JCBagriculturalmini crawler excavators
Jcb 804 Super
Maintenance schedule, common problems & OEM parts breakdown
The JCB 804 Super is a mini excavator manufactured from 1999 to 2006 with an operating weight of 3506 kg (7730 lbs). It is powered by a Perkins 403-15 engine producing 14 kW (19 hp) net power. The machine features a 70.0 L (18.5 gal) hydraulic system capacity and a 48.1 L (12.7 gal) fuel tank. Configurations include standard and Super variants, with track widths of 350 mm (13.8 in) and a transport width of 1.5 m (59.1 in).
The 804 Super succeeded earlier 800-series models and was followed by the 804 Plus. It remains relevant in the used market due to its compact dimensions and accessible maintenance intervals. The machine's simple Perkins engine and lack of complex emissions systems make it a durable option for tight-space excavation.
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 804 Super specifications
Engine
| Engine Model | Perkins 403-15 |
| Gross Power | 15 kW (20.7 hp) |
| Net Power | 14 kW (19 hp) |
| 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 | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | 3506 kg (7730 lb) |
| 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 | 4.38 m (14.38 ft) |
| Transport Width | 2.15 m (7.06 ft) |
| Transport Height | 2.43 m (7.98 ft) |
| Track Gauge | 1.7 m (5.58 ft) |
| Ground Clearance | 0.36 m (1.2 ft) |
| Tail Swing Radius | 1.16 m (3.81 ft) |
| Length of Track on Ground | 2.2 m (7.22 ft) |
| Shoe Size | 0.35 m (13.78 in) |
Performance
| Travel Speed | Not documented for this exact serial range — verify with your dealer |
| Max Digging Depth | 3.54 m (11.63 ft) |
| Max Loading Height | 3.47 m (11.39 ft) |
| Max Reach Along Ground | 5.2 m (17.07 ft) |
| Max Cutting Height | 4.62 m (15.15 ft) |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | 48 L (12.7 gal) |
| Hydraulic System | 70 L (18.5 gal) |
| Engine Oil | 5 L (1.4 gal) |
| 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.
804 Super fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 5.3 l (1.4 gal) | JCB engine oil; 15W-40 viscosity per forum manual reference for similar era JCB excavators |
| Cooling system | not documented for this exact serial range — verify with your dealer | not documented for this exact serial range — verify with your dealer |
| Fuel tank | 48.1 l (12.7 gal) | Diesel fuel |
| Hydraulic system AND tank | 70.0 l (18.5 gal) | JCB hydraulic oil; ISO 46 viscosity per forum manual reference for similar era JCB excavators |
| Grease (spec only) | not applicable | JCB grease (boom grease or blue grease) |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Jcb 804 Super maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 804 Super beyond the schedule
Predictive Maintenance & Fluid Analysis
At 500 hours, take oil samples from the engine, hydraulic, and axle systems to establish a baseline. Inspect the hydraulic return filter magnet for metallic debris before disposal. Monitor the hydraulic system relief valve pressure, which should read 190 Bar (2756 psi). Check the coolant expansion bottle for brown sludge indicating silicate separation, requiring immediate coolant replacement. Track engine oil levels daily to prevent premature wear on the Perkins 403-15 engine.
Corrective & Common Repairs
Address hydraulic pump flow issues by checking the 34 LPM (9.3 GPM) pump output against specifications. Inspect the track rollers and carrier bearings, noting four rollers per side. Check the 350 mm (13.8 in) track shoes for wear and proper tension. Replace the 5.3 L (1.4 gal) engine oil filter and fuel filters at 250-hour intervals. Inspect the 55 A alternator and 12 V electrical system for charging faults.
Overhaul & Rebuild Points
At 2000 hours, measure swing ring play using a dial indicator on JS-series excavators. Inspect the boom, arm, and chassis for unauthorized welding or cracking. Check the turbocharger shaft play and wastegate function on the Perkins engine. Replace the hydraulic oil and clean the tank. Inspect the immersed brake condition and disc wear. Verify injector spray patterns using a diagnostic tool to ensure proper fuel delivery.
Seasonal & Environment Servicing
In cold climates, warm up the Perkins 403-15 engine before operation. Check the coolant level in the expansion tank to prevent freezing. Inspect the track tension to ensure proper ground clearance of 36.6 cm (14.4 in). In hot environments, monitor the hydraulic oil temperature and check the fan belt tension. Ensure the cab HVAC system is functioning to maintain operator comfort. Inspect the 48.1 L (12.7 gal) fuel tank for condensation.
804 Super common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 32/905301 | Element, Air - Primary | Air intake service | Check fitment → |
| 32/905302 | Element, Air - Safety | Air intake service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
804 Super fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| P0087 | Fuel rail pressure too low | Fuel supply restriction, faulty pressure sensor, or high-pressure pump failure | Check fuel filters and lines for blockage; verify sensor wiring integrity |
| P0088 | Fuel rail pressure too high | Faulty pressure regulator, restricted return line, or sensor error | Inspect fuel return lines for kinks or blockages; check regulator operation |
| P0110 | Intake Air Temperature Sensor 1 Circuit malfunction | Open circuit, short to ground, or failed IAT sensor | Visually inspect sensor connector for corrosion; test sensor resistance |
| P0115 | Engine Coolant Temperature Sensor 1 Circuit malfunction | Open circuit, short to ground, or failed ECT sensor | Check coolant level; inspect sensor wiring and connector pins |
| P0335 | Crankshaft Position Sensor 'A' Circuit No Signal | Failed sensor, damaged wiring harness, or faulty reluctor ring | Inspect sensor gap and wiring; verify signal with diagnostic tool |
| P0200 | Injector Circuit Open | Broken wire, loose connector, or failed injector coil | Trace injector wiring harness for damage; check connector locking tabs |
| P0201 | Injector Circuit Open – 1st Cylinder | Open circuit specific to injector 1 wiring or solenoid | Swap injector 1 with another cylinder to isolate fault; check wiring |
| P0236 | Turbocharger/Supercharger Boost Sensor 'A' Circuit Range/Performance | Faulty boost pressure sensor or vacuum leak in sensor line | Check vacuum hoses for cracks; test sensor voltage output |
| P0321-87 | CAN bus message error for engine speed from engine ECU | CAN bus communication fault, ECU power issue, or wiring short | Inspect CAN bus wiring for damage; check ECU power and ground points |
| P0336 | Crank Sensor Fault – Signal Fault | Intermittent signal, dirty sensor tip, or wiring noise | Clean sensor tip; inspect wiring for chafing near moving parts |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
804 Super attachments & work tools
Standard Buckets
The JCB 804 Super is equipped with a standard bucket capacity of 0.08 cubic meters. The machine features a 24-inch (610 mm) width option for the bucket, which must match the machine’s pin diameter and width specifications to ensure proper fitment and reduce wear.
Quick Coupler Systems
The 804 Super supports quick coupler configurations, requiring specific quick coupler pins compatible with main manufacturers for these applications. The machine includes Kingpost Pins and Bushings, Bucket and Dipper Arm, Boom Arm, Lift Boom Arm, and Offset Slew Arm components to facilitate attachment changes and joint movement.
Undercarriage & Track Components
The machine utilizes rubber tracks with a track width of 350 mm (13.8 in) and a track gauge of 170.7 cm (67.2 in). Standard shoe size is 35.1 cm (13.8 in), and the undercarriage includes four track rollers per side. Tipping links and shims are available to maintain joint precision and alignment.
Hydraulic & Engine Specifications
The JCB 804 Super uses a Perkins 403-15 engine delivering 19 HP (14 kW) net power. The hydraulic system has a pump flow capacity of 34 LPM (9.3 GPM) and a system capacity of 70.0 L (18.5 gal). The relief valve pressure is set to 190 Bar (2756 psi). Fluid recommendations include JCB branded fluids or verified equivalents for the hydraulic system, engine oil, and coolant.
