All 748 pages of this Case IH DX18E, DX22E, DX24E, DX25E Repair Manual (OEM #87352320) are built around one job: getting your compact tractor back to factory spec. Inside, you get full electrical schematics covering every circuit in the DX18–DX25 series, hydraulic system diagrams with complete fluid routing for the hydrostatic transmission, lift cylinder, and remote control valves, plus a deep troubleshooting section spanning engine, HST, PTO, brakes, and steering. Open to the specs tables and you'll find injection pump timing split by serial number: 21° BTDC for the DX18E and DX24E, 25–26° for the DX18E on or above pin HDG110001, the DX22E, and DX25E. Torque the control valve spool mounting bolts to 9–13 N·m before buttoning up the hydraulic section. No more chasing an electrical gremlin across a wiring diagram that's three forums old. This PDF is bookmarked by system; tap any section on your tablet, walk to the tractor, and start wrenching.
What's Inside This Case IH DX18E, DX22E, DX24E, DX25E Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 37-68 | Precautionary Statements, Personal Safety, Machine Safety, Information, Safety, Tractor, Servicing the Tractor |
| Engine Systems | 69-194 | Specifications, Troubleshooting, Overhaul, Engine Lubrication System, Cooling System, Fuel System |
| FWD | 195-224 | Specifications, Front Wheel Drive Axle, Overhaul, Differential, Drive Pinion, FWD Box |
| Differential and Rear Axles | 225-246 | Specifications, Differential, Differential Lock, Rear Axle, Overhaul, Ring Gear and Pinion Gear Pattern Specification and Adjustment |
| Hydrostatic Transmission | 247-328 | Specifications, Description of Operation, Troubleshooting, Overhaul, HST Adjustment, Electric Cruise Control (Optional) |
| PTO | 329-366 | Specifications, Description of Operation, Power Flow, Troubleshooting, Overhaul, PTO Clutch |
| Brakes | 367-382 | Specifications, Description of Operation, Parking Brake, Troubleshooting, Overhaul |
| Hydraulic System | 383-454 | Specifications, Description and Operation -- Hydraulic System Circuits, Troubleshooting, Overhaul -- Lift Cylinder, Hydraulic Pump and Filter, Remote Control Valves |
| Power Steering | 455-494 | Description of Operation, Power Steering Control Valve, Hydraulic Pump, Power Steering Cylinder, Troubleshooting, Pressure Testing |
| Wheels | 495-500 | Wheel Tread Settings, Tractor Weighting, Cast Iron Weights, Liquid Ballast, Tire Pressure |
| Electrical System | 501-686 | Electrical Component Location and Function, Battery, Main Fuse, Fuse Block, Key Switch, Safety Switches |
| Mwx154S -- Mwx160S Mid Mount Mower | 687-730 | Specifications, Mower Deck -- Overhaul, 90° Gearbox, Blade Spindles and Pulley Holders, Lubrication, Mower Lift Linkage, Cutting Height |
| Platform | 731-748 | Hood, Main Cowling, Dash Panel, Steering Column, Seat, Fuel Tank |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Injection Pump Type | In-Line | p. 162 |
| Injection Pump Timing (Before TDC) | 21° | p. 62 |
| Control Valve Spool Mounting Bolts Torque | 9--13 N⋅m (6.6--9.6 lb.-ft.) | p. 413 |
| Control Valve to Lift Cover Mounting Bolts Torque | 27--35 N⋅m (19.9--25.8 lb.-ft.) | p. 413 |
| Remote Control Valve Wiper Rings and O-rings Replacement | Replace the valve with a new assembly | p. 422 |
| Front Remote Valve O-rings and Seals Replacement | Replace all O-rings and seals during assembly | p. 442 |
| Fuel Filter Service Interval | Every 50 Hours | p. 59 |
| Fuel Filter Element Service Interval | Every 200 Hours | p. 59 |
| Fan Diameter | 330 mm (13.0″) | p. 62 |
| Number of Fan Blades | 7 | p. 62 |
| Hydraulic System Troubleshooting - Implement fails to rise (Relief valve setting) | Relief valve setting too low | p. 397 |
| Hydraulic System Troubleshooting - Implement fails to rise (O-ring failure) | O-ring failure on piston or on control valve connection to HPL cover | p. 397 |
Case IH DX18E, DX22E, DX24E, DX25E Common Problems This Manual Covers
Case IH DX-series tractor engine cranks but won't start, no fuel reaching injectors p. 162
Check the fuel filter before anything else; the maintenance schedule on page 59 requires service every 50 hours. Drain the sediment bowl, replace the filter element, and bleed air from the fuel system. If the engine still won't fire, test injection pressure against the 118 bar (1704 psi) spec on page 162 before condemning the injection pump.
Manual Section: Fuel System TroubleshootingHydraulic lift arm won't raise implement or cycles erratically under working load p. 397
Inspect the system relief valve setting first; it must hold 130 bar (1849 psi) per page 63. Check O-ring condition on the piston and at the control valve connection to the HPL cover (page 397). If pressure tests good but lift is still slow, remove and inspect the hydraulic pump for internal wear.
Manual Section: Hydraulic System TroubleshootingEngine temperature gauge climbs into red zone after one hour of field work
Check coolant level and test the radiator cap; it must hold 0.9 bar (13.1 psi) before suspecting the thermostat. Clean clogged radiator fins, inspect the V-belt for cracks or slack, and verify the water pump turns freely. If coolant is full and cap holds pressure, work through the overheating sequence to isolate the failing component.
Manual Section: Engine Systems TroubleshootingTractor loses drive power gradually during heavy use, barely moves on hills p. 249
Check HST fluid level and condition first; degraded oil accelerates pump and motor wear. Test the high-pressure relief valve against the 172 bar (2495 psi) spec on page 249; a valve stuck open bleeds pressure before the wheels feel load. If pressure tests low, the HST has internal leakage; review the hydraulic schematic before starting disassembly.
Manual Section: Hydrostatic Transmission TroubleshootingPTO shaft won't engage or spins at incorrect speed with implement connected p. 331
Verify engine speed first: PTO output is 540 rpm only at 2292 engine rpm (page 331). Engaging the PTO at low idle causes clutch slip and glazed friction surfaces. Check the lever for full engagement travel, then inspect friction discs for glazing or wear. If the shaft creeps when the lever is disengaged, the clutch pack needs a rebuild.
Manual Section: PTO TroubleshootingFrequently Asked Questions
What are the torque specs for the main bolts on Case IH DX22E?
For the Case IH DX22E, the main bearing holder retaining bolts should be torqued to 25 -- 29 N⋅m (18 -- 22 ft. lbs.). This specification is found in the engine systems section of the manual.
Torque specification for engine head bolts on Case IH DX18E
The engine head bolts for the Case IH DX18E should be torqued to 49 -- 52 N⋅m (36 -- 38 ft. lbs.). This information is provided in the torque specifications for engine systems.
What are the replacement specifications for Fuel injection pump?
The replacement specification for the fuel injection pump is identified by Manufacturer Assembly Number 094500-7410. If the pump is found to be faulty, it should be repaired by an authorized Zexel Diesel Service Station or replaced as an assembly during the warranty period.
What are the replacement specifications for Main control valve spool?
The manual indicates that if the main control valve spool shows defects such as scratches, pitting, or excessive wear, the entire control valve assembly should be replaced. No specific replacement specifications are provided for the spool as an individual component.
What format is this manual in?
You get a 748-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Can I find wiring schematics in this Case IH DX18–DX25 Series manual?
Yes, full electrical schematics are included with wire colors, connector locations, and circuit descriptions.
Reviews
There are no reviews yet.