ranroswang@hksparkling.com 
+86 138 2341 8469
Maintenance Impact: Pressure Sensor Failure on SR2000G Hydraulics
- Maintenance Impact: Pressure Sensor Failure on SR2000G Hydraulics
- Why the pressure sensor matters in SR2000G hydraulic systems
- Common causes of pressure sensor failure
- Operational symptoms when the pressure sensor (8-98027456-0) fails
- Diagnosis and step-by-step troubleshooting
- Maintenance and preventive measures to reduce failure risk
- Replacement and repair options: Choosing SPARKLING MACHINERY part for SR2000G
- Safety and compliance considerations during maintenance
- Cost, downtime, and ROI: economic impact of sensor failure
- Brand advantage: Why choose SPARKLING MACHINERY 8-98027456-0
- FAQ — Pressure Sensor (8-98027456-0) for SR2000G Hydraulics
- Q: What are the first steps if my SR2000G shows a pressure sensor fault?
- Q: Can I clean a contaminated pressure sensor or should I replace it?
- Q: How do I confirm the SPARKLING MACHINERY 8-98027456-0 is compatible with my SR2000G?
- Q: Is calibration required after replacing the pressure sensor?
- Q: How often should pressure sensors be inspected or replaced?
- Contact & View Product
- References and authoritative sources
Maintenance Impact: Pressure Sensor Failure on SR2000G Hydraulics
Why the pressure sensor matters in SR2000G hydraulic systems
The pressure sensor is a small but critical component in hydraulic excavators. On the Hitachi SR2000G and related models (CP220-3/EG70R-3/MA200/VR516FS), the sensor constantly monitors hydraulic fluid pressure and provides real-time feedback to the machine's control system. That feedback is used for load sensing, pump control, safety limits, and automated performance adjustments. When the pressure sensor fails or reports inaccurate values, the control system can make incorrect decisions, potentially reducing machine performance, increasing wear, or creating safety hazards.
SPARKLING MACHINERY NEW 8-98027456-0 Pressure Sensor is a core hydraulic/engine system component for Hitachi CP220-3/EG70R-3/MA200/SR2000G/VR516FS excavators (construction/mining use). It accurately monitors fluid pressure and transmits real-time data to the control system, ensuring safe and stable equipment operation.
Meeting Hitachi OEM standards (Part No.: 8-98027456-0), it features high precision and environmental adaptability, guaranteeing seamless compatibility and reliable long-term performance.
Common causes of pressure sensor failure
Understanding why sensors fail helps prioritize preventive maintenance. Common causes include:
- Contaminated hydraulic fluid (particles, water, varnish) that damages the sensing element.
- Hydraulic shocks or pressure spikes exceeding sensor ratings.
- Electrical faults: wiring chafing, poor connectors, or short circuits.
- Corrosion from moisture ingress or aggressive environments.
- Thermal stress from extreme temperatures or rapid cycling.
- Improper installation (incorrect torque, misalignment) or mechanical damage during service.
- Aging and normal wear-out after many operating hours, especially under heavy-duty cycles.
Operational symptoms when the pressure sensor (8-98027456-0) fails
When a pressure sensor malfunctions, symptoms can be subtle or severe. Identifying the symptom pattern quickly minimizes downtime and prevents secondary damage. Typical symptoms include:
- Erratic or fluctuating gauge readings.
- Warning lights or error codes related to pressure or hydraulic faults.
- Reduced power, slow response, or pump hunting (rapid pump speed changes).
- Unexpected safety shutdowns or limp modes triggered by false high-pressure readings.
- Unusual noises from the pump, valves, or actuators due to incorrect control inputs.
Quick reference table: failure modes, observed signs, and impact on SR2000G operation.
| Failure Mode | Typical Symptom | Operational Impact |
|---|---|---|
| Open/No signal | No pressure data; alarm codes | Machine may enter safe mode or lose hydraulic performance |
| Shorted signal | Constant max/min reading; erratic control | Incorrect valve actuation; potential overpressure events |
| Drift/Slow degradation | Gradual loss of accuracy; intermittent faults | Reduced efficiency; increased fuel and wear |
| Intermittent connectivity | Fluctuating readings during motion/vibration | Unpredictable control behavior; operator frustration |
Diagnosis and step-by-step troubleshooting
Follow a structured approach to diagnose whether the pressure sensor is the root cause or a symptom of another issue.