All 804 Super assemblies by section
Every catalogued assembly group for the Jcb 804 Super. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
A Attachments
A2-1-2 Bucket, Rehandling
| 13***4Z | Bolt | 0 |
| 13***1Z | Nut | 0 |
| 52***00 | Bucket, Assembly, 760mm | 0 |
A2-1-1 Bucket, General Purpose
| 13***4Z | Bolt | 2 |
| 13***1Z | Nut | 0 |
| 52***00 | Bucket, Assembly, 230mm | 0 |
A2-1-5 Bucket, Trapezoidal
| 52***00 | Bucket, Trapezoidal | 1 |
A2-1-6 Bucket, 900mm
| 13***4Z | Bolt | 2 |
| 13***1Z | Nut | 6 |
| 52***00 | Bucket, 900mm | 1 |
A2-1-4 Bucket, Ditch Cleaning, Grading 1200mm Wide
| 33***12 | Bucket, Ditching/Grading1200 | 1 |
A2-1-3 Bucket, Ditch Cleaning, Grading 1200mm Wide
| 52***00 | Bucket, Ditching/Grading, 12000mm | 1 |
A3-37-1 Kerbgrab, Hydraulic, Rotator
| 20***75 | Shim | 1 |
| 20***76 | Washer | 1 |
| 20***77 | Pin, Wedge | 1 |
A3-3-1 Earthdrill, Dm1200, From 08/2007
| 98***95 | Kit, Drillmaster 1200, Auger | 1 |
A3-21-1 Kergrab, Manual, 180 Kg Swl
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 14***21 | Seal, Bonded 3/4" Bsp | 1 |
| 14***4D | Washer | 2 |
A3-21-2 Kerbgrab, Manual, 70 Kg Swl
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 14***21 | Seal, Bonded 3/4" Bsp | 1 |
| 14***4D | Washer | 2 |
A3-7-3 Grab, Kerb, Components, 70 Kg Swl
| 98***24 | Grab, Kerb 180kgswl, Manual Rotation | 1 |
| 98***32 | Body | 1 |
| 98***33 | Jaw | 1 |
A3-7-2 Grab, Kerb Manual, 70 Kg Swl
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 14***21 | Seal, Bonded 3/4" Bsp | 1 |
| 14***4D | Washer | 2 |
A3-4-1 Earth Drill
| 13***4Z | Bolt, M16x60 | 6 |
| 13***3Z | Nut, M16 | 6 |
| 14***18 | Seal, Bonded, 1/2" Bsp | 2 |
A3-6-1 Grab, Kerb Hydraulic, Max Load 70kg
| 13***6Z | Bolt, M16 X 70mm | 4 |
| 13***3Z | Nut, M16 | 4 |
| 14***15 | Washer, Seal; Replaces Khj0891 | 6 |
A3-6-10 Kerb Grab Hyraulic, Rotator
| 20***75 | Shim | 1 |
| 20***76 | Washer | 1 |
| 20***77 | Pin, Wedge | 1 |
A3-35-40 Kerb Grab
| 13***3D | Nut, Self Lock M10 | 3 |
| 13***5D | Capscrew, M10 X 20 | 3 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
A3-5-1 Cutter/Crusher
| 90***18 | Plug | 2 |
| 90***43 | Nipple, Grease | 2 |
| 90***56 | Capscrew | 12 |
A3-7-1 Grab, Kerb Manual, Max Load 70kg
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 14***21 | Seal, Bonded 3/4" Bsp | 2 |
| 16***04 | Adapter | 1 |
A3-4-4 Earth Drill, Gearbox
| 98***03 | Housing, Output | 1 |
| 98***04 | Shaft, Output | 1 |
| 98***05 | Cover, End | 1 |
A3-2-1 Hammermaster 260l
| 13***6Z | Bolt | 2 |
| 14***18 | Seal, Bonded, 1/2" Bsp | 1 |
| 14***21 | Seal, Bonded 3/4" Bsp | 3 |
A3-21-6 Kerbgrab, Manual, 70 Kg Swl
| 98***44 | Attachment, Manual Kerbgrab Base, 70kgswl | 1 |
| 98***32 | Body | 1 |
| 98***33 | Jaw | 1 |
A3-35-45 Kerb Grab, Base Unit
A3-4-3 Earth Drill Head, Components
| 13***9D | Bolt, M16x35 | 6 |
| 14***9D | Washer, M12 | 10 |
| 14***1D | Washer, M16 | 12 |
A3-4-2 Earth Drill
| 13***4Z | Bolt | 1 |
| 13***3Z | Nut, Self Lock, M8 | 1 |
| 98***10 | Tool, Pilot Bit | 1 |
A3-21-5 Kerbgrab, Manual, 180 Kg Swl
| 98***44 | Attachment, Manual Kerbgrab Base, 70kgswl | 1 |
| 98***24 | Grab, Kerb 180kgswl, Manual Rotation | 1 |
| 98***32 | Body | 1 |
A3-8-1 Kerb Grab, Quickhitch Adaptor
| 33***17 | Bracket, Quickhitch Adaptor, 802 Kerb Grab | 1 |
A3-1-1 Quickhitch
| 13***7Z | Screw, Hexagon M8 X 25 | 4 |
| 13***7Z | Bolt | 2 |
| 13***3Z | Nut, Lock, M10 | 2 |
A4-1-2 Blade, Dozer
| 13***18 | Bolt | 3 |
| 13***03 | Nut | 3 |
| 14***07 | Nipple, Grease, 45 Deg. Angle | 2 |
A4-1-1 Blade, Dozer
| 13***18 | Bolt | 3 |
| 13***03 | Nut | 3 |
| 14***07 | Nipple, Grease, 45 Deg. Angle | 2 |
B Bodywork, Cab, Loader End
B1-2-2 Assembly, Hyd & Diesel Tanks
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 3 |
| 13***8Z | Bolt, M10 X 30 | 5 |
| 13***3Z | Bolt, M10 X 55 | 2 |
B1-4-3 Floormat Assembly
| 33***94 | Mat, Floor | 1 |
| 33***39 | Strip, Kick | 1 |
| 33***01 | Strip | 1 |
B1-1-4 Upper Structure, Main Assembly
| 13***3D | Setscrew, M8 X 16mm | 1 |
| 13***5D | Setscrew, M8x20 | 2 |
| 13***5D | Setscrew, M10 X 20 | 19 |
B1-7-1 Cover, Engine, Yellow
| 23***41 | Cover, Yellow | 1 |
| 23***55 | Bonnet, Assembly Yellow | 1 |
| 33***76 | Panel, Soundproofing | 1 |
B1-3-1 Tank, Hydraulic
| 13***8Z | Bolt, M10 X 30 | 5 |
| 13***7Z | Capscrew | 4 |
| 14***16 | Seal, Bonded | 1 |
B1-1-1 Mainframe, & Counterweights
| 13***3Z | Screw, M8 X 16 | 1 |
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 2 |
| 13***2Z | Bolt, M12 X 50mm | 4 |
B1-2-1 Tank, Diesel Fuel
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 3 |
| 13***3Z | Bolt, M10 X 55 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 2 |
B1-1-3 Mainframe, Plates & Guards
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 19 |
| 13***2Z | Bolt, Hex. | 2 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
B1-4-1 Plate, Floor
| 13***7Z | Bolt, M10x25 | 9 |
| 13***3Z | Nut, Lock, M10 | 2 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 13 |
B1-7-2 Cover, Engine, Assembly
| 23***61 | Cover, Grey | 1 |
| 23***64 | Lock, Assembly; Order Separate Components - See San 10***98 | 1 |
| 23***57 | Bonnet, Assembly Grey | 1 |
B1-5-1 Bulkhead, & Soundproofing
| 13***5D | Setscrew, M6 X 20mm Long | 1 |
| 13***3Z | Bolt, M10 X 16 | 4 |
| 13***5D | Setscrew, M10 X 20 | 8 |
B1-1-2 Mainframe, & Counterweights
| 13***3Z | Screw, M8 X 16 | 1 |
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 2 |
| 13***2Z | Bolt, M12 X 50mm | 4 |
B1-6-1 Covers, Engine
| 13***8Z | Bolt | 2 |
| 13***5Z | Bolt | 1 |
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 4 |
B2-2-1 Cab & Cab Mountings
| 13***8Z | Bolt, M10 X 30 | 3 |
| 13***5Z | Bolt | 1 |
| 13***3Z | Nut, Lock, M10 | 4 |
B2-5-3 Seat, Suspension, Fabric
| 40***05 | Kit, Back Foam | 1 |
| 40***13 | Kit-Upstop/Bumpstop | 1 |
| 40***14 | Kit, Knob/Weight Adjuster | 1 |
B2-5-1 Seat Base
| 16***34 | Lock, Barrel Assembly | 1 |
| 24***13 | Grommet, 32mm Dia | 1 |
| 33***16 | Seat Base Wa | 1 |
B2-4-4 Window, Side Opening
| 14***04 | Screw | 4 |
