The COGENG VH894101290A is a premium direct OEM replacement speed sensor (RPM revolution sensor / engine speed sensor) specifically engineered for Kobelco SK200-8 and SK210-8 excavators equipped with Hino J05E engines. This critical engine component monitors engine RPM (crankshaft speed) and provides essential timing signals to the ECU for fuel injection control, engine protection, and tachometer display. Manufactured to meet or exceed original Kobelco specifications, this durable, plug-and-play sensor ensures reliable speed detection, accurate readings, and long service life in demanding construction and excavation applications.
| Parameter | Specification |
|---|---|
| Product Name | Speed Sensor / RPM Revolution Sensor |
| COGENG Part Number | VH894101290A |
| OEM Equivalent | Kobelco VH894101290A |
| Product Type | Magnetic Pickup / Inductive Speed Sensor |
| Sensor Type | Variable reluctance (magnetic) |
| Output Signal | AC voltage (frequency proportional to engine speed) |
| Application | Engine RPM monitoring / Crankshaft position |
| Compatible Models | Kobelco SK200-8, SK210-8 Excavators |
| Compatible Engine | Hino J05E |
| Material | Iron + Rubber (seals: NBR) |
| 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 | VH894101290A |
| Kobelco | VH894101290A |
| Hino | J05E engine sensor |
| Interchange | VH894101290B, VH894101290C, 894101290A, 894101290 |
| Parameter | Specification |
|---|---|
| Model | Kobelco SK200-8 Excavator |
| Type | 20-ton Crawler Excavator |
| Series | Dash 8 |
| Engine | Hino J05E |
| Displacement | 5.0L |
| Cylinders | 4 in-line |
| Engine Power | 110-120 kW (147-160 HP) |
| Operating Weight | 19,000 - 21,000 kg |
| Production Years | Approx. 2010-2015 |
| Parameter | Specification |
|---|---|
| Model | Kobelco SK210-8 Excavator |
| Type | 21-ton Crawler Excavator |
| Series | Dash 8 |
| Engine | Hino J05E |
| Displacement | 5.0L |
| Cylinders | 4 in-line |
| Engine Power | 115-125 kW (154-168 HP) |
| Operating Weight | 20,000 - 22,000 kg |
| Production Years | Approx. 2010-2015 |
| Parameter | Specification |
|---|---|
| Engine Model | Hino J05E |
| Displacement | 5.0L |
| Cylinders | 4 in-line |
| Fuel System | Common Rail |
| Emission Standard | Tier 3 / Stage IIIA |
| Applications | Kobelco SK200-8, SK210-8 |
Note: Verify compatibility with your equipment model, engine serial number, and production year before ordering. Contact COGENG with your machine details for exact application verification.
| Component | Function |
|---|---|
| Sensor Type | Variable reluctance (magnetic pickup) |
| Target | Flywheel ring gear teeth or crankshaft tone wheel |
| Output | AC voltage sine wave (frequency = engine RPM × number of teeth) |
| ECU Use | Engine speed calculation, fuel injection timing, protection |
| Engine Speed (RPM) | Output Voltage (AC) | Frequency (Hz) |
|---|---|---|
| Cranking (200 RPM) | 0.5 - 1.5 V | Low frequency |
| Idle (800 RPM) | 2.0 - 4.0 V | Medium frequency |
| Working (1,500 RPM) | 4.0 - 8.0 V | Higher frequency |
| Rated (2,200 RPM) | 6.0 - 12.0 V | High frequency |
| Function | Description |
|---|---|
| Engine RPM Display | Provides signal to tachometer (dash display) |
| Fuel Injection Timing | ECU uses speed signal for timing calculation |
| Engine Protection | Over-speed detection and derate |
| Starting Control | Starting motor disengagement signal |
| Diagnostics | Speed sensor fault detection (DTC) |
| Parameter | Specification |
|---|---|
| Sensor Type | Variable reluctance (magnetic pickup) |
| Output Signal | AC voltage (sine wave) |
| Output Voltage (min) | 1.0 V AC @ 200 RPM |
| Output Voltage (typical) | 2-12 V AC (engine speed dependent) |
| Coil Resistance | 200 - 500 Ω @ 20°C |
| Inductance | 100 - 300 mH |
| Air Gap | 0.5 - 1.5 mm (0.020 - 0.060 in) |
| Connector Type | 2-pin Deutsch / AMP |
| Parameter | Specification |
|---|---|
| Housing Material | Zinc-plated steel / Stainless steel |
| Thread Size | M14 × 1.5 |
| Hex Size | 17 mm (11/16") or 19 mm (3/4") |
| Seal Material | NBR (oil resistant) |
| Weight | 0.06 - 0.10 kg (0.13 - 0.22 lbs) |
| Overall Length | 50-70 mm |
| Tip Material | Magnetic steel |
| Pin | Function | Signal Type |
|---|---|---|
| Pin 1 | Signal (+) | AC voltage (variable frequency) |
| Pin 2 | Signal (-) / Shield | Ground / Shield |
