Spring | 1 |
| SC***18 | Gasket | 2 |
| SC***10 | Stud, M10 X 50 | 2 |
Z36-1-1 Timing Case & Covers, Dc12
| SC***67 | Plug | 1 |
| SC***37 | Cover | 1 |
| SC***25 | Screw, M8 X 60 | 2 |
Z37-1-1 Piston & Con-Rod, Assemblies, Dc12
| SC***29 | Pin, Gudgeon | 1 |
| SC***59 | Bush, Small End | 1 |
| SC***67 | Bolt, Con-Rod, M12 X 72 | 2 |
Z37-11-1 Piston & Con-Rod, Assemblies, Dc16
| SC***29 | Pin, Gudgeon | 1 |
| SC***59 | Bush, Small End | 1 |
| SC***53 | Rod, Connecting | 8 |
Z38-1-1 Crankshaft Assembly, Dc12
| SC***84 | Ring, Sealing | 1 |
| SC***84 | Crankshaft, Assembly | 1 |
| SC***04 | Gear, Crankshaft | 1 |
Z38-11-1 Crankshaft Assembly, Dc16
| SC***16 | Crankshaft | 1 |
| SC***89 | Screw | 12 |
| SC***04 | Gear, Crankshaft | 1 |
Z39-11-1 Cylinder Block, Assembly, Dc16
| SC***93 | O Ring | 1 |
| SC***18 | Cover | 1 |
| SC***17 | Plate | 1 |
Z39-1-1 Cylinder Block, Assembly, Dc12
| SC***08 | Tap, Drain | 1 |
| SC***18 | Terminal, Cable, Flat Socket | 2 |
| SC***89 | Screw, M6 X 16 | 1 |
Z43-11-1 Air Filter, Installation, Dc16
| 32***64 | Clip, Overcentre | 5 |
| 32***98 | Cover, Filter End | 1 |
| 32***99 | O Ring | 1 |
Z43-1-1 Air Filter, Installation, Dc12
| 32***05 | Valve, Dump | 1 |
| 32***00 | Indicator, Restriction | 1 |
| 32***64 | Clip, Overcentre | 2 |
Z44-11-1 Air Induction Hoses
| SC***32 | Sensor | 1 |
| SC***69 | Hose | 1 |
| SC***86 | Clamp, Hose | 2 |
Z45-12-1 Exhaust System, Canopy Build
| 32***23 | Cap, Rain | 1 |
| 32***66 | Clamp _u_ | 3 |
| 32***99 | Silencer, Exhaust Reactive | 1 |
Z45-1-1 Exhaust Silencer, Open Build
| 32***00 | Silencer, Exhaust | 1 |
| 32***23 | Cap, Rain | 1 |
| 32***96 | Pipe, Exhaust Stub | 1 |
Z45-11-1 Exhaust System, Canopy Build
| 32***23 | Cap, Rain | 1 |
| 32***25 | Silencer | 1 |
| 32***66 | Clamp _u_ | 3 |
Z46-11-1 Fan Guards, Dc16
| 33***08 | Bracket | 1 |
| 33***09 | Washer | 19 |
| SC***63 | Washer | 2 |
Z46-1-1 Drive Belt Guard, Dc12
| 33***06 | Guard, Drive Belt, Upper | 1 |
| 33***07 | Washer | 2 |
| SC***05 | Bracket | 3 |
Z47-1-1 Cooler Assembly, Dc12
| 13***3D | Setscrew | 0 |
| 13***3D | Nut, M6 Lock | 0 |
| 30***68 | Radiator, Assembly | 1 |
Z47-11-1 Cooler Assembly, Dc16
| SC***45 | Tank, Expansion | 1 |
| SC***68 | Cap, Coolant Pressure | 1 |
| SC***67 | Sensor | 1 |
Z48-11-1 Radiator, Hose & Pipework, Dc16
| SC***65 | Gasket | 1 |
| SC***82 | Pipe | 1 |
| SC***92 | Gasket | 1 |
Z48-1-1 Radiator/Cooler, Hose & Pipework, Dc12
| 30***79 | Clip | 10 |
| 30***80 | Gasket, Flange | 1 |
| 30***81 | Plate, Clamping | 1 |
Z48-12-1 Charge Air Cooler, Hose & Pipework, Dc12
| SC***91 | Hose | 3 |
| SC***18 | Screw | 2 |
| SC***24 | Clamp, 'V' | 1 |
Z49-1-1 Cooling Fan & Spacer
Z50-1-1 Fuel Pipes, Fuel Tank To Filter
| 13***0D | Setscrew, M10 X 40mm | 4 |
| 13***3D | Nut, Self Lock M10 | 4 |
| 14***8D | Washer, M10 | 4 |