| 23***00 | Window, Side, Opening | 1 |
| 33***47 | Rubber, Glazing | 2 |
B2-6-7 Fog Guard
| 13***5D | Setscrew, M8x20 | 2 |
| 13***5D | Setscrew, M10 X 20 | 4 |
| 14***7D | Washer, M8 Plain | 2 |
B2-4-1 Cab Glazing
| 23***07 | Seal, Weather, Front Lower | 1 |
| 23***01 | Glass, Quarter Clear, Left Hand | 1 |
| 23***04 | Glass, Rear Clear | 1 |
B2-5-7 Seat Belt
| 40***00 | Belt, Seat | 1 |
B2-4-3 Direct Glazing, Replacement Material
| 41***33 | Sealant, Dp2205 Clear, Silicone | 0 |
| 41***09 | Sealant, Black Acrylic 221, 310ml Cartridge | 0 |
| 41***09 | Adhesive, Jcb Ultrafast, 310ml Cartridge | 0 |
B2-5-4 Seat Base, Assembly
| 13***3Z | Screw, M6x16 | 2 |
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 2 |
| 13***7Z | Bolt, M10x25 | 12 |
B2-5-6 Seat, Suspension, Pvc
| 40***05 | Kit, Back Foam | 1 |
| 40***13 | Kit-Upstop/Bumpstop | 1 |
| 40***14 | Kit, Knob/Weight Adjuster | 1 |
B2-6-6 Seat Base Pods
| 13***07 | Bolt, M8 X 25 | 1 |
| 13***8Z | Screw, M8x30 | 4 |
| 13***3Z | Nut | 2 |
B2-2-2 Canopy & Mountings
| 13***1Z | Bolt, M10 X 10 | 4 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 4 |
| 23***05 | Panel, Canopy Roof Trim | 1 |
B2-5-5 Seat, Static, Fabric
| 40***05 | Kit-Seat Frame | 1 |
| 40***05 | Kit, Back Foam | 1 |
| 40***09 | Adjuster, Height | 1 |
B2-2-3 Cab, Abi Assembly
| 12***00 | Mirror, With Bracket | 1 |
| 12***91 | Washer, Nylon | 2 |
| 12***99 | Screw | 2 |
B2-4-2 Windscreen, Assembly
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 6 |
| 13***7Z | Screw, Hexagon M8 X 25 | 4 |
| 13***1Z | Nut, M8 | 1 |
B2-3-2 Lockback, Door Retainer
| 13***3Z | Nut, Self Lock, M6 | 3 |
| 33***04 | Spacer, Lockback Packer, 5 Degree | 1 |
| 33***05 | Lockback Spacer | 1 |
B2-3-1 Cab Door
| 12***69 | Bolt, Striker Assembly, Cab Door Lock | 1 |
| 13***8D | Setscrew, M8 X 30mm | 4 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
B2-1-1 Cab, Abi Assembly
| 12***00 | Mirror, With Bracket | 1 |
| 12***91 | Washer, Nylon | 2 |
| 12***99 | Screw | 2 |
B2-5-2 Seat, Static, Pvc
| 40***05 | Kit-Seat Frame | 1 |
| 40***05 | Kit, Back Foam | 1 |
| 40***09 | Adjuster, Height | 1 |
B4-6-1 Link, Bucket, Option
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 1 |
| 23***01 | Link, Tipping | 1 |
| 23***07 | Bush | 2 |
B4-2-1 Boom
| 13***7Z | Bolt | 2 |
| 13***3Z | Nut, Lock, M10 | 3 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 1 |
B4-3-20 Dipper, 1660mm Long
| 13***8Z | Bolt, M10x80 | 1 |
| 13***9D | Bolt | 2 |
| 13***3D | Nut, Self Lock M10 | 5 |
B4-3-2 Dipper, 1400mm
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***08 | Bush | 2 |
| 23***07 | Bush | 2 |
B4-1-1 Kingpost
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 0 |
| 13***8Z | Bolt, M12 X 30 | 0 |
| 13***2Z | Bolt, M6 X 50 | 0 |
B4-4-1 Links, Bucket, From December 03
| 13***9D | Bolt | 2 |
| 13***3D | Nut, Self Lock M10 | 2 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 3 |
B4-3-1 Dipper, 1100mm Long
| 13***8Z | Bolt, M10x80 | 1 |
| 13***9D | Bolt | 2 |
| 13***3D | Nut, Self Lock M10 | 5 |
B4-2-10 Boom
| 13***7Z | Bolt | 2 |
| 13***3Z | Nut, Lock, M10 | 3 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 1 |
B4-3-10 Dipper, 1400mm Long
| 13***8Z | Bolt, M10x80 | 1 |
| 13***9D | Bolt | 2 |
| 13***3D | Nut, Self Lock M10 | 5 |
B4-5-1 Links, Bucket, Up To December 03
| 13***9D | Bolt | 2 |
| 13***3D | Nut, Self Lock M10 | 2 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 3 |
B5-5-1 Oils,Greases & Paint
| 23***38 | Paint, Yellow Gloss, 1 Litre | 1 |
| 40***01 | Oil, Engine, Sae30, 200 Litres | 1 |
| 40***02 | Oil, Engine, Sae30, 5 Litres | 1 |
B5-4-1 Fire Extinguisher
| 13***05 | Bolt | 0 |
| 13***03 | Nut | 0 |
| 13***03 | Nut | 2 |
B5-2-1 Transfers, Labels &, Handbooks
| 81***55 | Label, Diesel | 0 |
| 81***56 | Label, Hydraulic Fluid | 0 |
| 81***80 | Label, Drain Every 50 Hours | 0 |
B5-3-1 Tool Kit
| 40***01 | Grease, Mpl-Ep, 400g. | 1 |
| 82***06 | Spanner, D.O.E., 1" X 1.1/8" A/F | 1 |
| 82***29 | Spanner, D.O.E. 13 X 17mm A/F | 1 |
B5-2-2 Labels, Safety, & Warning
| 81***63 | Decal, Sound Pressure Level, External 77 Lpa | 1 |
| 81***64 | Label, Sound Level, 78 Lpa | 1 |
| 81***65 | Label, Noise, 80 Lpa | 1 |
B5-1-1 Transfers, Labels &, Handbooks
| 81***90 | Decal, Jcb, Insignia 375 X 300mm | 1 |
| 81***61 | Decal, Jcb Insignia (Black), 204mm X 250mm | 2 |
| 81***34 | Label, 803 | 1 |
B5-2-3 Labels, Operation, & Control
| 23***00 | Label, Fuse Box, German | 1 |
| 23***00 | Label, Fuse Box, French | 1 |
| 23***00 | Label, Fuse Box, Dutch | 1 |
C Electrics-Machine, Cab & Engine
C1-1-3 Harness Locations
| 71***84 | Maxi Fuse 80amp | 1 |
| 71***00 | Lead, Earth | 1 |
| 72***15 | Harness, Main | 1 |
C1-1-4 Pods, Mounting Frame
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 2 |
| 13***7D | Setscrew, M8x25 | 5 |
| 13***8D | Setscrew, M8 X 30mm | 8 |
C1-1-2 Console, Right Hand
| 13***3Z | Nut, Self Lock, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 2 |
| 24***06 | Grommet, Blind, Noml Dia 20mm | 1 |
C1-1-1 Console, Left Hand
| 13***3Z | Nut | 2 |
| 13***1Z | Nut, M8 | 4 |
| 13***3Z | Nut, Self Lock, M8 | 3 |
C1-1-5 Latching Relay, Slew/Swing Change
| 71***86 | Relay, Latching | 1 |
C2-1-2 Battery Isolator
| 13***5D | Setscrew, M6 X 20mm Long | 2 |
| 13***3D | Nut, M6 Lock | 2 |
| 14***6D | Washer, M6 Plain | 4 |
C2-4-1 Alternator, 55amp
| 02***52 | Fan, Alternator | 1 |
| 71***01 | Capacitor, Suppression | 1 |
| 71***02 | Regulator, & Brush Box Assembly | 1 |
C2-1-1 Battery & Leads
| 13***3D | Setscrew | 2 |
| 13***5D | Setscrew, M10 X 20 | 1 |
| 13***3D | Nut, M6 Lock | 2 |
C2-6-1 Engine Auto-Shutdown, Optional
| 02***38 | Box, Control | 1 |
| 02***39 | Connector | 1 |
| 14***04 | Washer, Spring | 2 |
C2-5-2 Alternator Mountings
| 02***28 | Screw | 1 |
| 02***78 | Nut | 1 |
| 02***51 | Washer | 1 |
C2-5-1 Alternator Mountings
| 02***78 | Nut | 2 |
| 02***44 | Washer | 2 |
| 02***51 | Washer | 1 |
C2-3-1 Motor, Starter
| 71***00 | Motor, Starter, 12v | 1 |
| 71***01 | Bush | 1 |
| 71***02 | Solenoid | 1 |
