The COGENG 181510-5531 (1815105531) is a premium direct replacement solenoid valve specifically engineered for Sumitomo SH200-A3 excavators, XG820 wheel loaders, and Isuzu 6BG1 diesel engines. This precision electro-hydraulic solenoid valve provides reliable control for critical machine functions including pilot control, attachment switching, swing brake release, and travel speed control. Manufactured to meet or exceed original equipment specifications, this durable, plug-and-play valve ensures consistent performance, fast response times, and long service life in demanding construction and excavation applications.
| Parameter | Specification |
|---|---|
| COGENG Part Number | 181510-5531 (1815105531) |
| OEM Equivalent | Sumitomo 181510-5531, Isuzu 181510-5531 |
| Product Type | Hydraulic Solenoid Valve |
| Voltage | 24V DC (Sumitomo/Isuzu standard) |
| Application | Pilot control, attachment switching, swing brake, travel speed |
| Compatible Models | Sumitomo SH200-A3 Excavator, XG820 Wheel Loader |
| Engine Compatibility | Isuzu 6BG1 |
| Material | High-quality plastic + Metal (durable construction) |
| Style | Compatible (direct replacement) |
| Maximum Supply Voltage | 5 Volts (DC) - solenoid control circuit |
| Item Weight | 5.8 Ounces (164 grams) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Brand | Part Number |
|---|---|
| COGENG | 181510-5531, 1815105531 |
| Sumitomo | 181510-5531 |
| Isuzu | 181510-5531 |
| Interchange | 181510-5530, 181510-5532, 8-98145491-0 |
Compatibility Notes:
Confirmed fit for Sumitomo SH200, SH200-A3, and XG820 excavators.
Engine compatibility: Isuzu 6BG1.
Replaces OEM numbers: 181510-5531, 1815105531.
Functions as a revolution (engine speed) sensor.
Note: Always cross-reference your original sensor’s connector shape, thread length, and pin configuration before installation. Aftermarket compatibility may vary by production year.
Service Life:
Average service life under normal operating conditions: 3,000–5,000 hours.
Service life may be reduced by excessive vibration, high operating temperatures, oil contamination, or improper air gap clearance.
Regular engine diagnostics (every 1,000 hours) can detect intermittent sensor faults before failure.
| Parameter | Specification |
|---|---|
| Model | Sumitomo SH200-A3 Excavator |
| Type | 20-ton Crawler Excavator |
| Series | A3 Series |
| Engine | Isuzu 6BG1 |
| Displacement | 6.5L |
| Cylinders | 6-cylinder |
| Engine Power | 110-120 kW (147-160 HP) |
| Operating Weight | 19,000 - 21,000 kg |
| Parameter | Specification |
|---|---|
| Model | Sumitomo XG820 Wheel Loader |
| Type | Wheel Loader |
| Engine | Isuzu 6BG1 |
| Displacement | 6.5L |
| Cylinders | 6-cylinder |
| Bucket Capacity | 2.0 - 2.5 m³ |
| Operating Weight | 12,000 - 14,000 kg |
| Application | Models |
|---|---|
| Excavators | Sumitomo SH200-A3, SH200-3, SH200-5 |
| Wheel Loaders | Sumitomo XG820, XG830 |
| Other Equipment | Various industrial applications with 6BG1 engine |
Note: This solenoid valve is designed for 24V DC systems common in heavy equipment. The control circuit operates at 5V DC maximum . Verify compatibility with your equipment model, engine serial number, and system voltage before ordering. Contact COGENG with your machine details for exact application verification.
| Parameter | Specification |
|---|---|
| Voltage Rating | 24V DC system |
| Maximum Supply Voltage (Control) | 5 Volts DC |
| Current Draw | 0.6 - 1.2 A @ 24V DC |
| Coil Resistance | 18 - 35 Ω @ 20°C |
| Duty Cycle | 100% continuous rating |
| Insulation Class | Class F (155°C) / Class H (180°C) |
| Protection Rating | IP65 / IP67 |
| Electrical Connection | 2-pin Deutsch DT type |
| Surge Protection | Built-in suppression diode |
| Power Consumption | Approx. 18-28 W |
Preparation:
Tools needed: 22 mm or 24 mm open-end wrench (depending on sensor body), clean lint-free cloth, dielectric grease, thread sealant (if sensor has tapered threads), multimeter (for resistance check).
Safety: Engine off, key removed, battery disconnected. Allow engine to cool completely.
Cleaning: Thoroughly clean the area around the sensor mounting hole to prevent debris from entering the engine block.