- Capture error codes and symptoms: Record any alarm codes from the machine controller and note when the issue appears (cold start, under load, after idle).
- Visual inspection: Check sensor body, connector, and harness for physical damage, corrosion, or fluid ingress. Ensure proper mounting and torque.
- Check hydraulic fluid: Inspect fluid for contamination, foaming, or water. Replace or filter if necessary; bad fluid can damage new sensors rapidly.
- Electrical checks: With the machine off, test wiring continuity and insulation resistance. With system energized, measure the sensor's supply voltage and output signal (0–5 V, 4–20 mA, or vehicle-specific CAN output) and compare to expected values from service manual.
- Swap or simulate: If available, swap the suspect sensor with a known good unit (SPARKLING MACHINERY 8-98027456-0) or use a calibrated simulator to verify controller response.
- Logger/Scope: Use a data logger or oscilloscope to observe signal during operation; look for noise, spikes, or dropouts caused by wiring or grounding issues.
- Cross-check with secondary gauges: If the machine has a mechanical gauge or separate sensor, compare readings under the same conditions.
- Refer to OEM troubleshooting: Follow Hitachi diagnostic flows for SR2000G—codes and recovery steps are model-specific.
Maintenance and preventive measures to reduce failure risk
Preventive maintenance reduces the chance of unexpected sensor failures and extends component life:
- Regular hydraulic fluid analysis (particle count, water content) and adherence to recommended fluid change intervals.
- Replace inline filters per schedule and install contamination monitors where possible.
- Inspect sensor connections and harness routing during scheduled services; secure loose wiring to prevent chafing.
- Use protective boots or shields for sensors in high-impact or corrosive areas.
- Perform calibration checks after major hydraulic repairs or when new sensors are installed.
- Train operators to recognize early symptoms and report anomalies immediately.
Replacement and repair options: Choosing SPARKLING MACHINERY part for SR2000G
When replacement is necessary, selecting a compatible, high-quality sensor is essential. The Hitachi HIGH-QUALITY EXCAVATOR PARTS MADE IN CHINA NEW CP220-3 EG70R-3 MA200 SR2000G VR516FS 8-98027456-0 PRESSURE SPARKLING MACHINERY sensor is designed to meet Hitachi OEM standards for fit, function, and environmental resistance. Key points when replacing:
- Always use an exact-fit sensor (Part No. 8-98027456-0) or OEM-approved equivalent to avoid calibration and connector mismatch.
- Follow torque and sealing instructions during installation to prevent leaks or mechanical stress on the sensor housing.
- After installation, run functional checks and, if the controller supports it, perform automatic or manual sensor calibration.
- Keep a spare sensor in inventory for critical machines to minimize downtime.
Safety and compliance considerations during maintenance
Work on hydraulic systems involves high pressure and energy. Observe safety protocols:
- Depressurize hydraulic circuits before disconnecting sensors or fittings.
- Use proper PPE (gloves, eye protection) as hydraulic fluid injection injuries are severe.
- Follow lockout/tagout procedures for electrical and mechanical isolation.
- Ensure replacement sensors meet environmental and EMC specifications required by the machine.
Cost, downtime, and ROI: economic impact of sensor failure
Sensor failures can be inexpensive if caught early but costly if allowed to cascade into damaged pumps, valves, or lost production. Consider these points:
- Direct replacement cost: typical aftermarket pressure sensors range widely; using a high-quality OEM-equivalent like the SPARKLING MACHINERY 8-98027456-0 reduces the risk of repeat failures.
- Indirect costs: machine idle time, operator downtime, expedited shipping, and potential secondary damage to hydraulic components.