C2-4-2 Alternator, 65amp
| 13***8D | Nut, M5 Standard Flanged | 2 |
| 13***8D | Nut, M6 Standard Flanged | 1 |
| 23***88 | G.A, Power Unit (803) | 1 |
C2-3-2 Motor, Starter
| 71***00 | Motor, Starter, 12v | 1 |
| 71***02 | Solenoid | 1 |
| 71***06 | Holder, Brush | 1 |
C2-2-1 Electrics, Engine
| 02***01 | Washer | 1 |
| 02***63 | Connector | 1 |
| 70***21 | Switch, Vacuum Pressure | 1 |
C3-1-1 Electrics, Cab
| 24***07 | Grommet | 0 |
| 70***02 | Light, Interior | 0 |
| 72***54 | Bulb, 12v-10w - Festoon | 0 |
C3-5-2 Beacon, Low Height
| 70***00 | Beacon, Low Height | 1 |
C3-2-2 Heater Assembly
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 4 |
| 13***1Z | Setscrew, M6 X 12mm Long | 4 |
| 13***1Z | Nut | 4 |
C3-4-2 Worklights, Cab, Canopy
| 13***3Z | Screw, M8 X 16 | 4 |
| 24***06 | Grommet, 16mm Diameter | 2 |
| 33***05 | Plate, Mounting, Worklight | 2 |
C3-4-1 Work Light, Boom
| 70***29 | Light, Work | 1 |
| 72***27 | Harness, Boom Light | 1 |
C3-4-3 Worklights, Cab, Canopy
| 13***5D | Setscrew, M10 X 20 | 4 |
| 13***3D | Nut, Self Lock M10 | 2 |
| 14***3Z | Washer | 4 |
C3-6-3 Radio Cassette, Installation
| 14***6Z | Washer, M6 | 4 |
| 33***32 | Box, Speaker | 2 |
| 71***00 | Aerial | 1 |
C3-5-1 Light, Beacon, Hazard Warning, Optional
| 70***01 | Bulb, 12v 55w, Halogen | 1 |
| 70***01 | Lens, Amber, 146mm Dia | 1 |
| 70***00 | Beacon, 12v, (155mm Tall) | 1 |
C3-2-5 Heater Unit Details
| 15***01 | Motor, 12 Volt | 1 |
| 30***70 | Heater, Motor, Assembly | 1 |
| 30***76 | Tie, Cable | 1 |
C3-3-1 Motor, Wiper
| 14***9Z | Washer | 1 |
| 23***14 | Washer, Wiper | 1 |
| 23***10 | Cap | 1 |
D Controls-Machine, Engine
D1-8-2 Controls, Auxiliary/Swing
| 58***93 | Pivot, Auxiliary Pedal | 1 |
| 58***83 | Pedal, Auxillary/Swing | 1 |
| 82***51 | Capscrew | 2 |
D1-2-1 Lever, Dozer
| 12***59 | Ring, Tolerance | 1 |
| 13***9Z | Setscrew, M8x35 | 1 |
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 3 |
D1-3-2 Slew Lock, Transport
| 13***0Z | Bolt, M8x40 | 2 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 6 |
D1-1-1 Pedals, Tracks - Option
| 13***0Z | Bolt, M10 X 40 | 2 |
| 13***3Z | Nut, Lock, M10 | 2 |
| 14***8D | Washer, M10 | 4 |
D1-3-3 Controls, Track Levers
| 13***7Z | Bolt, M10x25 | 4 |
| 13***2Z | Nut, M8 | 1 |
| 23***09 | Shaft | 2 |
D2-1-1 Control, Throttle
| 13***3Z | Screw, M6x16 | 2 |
| 13***7Z | Bolt, M10x25 | 2 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 2 |
E Hydraulics & Air
E1-3-8 Circuit, Upper Structure, Hydraulics Sae
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-7-40 Circuit, Auxiliary, 1660mm Long Dipper
| 13***8D | Setscrew, M8 X 30mm | 2 |
| 13***7D | Setscrew, M10 X 25mm Long | 6 |
| 14***7D | Washer, M8 Plain | 2 |
E1-3-3 Circuit, Upper Structure, Hydraulics Iso
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-7-20 Circuit, Auxiliary, 1660mm Long Dipper
| 13***8D | Setscrew, M8 X 30mm | 2 |
| 13***7D | Setscrew, M10 X 25mm Long | 6 |
| 14***7D | Washer, M8 Plain | 2 |
E1-3-4 Circuit, Servo Hydraulics, Iso
| 23***01 | Sleeve, Polyurethane | 2 |
| 64***45 | Hose, Servo Str/90 1200mm | 1 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 3 |
E1-8-20 Conversion, Auxiliary, Single To Double Acting
| 16***56 | Adaptor | 1 |
| 16***59 | Adaptor, 3/4", Includes O-Ring 17***05 | 2 |
| 61***00 | Hose | 1 |
E1-10-1 O Rings, Hydraulic Hoses
| 23***06 | O Ring, 3/8"Bsp | 1 |
| 23***10 | O Ring, 1/2"Bsp | 1 |
| 23***11 | O Ring, 5/8"Bsp | 1 |
E1-2-10 Circuit, Servo Hydraulics, Iso
| 23***01 | Sleeve, Polyurethane | 2 |
| 64***45 | Hose, Servo Str/90 1200mm | 1 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 3 |
E1-4-10 Circuit, Track & Dozer, Undercarriage
| 61***00 | Hose, 1/2"Bsp X 1015mm | 4 |
| 63***35 | Hose | 2 |
| 63***36 | Hose | 1 |
E1-2-12 Circuit, Servo Hydraulics, Sae
| 23***01 | Sleeve, Polyurethane | 4 |
| 64***45 | Hose, Servo Str/90 1200mm | 1 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 2 |
E1-8-1 Circuit, Auxiliary, Single Acting, Mainframe
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 1 |
| 24***07 | O Ring | 1 |
| 24***07 | O Ring | 1 |
E1-3-10 Circuit, Slew/Swing Pilot, 803/804
| 23***21 | G.A, Swing_slew Pilot Ass, For 803/4 Leak Free | 1 |
| 25***12 | Valve, Dual Solenoid | 1 |
| 64***42 | Hose, Servo Str/90 530mm | 1 |
E1-10-3 Hoses, Dig End
| 23***01 | Block, Hose | 2 |
| 61***00 | Hose | 4 |
| 61***84 | Hose, 1/2 Bsp | 2 |
E1-3-6 Circuit, Upper Structure, Hydraulics Sae
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-2-11 Circuit, Servo Hydraulics, Sae
| 23***01 | Sleeve, Polyurethane | 2 |
| 64***45 | Hose, Servo Str/90 1200mm | 2 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 1 |
E1-6-1 Circuit, Excavator
| 13***3Z | Screw, M8 X 16 | 6 |
| 13***9Z | Screw, M10x35mm | 2 |
| 13***3Z | Nut, Lock, M10 | 2 |
E1-2-14 Circuit, Servo Hydraulics, Sae
| 23***01 | Sleeve, Polyurethane | 2 |
| 64***45 | Hose, Servo Str/90 1200mm | 2 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 1 |
E1-3-1 Circuit, Upper Structure, Hydraulics Sae
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-3-7 Circuit, Upper Structure, Hydraulics Iso
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-7-30 Circuit, Auxiliary, 1400mm Long Dipper
| 13***8D | Setscrew, M8 X 30mm | 2 |
| 13***7D | Setscrew, M10 X 25mm Long | 6 |
| 14***7D | Washer, M8 Plain | 2 |
E1-3-9 Circuit, Upper Structure, Hydraulics Iso
| 12***03 | Tie, Cable, L=300mm X W=7.6mm | 5 |
| 13***8Z | Screw, Hex., Head | 1 |
| 13***1Z | Nut | 1 |
E1-10-2 Hoses, Dig End
| 23***01 | Block, Hose | 2 |
| 61***00 | Hose | 4 |
| 74***09 | Hose | 2 |
E1-2-6 Circuit, Servo Hydraulics, Sae
| 23***01 | Sleeve, Polyurethane | 2 |
| 61***00 | Hose | 1 |
| 61***70 | Hose, 1/4"Bsp X 550mm | 1 |
E1-2-13 Circuit, Servo Hydraulics, Iso
| 23***01 | Sleeve, Polyurethane | 2 |
| 64***45 | Hose, Servo Str/90 1200mm | 1 |
| 64***26 | Hose, 1/4"Bsp X 1300mm | 1 |
E1-7-1 Circuit, Auxiliary, 1100mm Long Dipper
| 13***8D | Setscrew, M8 X 30mm | 2 |
| 13***7D | Setscrew, M10 X 25mm Long | 6 |
