All 336 pages of this Case IH Farmall® 90C, 100C, 110C, 120C Operator Manual (OEM #47945456) focus on one thing: running your tractor right and keeping it in service. Inside: a thorough safety section covering PTO hazards, tire rules, and battery precautions, plus a complete controls walkthrough of every cab instrument, SCR system indicator, and electrohydraulic PTO lever your machine has. You get detailed operating procedures for front loader installation, DEF/AdBlue® tank filling, and four-wheel drive engagement, backed by a full maintenance chart with fluid check intervals and service milestones. Top off your cab-equipped Farmall with 16.0 L (4.2 US gal) of coolant and tighten loader boom M6 hardware (8.8 class) to 12 N·m (9 lb ft). No more chasing dashboard warning lights without a factory reference. Bookmarked by section, searchable by keyword: pull it up on any device and get your answer before the next shift starts.
What's Inside This Case IH Farmall® 90C, Farmall® 100C, Farmall® 110C, Farmall® 120C Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 11-30 | Note to the Owner, Intended Use, Proposition 65, Electro-Magnetic Compatibility, Manual Scope and Required Training Level, Metric and Imperial Units Abbreviations |
| Safety Information | 31-62 | Safety Rules and Signal Word Definitions, Safety Rules - General Information, Safety Rules – Maintenance, Safety Rules - Wheels and Tires, Safety Rules – Explosions and Fires |
| Controls and Instruments | 63-122 | Access to Operator's Platform (Getting: in and Out of the Machine, To Know the Internal Parts of the Cab) |
| Operating Instructions | 123-136 | Basic Operating Safety Rules, Refueling, Filling the Diesel Exhaust Fluid (DEF)/AdBlue® Tank, Engine Operation, Machine Movement Start-Up, Installation of the Front Loader |
| Transport Operations | 137-140 | Transporting the Machine, Road Transport of the Tractor with Loader Installed, Towing the Tractor |
| Working Operations | 141-206 | Transmission Operation, Four-Wheel Drive with Electro-Hydraulic Control, Electrohydraulic Differential Lock, Power Take-Off (PTO) Specifications |
| Maintenance | 207-280 | Maintenance Chart, Engine - Check - Oil Level, Fuel Filters - Replace, Diesel Exhaust Fluid (DEF)/AdBlue® Tank - Cleaning - Filler Neck Filter, Battery - Check, Fuses and Relays |
| Troubleshooting | 281-290 | Engine - Troubleshooting, Electrical System - Troubleshooting, Hydraulic Systems - Troubleshooting, Alarms, Viewing Error Codes, Error Code Identification |
| Specifications | 291-318 | Dimensions and Weights, Maximum Permitted Loads on Front and Rear Axle, Speed Table for 8 X 8 Gearbox, Consumables, Capacities, Technical Data |
| Accessories | 319-330 | Radio, Single Piece Ballast, Coolant Immersion Heater |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Loader boom standard hardware M6 (8.8 class) | 12 N·m (9 lb ft) | p. 241 |
| Loader boom standard hardware M6 (10.9 class) | 17 N·m (13 lb ft) | p. 241 |
| System Cooling (Models with cab) | 16.0 L (4.2 US gal) | p. 218 |
| System Cooling (Model without cab) | 14 L (3.7 US gal) | p. 218 |
| Radiator - Check – Fluid level | As required | p. 220 |
| Windshield washer fluid reservoir - Filling | As required | p. 220 |
| DEF/AdBlue® shelf life (storage <= 10 °C) | 36 months | p. 29 |
| Towing speed limit | 8 km/h (5 mph) | p. 42 |
| Engine recommended operating RPM | 2300 RPM | p. 75 |
| Engine oil temperature for max speed (above) | 0.0 °C (32.0 °F) | p. 130 |
| PTO output shaft diameter (540 RPM) | 34.75 mm (1.37 in) | p. 314 |
| Three-point linkage dimension A | 28 mm (1.1 in) | p. 175 |
Case IH Farmall® 90C, Farmall® 100C, Farmall® 110C, Farmall® 120C Common Problems This Manual Covers
Case IH Farmall 90C 100C 110C 120C DEF/AdBlue warning light on dashboard, tractor losing power p. 290
Check the DEF/AdBlue tank level first: capacity is 9.6 L (2.5 US gal), shown on page 218. Fill with fresh fluid stored below 10 °C (50 °F); shelf life at that temperature is 36 months. If the tank is full, clean the filler neck filter per the maintenance chart on page 220. Review fault code identification on page 290 to read the specific SCR system code before clearing it.
