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Part of the Case Repair Manuals.
Factory answers for the Case 880 excavator sit in one book: OEM publication 9-72127, the 431 page Case 880 service manual PDF that settles the pressures, clearances, and rebuild sequences no forum thread agrees on. The hydraulics section walks the equipment circuit from the main pump through the center swivel to the drive and swing motors, testing and troubleshooting each component in turn, and a wiring diagram maps the charging system from battery through ammeter to generator and regulator. Troubleshooting charts run the engine from hard starting and misfires through overheating and oil consumption, each path ending at a cause you can act on. When a boom cylinder comes apart on your bench, torque the piston retaining bolt to 1500 to 1800 ft. lbs. and seat the seal gland at 100 to 200 ft. lbs. A parked 880 burns crew hours by the shift. Bookmarks and a full text layer land you on the right section in seconds.
What's Inside This Case 880 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 4-37 | General Engine Specifications, Scheduled Maintenance, Lubrication Guides |
| General Engine Maintenance | 38-53 | Engine RPM Check, Throttle Linkage Adjustment, Engine Removal, Engine Inspection, Engine Installation |
| Air Cleaner System Maintenance | 54-73 | Dust Collection Cup, Main Element Cleaning, Air Induction System Do's and Don'ts, Restriction Indicator |
| Engine Diagnosis | 74-103 | Engine Hard to Start, Engine Misfires, Engine Knocks, Engine Overheating, Engine Lacks Power, Oil Consumption |
| Cylinder Head, Valve Train and Camshaft | 104-147 | Cylinder Head Reconditioning, Valve Seat Replacement, Camshaft Bushing Replacement, Valve Lifter Inspection, Valve Timing |
| Fuel System and Filters | 148-197 | Fuel System Filters, Fuel Injection Pump, Fuel Injectors, Fuel System Flow, Injection Pump Timing |
| Lubricating System | 198-213 | Balancer Oil Pump, Oil Filter, Heat Exchanger, Oil Flow Diagrams, Two and Three Gear Balancer |
| Cooling System | 214-235 | Water Manifold, Water Pump, Thermostats, Cooling System Cleaning, Safety Precautions |
| Fuel System | 236-281 | Fuel System and Filters, Robert Bosch Fuel Injection Pumps, Roosa Master Fuel Injectors |
| Hydraulics | 282-361 | Equipment Hydraulics System, Hydraulic System and Component Trouble Shooting, Main Hydraulic Pump, Hydraulic Center Swivel and Drive Motors, Hydraulic Valves, Hydraulic Cylinders |
| Track and Suspension | 362-389 | Track and Suspension System |
| Drive Train | 390-399 | Final Drive Transmissions |
| Brakes | 400-409 | Drive Brake and Swing Brake Assemblies |
| Electrical | 410-431 | Electrical System, Charging System, Trouble Shooting Procedures |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Piston retaining bolt torque | 1500-1800 ft. lbs. | p. 344 |
| Gland torque | 100-200 ft. lbs. | p. 344 |
| Bearing covers torque | 22 ft./lbs. | p. 360 |
| Pillow block bolts torque | 200-240 ft./lbs. | p. 395 |
| Transmission Mounting Bracket bolt torque | 810-990 ft./lbs. | p. 395 |
| Engine Oil Pressure (at rated speed) | 45 to 55 PSI | p. 4 |
| Fuel Injector Opening Pressure | 2800 PSI | p. 4 |
| Cylinder Head Bolt Torque | 200 to 210 ft. lbs. | p. 35 |
| Main Relief Valve Pressure | 2250 PSI | p. 301 |
| Swing Cushion Relief Valve Pressure | 1350 PSI | p. 303 |
| Track Roller Bolt Torque | 320-330 foot pounds | p. 383 |
| Engine Idling Speed | 725 to 775 RPM | p. 4 |
Case 880 Common Problems This Manual Covers
Case 880 swing gear case bolts keep loosening, swing pinion broke, upper structure shifts and clunks under load
Pull the swing drive cover and check every gear case bolt for movement before condemning the pinion. Replace stretched hardware, then reinstall the pinion bearing covers and torque them to 22 ft. lbs. per page 360. Test the swing cushion relief; it should hold 1350 PSI. Add stop blocks if the case still walks.
Manual Section: Swing Circuit Troubleshooting p. 360Boom drifts down under load, hydraulic oil weeping past the cylinder rod seals
Check for oil at the rod gland first; a wet rod means seals, not the control valve. Pull the cylinder, replace the seal kit, and torque the piston retaining bolt to 1500 to 1800 ft. lbs. as shown on page 344. Torque the gland 100 to 200 ft. lbs. with a spanner wrench, then cycle and recheck for drift.
Manual Section: Hydraulics p. 344Growling noise and heat from the final drive, sprocket shaft wobbles at the drive end
Jack the track clear and check the sprocket shaft for radial play by hand. Drain the final drive and inspect the oil for metal. Replace worn sprocket shaft bearings, then tighten the pillow block bolts to 200 to 240 ft. lbs. per page 395. Verify lubricant level against the maintenance schedule on page 8 before running.
Manual Section: Final Drive Transmission Troubleshooting p. 395Engine cranks slowly or won't turn over at all after the machine sits overnight
Test both batteries in the 24 volt circuit under load and clean the ground straps before condemning the starter. Follow the starter motor troubleshooting in the electrical section on page 410. If it cranks but won't fire, bleed the fuel system and check injector opening pressure against the 2800 PSI spec on page 4.
Manual Section: Electrical System Troubleshooting p. 410Hydraulic pump whines, boom and arm move slow, oil foaming in the reservoir
Check reservoir oil level and fill before anything else; foaming usually means air on the suction side. Inspect the suction line fittings and tighten any that seep. Test main relief pressure at the pump; the manual sets it at 2250 PSI on page 301. If pressure won't hold, work through the hydraulic troubleshooting procedures starting on page 282.
Manual Section: Hydraulic System Troubleshooting p. 301Frequently Asked Questions
How do I troubleshoot a Case 880 engine that is hard to start or will not start?
Start at the fuel supply: a closed shut-off valve or air in the lines will stop a Case 880 cold. Confirm the starter turns the engine at 200 to 300 RPM, since diesel needs that speed to light. If it still will not fire, check the injection pump timing at 30 degrees before top dead center and inspect the injectors for proper seating. p. 57
What are the torque specifications for the cylinder head bolts on the Case 880?
Torque the cylinder head bolts to 200 to 210 ft. lbs. The tightening sequence sits with the cylinder head reconditioning procedure. p. 35
What is the correct valve tappet clearance for the Case 880 diesel engine?
For the Case 880 diesel engine, the exhaust valve tappet clearance is .020 inch (hot) or .025 inch (cold). The intake valve tappet clearance is .015 inch (hot and cold). p. 4
What is the engine oil capacity for the Case 880 excavator?
The crankcase capacity for the Case 880 engine is 10 quarts. When performing an oil filter change, the capacity increases to 11 quarts. p. 4
What is the correct fuel injection pump timing for the Case 880?
The fuel injection pump timing for the Case 880 engine is 30 degrees before top dead center (port closing). p. 4
Will this Case 880 Service Manual download right away?
All 431 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Is printing allowed for this Case 880 Service Manual?
Yes, print as many copies as you want. Most mechanics print just the section they need and carry that to the shop floor.
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