New sensor check: Verify resistance between signal and ground pins (typically 200–2,000 ohms for magnetic pickups; refer to service manual).
Removal:
Disconnect battery negative terminal.
Locate sensor – typically on the flywheel housing or timing gear case, near the crankshaft or camshaft gear.
Unplug the electrical connector – press tab and pull gently, do not pull on wires.
Clean external dirt and oil from sensor base.
Loosen sensor using correct wrench (counterclockwise). If seized, apply penetrating oil and wait 10 minutes.
Remove sensor by hand. Inspect old sensor tip for metal debris or damage – this may indicate internal engine wear.
Seal the opening immediately with a clean plug or tape to prevent contamination.
Installation:
Clean the mounting bore with a lint-free cloth and solvent if needed. Do not leave residue.
Apply anti-seize or thread sealant only if specified (do not coat entire sensor – only first 2–3 threads for steel housings into aluminum bores).
Insert new COGENG sensor gently – do not force against gear teeth.
Air gap critical: If adjustable, set gap to manufacturer spec (typically 0.5–1.2 mm / 0.020–0.047 in). For non‑adjustable (stop‑type), screw in until contacts the gear, then back out ½ to ¾ turn and lock the nut.
Tightening torque: 15–25 Nm (11–18 ft-lbs) for lock nut. Do not overtighten – may crack sensor housing.
Connect electrical plug – ensure clicks securely.
Apply dielectric grease to connector terminals (optional but recommended for moisture resistance).
| Fastener | Size | Torque (Nm) | Torque (ft-lbs) |
|---|---|---|---|
| Mounting bolts (M6) | M6 | 8-12 Nm | 6-9 ft-lbs |
| Hydraulic line fittings | As per fitting | Hand-tight + 1/4 turn | — |
⚠️ IMPORTANT: Always consult your Sumitomo or Isuzu equipment service manual for exact torque specifications.
Final:
Reconnect battery.
Start engine and verify no warning lights (engine speed sensor error should be cleared).
Check sensor signal using a multimeter or diagnostic tool (AC voltage output should increase with engine RPM).
Test machine: Run at low, mid, and high idle for 3–5 minutes. Verify stable RPM reading and no erratic throttle behavior.
Inspect for oil leaks around sensor mounting area after first 10 minutes of operation.
Re-torque lock nut after first 5 hours of use if using a non‑locking adjustment nut.
Frequently Asked Questions:
Q1: This sensor shows RPM but intermittently cuts out. Is it the sensor or wiring?
A: Intermittent failure is often a wiring issue (chafed wire, loose connector pins) or damaged reluctor ring. Measure sensor resistance hot and cold. If resistance fluctuates or goes open, replace sensor. If stable, check harness continuity and ECU input circuit.
Q2: Can I use this sensor on other Sumitomo models besides SH200?
A: Possibly – models with Isuzu 6BG1 engine and compatible flywheel housing (e.g., SH120, SH240). Always compare OEM part numbers and connector pinouts. Do not assume compatibility.
Q3: How do I test this sensor with a multimeter?
A: Set to AC volts. Crank engine (do not start). Sensor should produce ≥0.5 V AC at cranking speed. Set to Ohms (2000 scale): Typical resistance between 400–1,200 ohms across signal pins. Infinite resistance to ground = good isolation.
Q4: Engine won’t start after installation – is the sensor the cause?
A: On most 6BG1 machines, the revolution sensor alone will not prevent starting (engine uses crankshaft position sensor for fueling). However, some models use this sensor for injection timing. Recheck air gap, connector pin match, and if sensor type matches original (hall effect vs. magnetic).
Q5: What should I do if the new sensor gives an erratic signal?
A: Check air gap first – too large = low signal, too small = contact risk. Second, inspect the target gear for missing or bent teeth. Third, verify sensor is fully seated and not cross-threaded. Finally, try swapping sensor wires if polarity matters (especially for active sensors).
Q6: Does the COGENG sensor come with a warranty?
A: Usually 12 months limited warranty against manufacturing defects. Always retain purchase receipt. Warranty does not cover improper installation, physical damage, or contamination.
Q7: How tight should the lock nut be?
A: 15–25 Nm (11–18 ft-lbs). Over-tightening can crack the plastic housing or compress internal coil. Under-tightening allows vibration, changing the air gap.
Q8: There is oil inside the old sensor connector – is that normal?
A: No. Oil wicking means the sensor internal seal failed or there is an external leak from the engine. Clean thoroughly and check new sensor after 1 hour of run time for oil reappearance. If present, replace sensor and inspect engine breather for excessive blow-by.
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