Looking for the Fiat Kobelco W80 technical manual PDF? All 568 pages of this factory handbook (OEM #604.06.998.02) cover the hydrostatic travel drive, axles, brakes, steering, and working hydraulics on your W80 wheel loader. Inside: wiring diagrams with symbols, fuses, and connector layouts, hydraulic circuit diagrams for both travel drive and working hydraulics, plus complete A4VG pump and A6VM motor rebuild procedures with rotary group adjustment. You also get Gleason toothing surface patterns for differential setup and a full fault-finding section for tracking down electrical gremlins. Torque the wheel nuts to 500 Nm, the cardan shaft bolts to 34 Nm, and SAE flange fittings from 100 Nm at M12 up to 250 Nm at M16. Your loader is down; get the factory numbers, not forum guesses. Bookmarked and text-searchable, this PDF opens on any device, right at the machine.
What's Inside This Fiat Kobelco W80 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety and How to Use This Handbook | 1-20 | Fundamental Safety Instructions, Operating Safety Instructions, Maintenance Safety Instructions, Precautionary Rules and Measures, Structure of the Technical Handbook, Spare Parts List As a Source |
| Allgemein General | 21-60 | Si and Additional Units, Conversion Tables, Calculation Examples, Tightening Torques |
| Service Data W80 | 61-82 | Engine, Axles and Transmission Gears, Travel Speeds, Hydraulic System, Service Fluids, Tightening Torques, Approx. Weights |
| Travel Drive | 83-111 | Hydraulic System, Circuit Diagrams, Hydrostatic Travel Drive, Adjusting Work, Hydraulic Pump, Hydraulic Motor |
| A4Vg | 113-160 | Sectional View, General Repair Instructions, Seal Kits, Sub Assembly Groups, Pump Disassembly, Rotary Group Assembly, Adjustment Instructions |
| A6Vm | 161-200 | Sectional View, General Repair Instructions, Seal Kits, Sub Assembly Groups, Rotary Group Assembly, Rotary Group Adjustment |
| Axles | 201-300 | Front Axle, Rear Axle, Axle Drive Assembly, Wheel Hub Assembly, Differential Assembly |
| Steering | 301-320 | Steering Hydraulics, Steering System, Priority Valve, Steering Cylinder, Steering Valve |
| Brakes | 321-340 | Braking System, Service Brake, Auxiliary Brake, Parking Brake, Accumulator Charging Valve, Multiple-Disk Brakes |
| Hydraulic System | 341-372 | Working Hydraulics, Control Block, Lifting Cylinder, Dumping Cylinder, Hydraulic Tank, Hydraulic Filter |
| Electrical System | 373-390 | Electrical Components, Wiring Diagrams |
| Fundamentals of Electrical Engineering | 391-444 | Engine - Repair Instructions, Assisted Starting - Safety Instructions |
| Automotive Electrical Systems in Construction Machinery Interpretation of Wiring | 445-484 | Wiring Diagram, Checking and Testing Equipment, Measuring and Testing Procedures, Troubleshooting, Fault-Finding Diagram |
| Frame | 485-490 | Loader Frame, Main Pivot Parts |
| Fittings, Pipes and Hoses | 491-544 | Steel Pipes, Hoses, Plastic Pipes, Pipe Couplings, Bulkhead Couplings, Flange Couplings |
| Sealing, Protective, Testing and Cleaning Agents | 545-568 | Rust Inhibitor, Corrosion Inhibitor, Surface Sealing Agents, Liquid Thread Adhesives, Metal Adhesives, Lubricants |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for SAE flange-system M 12 | 100 Nm | p. 57 |
| Tightening torque for SAE flange-system M 14 | 160 Nm | p. 57 |
| Wheel nut tightening torque | 500 Nm | p. 75 |
| Cardan shaft tightening torque | 34 Nm | p. 75 |
| Precharging valve pressure | 0.5 bar | p. 357 |
| By-pass valve pressure | 2.5 bar | p. 357 |
| Fan speed | 2750 min-1 | p. 365 |
| Pressure-limiting valve (K3) pressure | 80 bar | p. 365 |
| Load-holding valve set pressure | 250 bar | p. 369 |
| Charging voltage per cell | 2.3 to 2.4 volts | p. 407 |
| Admissible minimum voltage limit for starting test | 8 V | p. 408 |
| Electro-hydraulic control unit pressure | 450 bar | p. 527 |
Fiat Kobelco W80 Common Problems This Manual Covers
Fiat Kobelco W80 loader hydraulics slow and jerky when oil warms up, bucket shudders under load
Test primary pressure at the control block; the working hydraulics relief must hold 230 bar per the spec on page 345. If pressure checks good, pull the return filter: the by-pass valve opens at just 2.5 bar (page 357), so a plugged element dumps unfiltered oil straight to tank. Replace the element and check for milky, aerated oil.
