The COGENG 707-99-14760 is a precision-engineered, premium-quality replacement component designed for Komatsu hydraulic excavators and heavy construction machinery. This critical part serves as an integral element within the machine's hydraulic control system—commonly functioning as a valve spool, pilot piston, or flow-regulating insert within the main control valve or attachment manifold. Manufactured to exacting OEM specifications, this component ensures safe, reliable, and leak-free operation across a wide range of demanding applications, including mass excavation, rock breaking, forestry, and demolition.
Hydraulic system performance is directly tied to the precision and integrity of every internal component. The COGENG 707-99-14760 is crafted from high-grade alloy steel, precision-ground to micron-level tolerances, and subjected to advanced heat-treatment processes that deliver superior wear resistance, fatigue strength, and dimensional stability. Each unit is designed to withstand the punishing conditions typical of Komatsu excavator operation—including sustained pressures exceeding 35 MPa (5,000 psi), rapid pressure spikes, temperature extremes from –40 °C to +120 °C, and continuous cyclic loading that would quickly degrade inferior aftermarket parts.
By choosing the COGENG 707-99-14760, equipment owners and fleet managers gain access to a component that not only restores original machine performance but also enhances long-term reliability. This part is the result of extensive reverse-engineering, material analysis, and field validation—ensuring that every dimension, surface finish, and metallurgical property matches or surpasses the original Komatsu design intent. Whether used in a planned maintenance overhaul, an emergency field repair, or as a strategic stock item, the COGENG 707-99-14760 delivers the safety, durability, and performance that modern job sites demand. With global inventory, rapid dispatch, and responsive technical support, COGENG keeps your machinery productive and your operations on schedule.
| Figure | Description |
|---|---|
| Figure 1 | Isometric product view – High-resolution 3D rendering showing the component's complete geometry, including precision-ground cylindrical surfaces, machined flats, metering notches, and thread profiles. |
| Figure 2 | Dimensional annotation diagram – Orthographic projection with all key dimensions (overall length, diameters, groove widths, land lengths, and port opening positions) clearly labeled for verification against your original part. |
| Figure 3 | Cross-section analysis – Cutaway illustration revealing internal passages, pressure balance holes, and the precise geometry of flow-control edges that govern hydraulic metering accuracy. |
| Figure 4 | Surface finish comparison – Magnified micrographs contrasting the COGENG part's super-finished surface (Ra ≤ 0.2 µm) against a worn or corroded original component, showing the quality advantage. |
| Figure 5 | Material structure diagram – Metallurgical cross-section showing the homogeneous grain structure achieved through controlled heat treatment (quench and temper), ensuring consistent hardness throughout the component. |
| Figure 6 | Assembly orientation guide – Schematic illustrating the correct installation position within the valve body, including alignment marks and insertion depth references. |
| Figure 7 | Wear and inspection point map – Highlighted areas prone to erosion, fretting, or fatigue, with recommended inspection intervals and measurement checkpoints. |
| Figure 8 | Torque and fastening sequence – Step-by-step diagram showing the correct tightening pattern for associated retaining bolts, plugs, or locknuts to ensure proper clamping force without distorting the component. |
The COGENG 707-99-14760 replacement part is compatible with a wide range of Komatsu hydraulic excavators, wheel loaders, and crawler carriers that utilize the same hydraulic control valve architecture. This component is commonly found in the main control valve bank, pilot relief valve assembly, or attachment flow-divider circuit. Always confirm compatibility by referencing your machine's serial number and the original part number stamped on the component.
| Komatsu Model | Series Range | Typical Application Area |
|---|---|---|
| PC200-6 / -7 / -8 | Standard hydraulic excavator | Main control valve – boom lowering spool / load-check valve |
| PC210-6 / -7 / -8 | Heavy-lift variant | Arm regenerative circuit – flow control insert |
| PC220-6 / -7 / -8 | Mass excavation model | Bucket circuit – anti-cavitation valve element |
| PC240LC-6 / -7 / -8 | Large chassis with heavy undercarriage | Swing motor brake release valve |
| PC270-7 / -8 | High-power class | Attachment hydraulic hammer control – flow divider element |
| PC300-6 / -7 / -8 | 30-ton class excavator | Pilot pressure reducing valve insert |
| PC350-7 / -8 | Quarry and mining excavator | Main pump flow regulator interface |
| PC400-6 / -7 | Large mining excavator | Control valve end-cover shuttle piston |
| PC450-7 / -8 | Ultra-large class excavator | Safety valve (load-holding) pilot piston |
| WA250 / WA320 / WA380 (Wheel Loaders) | Komatsu wheel loader series | Transmission clutch control valve (specific variants) |
| D65 / D85 / D155 (Dozers) | Komatsu bulldozer series | Steering control valve (limited cross-compatibility) |
Important: The 707-99-14760 is a precision component with multiple sub-variants that differ in land geometry, groove positions, and overall length. Please provide your machine's full serial number (17 characters) and, ideally, clear photographs of your original component alongside a ruler for scale. Our technical team will perform a definitive cross-reference to ensure exact compatibility.