| Parameter | Rating |
|---|---|
| Operating Temperature | -40°C to +125°C (-40°F to +257°F) |
| Storage Temperature | -40°C to +125°C (-40°F to +257°F) |
| Ingress Protection | IP67 (connector mated) |
| Vibration Resistance | 15G @ 50-2000Hz |
| Shock Resistance | 50G |
| Media Compatibility | Engine oil, diesel fuel, coolant |
| Feature | Benefit |
|---|---|
| Precision magnetic coil | Accurate speed detection across RPM range |
| Oil-resistant housing | Withstands engine environment |
| Sealed connector | IP67 for wet/dusty conditions |
| OEM-spec air gap | Direct fit to Hino J05E engine |
| 100% factory tested | Every sensor individually tested |
| Plug-and-play | Direct replacement, no calibration required |
| Test | Method | Acceptance Criteria |
|---|---|---|
| Coil Resistance | 100% measurement | 200-500 Ω |
| Output Voltage | Test stand with target wheel | 1.0V min @ 200 RPM |
| Insulation Resistance | 500V DC | ≥100MΩ |
| Dielectric Strength | 500V AC/60s | No breakdown |
| Temperature Cycle | -40°C to +125°C | No degradation |
| Vibration Test | 15G @ 50-2000Hz | No intermittent output |
✅ ISO 9001:2015 – Quality Management System
✅ RoHS Compliant
✅ REACH Compliant
✅ Meets Kobelco OEM Specifications
✅ Meets Hino J05E Engine Specifications
| Symptom | Root Cause | COGENG Solution |
|---|---|---|
| Engine cranks but no start | No speed sensor signal (ECU needs RPM to start) | New sensor restores signal |
| Tachometer reads zero (engine running) | Speed sensor failure | New sensor restores tachometer |
| Engine runs rough / misfire (J05E) | Erratic speed signal | New stable sensor output |
| Intermittent engine shutdown | Intermittent speed signal loss | New reliable sensor |
| Engine derate / reduced power | ECU not receiving proper speed signal | New sensor restores full power |
| Hard starting / long crank | Weak or missing speed signal | New sensor improves starting |
| Check engine light (DTC) | Speed sensor circuit failure | New 100% tested sensor |
| Engine overspeed (false) | Erratic signal causing false reading | New stable sensor |
| Black smoke on acceleration | Incorrect injection timing from bad sensor | New accurate sensor |
| DTC | Description | Resolution |
|---|---|---|
| P0335 | Crankshaft position sensor circuit | Replace speed sensor |
| P0336 | Crankshaft position sensor range/performance | Replace speed sensor |
| P0337 | Crankshaft position sensor low input | Replace speed sensor |
| P0338 | Crankshaft position sensor high input | Replace speed sensor |
| P0339 | Crankshaft position sensor intermittent | Replace speed sensor |
| P0720 | Output speed sensor circuit (if applicable) | Replace speed sensor |
| Tool | Purpose |
|---|---|
| 17mm or 19mm wrench | Remove/install sensor |
| Feeler gauge | Measure air gap (if adjustable) |
| Rags / paper towels | Clean area |
| Multimeter (optional) | Test sensor operation |
| Kobelco diagnostic tool | DTC clearing (recommended) |
| Step | Action | Critical Note |
|---|---|---|
| Preparation | ||
| 1 | Park machine on level surface, lower implements | Safety first |
| 2 | Shut off engine, remove key | Lock-out/tag-out |
| 3 | Allow engine to cool | Prevent burns |
| 4 | Locate speed sensor on flywheel housing (Hino J05E) | Typically at rear of engine, left side |
| Removal | ||
| 5 | Clean area around sensor | Prevent contamination |
| 6 | Disconnect electrical connector (2-pin) | Inspect pins for damage |
| 7 | Remove old sensor (17mm or 19mm wrench) | Note orientation |
| 8 | Clean threads in housing | Remove debris |
| Installation | ||
| 9 | Check sensor tip for damage | Should be clean, no metal debris |
| 10 | Install new sensor hand-tight | Do not cross-thread |
| 11 | Set air gap (if adjustable) | 0.5 - 1.5 mm (0.020 - 0.060 in) |
| 12 | Torque to specification | 15-25 Nm (11-18 ft-lbs) |
| 13 | Reconnect electrical connector | Ensure fully seated, click |
| Final | ||
| 14 | Start engine, check for leaks | Inspect around threads |
| 15 | Verify tachometer operation | Should read RPM |
| 16 | Connect Kobelco diagnostic tool | Clear DTCs |
| 17 | Test machine operation | Verify normal function |
| Fastener | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|
| Speed sensor | 15-25 Nm | 11-18 ft-lbs |
⚠️ IMPORTANT: Do not overtighten. Excessive torque can damage the sensor.