- ROI of preventive maintenance: regular fluid analysis and scheduled sensor inspections often cost a fraction of a day’s lost production and extended repairs.
| Scenario | Estimated Direct Cost | Downtime | Notes |
|---|---|---|---|
| Planned sensor replacement | Low–Medium | 1–4 hours | Minimal disruption if spare available |
| Emergency replacement after failure | Medium–High (rush shipping) | 4–24+ hours | May require diagnostics and additional repairs |
| Failure causing pump/valve damage | High | Days | Highest cost: parts + extended downtime |
Brand advantage: Why choose SPARKLING MACHINERY 8-98027456-0
When selecting replacement parts for Hitachi SR2000G hydraulics, consider these advantages of SPARKLING MACHINERY parts:
- OEM compatibility: Designed to match Hitachi Part No. 8-98027456-0 specifications for plug-and-play installation.
- Quality control: Manufactured and tested to withstand vibration, temperature extremes, and contamination commonly encountered in construction and mining.
- Cost-effective: Competitive pricing compared to dealer-only parts while maintaining high accuracy and durability.
- Availability: Easier procurement and spare stocking reduces lead times and keeps machines running.
- Technical support: Suppliers typically offer installation guidance and warranty support for genuine replacement parts.
FAQ — Pressure Sensor (8-98027456-0) for SR2000G Hydraulics
Q: What are the first steps if my SR2000G shows a pressure sensor fault?
A: Safely park the machine, note any alarm codes, visually inspect sensor and harness, check hydraulic fluid condition, and capture data logs if possible. If unsure, contact a qualified technician before attempting repairs.
Q: Can I clean a contaminated pressure sensor or should I replace it?
A: Temporary cleaning may help if contamination is external, but internal contamination that affects the sensing element usually requires replacement. Always inspect connectors and O-rings and follow the manufacturer's guidance.
Q: How do I confirm the SPARKLING MACHINERY 8-98027456-0 is compatible with my SR2000G?
A: Confirm part number (8-98027456-0) and compare connector type, electrical output, and mounting thread with the original sensor. Suppliers can provide cross-reference documentation and compatibility assurances.
Q: Is calibration required after replacing the pressure sensor?
A: Some systems require a calibration or sensor offset reset after replacement. Check your machine's service manual; if in doubt, perform a functional test under controlled conditions.
Q: How often should pressure sensors be inspected or replaced?
A: Inspect sensors during scheduled hydraulic maintenance intervals (e.g., fluid change, filter service). Proactive replacement intervals depend on operating conditions but consider a preventive swap if the machine works in severe environments or after a defined number of operating hours.
Contact & View Product
If you need immediate replacement or technical support for the SPARKLING MACHINERY NEW 8-98027456-0 Pressure Sensor, contact your parts supplier or request a quote from our sales team. For urgent downtime, keep a spare sensor on hand to minimize downtime. To request pricing, installation guidance, or datasheets, contact our parts desk or authorized distributor—mention Part No. 8-98027456-0 and model SR2000G.
References and authoritative sources
Further reading and official references used for technical context:
- Pressure sensor — Wikipedia: https://en.wikipedia.org/wiki/Pressure_sensor
- Hydraulics — Britannica: https://www.britannica.com/technology/hydraulics
- Hydraulics — Wikipedia: https://en.wikipedia.org/wiki/Hydraulics
- Hitachi Construction Machinery — Global products (excavators overview): https://www.hitachicm.com/global/products/excavators/
- General machine safety and LOTO guidance — OSHA: https://www.osha.gov/ (search lockout/tagout)
Upgrading Excavator Hydraulics: Components to Consider 2026
Understanding Wear Patterns on Excavator Hubs
How Warranty and Support Affect Parts Selection
Common Wear Parts of Excavator and Replacement Tips 2026
faq
Can I get technical support for installing your parts?
Absolutely. We provide technical support and guidance for the installation and maintenance of our parts. Our team is available to assist you with any questions or concerns to ensure proper installation and optimal performance.
What types of excavator parts do you manufacture?
We manufacture a wide range of excavator parts, including hydraulic components, undercarriage parts, engine parts, wear parts, and more. Our products are designed to fit a variety of excavator models and are built to meet the highest quality standards.
What is the lead time for receiving excavator parts?
Our typical lead time depends on the complexity and quantity of the order. For standard parts, delivery usually takes between 7 to 14 days. For custom orders, the lead time may vary, but we always strive to ensure timely delivery.
Are your products covered by a warranty?