| 14***7D | Washer, M8 Plain | 2 |
E1-1-1 Circuit, Neutral, Hydraulics
| 13***7Z | Bolt, M10x25 | 1 |
| 14***11 | Seal, Bonded | 3 |
| 22***05 | Clip, Jubilee | 10 |
E1-7-10 Circuit, Auxiliary, 1400mm Long Dipper
| 13***8D | Setscrew, M8 X 30mm | 2 |
| 13***7D | Setscrew, M10 X 25mm Long | 6 |
| 14***7D | Washer, M8 Plain | 2 |
E1-8-10 Circuit, Auxiliary, Double Acting, Mainframe
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 1 |
| 16***56 | Adaptor | 1 |
| 16***59 | Adaptor, 3/4", Includes O-Ring 17***05 | 2 |
E1-4-1 Circuit, Track & Dozer, Undercarriage
| 61***30 | Hose | 2 |
| 61***00 | Hose | 4 |
| 63***18 | Hose | 2 |
E2-1-5 Pump Drive, Assembly
| 13***7Z | Bolt | 3 |
| 23***01 | Plate | 1 |
| 23***51 | Gear | 1 |
E2-1-1 Pump, Assembly
| 20***24 | Bearing | 1 |
| 20***70 | Pump | 1 |
| 20***92 | Kit, Seal | 1 |
E2-3-1 Motor, Slew, Assembly
| 20***41 | O Ring; Use 20/90***34 | 1 |
| 20***12 | Barrel, Assembly | 1 |
| 20***01 | Motor, Assembly; San 10***35 | 1 |
E2-3-2 Motor, Slew, Assembly
| 20***41 | O Ring; Use 20/90***34 | 1 |
| 20***12 | Barrel, Assembly | 1 |
| 20***01 | Motor, Assembly; San 10***35 | 1 |
E2-4-1 Motor, Track, Assembly
| 13***07 | Capscrew | 0 |
| 20***24 | Bearing | 1 |
| 20***86 | Casing, Motor Assembly; San 10***35 | 1 |
E2-1-2 Pump,And Adapters
| 13***9Z | Screw, M10x35mm | 4 |
| 14***08 | Washer | 4 |
| 16***56 | Adaptor | 3 |
E2-1-3 Pump Drive, Assembly
| 13***7Z | Bolt | 3 |
| 23***01 | Plate | 1 |
| 23***51 | Gear | 1 |
E2-1-6 Pump, Drive, Assembly
| 13***7Z | Bolt | 3 |
| 23***01 | Plate | 1 |
| 23***51 | Gear | 1 |
E2-1-4 Pump, Gear Pump
| 16***56 | Adaptor | 3 |
| 20***01 | Kit-Seal, Complete, Pump | 1 |
| 20***02 | Rod, Tie | 4 |
E3-10-3 Coupling, Rotary, Twin Speed Tracking
| 13***8D | Setscrew, M8 X 30mm | 4 |
| 13***1Z | Nut, M8 | 4 |
| 14***7D | Washer, M8 Plain | 4 |
E3-11-1 Filter, Hydraulic
| 13***07 | Capscrew | 4 |
| 14***26 | Washer, Seal | 1 |
| 24***11 | O Ring | 1 |
E3-8-8 Valve, Boom Boost, Optional
| 13***0Z | Bolt | 2 |
| 13***3Z | Nut, Self Lock, M6 | 2 |
| 14***6Z | Washer, M6 | 2 |
E3-1-1 Boom Boost, Switching
| 17***02 | Plug | 1 |
| 25***49 | Controller, Rh Switch Boom Boost | 1 |
| 64***51 | Hose, 1/4bspx650 | 1 |
E3-2-16 Valve, Section, Boom
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 1 |
| 25***43 | Poppet | 1 |
E3-2-18 Valve, Section, Outlet
| 25***16 | O Ring | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 1 |
| 25***22 | Plug, Assembly | 4 |
E3-2-13 Valve, Section, Track Left Hand
| 25***03 | Screw; Use 25/60***01 | 0 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***26 | Plate, Seal | 0 |
E3-7-1 Valve, Boom Boost, Optional
| 13***0Z | Bolt | 2 |
| 13***3Z | Nut, Self Lock, M6 | 2 |
| 14***6Z | Washer, M6 | 2 |
E3-14-2 Coupling, Rotary
| 13***05 | Capscrew, M8 X 20 | 6 |
| 32***82 | Plug | 1 |
| 33***47 | Housing | 1 |
E3-2-12 Dipper Section, Dipper
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 1 |
| 25***43 | Poppet | 1 |
E3-1-9 Valve, Assembly, 6 Spool & Adapters
| 13***09 | Capscrew | 3 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 3 |
| 14***8Z | Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also N524275 & 52***55, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also M524275 & 52***55 | 3 |
E3-8-6 Control, Right Hand, Boom Boost
| 13***3Z | Nut, Self Lock, M6 | 4 |
| 14***6Z | Washer, M6 | 4 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 6 |
E3-2-17 Valve, Section, Track Right Hand
| 25***01 | Screw | 0 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***26 | Plate, Seal | 0 |
E3-2-15 Valve, Section, Bucket
| 25***42 | Valve, Arv | 2 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***43 | Poppet | 1 |
E3-3-11 Valve Section, Swing
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***43 | Poppet | 1 |
| 25***44 | Spring | 1 |
E3-2-11 Valve, Section, Boom Boost
| 25***16 | O Ring | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 2 |
E3-17-1 Kit, Dipper Judder 803
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 1 |
| 25***00 | Valve, Check | 1 |
| 61***00 | Hose, 1/2"Bsp X 320mm | 1 |
E3-3-15 Valve Section, Mrv
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 1 |
| 25***03 | Valve, Relief | 0 |
E3-6-3 Kit,Plug, Integrated Valves
| 32***10 | Kit-Plug & O'Ring | 1 |
| 32***11 | Kit-Plug & O'Ring | 1 |
E3-10-2 Joint, Rotary
| 16***50 | Adaptor | 1 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 4 |
| 16***52 | Adaptor, 3/8bsp X 9/16 Sae | 6 |
E3-1-3 Controller, Joystick Right Hand
| 13***3Z | Nut, Self Lock, M6 | 4 |
| 14***6Z | Washer, M6 | 4 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 6 |
E3-10-1 Coupling, Rotary
| 13***9Z | Setscrew, M8x35 | 4 |
| 13***3Z | Nut, Self Lock, M8 | 4 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
E3-3-13 Valve Section,Dipper
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***43 | Poppet | 1 |
| 25***44 | Spring | 1 |
E3-13-3 Valve, Slew & Swing
| 13***5Z | Bolt, Star Drive, M8 X 65mm | 2 |
| 13***3Z | Nut, Self Lock, M8 | 2 |
| 14***7Z | Washer, Plain, M8; Replaces Khn1550, San 12620 | 4 |
E3-3-10 Valve, Section, Dozer
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 1 |
| 25***25 | Cap, Detent | 1 |
E3-2-10 Valve, Section, Outlet
| 25***16 | O Ring | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 1 |
| 25***22 | Plug, Assembly | 2 |
E3-15-1 Accumulator
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 1 |
| 23***12 | Bracket, Mounting | 1 |
| 32***55 | Accumulator, 35cc | 1 |
E3-3-14 Valve Section, Auxiliary Valve
| 25***01 | Screw | 2 |
| 25***16 | O Ring | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
E3-5-1 Valve, Dipper Boost Dump
| 24***05 | O Ring | 1 |
| 24***07 | O Ring | 5 |
| 25***02 | Kit-Seal | 1 |
E3-6-2 Valve, Maintenance, Servo Pressure
| 16***02 | Adapter | 1 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 4 |
| 24***05 | O Ring | 1 |
E3-8-7 Valve Control, Right Hand
| 13***3Z | Nut, Self Lock, M6 | 4 |
| 14***6Z | Washer, M6 | 4 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 6 |