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***21 | Seal, Bonded 3/4" Bsp | 1 |
| 22***03 | Clip, Jubilee | 2 |
| 32***71 | Adapter, 1/2"Bsp M 1/2"Tail | 2 |
Z60-5-1 Lifting Bracket, (Optional)
| 13***6D | Bolt, M20 X 70mm | 8 |
| 13***3D | Nut, M20, 2.5 Pitch; San 10***25 | 8 |
| 14***2D | Washer, Plain | 16 |
Z60-11-1 Fuel Tank
| 32***18 | Cap, Fuel Tank | 1 |
| 32***65 | Gauge Fuel | 1 |
| 32***77 | Plug, 1.5"Bsp | 2 |
Z60-2-1 Base & Fittings
| 13***8D | Setscrew, M10 X 30 | 0 |
| 13***8D | Setscrew, M16 X 30mm | 8 |
| 13***3D | Nut, Self Lock M10 | 0 |
Z60-1-1 Base & Fittings
| 13***8D | Setscrew, M10 X 30 | 0 |
| 13***8D | Setscrew, M16 X 30mm | 8 |
| 13***3D | Nut, Self Lock M10 | 0 |
Z61-2-1 Canopy, Middle Section
| 13***5D | Setscrew, M8x20 | 78 |
| 14***7D | Washer, M8 Plain | 78 |
| 14***7D | Washer, M8 Spring | 78 |
Z61-21-1 Canopy Soundproofing
| 32***16 | Kit-Panel, Foam Backed, Centre Section | 1 |
| 32***17 | Kit-Panel, Sound Proofing, Centre Section | 1 |
| 32***18 | Kit-Panel, Foam Backed, 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 |
Z61-3-1 Canopy, Front Section
| 13***5D | Setscrew, M8x20 | 28 |
| 13***7D | Setscrew, M10 X 25mm Long | 2 |
| 13***3D | Nut, Self Lock M10 | 2 |
Z61-1-1 Canopy Assembly
| 32***84 | Canopy, Assembly | 1 |
| 32***85 | Canopy, Middle Section | 1 |
| 32***86 | Canopy, Front Section | 1 |
Z62-1-1 Alternator, Hci444d
| 32***02 | Alternator | 1 |
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
Z62-4-1 Alternator, Hci544d
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
| 32***24 | Bearing | 1 |
Z62-11-1 Alternator, Accessories
| 13***8D | Bolt, M6 X 30 | 6 |
| 13***5D | Bolt, M10x35 | 8 |
| 13***3D | Nut, Self Lock M10 | 8 |
Z62-2-1 Alternator, Hci444e
| 32***19 | Alternator | 1 |
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
Z62-3-1 Alternator, Hci444f
| 32***21 | Alternator, Assembly | 1 |
| 32***22 | Kit-Rectifier | 1 |
| 32***23 | Regulator, As440; Sa465 See Bulletin | 1 |
Z63-1-1 Control Box & Panel, Assemblies
| 13***1D | Screw, Set M6x12 | 2 |
| 13***5D | Setscrew, M8x20 | 8 |
| 14***6D | Washer, M6 Plain | 2 |
Z64-1-1 Circuit Breaker Box, Assembly
| 13***8D | Bolt, M6 X 30 | 12 |
| 13***5D | Setscrew, M8x20 | 10 |
| 13***7D | Setscrew, M8x25 | 2 |
Z64-11-1 Circuit Breaker Box, Assembly
| 32***22 | Harness, Power | 1 |
| 32***70 | Harness, Power | 1 |
Z65-11-1 Battery Installation
| 13***5D | Setscrew, M8x20 | 2 |
| 13***5D | Setscrew, M10 X 20 | 4 |
| 13***3D | Nut, Self Lock M8 | 1 |
Z65-1-1 Engine Electrics
| 13***8D | Bolt, M10 X 30mm Lg | 2 |
| 14***8D | Washer, M10 | 2 |
| 14***8D | Washer, Spring, M10 | 2 |
Frequently asked questions
What engine does the JCB 550 series use?
The JCB 550 series uses turbocharged diesel engines, with specific variants like the 550-80-AGRI featuring a 108 kW engine. The exact engine model and displacement vary by series and configuration.
