Case 580B Construction King Backhoe Loader Service Manual (Part No. 8-90721)

• Factory-standard 600-page technical reference for the 1970s Case 580B Construction King series, covering the complete build spectrum.
• Details both Diesel and Spark Ignition configurations alongside Hydrostatic and Shuttle drivetrain architectures.
• Features 47 exploded-view diagrams mapping out cylinder heads, rocker arms, fuel delivery setups, and timing gear assemblies.
• Defines exacting adjustment parameters for the 148, 159, 188, and 201 cubic-inch engine line.
• Official OEM publication (Form 9-80721) detailing comprehensive tractor specifications.
• Covers the loader, backhoe, three-point hitch, fork lift, and boom lockout systems.
• Explains Twin Disc power shuttles, Rockford clutches, Marvel-Schebler carburetors, Hydra-Guide hydraulics, independent PTOs, and differential brakes.

System Architecture and Component Data

Turning wrenches on a 580B requires accurate baseline data. This PDF manual breaks down the operational framework for both engine configurations, providing a direct diagnostic advantage for daily workshop routines to minimize downtime. You get the hard numbers on camshaft profiles, valve spring pressure thresholds, and valve guide dimensions tailored to specific engine displacements. For fuel delivery, the documentation zeroes in on Roosa-Master injection pump calibration and Zenith updraft carburetor baselines, including idle mixture and float adjustments. The hydraulic chapters map out the power steering circuits, control valves, and lift cylinders to streamline diagnostic troubleshooting and repair work in the shop. Power train sections break down clutch pack specs and hydrostatic drive components. To speed up any fault isolation, the book includes electrical wiring diagrams, functional hydraulic diagrams, detailed troubleshooting charts, and routine lubrication charts. Note that working on pressurized hydraulic circuits and heavy driveline components carries inherent risks, so always verify system pressure relief procedures and use proper staging equipment before beginning heavy tear-downs.

Engine, Drivetrain Repairs, and Torque Specifications

Precision matters during a rebuild. The specification tables define absolute wear limits for cylinder sleeves, piston ring end gaps, and crankshaft bearing clearances specifically for the 188D and 188G blocks. Torque values are non-negotiable. You will find comprehensive charts detailing foot-pound requirements for main bearing caps, connecting rods, and flywheel mounting bolts, supplemented by precise valve seat grinding views. Intake valve clearance is firmly documented at 0.014 inches. Instead of outsourcing to expensive specialized dealers, technicians can follow the step-by-step instructions for safely splitting the tractor, overhauling the shuttle clutch packs, and rebuilding the hydrostatic transmission gear train.

When servicing these specific engines, mechanics need to be aware of hidden rebuild traps. For instance, failing to precisely measure the cylinder sleeve protrusion on the 188 blocks to select the exact standard or oversized fire ring will frequently lead to premature head gasket failure. Additionally, overlooking the strict 1-degree interference angle requirement during valve and seat refacing can prevent proper seating and cause rapid carbon buildup. The manual also outlines critical fluid parameters, such as the 2.5-quart hydraulic reservoir capacity. For diesel setups, it specifies a baseline fuel injection pump pressure of 2750 to 2850 PSI for new injectors.