E3-16-1 Valve, Track Motor
| 20***86 | Casing, Motor Assembly; San 10***35 | 1 |
| 99***18 | Kit-Seal | 1 |
E3-7-2 Valve, Dump
| 16***54 | Adapter, 1/2bsp X 3/4 Sae | 4 |
| 16***64 | Adapter | 1 |
| 45***00 | Adapter, Pressure Test Point, 9/16-18unf Male; Replaces Khj0067, San 13845 | 1 |
E3-6-1 Valve, Maintenance, Servo Pressure
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 5 |
| 25***01 | Cartridge, Pressure Reducing | 1 |
| 25***10 | Kit-Seal | 1 |
E3-3-16 Valve Section, Inlet
| 25***16 | O Ring | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***22 | Plug, Assembly | 1 |
E3-1-2 Controller, Boom Boost
| 13***3Z | Nut, Self Lock, M6 | 4 |
| 14***6Z | Washer, M6 | 4 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 6 |
E3-2-14 Valve Section, Mid Inlet, Main Relief
| 25***09 | Relief Valve | 2 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***19 | Kit-Seal, Relief Valve | 2 |
E3-3-12 Valve Section, Slew
| 25***43 | Valve, Section Slew | 1 |
| 25***12 | O Ring, Interface, Valve Sections | 0 |
| 25***44 | Spring | 2 |
E3-1-8 Valve Assembly, 5 Spool & Adapters
| 13***09 | Capscrew | 3 |
| 14***18 | Seal, Bonded, 1/2" Bsp | 2 |
| 14***8Z | Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also N524275 & 52***55, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also M524275 & 52***55 | 3 |
E3-1-6 Valve, 6 Port, 803/4
| 13***09 | Capscrew | 3 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 3 |
| 14***8Z | Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also N524275 & 52***55, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also M524275 & 52***55 | 3 |
E3-1-4 Controller, Joystick Left Hand
| 13***3Z | Nut, Self Lock, M6 | 4 |
| 14***6Z | Washer, M6 | 4 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 6 |
E3-5-2 Valve, Bucket Anti Cav Kit
| 14***21 | Seal, Bonded 3/4" Bsp | 2 |
| 16***55 | Adaptor | 1 |
| 16***58 | Adaptor, M/M, Includes O-Ring 24***07 | 1 |
E3-1-5 Valve Assembly, 5 Port, 803/4
| 13***09 | Capscrew | 3 |
| 14***8Z | Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also N524275 & 52***55, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also M524275 & 52***55 | 3 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 8 |
E4-4-2 Ram, Dipper, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 22***26 | Circlip | 1 |
| 23***56 | O Ring | 1 |
E4-1-2 Ram, Swing, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***08 | O Ring | 1 |
| 23***08 | O Ring | 1 |
E4-5-3 Ram, Bucket, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 16***54 | Adapter, 1/2bsp X 3/4 Sae | 2 |
| 23***03 | Head, Piston | 1 |
E4-5-1 Ram, Bucket, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***03 | Head, Piston | 1 |
| 23***05 | Bush | 1 |
E4-3-2 Ram, Boom, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***56 | O Ring | 1 |
| 23***10 | O Ring | 2 |
E4-3-1 Ram, Boom, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***05 | Head, Piston | 1 |
| 23***06 | Screw, Set | 1 |
E4-6-6 Protection Plates, Boom Ram
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 1 |
| 13***7Z | Bolt, M10x25 | 2 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 1 |
E4-9-2 Page Not Needed
| 12***15 | Bush, Spring | 1 |
| 14***11 | Seal, Bonded | 2 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
E4-4-3 Ram, Dipper, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***03 | Head, Piston | 1 |
| 23***06 | Screw, Set | 1 |
E4-2-2 Ram, Dozer, L.F
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 2 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 1 |
| 14***07 | Nipple, Grease, 45 Deg. Angle | 1 |
E4-2-1 Ram, Dozer, O.R.F.S
E4-5-2 Ram, Bucket, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***55 | O Ring | 1 |
| 23***08 | O Ring | 1 |
E4-9-3 Kerb Grab, Ram
| 12***15 | Bush, Spring | 1 |
| 14***11 | Seal, Bonded | 2 |
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
E4-4-8 Ram, Dipper, 556/60255
| 23***04 | Nipple, Grease; San 10***40 | 2 |
| 23***06 | Screw, Set | 1 |
| 23***08 | Bush | 1 |
E4-4-1 Ram, Dipper, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***03 | Head, Piston | 1 |
| 23***06 | Screw, Set | 1 |
E4-6-2 Protection Plates, Bucket Ram
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 1 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 1 |
| 23***02 | Plate, Support | 1 |
E4-6-5 Protection Plates, Boom Ram
| 13***5Z | Screw, M10 X 20mm Long; Use With Single Piece Casing. To Gearbox Number 445/143/831 Or 445/144/455, Screw, M10 X 20mm Long | 1 |
| 13***7Z | Bolt, M10x25 | 2 |
| 14***8Z | Washer, Plain M10; San 23620 Ref Dave Bickerton Confirms Identic, Al To 33***8z Rationalise Parts | 1 |
E4-4-4 Ram, Dipper, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 22***26 | Circlip | 1 |
| 23***56 | O Ring | 1 |
E4-3-3 Ram, Boom, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***05 | Head, Piston | 1 |
| 23***06 | Screw, Set | 1 |
E4-5-4 Ram, Bucket, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***55 | O Ring | 1 |
| 23***08 | O Ring | 1 |
E4-6-1 Protection Plates, Boom Ram
| 13***07 | Bolt | 2 |
| 14***07 | Washer | 0 |
| 21***13 | Pin, Cotter, Split | 0 |
E4-1-1 Ram, Swing, O.R.F.S
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***08 | O Ring | 1 |
| 23***08 | O Ring | 1 |
E4-3-4 Ram, Boom, L.F
| 14***01 | Nipple, Grease, Straight, 1/8 Bsp | 2 |
| 23***56 | O Ring | 1 |
| 23***10 | O Ring | 2 |
F Track/Slew Gearbox
F4-1-2 Gearbox, Slew
| 13***11 | Screw | 6 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 1 |
| 16***52 | Adaptor, 3/8bsp X 9/16 Sae | 2 |
F4-3-1 Gearbox, Track, Assembly
| 13***9D | Bolt, M12x35 | 9 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 2 |
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 2 |
F4-1-1 Gearbox, Slew
| 13***11 | Screw | 6 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 1 |
| 16***52 | Adaptor, 3/8bsp X 9/16 Sae | 2 |
F4-4-3 Gearbox Components, Track
| 20***09 | Ring, Snap | 1 |
| 20***69 | Plug, And Seal | 1 |
| 20***76 | Cover, Plate | 1 |
F4-4-2 Gearbox Components, Track