Manual Section: Working Hydraulics Troubleshooting p. 345Engine cranks slowly and won't start on cold mornings, battery goes flat overnight
Load test the battery at 300 A; voltage must not drop below the 8 V minimum given on page 408 or the battery is finished. Check acid level and density in every cell. Recharge a marginal battery slowly at 6 A, then verify charging voltage reaches 2.3 to 2.4 volts per cell with the engine running.
Manual Section: Battery Troubleshooting p. 408Loader creeps at idle and loses travel power on grades, hydrostatic drive feels weak
Verify the engine pulls rated speed of 2200 rpm under load before condemning the drive; a tired engine mimics pump trouble. Then run the feed pressure and high pressure checks using the service procedures on page 94, and confirm the pump's mechanical zero position. Inspect the charge circuit filter for contamination starving the hydrostatic loop.
Manual Section: Hydrostatic Travel Drive Troubleshooting p. 94Brake pedal slow to build pressure, parking brake drags after machine sits overnight
Check accumulator precharge first; admissible operating pressure is 210 bar per page 328. Test the accumulator charging valve and confirm the braking system builds its maximum 60 bar (page 324). Bleed the service brake circuit at each axle, then verify the parking brake releases fully with the wheels chocked and engine at operating speed.
Manual Section: Braking System Troubleshooting p. 328Hydraulic oil weeping from hose flange couplings, wet spots under machine after parking
Torque the flange coupling bolts to 250 Nm (page 531) before condemning a hose; loose bolts weep long before a hose bursts. Measure the flange faces for parallel deviation over 0.3 mm, which cocks the seal and cuts the O-ring. Cut replacement hoses within the length tolerance of -4 % to +2 % shown on page 510.
Manual Section: Fittings, Pipes and Hoses p. 531Frequently Asked Questions
What are the torque specifications for the wheel loader bolts?
The tightening torque for wheel nuts on the W80 is 500 Nm. For other structural bolts, such as the front axle mounting nut, the torque is 670 Nm. p. 75
What are the replacement specifications for hydraulic hoses?
Hydraulic hoses should be replaced within stipulated and appropriate intervals, even if no safety-relevant defects have been detected. When replacing, ensure the fittings, lengths, and quality of the hoses comply with the technical requirements specified by the manufacturer. p. 9
What is the engine oil capacity for the W80?
The engine oil capacity, including the filter, is 9.0 liters. p. 74
What is the valve clearance for the engine?
The valve clearance for both inlet and exhaust valves on the engine is 0.20 mm for the inlet and 0.45 mm for the exhaust, measured when the engine is cold. p. 67
What is the procedure for bleeding the braking system?
Bleeding must be performed by two people in a specific sequence: right vent valve at the rear axle, left vent valve at the rear axle, vent at the connecting valve (brake side), vent at the connecting valve (pedal side), and finally the vent at the inching valve. The procedure must be carried out at least twice to ensure all air is removed. p. 337
Do I get instant access to this Fiat Kobelco W80 Technical Manual?
This is a 568-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Am I free to print this Fiat Kobelco W80 Technical Manual?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
Reviews
There are no reviews yet.