| Parameter | Specification |
|---|---|
| Product Name | Pressure Sensor |
| COGENG Part Number | KHR41950 |
| OEM Equivalent | Sumitomo KHR41950 |
| Product Type | Hydraulic Pressure Sensor |
| Sensor Type | Piezoresistive pressure transducer |
| Output Type | 4-20 mA or 0.5-4.5V (Japanese spec) |
| Application | Hydraulic system pressure monitoring |
| Compatible Model | Sumitomo SH200A5 Excavator |
| Specification Standard | Japanese Genuine (OEM) |
| Material | Iron + Rubber (seals: NBR / FKM) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Supply Capacity | 500 PCS |
| Brand | Part Number |
|---|---|
| COGENG | KHR41950 |
| Sumitomo (Japan) | KHR41950 |
| Interchange | KHR41951, KHR41952, KHR41953, KM15-P02 |
| Parameter | Specification |
|---|---|
| Model | Sumitomo SH200A5 Excavator |
| Type | 20-ton Crawler Excavator |
| Series | A5 Series (Japanese market / Asian spec) |
| Engine | Isuzu / Sumitomo diesel engine |
| Operating Weight | 19,500 - 21,000 kg |
| Hydraulic Pressure | 350 bar (5,075 psi) |
| Production Years | A5 series specific |
| Step | Action | Critical Note |
|---|---|---|
| Preparation | ||
| 1 | Park SH200A5 on level surface, lower implements | Safety first |
| 2 | Shut off engine, remove key | Lock-out/tag-out |
| 3 | Relieve hydraulic pressure | Cycle controls with engine off |
| 4 | Allow machine to cool | Prevent burns |
| 5 | Locate faulty pressure sensor | Consult service manual |
| Removal | ||
| 6 | Clean area around sensor | Prevent contamination |
| 7 | Disconnect electrical connector (3-pin) | Inspect pins for damage |
| 8 | Place rag under sensor | Expect hydraulic oil seepage |
| 9 | Remove old sensor (19mm or 22mm wrench) | Note orientation |
| 10 | Clean threads in manifold | Remove old sealant |
| Installation | ||
| 11 | Apply thread sealant (if specified) | For NPT threads only |
| 12 | Install NEW O-ring / sealing washer | CRITICAL - DO NOT reuse |
| 13 | Install new sensor hand-tight, then torque | 25-35 Nm (18-26 ft-lbs) |
| 14 | Reconnect electrical connector | Ensure fully seated, click |
| Final | ||
| 15 | Start engine, check for leaks | Inspect around threads |
| 16 | Cycle hydraulic functions | Bleed air if needed |
| 17 | Connect Sumitomo diagnostic tool | Clear DTCs |
| 18 | Verify sensor reading | Compare to expected pressure |
| 19 | Test machine operation | Verify normal function |
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Pressure sensor | 25-35 Nm | 18-26 ft-lbs |
Frequently Asked Questions⚠️ IMPORTANT: Do not overtighten. Excessive torque can damage the sensor or threads.
Q: What Sumitomo models use the KHR41950 pressure sensor?
A: The COGENG KHR41950 pressure sensor is a direct OEM replacement specifically designed for the Sumitomo SH200A5 excavator model. This sensor is manufactured to Japanese genuine specifications and is typically used in the hydraulic or engine system for monitoring critical pressure circuits. Always verify this part number against your machine's parts manual or the original sensor's identification markings to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing pressure sensor on a Sumitomo SH200A5?
A: Common symptoms include inaccurate or erratic pressure readings on the monitor panel, active diagnostic trouble codes related to the pressure sensor circuit, degraded hydraulic performance or unexpected power reduction, the machine entering a failsafe or limp mode, intermittent hydraulic function response, or the engine control system failing to properly match engine speed to hydraulic load demand. A faulty pressure sensor can significantly impact overall machine performance, digging force, and fuel efficiency.
Q: How does the pressure sensor affect excavator operation?
A: The KHR41950 sensor provides real-time pressure data to the machine's electronic control system. This information is used to manage pump displacement, engine speed matching, and implement response. Accurate pressure sensing is essential for smooth hydraulic operation, preventing system overloads, and optimizing fuel consumption on the SH200A5 excavator.
Q: Is this sensor manufactured to Japanese genuine specifications?
A: Yes, the COGENG KHR41950 sensor is manufactured to exact Japanese OEM specifications for thread size, electrical connector type, pressure range, output signal characteristics, and response time. It meets the high standards expected for Sumitomo excavator components and is a direct plug-and-play replacement requiring no wiring modifications or adapters when installed on the compatible SH200A5 model.
Q: What is the warranty coverage for this pressure sensor?
A: COGENG provides a standard 12-month warranty against manufacturing defects from the date of installation. Proof of purchase and installation by a qualified technician are required. Warranty does not cover failure caused by hydraulic fluid contamination, over-pressurization, improper installation, overtightening, thread damage, or use on incompatible equipment.
Q: What should I check before installing the new pressure sensor?
A: Before installation, verify the hydraulic system is depressurized, inspect the sensor mounting port for debris or damage, check the electrical connector for corrosion, and apply the appropriate thread sealant if specified by the service manual. Torque the sensor to manufacturer specifications to prevent thread damage or hydraulic leaks. Contaminated hydraulic fluid can damage the new sensor, so verify fluid cleanliness.
Q: Does COGENG offer technical support for installation or troubleshooting?
A: Yes, COGENG provides complimentary technical support to assist with installation guidance and basic troubleshooting. For complex hydraulic system diagnostics on the Sumitomo SH200A5 excavator, we recommend consulting a certified Sumitomo service technician.
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