-
Yes, all of our excavator parts come with a warranty to ensure quality and reliability. The warranty period may vary depending on the type of part. Please contact us for detailed warranty terms for specific products.
-
How do you ensure the quality of your parts?
We follow strict quality control procedures throughout the manufacturing process. Our parts are tested for durability, performance, and precision to ensure they meet industry standards and exceed customer expectations.
KOMATSU HIGH-QUALITY EXCAVATOR PARTS MADE IN CHINA NEW HD325 HD405 HM250 HM300 418-43-37681 PRESSURE SENSOR SPARKLING MACHINERY
SPARKLING MACHINERY NEW 418-43-37681 Pressure Sensor is a core hydraulic/engine system component for Komatsu HD325/HD405/HM250/HM300 excavators (construction/mining use). It accurately monitors fluid pressure and transmits real-time data to the control system, ensuring safe and stable equipment operation.
Meeting Komatsu OEM standards (Part No.: 418-43-37681), it features high precision and environmental adaptability, guaranteeing seamless compatibility and reliable long-term performance.
HYUNDAI EXCAVATOR SPARE PARTS USED ON R140W-7 R140W-7A R170W-7 R170W-7A R200W-7 31LF-00500 PRESSURE SENSOR
SPARKLING Hyundai Excavator Pressure Sensor (31LF-00500) is designed for Hyundai Heavy Equipment models R140W-7, R140W-7A, R170W-7, R170W-7A, and R200W-7. Ensures precise hydraulic system performance and durability for Hyundai Construction Equipment.
Part number 31LF-00500 (also written as 31LF00500) is a Pressure Sensor (specifically a hydraulic or fuel injection pressure sensor) used extensively in Hyundai heavy equipment.
Compatible Equipment
Hyundai Wheel Excavators: R55W-7, R140W-7, R170W-7, R200W-7 (including 'A' variants).
Hyundai Wheel Loaders: HL730-7, HL740-7, HL757-7, HL760-7, HL770-7, HL780-7A.
Hyundai Forklifts: 100D-7, 110D-7E, 180D-7E, 50D-7E, 80D-7E.
Series: Hyundai 7-Series, 7 Series Wheel Loader.
Product Details
Component Type: Pressure Sensor / Pressure Switch.
Function: Delivers critical pressure data to the engine or hydraulic control system for safety and operational efficiency.
Weight: Approximately 4.2 ounces (120 grams).
VOLVO EXCAVATOR PARTS MADE IN CHINA NEW EC300D EC250D EC220D EC235D EC160D 17253748(14613051) PRESSURE SENSOR SPARKLING MACHINERY
SPARKLING MACHINERY NEW EC300D EC250D EC220D EC235D EC160D 17253748(14613051) Pressure Sensor is a critical hydraulic/pneumatic monitoring component for Volvo EC300D, EC250D, EC220D, EC235D, and EC160D excavators (widely used in construction, mining, and infrastructure projects). As the "pressure guardian", it real-time detects hydraulic system pressure (e.g., boom, bucket circuits) or pneumatic pressure—alerting operators to abnormal pressure spikes/drops during tasks like digging, lifting, and rock breaking, while preventing component damage from overpressure and ensuring stable equipment operation.
Meeting Volvo OEM standards (part nos. 17253748/14613051), it endures -30°C to 100°C temperatures, resists oil corrosion and vibration, and guarantees accurate pressure signal output. Strict testing ensures seamless compatibility with the five Volvo models and long-term pressure monitoring reliability.
VOLVO EXCAVATOR PARTS MADE IN CHINA NEW A35G A40G A45G EC210D L150G 22899626 PRESSURE SENSOR SPARKLING MACHINERY
SPARKLING MACHINERY NEW A35G A40G A45G EC210D L150G 22899626 Pressure Sensor is a key hydraulic monitor for Volvo’s 5 excavator models (construction/mining use). It real-time tracks hydraulic pressure, sends accurate signals to the control unit, prevents overpressure damage, and maintains stable operation. Meeting Volvo OEM standards (22899626), it resists -30°C to 100°C temps, vibration, and oil corrosion, ensuring compatibility and reliability.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
foreverlucia1