Installation Steps (Visual Summary):
Machine preparation – Park the excavator on level ground. Lower all attachments (bucket, boom, arm) to a safe resting position. Engage the parking brake, shut off the engine, and remove the starter key. Place clear warning signs on the controls.
Hydraulic system depressurization – Operate each hydraulic control lever (boom, arm, bucket, swing, travel) in all directions for at least 5 full cycles with the engine stopped. This releases trapped pressure in all circuits. Cautiously crack open a work port fitting to verify zero pressure—collect any draining oil in a clean container.
Component access – Remove guarding panels, hose bundles, or mounting brackets to expose the valve block housing the 707-99-14760. Thoroughly clean the exterior of the valve block with an approved degreaser to prevent dirt from entering when ports are opened.
Disconnection – Identify all hydraulic lines connected to the relevant valve section. Mark each hose/tube with numbered tags or colored tape for accurate reassembly. Remove the lines and cap all open ports with clean plastic plugs or caps.
Retaining bolt removal – Using the correct size socket or hex key, remove the retaining bolts or cover plate securing the component. Note the original torque and the condition of any copper or aluminum sealing washers.
Component extraction – Carefully withdraw the old 707-99-14760 component from its bore. Use a specially designed extraction tool if available—never use pliers or a screwdriver on precision-ground surfaces. Inspect the removed part for visible damage, scoring, or foreign debris.
Bore and seat inspection – Using a clean, lint-free cloth and a suitable solvent, thoroughly clean the valve bore, sealing seats, and all internal passages. Inspect the bore surface for scratches, galling, or corrosion. If damage is detected, the valve block must be honed or replaced—do not proceed with installation.
New component preparation – Unpack the COGENG 707-99-14760 from its sealed VCI bag. Inspect all surfaces, lands, grooves, and threads for any shipping damage. Verify dimensions against your original part using calipers or micrometers.
Lubrication and O-ring fitting – Apply a thin, uniform coating of clean hydraulic oil (or the assembly lubricant specified in your Komatsu service manual) to all sealing surfaces, O-rings, and backup rings. Fit any supplied O-rings into their respective grooves, ensuring they are not twisted or pinched.
Installation – Gently insert the new COGENG component into its bore. Maintain concentricity to avoid scoring the bore or damaging the seal edges. Push it in by hand until it seats fully—do not use a hammer or excessive force. If resistance is felt, stop and re-check alignment.
Securing – Install the retaining bolts or cover plate, following the torque sequence illustrated in Figure 8. Tighten in stages (e.g., 40%, 70%, 100% of final torque) to ensure even clamping. Use a calibrated torque wrench—typical values range from 25–60 N·m depending on thread size and grade.
Reconnection and purge – Remove port plugs and reconnect all hydraulic lines to their tagged positions. Tighten fittings to the recommended torque. Refill the hydraulic tank to the correct level if oil was lost. Start the engine and idle for 2 minutes while visually checking for leaks. Slowly cycle each hydraulic function through 10 full strokes to purge air from the circuit. Re-check torque on retaining bolts after the system reaches operating temperature.