What is the operating weight of the JCB 550?
The operating weight varies by configuration, ranging from 10,530 kg (23,215 lb) for the 550-80-AGRI to 26,810 lb for standard telehandler configurations.
What replaced the JCB 550 series?
The JCB 550 series is part of the Loadall family, with newer models such as the 550-170 and subsequent generations continuing the line. Specific successor models depend on the regional market and application requirements.
What G550 owners discuss
What are the known powertrain and hydraulic behaviors for the JCB 550 series telehandler?
The JCB 550 series utilizes a powershift transmission with a torque converter and a twin gear hydraulic pump equipped with a suction strainer and filter. This configuration allows for simultaneous operation of raise/lower and extend/retract functions. Operators report that hydraulic performance can degrade when the rear of the machine is lower than the front, indicating potential suction issues for the pump in that orientation. Common hydraulic faults include slow fork tilt or failure to tilt down when the oil is warm, often resolved by checking the counterbalance valve at the cylinder base or ensuring the auxiliary control lever is correctly positioned.
What undercarriage or wear patterns are typical for this machine type?
The JCB 550 series features permanent four-wheel drive with JCB epicyclic hub reduction drive/steer axles and Max-Trac torque proportioning differentials. Service documentation specifies servo-assisted, hydraulically activated, self-adjusting, oil-immersed multi-disc service brakes on both front and rear axles. Wear patterns in this class often involve the orbital steering valve, which is a common failure point on older JCB models and prone to leaking. Operators should monitor the condition of the oil-immersed brake discs and the integrity of the hydraulic seals on the telescopic booms, as boom synchronization issues (where the second boom extends faster than the first) are a known operational concern.
What engine quirks are associated with the JCB 550 series?
The JCB 550 series is powered by a turbocharged diesel engine with a displacement of 269 cubic inches, generating a maximum torque of 306 lb-ft at 1,400 rpm. While specific engine model designations vary by configuration and series, JCB engines in this class are generally noted for reliability but are susceptible to starting difficulties caused by battery issues or fuel system faults. Early generation JCB engines (Tier 2 and early Tier 3) are known to be prone to big-end bearing failures on the crankshaft if oil change intervals are extended or oil quality is poor. Fuel injection pump faults are also common on earlier mechanical and early electronic variants.
What are common electrical or sensor issues reported by operators?
Operators report that electrical issues often manifest as difficulty starting the engine or low power output due to control module malfunctions. Diagnostic tools should be used to check the status of the ignition switch, fuses, and relays. In cases of low power output, the catalytic converter, exhaust manifold, and muffler should be inspected for damage or obstructions. Additionally, the hydraulic system's suction strainer and filter must be kept clean to prevent flow restrictions that can mimic electrical or control failures.
What should be checked when buying a used JCB 550 telehandler?
When evaluating a used JCB 550, verify the hydraulic fluid level and condition, and inspect the suction strainer and filter for blockages. Check the orbital steering valve for leaks, as this is a common fault. Ensure the telescopic booms extend and retract in synchronization, as misalignment indicates potential valve or seal issues. Verify the condition of the oil-immersed multi-disc brakes on both axles. Confirm the engine starts reliably when cold and check for any warning lights related to the engine control module or hydraulic pressure. Review the maintenance history for adherence to oil change intervals to assess the risk of big-end bearing wear.
What fluids and lubricants are specified for the JCB 550 series?
JCB recommends using genuine JCB service fluids to maintain warranty and ensure component protection. Specific fluid types include JCB Advanced engine oil for DPF-equipped low-emission engines, genuine JCB hydraulic oil with high-quality base oils and advanced additives, and JCB transmission and gearbox oils. Capacities for the fuel tank, engine oil, engine coolant, transmission, front and rear axle housings, and hydraulic system are detailed in the machine's operation and maintenance manual. Using fluids that meet JCB specifications is critical for maintaining the efficiency of the hydraulic system and the longevity of the engine.
What safety-critical fixes require dealer verification?
Safety-critical systems such as the servo-assisted, hydraulically activated, self-adjusting, oil-immersed multi-disc service brakes and the Max-Trac torque proportioning differentials require professional inspection and adjustment. Any repairs to the engine control module, fuel injection system, or hydraulic relief valves must be performed by qualified technicians using genuine JCB parts to ensure the machine operates within safe parameters. Have your dealer verify the calibration of the hydraulic system and the integrity of the braking system before returning the machine to service.
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 G550. Related factory variants of the same model family:
G550G550
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