Part of the Case IH Repair Manuals.
All 162 pages of this Case IH MDX Disc Mower Repair Manual (OEM #87023825) zero in on three models: MDX71, MDX81, and MDX91, giving you factory service from the PTO shaft and overrunning clutch through the bevel gearbox and cutter bar. Inside: a full torque section covering hardware, hydraulic tube fittings, and pipe threads; page after page of exploded views for every major assembly; and step-by-step procedures for PTO disassembly, jackshaft belt replacement, hydraulic cylinder service, breakaway link inspection, and complete cutter bar rebuilds. Your troubleshooting section and lubrication schedule round it out. Torque the knife bolts to 117 ft lbs (159 N·m) and seat the bevel gearbox output shaft seal at 13/16 inches (21 mm) depth. No more hunting forum threads for specs that may not match your machine. Bookmarked by section; open it on your tablet and jump straight to the procedure you need.
What's Inside This Case IH MDX71, MDX81, MDX91, MDX91 Disc Mowers Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 9-62 | Precautionary Statements, Safety, Ecology and the Environment, International Symbols, Hardware Torque Values, Installation of Adjustable Fittings in Straight Thread O Ring Bosses |
| Implement Power Take-Off | 63-82 | PTO (Implement Power Take-Off, Twist Lock - Disassembly, Twist Lock - Assembly, Overrunning Clutch - Disassembly, Overrunning Clutch - Assembly, Shielding - Disassembly, Shielding - Assembly, U-Joints - Disassembly, U-Joints - Inspection, U-Joints - Assembly, Shaft Tube Replacement) |
| Hydraulic System | 83-88 | Cylinders (Disassembly, Inspection, Assembly) |
| Frames | 89-94 | Breakaway Link (Disassembly, Inspection, Assembly) |
| Attachments and Headers | 95-146 | Bevel Gearbox (Removal, Disassembly, Reassembly, Installation) |
| Accessories | 147-152 | Left Swathboard Kit, High Stubble Kit, Knives, Degree Twist Knives, V Knives |
| Safety Decals | 153-162 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic system reset procedure | Place the tractor hydraulic valve in the “float” position to allow the cutter to follow the contour of the ground. | p. 44 |
| Knife replacement condition | Replace cracked or severely deformed knives immediately; replace if bent, severely worn, or if the hole is elongated. | p. 115 |
| Knife bolt torque | 117 ft lbs (159 N⋅m) | p. 106 |
| Bevel gearbox output shaft seal installation depth | 13/16″ (21 mm) | p. 104 |
| Disc module shaft seal installation | Must be pressed into place flush with the side of the housing, and square to the shaft. | p. 133 |
| Rock guard replacement condition | Replace broken rock guards immediately; replace if worn thin before they break. | p. 118 |
| Skid shoe thickness | 1/4″ | p. 113 |
| Skid shoe width | 8″ | p. 113 |
| Disc retaining bolt torque | 83 ft lbs (113 N⋅m) | p. 114 |
| MDX71 | ||
| MDX71 Cutting Width | 2040 mm | p. 62 |
| MDX81 | ||
| MDX81 Cutting Width | 2400 mm | p. 62 |
| MDX91 | ||
| MDX91 Cutting Width | 2800 mm | p. 62 |
