Part of the Case Repair Manuals.
An hour from now you could be tracing a dead circuit instead of staring at it: this 394 page PDF is one volume of the Case Magnum 215-335 factory service set (84170101), the electrical schematics and lighting book A.30.A to A.40.A, OEM 84176636, covering five Magnum series tractors from the 215 through the 335 from P.I.N. Z7RZ05000 and after. Check your tractor's P.I.N. plate before you buy: the schematic frames are printed twice, once for Z7Rx05001 through Z8Rx06000 and again for Z8Rx06001 and later, so both serial breaks are covered in this one file. Connector diagrams take up most of the book, mapping each plug pin by pin, with fuse and relay box identification split by the same serial number break. Electrical schematic frames trace every circuit from fuse to splice, and diagnostic routines walk you through relay testing, alternator testing, and lighting system faults. Check charging output against the 14.2 V regulation spec before condemning a battery, then torque the regulator screws to 0.7 to 1.0 Nm on reassembly. Guessing buys the wrong part and a second teardown.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Connectors - Component Diagrams | 5-14 | Connector Identification, Component Diagrams, Connector Frame Locations, Reference Designators |
| Wiring Harness - Schematic Frames 01-52, PIN Z7Rx05001-Z8Rx06000 | 15-113 | Electrical Schematic Frames, Circuit Descriptions, Pneumatic Brake, Back Up Alarm Harness, Splices |
| Wiring Harness - Schematic Frames 53-90, PIN Z7Rx05001-Z8Rx06000 | 114-213 | Electrical Schematic Frames, Seat Harness, Terra Lock, Load Pressure Sensor, Splice Tables |
| Wiring Harness - Schematic Frames, PIN Z8Rx06001 and After | 214-347 | Charging and Starting System, Suspended Axle, Outside Autoguidance, Strobe Lamp Circuits, Splice Tables |
| Alternator and Battery - Service | 348-354 | Alternator Replace, Regulator Replace, Battery Disconnect, Battery Connect |
| Fuse and Relay Box - Problem Solving | 355-361 | Power Distribution, Relay Testing, Cab Power Relays, Tractor ECU Relay, Armrest Controller Relay |
| Alternator - Problem Solving | 362-366 | Charging System Output, Regulation Voltage, Alternator Testing |
| Connectors - Component Diagrams (Continued) | 367-374 | Connector Identification, Component Diagrams, Serial Number Breaks |
| Lighting System | 375-394 | High Beam Circuits, Rear Work Light Switch Testing, Dome Light Testing, Problem Cause Correction Tables, Test Point Tables |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Charging system output at 1000 RPM, transmission in Park | 12.8 - 14.5 V | p. 363 |
| Alternator voltage regulation | 14.2 V | p. 362 |
| Cab power relay supply, terminal 240M to chassis ground, key off | 12 V | p. 356 |
| Alternator regulator screw torque (3 mm) | 0.7 - 1.0 Nm | p. 351 |
| Alternator regulator screw torque (5 mm) | 4.0 - 5.0 Nm | p. 351 |
| Alternator cover nut torque | 4.0 - 5.0 Nm | p. 352 |
