Part of the Case Repair Manuals.
Looking for the official Case-steyr CS78, CS86, CS94 service manual PDF? Grab exactly that in this 624-page factory guide (OEM #Sva 7-96911) covering the complete engine, transmission, and Ehr-B hydraulic systems for these tractors, plus compatible CS68, CS75, and CS78a variants. Inside, pull up full wiring diagrams, complex hydraulic schematics, and extensive error code tables for the combi instrument. Open to step-by-step procedures detailing injection pump rebuilds, fold power take-off shaft service, and steering axle disassembly. Heat the starter ring gear to 150-200 °C before pressing it onto the flywheel, verify the 0.425-0.600 mm overlap, and confirm the transmission holds approximately 30 liters of oil. Don't waste hours chasing electrical faults blind. This bookmarked file opens instantly on your tablet, letting you jump straight to the fix.
What's Inside This Case-steyr CS78, CS86, CS94 Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 3 | Cylinder Block, Cylinder Head, Camshaft, Crankshaft, Pistons, Piston Rings and Piston Pins, Lubrication System |
| For the User | 9 | Engine Serial Number |
| Safety Regulations | 10 | - |
| Engine Data | 11 | Lifting the Engine |
| Technical Data | 12-58 | Construction, Cylinder Block, Cylinder Head, Crankshaft, Con-Rods and Pistons, Lubrication System, Intake / Exhaust System |
| Fuel System | 59-78 | Fuel System Components and Operation, Injection Pump Service Procedures, Fuel and Timing Checks |
| Electrical | 79-238 | Combi Instrument Overview, Combi Instrument Troubleshooting, Combi Instrument Test Values and Coding, Circuit Diagram Index, Central Print and Eccu Layout |
| Steering System | 239-276 | General Description and Specifications, Axle Configurations, Special Tools, Disassembly, Reassembly and Settings |
| Transmission | 277-430 | Troubleshooting and Technical Data, Transmission Diagrams and Sections, Intermediate Housing and Clutch Operator Service, Fold Power Take-Off Shaft Service |
| Hydraulic System | 431-624 | Ehr-B System Overview, Functional Description and Controls, Position Sensor and Power Sensors, Electronic Control Unit and Hydraulic Circuit, Control Valve Ehr 5-Oc Operation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Starter ring gear, overlap on flywheel | 0.425 - 0.600 mm | p. 15 |
| Starter ring gear, heating temperature for pressing onto flywheel | 150 - 200 °C | p. 15 |
| Injection Pump Gear Retaining Nut Torque | 90 Nm | p. 63 |
| Injector Opening Pressure | 270 + 8 bar | p. 63 |
| Transmission Oil Capacity | approx. 30 l | p. 289 |
| Main Shaft Nut Torque (Transmission) | 150 Nm | p. 291 |
| Bevel Pinion Nut Torque (Transmission) | 450 Nm | p. 291 |
| Front Axle Differential Support Bolt Torque (M12 x 35) | 135 Nm + Loctite 270 | p. 251 |
Case-steyr CS78, CS86, CS94 Common Problems This Manual Covers
Case-Steyr CS86 Sisu diesel engine cranks weakly or won't start despite a fully charged battery
Check the starter ring gear overlap on the flywheel referenced on page 15; spec calls for 0.425 to 0.600 mm, replace if teeth are chipped or worn. Test the glow plug circuit for continuity and voltage drop at each plug. Verify the starter motor draws proper cranking amperage before condemning the battery.
Manual Section: Technical Data p. 15Hydraulic lift power drops or loader movement gets erratic after two to three hours of operation
Check the EHR-B hydraulic fault code reference for an active E04 low pressure code. Inspect the lift cylinder seals and pump seals for internal bypass as oil heats up during the shift. Measure system pressure at operating temperature and compare against the position sensor readings. Replace worn pump seals rather than just topping off fluid.
Manual Section: Hydraulic SystemTransmission slips under load or grinds harshly when shifting into gear while operating
Check clutch disc wear and hydraulic pressure in the power shift circuit per the transmission troubleshooting section beginning page 277. Drain and refill with the correct 30 liter transmission oil capacity from page 289. If you disassemble, torque the main shaft nut to 150 Nm and bevel pinion nut to 450 Nm per the specs on page 291.
Manual Section: Transmission p. 277Engine burns excessive oil and blows blue smoke after several hundred hours of operation
Check valve seat and piston ring wear against the clearance specifications on page 12. Follow the service procedures on page 26 to inspect cylinder bore taper and ring end gap. Remove the valve cover and inspect for a failed gasket contributing to external leaks alongside internal consumption. Replace piston rings and valve seat inserts as a set, not individually.
Manual Section: Technical Data p. 12Injectors run rough or engine idles poorly with fuel timing seemingly off during cold start
Check injector opening pressure against the spec of 270 +/- 8 bar listed on page 63 for CS78, CS86, and CS94. Torque the injection pump gear retaining nut to 90 Nm during reinstall. Test each injector on a pop tester and replace any nozzle that doesn't hold pressure or sprays unevenly. Bleed the fuel system fully before restarting.
Manual Section: Fuel System p. 63Frequently Asked Questions
How to reset error codes on Case CS 78 CS 86 CS 94 Steyr M 9078 M 9094?
The manual indicates that error codes on the EHR-B and EFH systems are displayed continuously until the fault has been remedied, at which point the diagnosis LED goes out. There is no manual reset procedure for general error codes; they clear automatically once the underlying issue is resolved. p. 564
What do I get after purchasing this Case-steyr CS78, CS86, CS94 manual?
You get a 624-page searchable PDF (308 MB) that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this Case-steyr CS78, CS86, CS94 manual?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Are hydraulic system diagrams in this Case-steyr CS78, CS86, CS94 manual?
Included. Hydraulic system schematics cover all circuits, control valves, and component specifications for the Case-steyr CS78, CS86, CS94.
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