All 1,462 pages of this Case IH Patriot 4420 Service Manual (OEM #84190697) are dedicated to one machine: the Patriot 4420 self-propelled sprayer, from engine block to boom tips. Inside, you get complete electrical schematics split by serial number, covering cab, frame, and application circuits for both Y9T024764-and-higher and Y9T024763-and-lower builds, plus the full hydraulic schematic. Open to a thorough troubleshooting section, error code tables, torque specs for U.S. hardware, metric hardware, and steel hydraulic fittings, and step-by-step procedures for the Aim Command system, liquid plumbing, hydrostatic pumps, and steering cylinder. Fill the engine to 21.8 L after a filter change, load a 950 CCA battery, and confirm spray pressure holds 344.74 kPa (50 PSI) before your pump flags a fault. Your machine is down at the worst possible time. Bookmarked by system, searchable by keyword: grab your tablet, walk to the cab, and start diagnosing.
What's Inside This Case IH PATRIOT 4420 Manual
| System | Pages | Key Topics |
|---|---|---|
| General, Engine, Electrical | 23-373 | Standard Torque Specifications, Engine Removal and Installation, Air Induction System, Fuel System, Electrical System, Battery Servicing and Testing |
| Steering and Hydraulics | 374-732 | Steering Pump, Hydraulic System Troubleshooting, Hydrostatic Pumps, Wheel Motor, Parking Brake System, Steering Cylinder |
| Air Conditioning, Chassis | 733-1092 | Air Conditioning System Service, A/C Compressor, Thermal Expansion Valve, Radiator, Coolers and Condenser, Wheels, Hubs and Suspension, Brakes |
| Booms, Controls, Spray System | 1093-1324 | Booms, Aim Command, Liquid Plumbing System, Product Tank and Rinse Tank, Product Pump, Spray Bar |
| Cab, Engine, & Frame Electrical Schematic for Serial Number Y9T024764 and Higher | 1325-1364 | Cab, Engine, Frame, Electrical Schematic, Patriot 4420, Fuses, Relays, Batteries |
| Cab, Engine, & Frame Electrical Schematic for Serial Number Y9T024763 and Lower | 1365-1405 | Batteries, Starter / Alternator, Supply Circuits FP1, Supply Circuits FP2, Ignition / Brake, Park Brake / Backup Alarm, ICU2 Display, Fuel / Air Rstr / Cab PSI |
| 84202156 - Hydraulics Schematic | 1406-1407 | Liquid Spray, Active Suspension, Ladder Fold, Auto Steer Option |
| Application Electrical Schematic for Serial Numbers Y9T024764 and Higher | 1408-1437 | Fuse/relay Location, Interface Cab/application, Hydrostat Handle, RH Boom Functions, LH Boom Functions, Auto Center Pwr / Neutral, Boom/park Brake/axle Cntrl, Foam Marker |
| Application Electrical Schematic for Serial Numbers Y9T024763 and Lower | 1438-1462 | Fuse Table, Table of Relays, Component Location Chart, Fuse/relay Location, Interface Cab/application, Hydrostat Handle, RH Boom Functions, LH Boom Functions |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Pressure not reaching target | 344.74 kPa (50 PSI) | p. 1205 |
| Pressure fluctuation threshold for tuning | more than 34.45 kPa (5 PSI) above and below the pressure set point | p. 1202 |
| Engine Oil Capacity - With Filter Change | 21.8 L (23 qt.) | p. 82 |
| Fuel Tank Capacity | 530 L (140 Gal.) | p. 82 |
| Battery Rating | 950 CCA at -17oC (0oF) | p. 82 |
| Hydrostatic Pump Charge Pressure | 24.8 to 26.2 bar (360 to 380 PSIG) | p. 83 |
| Product Pump Circuit Relief Valve Setting | 172.4 bar (2500 PSI) | p. 83 |
| Maximum Operating Weight | 16.7 kg (36,900 lbs.) | p. 85 |
| Wheel Lug Nuts Torque | 608 to 675 Nm (450 to 500 ft.-lb.) | p. 1014 |
| Compressor Belt Tension (New Belt) | 422 to 516 N (95 to 115 lb.) | p. 79 |
| Steering Wheel Nut Torque | 45 to 54 Nm (33 to 40 ft.-lb.) | p. 392 |
| Engine Motor Mount Bolts Torque | 485 to 515 Nm (360 to 380 ft.-lb.) | p. 102 |
Frequently Asked Questions
What nozzles are recommended for non-original pours on Case IH Patriot sprayers?
The manual provides a "NOZZLE TIP SELECTION CHARTS" on page 10030-20, which categorizes nozzles by "Mode of Action" (e.g., Fungicide, Insecticide, Herbicide, Fertilizer) and "Class" (e.g., F, M, C, VC, XC). It states that the customer is responsible for following the chemical label, tip manufacturer, and governmental requirements for specific applications.
How to reset Case IH Patriot 4420 sprayer after error code
To clear (erase) error codes on the Case IH Patriot 4420 sprayer, press and hold the increase INCR and decrease DECR keys simultaneously for five seconds. After clearing, press the PROG key and use the INCR or DECR key to scroll to EXIT, then press PROG again to return to the hour meter display.
Torque specs for knee bushings on Case IH Patriot 4420
When installing urethane bushings in the upper suspension arm, tighten to compress the rubber and urethane to achieve a dimension of 17 mm (.66 in.) from the top of the cylinder rod to the top of the jam nut. The Lower Suspension Cylinder Nut and Bolt should be torqued to 292 to 332 Nm (215 to 245 ft.-lb.), and the Upper Suspension Arm Lower Bolt to 556 to 597 Nm (410 to 440 ft.-lb.).
Is this Service Manual a digital download?
Immediate download of the complete 1462-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Are there any print restrictions on this manual?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find hydraulic circuit diagrams in this Case IH Patriot 4420 manual?
Included. Hydraulic system schematics cover all circuits, control valves, and component specifications for the Case IH Patriot 4420.
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