| 20***09 | Ring, Snap | 1 |
| 20***69 | Plug, And Seal | 1 |
| 20***76 | Cover, Plate | 1 |
F4-4-1 Gearbox Components, Track
| 20***69 | Plug, And Seal | 1 |
| 20***64 | Kit-Body | 1 |
| 20***67 | Kit-Carrier, 2 | 1 |
F4-3-3 Gearbox, Track, Assembly
| 13***9D | Bolt, M12x35 | 9 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 2 |
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 2 |
F4-2-1 Gearbox Components, Slew
| 20***09 | Ring, Snap | 1 |
| 20***14 | Circlip | 7 |
| 20***26 | Casing, Output, Assembly | 1 |
F4-3-2 Gearbox, Track, Assembly
| 13***9D | Bolt, M12x35 | 9 |
| 16***51 | Adaptor, 1/4"Bsp X 9/16"Sae | 2 |
| 16***55 | Adaptor, 39.5mm Long. M/M 1/2" X 7/8" | 2 |
J Track & Running Gear, Undercarriage
J1-3-1 Roller, Track Top
| 21***2Z | Pin, Cotter | 1 |
| 23***10 | Roller, Assembly Top; San25344 Remove Part, Replace With 33***08, Ref Joe Vazquez/Sue Chadwick Ref Email | 2 |
| 82***52 | Nut, Castle | 1 |
J1-2-2 Idler Wheel, & Recoil Unit
| 13***4Z | Bolt, M12 X 60mm | 4 |
| 13***1Z | Capscrew | 2 |
| 14***03 | Washer | 1 |
J1-1-4 Undercarriage, & Slew Ring
| 13***3D | Setscrew, M8 X 16mm | 4 |
| 13***5D | Setscrew, M10 X 20 | 6 |
| 13***7D | Setscrew, M10 X 25mm Long | 4 |
J1-5-1 Track Assemblies
| 13***8D | Setscrew, M12 X 30 | 12 |
| 13***9D | Screw, M12x35mm Long | 6 |
| 14***9D | Washer, M12 Spring | 18 |
J1-2-1 Idler Wheel, & Recoil Unit
| 13***4Z | Bolt, M12 X 60mm | 4 |
| 13***1Z | Capscrew | 2 |
| 14***03 | Washer | 1 |
J1-1-1 Undercarriage, & Slew Ring
| 13***5D | Setscrew, M10 X 20 | 6 |
| 13***7D | Setscrew, M10 X 25mm Long | 4 |
| 13***0D | Bolt, M12 X 40 | 4 |
J1-1-3 Undercarriage, & Slew Ring
| 13***3D | Setscrew, M8 X 16mm | 4 |
| 13***5D | Setscrew, M10 X 20 | 6 |
| 13***7D | Setscrew, M10 X 25mm Long | 4 |
J1-5-2 Track Assemblies
| 13***8D | Setscrew, M12 X 30 | 12 |
| 13***9D | Screw, M12x35mm Long | 6 |
| 14***9D | Washer, M12 Spring | 18 |
J1-1-2 Undercarriage, & Slew Ring
| 13***3D | Setscrew, M8 X 16mm | 4 |
| 13***5D | Setscrew, M10 X 20 | 6 |
| 13***7D | Setscrew, M10 X 25mm Long | 4 |
J1-5-3 Track Assemblies
| 13***8D | Setscrew, M12 X 30 | 12 |
| 13***9D | Screw, M12x35mm Long | 6 |
| 14***9D | Washer, M12 Spring | 18 |
J1-4-1 Roller, Track Bottom
| 13***9Z | Screw, Set, (Bolt M16 X 35) | 2 |
| 23***50 | Shaft | 1 |
| 23***51 | Seal | 2 |
M Engine 403c-15
M1-3-1 Block Assembly, Hl Build
| 02***01 | Plug, D=15 | 1 |
| 02***02 | Plug, D=25 | 1 |
| 02***04 | Plug, D=40mm | 6 |
M1-4-1 Crankshaft, Bearings, Pistons & Con-Rods, Hl Build
| 02***42 | Key | 1 |
| 02***43 | Pin | 1 |
| 02***64 | Crankshaft, Assembly | 1 |
M1-5-1 Fans, Pulleys, & Fan Belt, Hl Build
| 02***12 | Pulley, Single, D=83mm; Not Included In Assembly. Must Be Used With Spacer 02/10***13., Pulley, Single, D=83mm | 1 |
| 02***52 | Fan, Alternator | 1 |
| 02***68 | Key | 1 |
M1-1-1 Engine, Complete, Hl Build
| 01***65 | Engine, Complete 403c-15, Nat/Aspirated,20.7kw | 1 |
| 01***83 | Engine, Complete 403c-15, Nat/Aspirated 65 Amp | 1 |
| 01***92 | Engine, Complete, 403c-15, 31 Bhp | 1 |
M1-8-1 Engine Mountings
| 13***8Z | Bolt, M10 X 30 | 8 |
| 13***8Z | Bolt, M12 X 30 | 2 |
| 13***9Z | Screw, M12 X 35mm, Screw, M12 X 35mm; M12 X 35. Items 21 & 22 Are Used On 23***00 And 23***00 Throttle Brackets | 4 |
M1-6-1 Timing Case, Camshaft & Gears, Hl Build
M1-7-1 Flywheel & Housing
| 02***08 | Washer | 2 |
| 02***34 | Washer, Spring | 2 |
| 02***96 | Plate, Engine Back | 1 |
M1-7-2 Flywheel & Housing
| 02***08 | Washer | 2 |
| 02***34 | Washer, Spring | 2 |
| 02***71 | Plate | 1 |
M1-6-2 Timing Levers, Arms & Springs, Hl Build
| 02***89 | Pin | 1 |
| 02***96 | Nut | 1 |
| 02***07 | Circlip | 2 |
M2-2-1 Rocker Assembly, Push Rods & Tappets, Hl Build
| 02***67 | Screw, Adjusting | 6 |
| 02***68 | Nut | 6 |
| 02***71 | Tappet | 6 |
M2-4-1 Cold Start, Installation, Hl Build
| 02***38 | Rail | 1 |
| 02***58 | Nut | 1 |
| 02***59 | Washer | 1 |
M2-3-1 Rocker Cover, Hl Build
| 02***73 | Breather, Gauze | 1 |
| 02***78 | Seal | 1 |
| 02***98 | Gasket, Rocker Cover | 1 |
M2-5-1 Lifting Plates, Engine, Hl Build
| 02***93 | Bracket, Engine Lifting | 1 |
| 02***94 | Bracket, Engine Lifting | 1 |
| 02***12 | Screw | 3 |
M2-1-1 Cylinder Head, Hl Build
| 02***02 | Plug, D=25 | 6 |
| 02***42 | Seal, Inlet Valve | 3 |
| 02***43 | Spring, Valve | 6 |
M3-3-1 Filter, Air
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 4 |
| 22***11 | Clip, Jubilee | 3 |
| 32***01 | Element, Air - Primary | 1 |
M3-4-1 Exhaust System
| 02***38 | Gasket | 1 |
| 13***5Z | Bolt | 3 |
| 13***5Z | Screw, Hexagon M8 X 20mm Long | 1 |
M3-2-1 Manifold, Exhaust, Hl Build
| 02***96 | Nut | 2 |
| 02***85 | Stud | 2 |
| 02***32 | Screw | 4 |
M3-1-1 Manifold, Induction, Hl Build
M4-1-1 Pump, Water, Hl Build
| 02***96 | Nut | 3 |
| 02***89 | Plug, D=30mm | 1 |
| 02***36 | Screw | 3 |
M4-3-3 Radiator, Fittings & Mountings
| 13***3D | Setscrew | 8 |
| 13***5Z | Bolt | 2 |
| 13***3D | Setscrew, M8 X 16mm | 2 |
M4-4-1 Radiator & Hoses
| 12***03 | Hose, Overflow Assembly | 1 |
| 12***32 | Cap, Expansion Bottle | 1 |
| 13***3Z | Screw, M6x16 | 2 |
M4-4-3 Radiator & Hoses
| 12***03 | Hose, Overflow Assembly | 1 |
| 12***32 | Cap, Expansion Bottle | 1 |
| 13***3Z | Nut | 2 |
M4-2-1 Thermostat, Housing, Inlet & Outlet, Hl Build
| 02***96 | Nut | 2 |
| 02***89 | Plug, D=30mm | 1 |
| 02***43 | Gasket | 1 |
M4-4-2 Radiator & Hoses
| 12***03 | Hose, Overflow Assembly | 1 |
| 12***32 | Cap, Expansion Bottle | 1 |
| 22***09 | Clip, Jubilee | 4 |
M4-3-1 Radiator, Fittings & Mountings
| 13***3D | Setscrew | 6 |
| 13***5Z | Bolt | 2 |
| 13***3D | Setscrew, M8 X 16mm | 2 |
M4-3-2 Radiator, Fittings & Mountings
| 13***3D | Setscrew | 6 |
| 13***5Z | Bolt | 2 |
| 13***3D | Setscrew, M8 X 16mm | 2 |
M5-2-1 Pump, Oil, & Relief Valve, Hl Build
M5-4-1 Filter, Oil, Hl Build
| 02***26 | Connector | 1 |
| 02***28 | Bolt, Banjo | 1 |
| 02***59 | Washer | 4 |
M5-1-1 Sump, Oil, Hl Build
| 02***02 | Screw | 3 |
| 02***97 | Screw | 26 |
| 02***02 | O Ring | 1 |
M6-5-1 Pump, Fuel Lift
