Part of the Case IH Repair Manuals.
Swivel gearbox leaking, cutterbed knives worn round, a drive belt slipping: the Case IH 8309, 8312 service manual PDF, 480 pages under OEM Rac 8-95590, walks you through both rotary mower conditioners. Hydraulic coverage runs from schematic to cylinder rebuild, with troubleshooting charts that take you from a slow lift to the tongue position cylinder, lift master, or lift slave behind it. Chassis work fills the largest share of the book: wheels and tires, implement drive line, clutch drive shaft, main gearbox, header flotation, hay conditioner, jackshaft and U-joint assemblies, and full swivel gearbox teardown. Set your windrow width anywhere from 30 IN to 75 IN (762 mm to 1905 mm), and pack the chain case with 1 LB (0.45 kg) on a service, 2 LB (0.9 kg) on a repair. Print the sections you need and let the pages get greasy.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| 8309 and 8312 Rotary Mower Conditioner | 1-6 | |
| General | 7-40 | Index (Introduction, Safety Rules, General Machine Specifications, And Standard Torque Specifications, Maintenance and Lubrication, Safety Decals) |
| Hydraulic System | 41-60 | Index (Hydraulic System) |
| Chassis | 61-216 | Index (Wheels and Tires, Drive Line, Header Cutting Height and Flotation, Cutterbed, Hay Conditioner, Swivel Gearboxes) |
| 8312 Rotary Mower Conditioner General | 217-262 | General Information, Safety Precautions, Machine Specifications, Torque Specifications, Maintenance, Lubrication |
| 8312 Rotary Mower Conditioner Hydraulic System | 263-286 | Hydraulic Schematic, Troubleshooting, Tongue Position Cylinder, Lift Master Cylinder, Lift Slave Cylinder |
| 8312 Rotary Mower Conditioner Chassis - Wheels, Tires, and Drive Line | 287-368 | Wheels and Tires, Drive Line, Implement Drive Line, Clutch Drive Shaft, Main Drive Gearbox, Drive Belt Adjustment |
| 8312 Rotary Mower Conditioner Chassis - Header, Cutterbed, and Hay Conditioner | 369-452 | Header Cutting Height, Flotation, Cutterbed and Knives, Hay Conditioner, Jackshaft Assemblies, U-Joint Assemblies |
| 8312 Rotary Mower Conditioner Chassis - Swivel Gearboxes | 453-480 | Swivel Gearboxes, Removal, Installation, Disassembly, Inspection, Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Knife circle diameter | 23.62 IN (600 mm) | p. 17 |
| Windrow width (adjustable) | 30 IN to 75 IN (762 mm to 1905 mm) | p. 19 |
| Length of conditioner rolls | 75-1/4 IN (1191 mm) | p. 17 |
| Chain Case lubricant quantity (service or rebuild) | 1 LB (0.45 kg) | p. 26 |
| Chain Case lubricant quantity (repair) | 2 LB (0.9 kg) | p. 26 |
| Cutterbed drain plug torque | 22 to 25 LB-FT (29 to 34 N-m) | p. 28 |
| Cutterbed fill plug torque | 22 to 25 LB-FT (29 to 34 N-m) | p. 28 |
| Ball end play | 0.025 IN (.635 mm) | p. 77 |
| Right end header flotation spring scale reading | 75 to 100 LB (34 to 45 kg) | p. 153 |
| Left end header flotation spring scale reading | 100 to 125 LB (45 to 57 kg) | p. 153 |
| Disc speed | 2600 rpm | p. 230 |
| Hay conditioner speed | 900 rpm | p. 230 |