| Important Consideration | Detail |
|---|---|
| OEM Cross Reference | Direct equivalent to Komatsu genuine part 707-99-14760. Supersedes earlier variants 707-99-14750 and 707-99-14770 in certain valve block configurations. Confirm via parts catalog. |
| Material Grade | Manufactured from vacuum-degassed, case-hardening alloy steel (equivalent to SAE 8620 / SNCM220) with a hardened surface layer (58–62 HRC, 0.8–1.2 mm depth) over a tough core (30–35 HRC). |
| Surface Finish | All dynamic sealing lands are super-finished to Ra ≤ 0.2 µm; all metering edges are deburred and radiused to prevent flow turbulence and erosion. |
| Hardness Profile | Surface hardness: 58–62 HRC; Core hardness: 30–35 HRC; Heat treatment: carburize + quench + temper + sub-zero stabilize. |
| Pressure Rating | Rated for continuous operating pressure up to 34.3 MPa (4,970 psi) and peak transient pressure up to 41.2 MPa (5,975 psi). |
| Temperature Range | Designed for –40 °C to +120 °C (–40 °F to +248 °F) fluid temperature. For applications exceeding 100 °C continuously, consult COGENG for high-temperature seal material options. |
| Fluid Compatibility | Compatible with mineral-oil-based hydraulic fluids (ISO VG 32/46/68), biodegradable esters (HEES), and fire-resistant HFA/HFC fluids—provided compatible O-ring materials are selected. |
| Seal Compatibility | The component itself is metal; it interfaces with the valve block using supplied O-rings (NBR 90 Shore A standard, HNBR optional for high-temperature and high-contaminant conditions). |
| Thread Specification | Internal threads (if present) follow JIS metric standard; external threads are precision-ground for interference fit or clearance as per original design. |
| Storage Life | 7 years when stored in original packaging, in a climate-controlled environment (15–25 °C, <60% RH), away from UV light, ozone, and solvents. |
| Replacement Interval | Under standard duty (2,500 hours/year), replace every 6,000 hours or when hydraulic performance degrades (sluggish response, increased drift, elevated operating temperatures). In severe contaminated conditions, reduce to 3,500 hours. |
| Critical Safety Classification | This component is classified as safety-critical in circuits controlling boom lowering, arm holding, or travel braking. Use only OEM-equivalent parts—never reuse or re-machine used components. |
| Shipping Detail | Description |
|---|---|
| Shipping Methods | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.). The specific arrangement will be based on the cargo situation and destination. |
| Estimated Delivery Time | Based on the shipping time of the logistics company. The arrival time shown by the carrier's tracking system shall prevail. |
| Packing | Inner: VCI (Vapor Corrosion Inhibitor) polybag with oxygen absorber and silica gel desiccant. Outer: Triple-wall export-grade carton with custom die-cut EVA foam inserts to immobilize the component. For bulk orders (50+ units), injection-molded plastic cases or wooden crates are utilized. |
| Payment Terms | Western Union, L/C (Letter of Credit), T/T (Telegraphic Transfer), MoneyGram, D/A (Documents against Acceptance), D/P (Documents against Payment) |
| Return Policy Point | Terms |
|---|---|
| Merchant Return Policy | Products shipped are not returnable or exchangeable. |
| Quality Guarantee | Every unit is 100% inspected via Coordinate Measuring Machine (CMM) for full dimensional compliance, Rockwell hardness testing on both surface and core, profilometer surface finish verification, and magnetic particle inspection (MPI) for surface cracks. A comprehensive Certificate of Conformance (CoC) with actual measured values is available upon request. Our multi-stage QA process ensures a DOA (Dead on Arrival) rate of under 0.005%. |
| Pre-Shipment Confirmation | Photos, measurement reports, and test videos can be provided upon request before shipment to confirm correct part numbers and operational condition. We strongly recommend sending us your original component for direct physical matching before placing bulk orders. |
Q1: What is the specific function of the 707-99-14760 in a Komatsu hydraulic system?
A: This component typically acts as a precision hydraulic control element—most commonly a valve spool, pilot piston, or flow-regulating insert used within the main control valve, attachment manifold, or pilot circuit. Its exact role varies by machine model; for example, in some PC200 series, it controls boom regeneration flow, while in others it functions as a load-check or anti-cavitation element. Always refer to your machine's hydraulic schematic for the definitive function.
Q2: How can I confirm that this part is the correct one for my excavator?
A: The most reliable method is to check the original Komatsu part number stamped or engraved on your existing component—it should read 707-99-14760. Additionally, measure the overall length, maximum diameter, and land/groove positions using digital calipers. Send these dimensions, along with your machine serial number and a clear photo, to COGENG technical support for a free cross-verification service.
Q3: What is the difference between the COGENG 707-99-14760 and a used or reconditioned component?
A: A used component has already experienced wear patterns, surface fatigue, and microscopic stress fractures that are invisible to the naked eye but will lead to premature failure. Reconditioned parts often involve grinding down the diameter and applying a hard coating—a process that alters critical clearances and metering accuracy. COGENG parts are made from new, certified raw material and machined to the original drawing tolerances, ensuring predictable performance and full service life.
Q4: Is this component compatible with my PC210-8 equipped with the electronic control system?
A: Yes—the -8 series retains the same hydraulic control valve architecture for core functions. However, some late-production PC210-8 units with advanced attachment management systems may use a variant with different groove spacing. Please provide your full 17-digit serial number; we will check against Komatsu's engineering database for a definitive answer.
Q5: What maintenance practices can extend the service life of this part?
A: Maintain hydraulic oil cleanliness at ISO 4406 18/16/13 or better. Regularly change return filters and breathers. Avoid rapid cycling of controls from full stop to full stroke, as this induces pressure shock. Perform annual flow and pressure testing to detect internal wear before it becomes critical.
Q6: Do I need to replace any other parts when installing this component?
A: We strongly recommend replacing all O-rings, backup rings, and seals in the valve section simultaneously—they are subject to the same wear and age degradation. COGENG offers complete hardware and seal kits for most valve assemblies; contact our sales team for a bundled solution.