Manual Section: TroubleshootingEngine cranks but won't start or starts hard in cold morning conditions p. 281
Verify engine oil temperature is above 0.0 °C (32.0 °F) before attempting full-speed operation, per page 130. Check that the fuel tank (125.0 L / 33.0 US gal capacity) has clean diesel: drain water from fuel filters at the warning message display as noted on page 220. If the problem persists, review the engine no-start checklist on page 281.
Manual Section: Engine - TroubleshootingRear three-point hitch raises implement very slowly or stops partway up p. 285
Check hydraulic fluid level for your transmission type: 48 L (12.7 US gal) for mechanical, 54.0 L (14.3 US gal) for Power Shuttle, or 57.0 L (15.1 US gal) for Hi-Lo (page 218). Verify lift oil filters are not overdue: replacement interval is every 300 hours (page 221). Then consult the rear three-point hitch troubleshooting chart on page 285 for fault code signal and slow-lift conditions.
Manual Section: Rear three-point hitch - TroubleshootingBrake pedals feel soft or spongy, tractor takes longer than normal to stop p. 286
Check the brake fluid reservoir level: capacity is 0.7 L (0.18 US gal), listed on page 218. Refill at the warning message display as specified in the maintenance chart on page 220. Walk through the hydraulic service brakes troubleshooting procedure on page 286, which covers soft pedal and fully-depressing pedal conditions. Confirm both pedals are locked together for road travel.
Manual Section: Hydraulic service brakes - TroubleshootingCab air conditioning running but not cooling, warm air blowing from vents p. 287
Inspect the air-conditioning condenser: clean it every 100 hours per the maintenance schedule on page 220. Verify refrigerant charge is correct: system holds 650 g (23 oz) and compressor oil is 0.185 L (0.05 US gal), shown on page 218. Also clean cab air filters every 100 hours and replace them every 1200 hours or annually (page 221). If still not cooling, use the cab climate control troubleshooting guide on page 287.
Manual Section: Cab climate control - TroubleshootingFront loader rises slowly, vibrates during operation, or hydraulic pump sounds noisy p. 288
Grease all loader boom pivot points daily, every 10 hours, per the maintenance chart on page 220. Check loader hardware torque every 100 hours (page 220): M10 standard bolts (8.8 class) take 46 N·m (34 lb ft), M12 standard bolts (8.8 class) take 80 N·m (59 lb ft), per the torque table on page 241. For slow-rise or noisy pump conditions, follow the front loader and bucket troubleshooting steps on page 288.
Manual Section: Front loader and bucket - TroubleshootingFrequently Asked Questions
How to reset DEF error on Case IH Farmall 90C?
To reset the Selective Catalytic Reduction (SCR) system for DEF/AdBlue® storage tank fluid level faults, ensure the tank level is above 12% of total volume, then cycle the key switch to the OFF position or return the throttle to low idle. For quality or technical faults, the component causing the fault must be repaired or replaced, and switching off the engine will reset the system, allowing it to restart at full power. If the same failure is re-detected within 40 hours, contact your authorized CASE IH dealer for service.
How to clean diesel injectors on Farmall 90C without DPF?
The manual indicates that if fuel injection nozzles are clogged, the correction is to "Have your dealer service the injectors." This suggests that cleaning diesel injectors is not a user-serviceable task and requires professional attention.
How do you fix case IH Farmall 90C 100C 110C 120C DEF/AdBlue warning light on dashboard, tractor losing power?
Check the DEF/AdBlue tank level first: capacity is 9.6 L (2.5 US gal), shown on page 218. Fill with fresh fluid stored below 10 °C (50 °F); shelf life at that temperature is 36 months. If the tank is full, clean the filler neck filter per the maintenance chart on page 220. Review fault code identification on page 290 to read the specific SCR system code before clearing it.
How do you fix engine cranks but won't start or starts hard in cold morning conditions?
Verify engine oil temperature is above 0.0 °C (32.0 °F) before attempting full-speed operation, per page 130. Check that the fuel tank (125.0 L / 33.0 US gal capacity) has clean diesel: drain water from fuel filters at the warning message display as noted on page 220. If the problem persists, review the engine no-start checklist on page 281.
What do I get after purchasing this Case IH Farmall® 90C, 100C, 110C, 120C?
This is a 336-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Case IH Farmall® 90C, 100C, 110C, 120C 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.
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