Part of the Case Repair Manuals.
Ground drive hydraulics take a long stretch of this 794-page Case Service Manual, OEM Rac 6-22460, and the same treatment carries through header drive, steering, engine, and cab on the 8860, 8860HP, 8870, and 8880 windrower tractors. This Case 8860, 8870, 8880 service manual PDF walks the charge pump, tandem pump, and ground drive motors through operation, schematics, tests, and troubleshooting before the electrical section opens into full machine wiring you can trace circuit by circuit. Header lift and flotation valve work ends with the adjustment numbers, not a shrug. Set flotation by watching for a gauge drop of 1379 kPa (200 psi); your oil pressure alert lamp should light at 15 psi, with shutdown at 10. Bookmarked and text-searchable, it rides along wherever the machine sits.
What's Inside This Case 8860, 8860HP, 8870, 8880 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 3-48 | Introduction, Safety Rules, General Machine Specifications, And Standard Torque Specifications, Maintenance and Lubrication, Decals |
| Engine | 49-120 | Engine Removal and Installation, Engine Accessories, Engine Service Information |
| Fuel System | 121-140 | Fuel System and Engine Controls, Fuel Injection Pump and Fuel Injectors |
| Electrical System | 141-231 | Removal and Installation of Electrical Components, Specifications, Schematics, And Troubleshooting, Instruments |
| Steering | 232-277 | Removal and Installation of Steering Components, Steering Control Linkage Troubleshooting and Adjustment |
| Power Train | 278-467 | Ground Drive Hydraulic System Specifications, Operation, Schematics, Troubleshooting, And Tests, Charge Pump, Tandem Pump, Ground Drive Motors |
| Brakes | 468-477 | Parking Lock |
| Hydraulic System | 478-695 | Hydraulic System Specifications, Operation, Schematics, Troubleshooting, And Tests, Cleaning the Hydraulic System, Header Drive Pump, Header Drive System |
| Chassis | 696-794 | Air Conditioner Components, Air Conditioning Troubleshooting, Cab, Seat, And Windshield, Walking Beam |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Engine oil pressure alert lamp illumination | 15 psi | p. 217 |
| Engine oil pressure shut down lamp illumination | 10 psi | p. 217 |
| Flotation gauge pressure drop | 1379 kPa (200 psi) | p. 508 |
| Ground Drive System Relief Pressure | 37 925 kPa | p. 14 |
| Header Lift System Relief Pressure | 17 237 kPa | p. 14 |
| 8860, 8860HP | ||
| Engine Oil Capacity with filter change | 10.5 L | p. 14 |
| Hydraulic System Total Capacity | 87 L | p. 14 |
| Accumulator Charge Pressure | 5516 kPa | p. 14 |
| 8870 | ||
| Engine Oil Capacity with filter change | 10.5 L | p. 15 |
| Hydraulic System Total Capacity | 87 L | p. 15 |
| 8880 | ||
| Engine Oil Capacity with filter change | 15 L | p. 16 |
| Hydraulic System Total Capacity | 98.4 L | p. 16 |
Case 8860, 8860HP, 8870, 8880 Common Problems This Manual Covers
Case 8860 windrower hard starting or no start, engine cranks but never fires
Check the starting circuit troubleshooting on pages 187 and 188 before condemning the injection pump. Verify battery voltage, then crank and watch the oil pressure lamp on page 217, which should go out above 15 psi. If fuel delivery is weak, bleed the injectors.
Manual Section: Starting Circuit TroubleshootingHeader drive loses power or makes a whine under load in heavy hay
Check the header drive troubleshooting on pages 504 through 507 with the oil at operating temperature. Verify reservoir level first, since total hydraulic capacity is 87 L on the 8870, and low oil aerates the charge circuit. Inspect the pump case drain for metal, then gauge system pressure against the hydraulic schematic.
Manual Section: Header Drive System TroubleshootingHeader raises slowly or unevenly and drifts down while cutting
Test the flotation circuit using pages 508 through 510. Charge the accumulator and watch the gauge: a drop of more than 1379 kPa (200 psi) means a leaking cylinder or valve seal. Verify header lift relief pressure at 17 237 kPa per the specifications on page 14, then replace the lift cylinder seals before the next cutting window.
Manual Section: Header Lift and Flotation Circuit Troubleshooting p. 508Engine knock from the bottom end on a high hour machine, oil pressure lamp flickers at idle
Measure hot oil pressure at idle immediately. The shutdown lamp lights at 10 psi per page 217, and anything near that with a knock means pull the pan. Inspect the rod bearings and journals against the engine service procedures. Drain and refill with 15 L on an 8880 after reassembly.
Manual Section: Engine Service InformationErratic steering or the machine pulls to one side during ground travel
Set tire pressure first: 137 kPa in the drive wheels and 68.9 kPa in the tailwheel per the specifications on page 14. Then work the ground drive troubleshooting on pages 290 through 295 with the oil warm. Verify ground drive relief pressure holds 37 925 kPa, and inspect the steering control linkage for worn pivot bushings.
Manual Section: Ground Drive Hydraulic System TroubleshootingCab air conditioning blows warm or cools only intermittently during long cutting days
Clean the condenser screen and cab fresh air filter first, since chaff blocks airflow faster than anything else in the field. Then follow the air conditioning troubleshooting on pages 749 and 750 to check compressor clutch engagement and sight glass condition. Inspect the belt tension and replace any hose showing oil staining at the crimps.
Manual Section: Air Conditioning TroubleshootingFrequently Asked Questions
What are the torque specifications for the drive wheel bolts on a Case 8860 tractor?
The drive wheel bolts for the Case 8860 Windrower Tractor must be tightened to a torque of 271 N-m (200 LB-FT). It is recommended to check the torque of the wheel hardware after 3 to 5 hours of operation. p. 14
What is the total hydraulic system oil capacity for the Case 8860 Windrower Tractor?
The total hydraulic system oil capacity for the Case 8860 is 87 liters (23 U.S. gallons), with a reservoir capacity of 76 liters (20 U.S. gallons). p. 14
What is the correct engine oil capacity for the Case 8860 Windrower Tractor when changing the filter?
The engine oil capacity for the Case 8860 Windrower Tractor, including the oil filter change, is 10.5 liters (11 U.S. quarts). p. 14
What is the required nitrogen precharge pressure for the accumulator on the Case 8860?
The accumulator on the Case 8860 Windrower Tractor must be precharged with nitrogen to 5516 kPa (800 PSI). p. 14
What is the correct procedure for checking the engine oil level on the Case 8860?
Check the engine oil level daily before starting the engine. Ensure the oil level is between the ADD and FULL marks on the dipstick located on the left side of the engine, and always check with a cold engine. p. 32
Will this Case 8860 Service Manual download right away?
A 794-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this Case 8860 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.
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