| Step | Action |
|---|---|
| 1 | Loosen lock nut (if equipped) |
| 2 | Screw sensor in until it contacts flywheel teeth |
| 3 | Back out sensor 1/2 to 3/4 turn |
| 4 | Measure air gap (0.5 - 1.5 mm) |
| 5 | Tighten lock nut to secure |
| 6 | Verify sensor does not contact flywheel |
| Note | Detail |
|---|---|
| J05E engine specific | Designed for Hino J05E engine in SK200-8/SK210-8 |
| Magnetic tip | Sensor tip is magnetic; may attract metal debris. Keep clean. |
| Air gap critical | If adjustable, correct air gap is essential for proper operation. |
| Do not overtighten | 15-25 Nm max. Overtightening damages the sensor. |
| Electrical connection | Ensure 2-pin connector is fully seated. |
| DTC clearing | Some ECUs require DTC clearing after replacement. |
| Flywheel condition | Inspect flywheel ring gear teeth for damage. |
| Keep original packaging | For warranty claims. |
| Test | Procedure | Acceptable Reading |
|---|---|---|
| Coil Resistance | Measure across pins | 200-500 Ω |
| Shield to ground | Measure shield pin to sensor body | <1 Ω |
| Output voltage (cranking) | AC voltage across pins while cranking | >1.0 V AC |
| Output voltage (idle) | AC voltage across pins at idle | 2-8 V AC (increases with RPM) |
| Insulation | Measure pins to sensor body | Should be open (OL) |
| Issue | Check | Solution |
|---|---|---|
| Engine won't start | Flywheel ring gear condition (Hino J05E) | Inspect for damaged teeth |
| No tachometer reading | Wiring harness, connector | Check continuity |
| Erratic reading | Loose connector, corroded pins | Clean, tighten |
| DTC present | Other sensor (cam position) | Check related sensors |
| Issue | Possible Cause | Solution |
|---|---|---|
| Engine won't start | Air gap too large | Adjust air gap |
| No tachometer reading | Connector loose | Reseat 2-pin connector |
| Erratic RPM reading | Air gap too small (sensor hitting teeth) | Adjust air gap (increase) |
| DTC returns | Wiring issue or other component | Check harness between sensor and ECU |
| Weak signal | Air gap too large | Adjust air gap (decrease) |
Frequently Asked Questions
Q: What Kobelco models use the VH894101290A speed sensor?
A: The COGENG VH894101290A speed sensor is a direct OEM replacement specifically designed for Kobelco SK200-8 and SK210-8 excavator models. This sensor is typically used for monitoring engine speed or hydraulic pump speed, providing critical RPM data to the machine's electronic control system. 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 speed sensor on a Kobelco SK200-8 or SK210-8?
A: Common symptoms include engine stalling or failure to start, intermittent engine shutdowns, erratic or incorrect RPM readings on the monitor panel, active diagnostic trouble codes related to the speed sensor circuit, the engine entering a derate or limp mode, loss of throttle response, or improper hydraulic pump control. A faulty speed sensor can significantly impact overall machine performance and productivity.
Q: How does the speed sensor affect excavator operation?
A: The VH894101290A sensor continuously monitors rotational speed and transmits real-time data to the machine's electronic control system. This information is used to control engine timing, fuel injection, pump displacement matching, and engine protection functions. Without accurate speed data, the control system cannot properly manage engine and hydraulic performance.
Q: Is this sensor a direct plug-and-play replacement?
A: Yes, the COGENG VH894101290A speed sensor is manufactured to exact OEM specifications for thread size, electrical connector type, signal output characteristics, and mounting dimensions. It is a direct plug-and-play replacement requiring no wiring modifications or adapters when installed on compatible Kobelco SK200-8 or SK210-8 excavator models.
Q: What is the warranty coverage for this speed 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 improper installation, wiring damage, physical impact, overtightening, thread damage, or use on incompatible equipment.
Q: What should I check before installing the new speed sensor?
A: Before installation, inspect the sensor mounting port for debris or damage, check the electrical connector for corrosion, and ensure proper torque is applied as specified by the service manual to prevent thread damage or incorrect sensor gap. Verify the wiring harness is in good condition to prevent signal interference.
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 engine or hydraulic diagnostics on Kobelco excavators, we recommend consulting a certified Kobelco service technician.
Q: How is the sensor protected during shipping?
A: Each COGENG VH894101290A speed sensor is individually sealed in a moisture-resistant poly bag and packed in a sturdy corrugated carton with protective foam padding. The electrical connector and sensor tip are capped to prevent damage during transit. In-stock items ship promptly for minimal downtime. Factory direct shipping ensures the product reaches you in optimal condition.
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