Looking for the factory specs to rebuild your JCB JS290 - Tier III Auto excavator? This 559-page js290 tier iii auto service manual pdf (OEM #9803/9800-4) breaks down every hydraulic, electrical, and powertrain system. Inside, you get complete hydraulic schematics tracing the main control valve and pilot lines, full electrical wiring diagrams for the Advanced Management System, and step-by-step tear-down procedures for the traction motor. Open to the troubleshooting section to diagnose error codes straight from the engine control unit. Swap the air cleaner inner element at exactly 1000 hours and confirm the primary fuel filter is replaced every 500 hours to keep the Tier III engine running right. Guessing on a down machine costs you time and money. Grab this bookmarked file, pull up the exact schematic on your tablet, and get the iron moving again.
What's Inside This JCB JS290 - Tier III Auto, Tier III Auto Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 2-47 | Introduction (Identifying Your Machine), Torque Settings (Zinc Plated Fasteners and Dacromet Fasteners, Hydraulic Connections) |
| Care and Safety | 48-67 | Safety Notices (Important Information, Safety Warnings) |
| Maintenance | 68-167 | Routine Maintenance (Service Requirements, Introduction, Owner/Operator Support, Service/Maintenance Agreements, Fit for Purpose Tests for Lifting Equipment, Obtaining Replacement Parts, Health and Safety, Lubricants, Handling, New Oil, Used Oil, First Aid - Oil, Battery, Warning Symbols, First Aid - Electrolyte, Service Schedules, How to Use the Service Schedules, Calendar Equivalents, Pre Start Cold Checks, Service Points and Fluid Levels, Functional Test and Final Inspection) |
| Body & Framework | 168-205 | Technical Data (Static Dimensions, Shipping Weight, Dig Depth Chart, Air Conditioning), Basic Operation (Automatic Temperature Control System), Fault Finding (Air Conditioning) |
| Electrics | 206-305 | Basic System Operation (Circuit Symbols, Component Identification, Schematic Diagram, A.M.S, Circuit Concepts, Pulse Width Modulation, ECU1/EMS/FACIA Power Supply and Network, ECU 1 Supply to Output Drivers, Engine Throttle Control, Pump Control for Each Mode, Hardware Sensing, Auto Boost Pressure, Engine Oil Level Warning, Engine Pre Heat, Engine Automatic Warm Up, Engine Automatic Idle, Engine One Touch Idle, Engine Start/Stop, Limp Mode System, Lever Lock, Servo Isolator, Wiper, Lower Wiper, Washer, Horn, Travel Alarm, Soft/Hard, Slew Brake, Slew Lock, Slew Brake Solenoid Valve Failure, 3-Speed Travel, Work Lamps, Viscous Fan, Fuel Level Sensor/Warning, Engine Temperature Sensor/Warning, Coolant Level Warning, Air Filter Blocked Warning, Hydraulic Temperature Sensor/Warning, Alternator/No Charge Warning, Quick Hitch, Overload Caution, Beacon, Hammer Only, Scrap Magnet Option, Cab Interior Lamp, Refuelling Pump, Air Conditioning, Heated Seat, Radio and Cigar Lighter, Service Required Warning, Ems Set Menu., Ems Set + Mode Menu, Ems Set+Mode Menu.) |
| Hydraulics | 306-405 | Technical Data, Basic System Operation (Hydraulic Component Location - JS290 Tier Iii, Introduction to Hydraulic Schematic Symbols) |
| Transmission | 406-473 | Technical Data (Travel Equipment), Fault Finding (Transmission), Traction Motor / Reduction Gear (Description, Operation, Removal and Replacement, Start Up and Running in) |
| Track and Running Gear | 474-508 | Idler Wheel and Recoil Unit (Removal, Replacement), Idler Wheel (Dismantling, Assembly), Recoil Unit (Dismantling and Assembly, Dismantling |
| Engine | 509-559 | Technical Data (Engine, Engine Mounts, Engine Error Codes, Use for Identification the Repair Part) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Air Cleaner Outer Element Replacement Interval | 500 hours | p. 78 |
| Air Cleaner Inner Element Replacement Interval | 1000 hours | p. 78 |
