Part of the Case IH Operator Manuals.
All 190 pages of this Case 400 Series Operator Manual are the factory reference for operating and maintaining your tractors. Inside: a full controls and instrument guide and a complete lubrication section mapping every grease point across engine, transmission, rear axle, and PTO. You also get a tiered maintenance schedule stepping through 60-, 120-, 240-, 500-, and 1000-hour intervals, plus a Service Suggestions chapter tackling the most common field problems: engine won’t start, overheating, and low oil pressure. Set rear tire pressure to 14 pounds on 13-inch tires and 16 pounds on 14- through 18-inch sizes; the cooling system relief cap holds at 4 lbs. Your machine won’t tell you what’s wrong. This manual will.
What's Inside This Case IH 400–403 series Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Serial Numbers | 9-10 | Number Plate, Instrument Panel, Engine Block, Air Cleaner |
| General Specifications | 11-28 | Engine, Fuel System, Cooling System, Electrical System, Transmission, Hydraulic Control System |
| Diesel Engine Fuel | 29-40 | Fuel Specifications for a Suitable Number 2 Diesel Fuel, Fuel Recommendations for Cold Weather Operation, Fuel Handling and Storage |
| Lubrication | 41-64 | Recommended Lubricants and Approximate Capacities, Lubricating Point Locations, Engine Lubrication, Transmission Lubrication, Rear Axle Drive Housing, Hydraulic Control System |
| Operating Instructions | 65-123 | Run-In Procedure, Operating Controls and Instrument Guide, Diesel Engine Starting Procedure, Stopping Engine, Cold Weather Operation, Ether Starting Aid, Gear Selection |
| Important Checks During Operation | 124-126 | Check Every Day, Check Every 60 Hours, Check Every 120 Hours, Check Every 240 Hours, Check Every 500 Hours, Check Every 1000 Hours or Once a Season |
| Service Suggestions | 127-138 | Engine Will Not Start, Engine Misfiring on One or More Cylinders, Engine Does Not Smoke But Lacks Power, Engine Stalls, Engine Overheating, Low Oil Pressure |
| Preventive Maintenance | 139-186 | Fuel System, Bleeding Fuel System, Checking Condition of Fuel Filters, Servicing Fuel Filters, Air Cleaner, Crankcase Breathers, Cooling System, Power Steering Drive Belt |
| Warranty | 189-192 | Hardened Moldboards, Shares, Landsides, Cultivator Shovels, Plow Disks, Harrow Disks, Spring Tooth Harrow Teeth, Diesel Engine Exhaust |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cooling system cleaning frequency | once a year | p. 161 |
| Pressure cap control valve setting | 4 lbs | p. 160 |
| Rear Tire Pressure (13 Inch) | 14 pounds | p. 81 |
| Rear Tire Pressure (14, 15, 18 Inch) | 16 Pounds | p. 81 |
Case IH 400–403 series Common Problems This Manual Covers
Case IH 400 Series Tractor coolant temperature gauge rising rapidly and engine overheating
Inspect the cooling system for leaks and check the pressure cap. Verify the control valve functions as a safety relief valve and maintains exactly 4 lbs of pressure as specified on page 160. Replace the cap if it fails to hold this specification.
Manual Section: Engine Overheating p. 160Coolant leakage from hoses or heavy dirt accumulation blocking the radiator fins
Drain the radiator and flush the block completely. Clean the entire cooling system at least once a year to prevent dirt buildup as instructed on page 161. Inspect all hoses, elbows, and the water manifold for degradation before refilling with fresh coolant.
Manual Section: Preventive Maintenance p. 161Poor traction in soft soil and uneven tread wear across the rear drive tires
Measure the air pressure in the rear wheels using an accurate gauge. Inflate 13-inch rear tires to a minimum pressure of 14 pounds, or use 16 Pounds for 14, 15, and 18-inch tires. Refer to page 81 for exact inflation procedures.
Manual Section: Operating Instructions p. 81Frequently Asked Questions
What are the replacement specifications for Radiator cleaner and refill water for cooling system maintenance?
For cooling system maintenance, the manual specifies to clean the cooling system at least once a year. This involves draining the old coolant, adding a nationally known commercial brand radiator cleaner to the system, and then refilling with clean water after flushing the cleaning solutions. The process should be followed according to the cleaner's directions. p. 161
What format is this Case 400 manual in?
You get a 190-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Is this Case 400 Operator Manual printable?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Does this Case 400 manual include wiring diagrams?
No. This is an operator and maintenance manual covering controls, lubrication, and scheduled service intervals. Electrical diagrams are not included; consult a separate service manual for those.
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