| 02***69 | O Ring | 1 |
| 02***92 | Screw, M6x16 | 2 |
| 17***00 | Pump, Fuel Lift | 1 |
M6-4-1 Filter, Fuel
| 13***8Z | Bolt, M10 X 30 | 2 |
| 14***8Z | Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also N524275 & 52***55, Washer, Spring M10; Replaces 60***8r & 60***08, Replaces Luu0105-San 12222, Used On Outlet Adapter, Item 5. Also M524275 & 52***55 | 2 |
| 20***07 | Bolt, Centre | 1 |
M6-2-1 Injectors, Fuel, & Injection Pipes, Hl Build
| 02***96 | Nut | 2 |
| 02***14 | Damper | 4 |
| 02***61 | Pipe, Fuel Injection, No.1 | 1 |
M6-1-1 Pump, Fuel Injection, & Shut-Off Solenoid, Hl Build
| 02***78 | Nut | 3 |
| 02***65 | Screw | 1 |
| 02***01 | Washer | 2 |
M6-3-1 Fuel System
| 13***7Z | Screw, Hexagon M8 X 25 | 1 |
| 13***8Z | Bolt, M10 X 30 | 2 |
| 13***9Z | Bolt, M10 X 35 | 2 |
M6-6-1 Filter, Fuel Sediment
| 20***11 | Plug | 0 |
| 20***12 | Washer | 0 |
| 32***02 | Nut, Cap | 1 |
M8-1-1 Gasket Sets, Hl Build
| 02***64 | Kit-Gasket, (1.4mm) | 1 |
| 02***65 | Kit-Gasket, (1.3mm) | 1 |
804 Super serial number reference
For machines in these serial ranges, the identification plate is located on the front face of the upper structure (either the right or left side). A duplicate serial is also stamped into the chassis frame. Verify applicability with a JCB dealer.
| Prefix | Identifies | Notes |
|---|---|---|
| 00734834-00735365 | JCB 804 Super Mini Crawler Excavator; applies to parts catalog 9802 5409 | |
| 00735366-00735999 | JCB 804 Super Mini Crawler Excavator; applies to parts catalog 9802 5470 |
Frequently asked questions
What engine does the JCB 804 Super use?
The JCB 804 Super uses a Perkins 403-15 engine producing 14 kW (19 hp) net power.
What is the operating weight of the JCB 804 Super?
The operating weight is 3506 kg (7730 lbs).
What model replaced the JCB 804 Super?
The JCB 804 Plus succeeded the 804 Super.
What 804 Super owners discuss
What are the known powertrain and hydraulic behaviors for the JCB 804 Super?
The machine utilizes a split hydraulic pump where one section powers the bucket and swing. Operators report that the hydraulic system can overheat during heavy use, causing a loss of power to the upper structure and bucket while tracks and blade remain functional. A thermal breaker may trip under these conditions, cutting power until the machine cools. The slew gearbox is a known failure point; early models (circa 1995) experienced total gearbox failure, and seals for the hydraulic motor are difficult to source. Final drive oil changes are recommended regularly, though specific intervals vary by service history.
What undercarriage or wear patterns are typical for this machine type?
The JCB 804 Super features a 350 mm track width. Pins and bushings in the boom, stick, and bucket linkage are subject to natural wear and require periodic replacement to maintain digging precision. The power slide mechanism on the boom relies on wedge plates; wear on these plates is a common failure mode that causes sliding issues, often mistaken for hydraulic problems. The grade blade linkage may loosen over time, causing the blade to fall down when raised.
What engine quirks are associated with the JCB 804 Super series?
The machine is equipped with a JCB 444 engine. Common issues include starting difficulties, which are the most frequent reason owners seek assistance. Unusual noises, such as deep rhythmic knocking that increases under load, indicate serious internal engine problems. The fuel system may require bleeding if air enters the lines; some owners report fuel pickup pipe cracks in the tank bracket area. Coolant must be changed at recommended intervals to prevent silicate separation, which manifests as brown sludge in the expansion bottle.
What are the common electrical or sensor issues?
Electrical faults can mimic hydraulic failures. A thermal breaker located on the top of the machine may trip when the engine warms up, stopping power to the upper structure hydraulics. Diagnostic trouble codes related to the engine ECU include crankshaft position sensor faults (P0335), cam signal limits (P0340), and intake air temperature sensor malfunctions (P0112). High side driver faults and MAF sensor errors can also trigger torque reduction modes.
What should be checked when buying a used 804 Super?
Verify the slew gearbox condition, as early units are prone to failure. Check the fuel tank for cracks in the pickup pipe bracket and ensure the tank is clean of debris. Test the grade blade for hydraulic drift and check the power slide wedge plates for wear. Inspect the hydraulic pump housing for cracks. Confirm the engine starts cold and runs without knocking. Check for brown sludge in the coolant expansion bottle. Verify the serial number range (the OEM part reference-the OEM part reference or the OEM part reference-the OEM part reference) to ensure correct parts manual applicability.
What fluids and lubricants are specified for the JCB 804 Super?
The hydraulic system requires ISO 46 hydraulic oil with a capacity of approximately 17 liters. Engine oil capacity is 3.5 liters. The cooling system holds 4.5 liters. The fuel tank capacity is 5.0 liters. JCB recommends using verified JCB branded fluids or equivalent alternatives that meet their specifications. Coolant must be changed to prevent silicate separation.
What are the key specifications and dimensions of the JCB 804 Super?
The JCB 804 Super is a mini excavator manufactured from 1999 to 2006. Operating weight varies by configuration, ranging from 3.3 tons (1999-2000) to 3.5 tons (2004-2006), with specific listings citing 7,730 lbs (3,506 kg) and 8,000 kg (17,637 lb). Net horsepower is 19.8 hp. Maximum digging depth is 3,930 mm (154.7 in). Maximum dump height is 4,430 mm (174.4 in). Transport dimensions are 4.38 m length, 1.5 m width, and 2.43 m height. Hydraulic pump flow is 98 L/min (25.9 gal/min).
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 804 Super. Related factory variants of the same model family:
804 Super
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