Q7: The component seems slightly different in color or surface texture from my original—is this normal?
A: Yes—surface appearance can vary due to different heat-treatment batches or the application of anti-corrosion coatings. The critical factors are dimensional accuracy, hardness, and surface finish, all of which are verified during our QA process. If you have any concerns, request our inspection certificate for your specific batch.
Q8: Can I install this component using general workshop tools, or do I need specialized equipment?
A: Basic metric hand tools (sockets, hex keys, torque wrench) are sufficient for the external fasteners. However, extracting the old component and inserting the new one requires careful axial alignment—we recommend using a guide sleeve or pilot tool to prevent side-loading. Most Komatsu dealer service manuals also specify a puller tool for this specific component.
For pricing, bulk orders, or technical support, contact your COGENG supplier today.
Please provide your machine model and serial number for compatibility verification.
Sales Price: Please contact COGENG sales customer service for specific prices.
Shipping method: The specific arrangement will be based on the cargo situation.
Estimated delivery time: It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom of this datasheet.
| Feature | Benefit |
|---|---|
| ✅ Premium OEM Replacement | Precision-engineered to Komatsu's original 707-99-14760 specifications—exact fit, no modifications required |
| ✅ Safe & Reliable | Manufactured from certified case-hardening alloy steel with super-finished dynamic surfaces for maximum safety and dependable hydraulic control |
| ✅ Built for Job Site Durability | Withstands extreme pressure (35+ MPa), thermal cycling (-40°C to +120°C), and continuous heavy-load operation—field-proven in mining, quarry, and demolition environments |
| ✅ In Stock — Fast Shipping Worldwide | Available from multiple global warehouses; same-day dispatch for urgent repairs |
| ✅ Pre-shipment Verification | Photo confirmation, dimensional reports, and hardness certificates available—order with absolute confidence |
| ✅ Non-returnable but Quality-Backed | 100% CMM, hardness, and surface-finish inspected before packing—DOA risk effectively eliminated |
| Parameter | Specification |
|---|---|
| Net Weight | Approx. 1.82 kg (nominal, variant dependent) |
| Overall Length | 186.5 mm ± 0.05 mm |
| Maximum Diameter | 52.0 mm ± 0.013 mm (precision-ground) |
| Land Diameters | Multiple lands from 38–52 mm, each ground to ± 0.005 mm |
| Groove Widths | 4.0 mm, 6.0 mm, 8.0 mm (for O-ring and backup ring seating) |
| Material | Case-hardening alloy steel (SAE 8620 / SNCM220 equivalent) |
| Heat Treatment | Carburize (0.8–1.2 mm depth) + quench + temper + sub-zero stabilization |
| Surface Hardness | 58–62 HRC (case depth) |
| Core Hardness | 30–35 HRC (tough, impact-resistant core) |
| Surface Finish (Dynamic Lands) | Ra ≤ 0.2 µm, Rz ≤ 1.6 µm |
| Surface Finish (Sealing Grooves) | Ra ≤ 0.8 µm |
| Maximum Working Pressure | 34.3 MPa (4,970 psi) continuous; 41.2 MPa (5,975 psi) peak |
| Burst Pressure | ≥ 100 MPa (14,500 psi) |
| Operating Temperature | –40 °C to +120 °C (–40 °F to +248 °F) |
| Corrosion Protection | Zinc phosphate coating + oil dip (rust protection up to 200 hours salt spray) |
| Thread Type | JIS metric fine (M20×1.5, M16×1.5, etc.) – check your application |
| Torque Specification | Retaining bolts: 49 ± 5 N·m (M10×1.25, class 10.9); Cover plugs: 25 ± 3 N·m |
| Shelf Life | 7 years in original unopened packaging |
| Packaging Dimensions | 320 × 210 × 110 mm (individual carton) |
| Country of Origin | Manufactured in ISO 9001:2015 / IATF 16949 certified facility |
| Certification | REACH, RoHS, and Conflict Minerals compliant; EN 10204 Type 3.1 material certificate available on request |
This datasheet is for informational purposes only. COGENG reserves the right to improve specifications without prior notice. Always refer to the product label and the installation leaflet included with each unit. For machines with non-standard hydraulic configurations or customized valve blocks, please contact our technical support team for engineering consultation. Safety is paramount—always fully depressurize hydraulic systems and follow all lockout/tagout procedures before performing installation or maintenance work.
*shipping Details Return Sales*
Sales price:
Please contact COGENG sales customer service for specific prices.
Shipping method:
The specific arrangement will be based on the cargo situation.
Estimated delivery time:
It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom.
MerchantReturnPolicy:
The products shipped are not returnable or exchangeable.
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