| Fuel Pump Filter Element Replacement Interval | 500 hours | p. 78 |
| Primary Fuel Filter/Sedimenter-filter Replacement Interval | 500 hours | p. 78 |
| Engine Oil and Filter Replacement Interval | 500 hours | p. 78 |
| Servo Filter Element Replacement Interval | 500 hours | p. 78 |
| Plexus Filter Element Replacement Interval | 500 hours | p. 78 |
| Radiator Cleaning Interval | 250 hours | p. 78 |
| Radiator Mounting Bolts Torque | 65 Nm (48 lbf ft) | p. 122 |
| Bucket Side Play Clearance | approximately 0.8 mm | p. 167 |
| Shoe Bolt Tightening Torque | 840-890 Nm (620-656 lbf ft) | p. 122 |
| Boom Ram, Eye End Pin Greasing Interval | 50 Hours | p. 82 |
JCB JS290 - Tier III Auto, Tier III Auto Common Problems This Manual Covers
JCB JS290 Tier III Auto loses power under heavy load and weak digging performance p. 78
Replace the primary fuel filter and main fuel filter elements every 500 hours as shown on page 78. Inspect the air cleaner outer element for restriction. Check the engine error codes via the EMS to identify the root cause.
Manual Section: Engine Components Fault FindingExcavator hydraulic boom and stick functions are slow or completely unresponsive during normal operation p. 91
Check the hydraulic fluid level and refill to the capacity specified on page 91. Replace the servo filter element and return filter element at the 500 hours interval. Torque the pilot oil filter case to the value given in the Maintenance section.
Manual Section: MaintenanceEngine coolant temperature gauge spikes high and radiator boils over during operation p. 122
Clean the radiator core every 250 hours to remove packed debris. Inspect the radiator mounting bolts and torque them to 65 Nm (48 lbf ft) as detailed on page 122. Verify the cooling system holds pressure and check for leaks around the water pump housing.
Manual Section: MaintenanceFront end rattles during heavy digging and shows excessive bucket side play p. 82
Measure the bucket side play clearance and verify it is approximately 0.8 mm. Grease the boom ram eye end pin every 50 Hours as directed on page 82. Inspect the bucket teeth and retaining hardware for damage and replace any worn components immediately.
Manual Section: MaintenanceFrequently Asked Questions
How do I reset the service light on a JCB JS290 Tier III Auto?
The service required warning on a JCB JS290 Tier III Auto can be cancelled by pressing the ACK button on the EMS once the service interval has been reached. This is indicated by the EMS displaying the warning.
How do I clear error codes on a JCB JS290 excavator?
To clear error codes on a JCB JS290 excavator, specifically for Automatic Temperature Control (ATC) system errors, a battery reset may be required after the repair. This instruction is noted in the fault finding section for ATC error codes.
What is the torque spec for JCB JS290 track roller bolts?
For JCB JS290 track roller bolts, the tightening torque for Upper (Carrier) Roller bolts (M16/M20) is 290/550 Nm (213/405 lbf ft), and for Lower (Track) Roller bolts (M16) is 290 Nm (213 lbf ft). The checking torque for Upper (Carrier) Roller is 265/515 Nm (195/380 lbf ft) and for Lower (Track) Roller is 265 Nm (195 lbf ft).
How do I reset the JCB JS290 hydraulic filter warning?
The manual does not provide a specific procedure for resetting a hydraulic warning light on the JCB JS290. It only mentions checking the 'Auxiliary Circuit Filter Indicator' as part of routine maintenance.
Is this manual a digital download?
Instant PDF download. You get the full 559-page searchable Service Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Are there any print restrictions on this manual?
No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this JCB JS290 Tier III Auto manual include hydraulic schematics?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Document Quality
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