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Part of the Case Repair Manuals.
Need the exact factory diagnostic steps for your Case excavator? This 746-page Case WX145, WX165, WX185 Service Manual PDF (OEM #9-91221) breaks down every hydraulic control block, CAN bus module, and undercarriage rebuild procedure. You get complete electrical circuit diagrams covering sensor power supplies, full hydraulic schematics detailing pilot-control systems, and step-by-step troubleshooting charts mapped directly to central unit fault codes. Open up to page after page of detailed pinouts, system diagrams, and exploded views for fast tear-downs. Verify the B10.1 speed sensor coil resistance reads exactly 450 Ω ± 20 Ω, and tighten the B13.1 temperature sensor to a precise 20 to 30 Nm before testing the machine. Stop wasting hours chasing electrical faults without a wiring map. Grab this instantly downloadable, bookmarked file, pull it up on your shop tablet, and get your equipment back in the dirt.
What's Inside This Case WX145, WX165, WX185 Manual
| System | Pages | Key Topics |
|---|---|---|
| Summary | 3-4 | - |
| Safety Instructions | 5-63 | Personal Safety Instructions, Safety Instructions Before Starting Work, Safety Instructions for Machine Operation, maintenance/servicing |
| Technical Data and Special Tools | 64-112 | Service Data General, Data Sheet for Cylinders, Conversions Tables, Tightening Torques, Calculation Examples, Special Tools |
| Machine Structure | 113-174 | Machine Layout, Undercarriage, Superstructure, Electrical System, Working Equipment, Control Elements |
| Electrical System | 175-310 | Fuses, Electrical Circuit Diagrams, Power Supply, Sensor Power Supply, Switches, Electrical Components by Code Numbers |
| Electronics | 311-361 | Electronic Control Unit, CAN Bus, Power Supply, Pcs, Power Control System, Joysticks and Pedals, Esx Coding |
| Hydraulics | 362-564 | Hydraulic System Overview, Control Block, Pilot-Control System, Travel Circuit, Braking, Steering and Fan Circuit, Cylinder Circuits |
| Troubleshooting and Repair | 565-587 | Fault Codes, General Information on Fault Codes, Fault Codes Pcs Unit, Central Unit |
| Repair Instructions | 588-746 | Depressurizing the Hydraulic System / Brake System, Bearings and Bushings, Superstructure Components, Undercarriage Components, Boom Cylinder, Fuses |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| WX145 | ||
| Max. bucket force | 91.4 kN | p. 73 |
| WX165 | ||
| Max. bucket force | 116.9 kN | p. 73 |
| WX185 | ||
| Max. bucket force | 125.4 kN | p. 73 |
| All Models | ||
| Speed sensor B10.1 - Coil resistance | 450 Ω ± 20 Ω | p. 353 |
| Temperature sensor B13.1 - Tightening torque | 20 to 30 Nm | p. 354 |
| Proportional valve Y10 - Max. coil current | 850 mA | p. 357 |
| Wheel nut tightening torque | 450 Nm | p. 678 |
Case WX145, WX165, WX185 Common Problems This Manual Covers
Case WX165 hydraulic system overheating during heavy digging cycles after 2 hours of continuous use
Check the cooler fins for mud and debris packing first, then verify fluid level and condition. Check relevant fault codes on the central unit reference starting page 585, such as ERR_LOW_COOLANT_LEVEL (7009a) on page 585 or ERR_TEMP_ENGINE_OVER (8007) and ERR_TEMP_OIL_OVER (8009) on page 584, for cooling blockage or thermostat failure. Replace the hydraulic cooler filters if flow is restricted and inspect pump seals for pressure loss under load.
Manual Section: Central Unit Fault Codes p. 585Wheel articulation failure preventing full rotation under load
Depressurize the working hydraulics per the procedure before opening any lines. Inspect the rotation bearing race for wear and check the swing motor for seizure caused by contaminated oil. Cross-reference relevant fault codes in the fault code section starting page 572 for swing motor seal failure indications.
Manual Section: Hydraulic System DepressurizationEngine bogs down under load with no hydraulic response from the boom or bucket
Check relevant fault codes in the ESX controller fault codes starting page 572, such as ERR_ENGINE_OIL_PRESSURE (7000) on page 585, which flags low hydraulic pressure from a sensor fault or pump failure. Test the pressure sensor circuit, verify the priority valve is not stuck, and inspect fuel injector nozzles for malfunction restricting engine response.
Manual Section: ESX Controller Fault Codes p. 572Swing motor fails to rotate or hesitates when rotating under load
Pull relevant fault codes first to confirm hydraulic contamination or motor seal failure. Drain a sample of hydraulic fluid to check for contamination, then inspect the swing motor seals for wear. Depressurize the system per before removing motor lines, and replace seals if scoring or leakage is present.
Manual Section: Central Unit Fault Codes p. 585Hydraulic cooler leaks fluid rapidly around the fittings or core
Depressurize the hydraulic system per the procedure before disconnecting any cooler lines. Inspect the cooler core for cracks and check fitting torque against the torque specifications on page 97. Replace the cooler filter and re-torque connections before pressure testing the repaired line.
Manual Section: Repair Instructions p. 97Travel drive fault with sluggish or no response when engaging travel
Check relevant fault codes in the ESX controller fault codes starting page 572 for travel drive issues, which may point to a stuck hydraulic priority valve or pump wear. Depressurize the system per before servicing the valve block, then inspect the pump for internal wear and verify priority valve movement is free.
Manual Section: ESX Controller Fault Codes p. 572Frequently Asked Questions
How to reset CASE WX145 error code after fuel filter replacement?
The manual indicates that fault codes, such as those related to filters (e.g., ERR_AIR_FILTER, ERR_HYDOIL_FILTER), cannot typically be rectified by the operator as they require special tools and knowledge. It is recommended to note the fault code and inform the Service Department accordingly for intervention. p. 571
What are the torque specifications for wheel mount bolts on a CASE WX165 excavator?
For wheel nuts on the WX165, the tightening torque is 450 Nm for M 22 x 1.5 bolts of quality 8.8, using a 30 (34) mm wrench. These bolts should be slightly oiled before tightening. p. 683
How does the fault code system work on a Case WX145 / WX165 / WX185 wheel excavator?
The manual organizes machine fault codes numerically in the 7000, 8000, 9000, and 13000 series (not 'E'-prefixed codes). Most filter and pressure faults such as ERR_AIR_FILTER, ERR_HYDOIL_FILTER, and ERR_ENGINE_OIL_PRESSURE require special tools to clear, so note the displayed code and give it to your CASE service department for diagnosis and reset. p. 572
How to reset hydraulic pressure warning on CASE WX145?
The manual states that faults, including hydraulic pressure warnings (e.g., ERR_ENGINE_OIL_PRESSURE), typically require special tools and knowledge for rectification by the Service Department. Operators are advised to note the fault code and contact the Service Department. p. 571
How will I receive this Case WX145, WX165, WX185 Service Manual?
You get a 746-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 Case WX145, WX165, WX185 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.
Does this Case WX145, WX165, WX185 manual include wiring diagrams?
Yes, this Case WX145, WX165, WX185 Service Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
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