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Part of the Case Repair Manuals.
This 678-page Case Corporation 880B Excavator Service Manual (OEM #9-68144) covers the 336BD and 336BDT engines that power the 880 Excavator line, from cylinder sleeves and crankshaft journals down to the fuel injection pump. Open it up and you get wiring harness diagrams for the electrical system, hydraulic schematics for the equipment pump circuits, and a full troubleshooting section covering track, power train, and brake system faults. You also get torque charts and maintenance interval tables that walk you through fuel filter changes and cleaning procedures without guesswork. Set the No. 1 hydraulic pump section output at 42 gpm (168 L/min), and dial the main relief valve to 2650 psi (18,270 kPa) before you close it back up. Stop chasing hydraulic gremlins with a pressure gauge and a hunch; this manual gives you the exact numbers. Bookmarked and searchable, so you jump straight to the boom, swing motor, or engine section without flipping pages.
What's Inside This Case Case 880B, 880 Excavator Manual
| System | Pages | Key Topics |
|---|---|---|
| Series - General | 3-38 | General Engine Specifications, Detailed Engine Specifications, General Maintenance, Torque Charts, General Cleaning Instructions, Safety Rules |
| Series - Engine | 39-252 | Engine Diagnosis, Engine Tune-Up, Cylinder Head, Valve Train and Camshaft, Cylinder Block, Sleeves, Piston and Rods, Crankshaft |
| Series - Fuel System | 253-302 | Fuel System and Filters, Fuel Injection Pump, Fuel Injectors, Fuel Tank, Fuel Lines and Fuel Storage |
| Series - Electrical | 303-366 | Maintenace Service, Diagnostic Tests and Checks, Wiring Harness, Starter, Starter Solenoid and Starter Relay Switch, Alternator |
| Series - Track and Suspension | 367-414 | Maintenance Service, Troubleshooting, Track Chain and Shoes, Track Rollers, Carrier Rollers, Idlers and Sprockets |
| Series - Power Train | 415-454 | Maintenance Service, Troubleshooting, Drive Motor Circuit and Lines, Drive Motor, Final Drive Transmission (Drive) |
| Series - Brake System | 455-466 | Maintenance Service, House Brake, Track Digging Brake |
| Series - Equipment Hydraulics | 467-606 | Maintenance Service, Diagnostic Tests and Checks, Equipment Hydraulic Pump, Excavator Control Valves, Swing Motor Hydraulics, Hoist Cylinder Hydraulics |
| Series - Mounted Equipment | 607-678 | Control Levers and Linkage, Swing Reducer Gear Box, “E” Boom, “Y” Boom, Turntable Leveler Assembly, Turntable, Bearing and Related Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic pump No. 1 section rated output | 42 gpm (168 L/min) | p. 522 |
| Hydraulic pump No. 2 section rated output | 42 gpm (168 L/min) | p. 522 |
| Fuel filter replacement interval (1st and 2nd stage) | Every 500 hours or when loss of engine horsepower is indicated. | p. 254 |
| Fuel system operating pressure (w/preliminary filter) | 20 to 30 PSI (1.4 to 2.1 kg/cm2) | p. 254 |
| Thermostat start to open temperature | 175°F (79°C) | p. 202 |
| Thermostat fully open temperature | 202°F (94°C) | p. 202 |
| Hydraulic pump shaft seal area and thrust plates wear allowance | 0.002 in. (.050 mm) | p. 522 |
| Cylinder gland torque | 100-200 Ib-ft (136-271 Nm) | p. 595 |
| Engine Bore | 4-5/8 Inches | p. 3 |
| Engine Stroke | 5 Inches | p. 3 |
Case Case 880B, 880 Excavator Common Problems This Manual Covers
Engine temperature gauge climbs steadily and engine overheats during sustained heavy operation
Pull the thermostat and check that it starts opening at 175°F (79°C) and reaches full open by 202°F (94°C), per page 202. Replace any thermostat that doesn't meet those readings, as directed on page 206. Also check the fan belt tension and radiator fins for packed debris before returning the machine to service.
Manual Section: Series - Engine p. 202Battery warning light stays on or charging system won't hold voltage at idle
Test alternator output directly off the unit; rated output is 24 volts at 42 amperes as listed on page 341. Check the wiring harness and ground connections in the electrical diagnostic section starting on page 303 before swapping the alternator. Loose or corroded ground straps mimic a failed alternator and waste a parts change.
Manual Section: Series - Electrical p. 341Frequently Asked Questions
What are the torque specifications for the Case 880B hydraulic pump bolts?
For the hydraulic pump, the tie bolt torque is 200 lb-ft (270 Nm). When installing the cover retaining bolts, Grade 5 bolts should be torqued to 17 to 20 ft. lbs. (23 to 27 Nm) and Grade 8 bolts to 24 to 29 ft. lbs. (33 to 39 Nm). p. 190
How do you fix case 880B excavator engine won't start or stalls repeatedly after bleeding the fuel system?
Check the troubleshooting procedures first. Reinstall every plug removed during bleeding; a missing plug pulls air into the line and creates a lock. Confirm fuel system operating pressure at the preliminary filter reads 20 to 30 PSI (1.4 to 2.1 kg/cm2), then re-bleed from the lift pump forward.
How do you fix hydraulic pump loses pressure or overheats under heavy digging load with no visible external leak?
Check page 489 first; low output on a worn or damaged pump won't always show a leak. Verify the control valve spool returns fully to neutral and isn't hanging up, per page 527. Test the No. 1 circuit main relief setting against 2650 PSI (18,270 kPa) and the No. 2 circuit against 2500 PSI (17,240 kPa) on page 522. p. 522
How do you fix pilot control stick goes sluggish or unresponsive even after the pilot filter was already changed?
Start at the equipment hydraulics diagnostic tests beginning on page 467. Pull the pilot filter element and inspect it for collapse or bypassing rather than just clogging; a collapsed element restricts flow even when it looks clean. Check the pilot valve for internal leakage that would drop supply pressure to the control circuit before condemning the pump. p. 467
What format is this Case Corporation 880B & variants manual in?
This is a 678-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.
Can I print specific sections of this Case Corporation 880B & variants manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Are hydraulic system diagrams in this Case Corporation 880B & variants manual?
Yes, complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
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