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Part of the Case Repair Manuals.
Every one of the 616 pages in this Case 125B Service Manual PDF (OEM #8-74350) is aimed at one machine: your 125B excavator, from its Deutz engine to the turntable bearing. Inside: an electrical section with system specifications, circuit checks and starter, alternator and battery service, hydraulic diagrams covering the pump, swing motor, control valves, and cylinders, plus removal and installation procedures for tracks, final drives, drive motors, and the boom and arm. You also get maintenance and lubrication charts and a factory torque table for every metric fastener grade. Torque Grade 8.8 M10 bolts to 38-45 pound-feet, and fill the hydraulic reservoir to 58.1 US gallons (220 litres). No more chasing hydraulic pressure faults with borrowed numbers from a forum thread. This bookmarked PDF opens on any device; pull it up on a tablet next to the machine and start wrenching.
What's Inside This Case 125B Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 3-14 | Safety Rules, Service Manual Introduction, And Torque Specifications, Maintenance and Lubrication |
| Engine | 15-248 | Engine Removal and Installation, Engine Accessories, Deutz Engine Service Manual |
| Fuel System | 249-252 | Fuel Lines, Fuel Tank, And Engine Controls |
| Electrical | 253-306 | Electrical System Specifications and Troubleshooting, Wiring Schematics, Batteries, Starter, Alternator |
| Track and Suspension | 307-350 | Removal and Installation of Track Components, Troubleshooting, Track Chain and Shoes, Track Rollers, Carrier Rollers, Idlers, And Sprockets |
| Power Train | 351-408 | Removal and Installation of Power Train Components, Drive Motor Prior to Machine P.I.N. 74880, Drive Motor Machine P.I.N. 74880 and After |
| Hydraulic Components | 409-608 | Hydraulic Pump, Control Valve, Solenoid Control Valve, Swing Motor, Hydraulic Swivel, Cylinders |
| Mounted Equipment | 609-616 | Boom, Arm, And Tool, Turntable Bearing and Related Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Grade 8.8 Bolts, Nuts, and Studs M4 | 2-3 pound-feet | p. 7 |
| Grade 8.8 Bolts, Nuts, and Studs M5 | 5-6 pound-feet | p. 7 |
| Engine crankcase capacity without filter change | 18 U.S. quarts (17 litres) | p. 13 |
| Engine crankcase capacity with filter change | 19.1 U.S. quarts (18 litres) | p. 13 |
| Hydraulic system reservoir capacity | 58.1 U.S. gallons (220 litres) | p. 13 |
| Hydraulic system complete system capacity | 84.5 U.S. gallons (320 litres) | p. 13 |
| Valve clearance Inlet | 0.15 mm | p. 31 |
| Valve clearance Exhaust | 0.15 mm | p. 31 |
| Hydraulic Swivel Weight | 220 pounds | p. 599 |
| Track Shoe Mounting Bolt Torque | 400 pound-feet | p. 316 |
| Alternator Output | 27 ampere | p. 296 |
