| Parameter | Specification |
|---|---|
| Product Name | Caterpillar Foot Pedal Valve / Travel & Auxiliary Hydraulic Control Valve |
| Primary Part Numbers | 307-3993, 309-5808, 247-5275, 520-1347 561-7001 |
| Brand | COGENG (Premium Aftermarket Replacement) |
| Condition | Brand New, 100% Function Tested and Pressure Verified |
| Component Type | Hydraulic Foot Pedal Control Valve — Pilot Pressure Proportional Control |
| Compatible Equipment | Caterpillar 301.7, 320GC, 336G Hydraulic Excavators |
| Function | Converts Operator Foot Pedal Movement into Proportional Hydraulic Pilot Pressure Signals for Travel or Auxiliary Circuit Control |
| Valve Type | Two-Stage Proportional Pressure Reducing Valve with Mechanical Pedal Actuation |
| Construction | High-Strength Cast Iron / Aluminum Alloy Body; Precision-Ground Steel Spool; Hardened Steel Plunger; Bronze Bushings |
| Number of Spools | Single or Dual Spool Configuration (Application Dependent) |
| Pedal Type | Folding / Removable Foot Pedal with Non-Slip Rubber Surface (Model Dependent) |
| Operating Pressure | Pilot Pressure Range 0 – 4.0 MPa (0 – 40 bar / 580 psi) |
| Maximum Inlet Pressure | 5.0 MPa (50 bar / 725 psi) Pilot Supply Pressure |
| Hydraulic Fluid Compatibility | Mineral-Based Hydraulic Oil, Synthetic Hydraulic Oil, Biodegradable Hydraulic Fluid (Per Cat Specification) |
| Operating Temperature | -30°C to +100°C (Hydraulic Fluid and Ambient) |
| Connector Type | OEM-Standard Hydraulic Port Fittings with O-Ring Face Seals |
| Mounting Type | Floor-Mounted Pedal Assembly with OEM-Standard Bolt Pattern |
| Quality Assurance | 100% Bench Tested — Pressure Response Curve, Hysteresis, Spool Return, Internal Leakage, and Pedal Force Verification |
| Certification | ISO 9001 Certified Manufacturing Facility |
| Place of Origin | Guangdong, China |
| Supply Capacity | 300 Pieces per Month |
| Shipping Weight | 2.5 – 4.0 kg (Gross, Configuration Dependent) |
| Package Dimensions | 35 x 25 x 20 cm (Individual Box) |
| Packing | Inner: PP Bag with Anti-Static Protection; Outer: Heavy-Duty Export-Grade Corrugated Carton Box with Custom-Cut Protective Foam |
| Payment Terms | Western Union, L/C (Letter of Credit), T/T (Telegraphic Transfer), MoneyGram, D/A (Documents against Acceptance), D/P (Documents against Payment) |
| Shipping Mode | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.) — Optimized Based on Cargo Situation and Destination |
| Minimum Order Quantity | Acceptable Trial Order — Single Unit Orders Welcome |
| Return Policy | Non-Returnable / Non-Exchangeable (Comprehensive DOA Guarantee Included) |
The COGENG Foot Pedal Valve, identified by primary part numbers 307-3993, 309-5808, 247-5275, and 520-1347, is a precision-manufactured, high-performance hydraulic control component engineered as a direct, form-fit-function replacement for the original equipment foot pedal valve used in Caterpillar 301.7, 320GC, and 336G hydraulic excavators. This valve serves as the operator's primary interface for controlling two critical machine functions: the travel circuit, which propels the excavator forward and backward via the left and right track motors, and the auxiliary hydraulic circuit, which provides proportional flow to attachments such as hydraulic breakers, thumbs, grapples, shears, and compactors.
The foot pedal valve is a fundamentally important component in the operator control hierarchy of a modern excavator. It converts the mechanical movement of the operator's foot into precisely modulated hydraulic pilot pressure signals that are transmitted to the machine's main control valve. In the travel mode, the foot pedal valve provides proportional control of the left and right track motors, allowing the operator to travel forward, reverse, turn, and counter-rotate the machine with smooth, infinite modulation. In the auxiliary mode, the same or a separate foot pedal valve provides proportional control of the auxiliary hydraulic circuit, enabling the operator to vary the flow rate and pressure delivered to an attachment from zero to maximum with precise, linear foot pedal travel. This proportional control capability is essential for tasks that require fine modulation, such as operating a hydraulic breaker at partial power, feathering a thumb to grip a load, or precisely positioning a grapple.
The construction of the COGENG foot pedal valve reflects the demanding requirements of the application. The valve body is manufactured from high-strength cast iron or aluminum alloy, providing structural rigidity and resistance to vibration-induced fatigue. The internal spool is precision-ground from hardened steel to exacting tolerances, matched to a honed bore within the valve body for minimal leakage and consistent response. The spool is actuated by a hardened steel plunger and precision return springs that provide a linear pedal force curve and positive return to the neutral position when the operator's foot is released. The pedal itself features a non-slip rubber surface for secure operation in all conditions, and is designed to fold down or be removable to prevent interference during other machine operations.
The operating environment for a foot pedal valve in an excavator cab is significantly different from that of an external hydraulic component. While protected from the external weather and contamination, the foot pedal valve is subjected to continuous mechanical cycling—the operator may actuate the travel pedals hundreds of times per day—and must maintain its precision response over hundreds of thousands of cycles. It is also exposed to the accumulation of dust and debris tracked into the cab, spilled liquids, and the wear and tear of daily machine operation. The most common failure modes of the OEM foot pedal valve include internal spool wear causing increased leakage and sluggish response, return spring fatigue causing the pedal to fail to return fully to the neutral position, pedal pivot bushing wear causing excessive free play and imprecise control, and external seal leakage.
COGENG's foot pedal valve is engineered to resolve these failure modes through premium materials and precision manufacturing. The spool and bore are manufactured to exacting tolerances and honed for a precise fit. The return springs are manufactured from high-quality spring steel and heat-treated for consistent force and long fatigue life. The pedal pivot bushings are manufactured from self-lubricating bronze for smooth, wear-resistant operation. Every valve undergoes a complete bench test protocol before shipment, verifying pressure response curve linearity, hysteresis, spool return force, internal leakage, and pedal force characteristics against OEM specifications.
The foot pedal valve is validated for the following Caterpillar excavator models. Always provide your complete machine PIN and serial number for final compatibility verification.
| Brand | Model | Machine Class |
|---|---|---|
| Caterpillar | 301.7 | Mini Hydraulic Excavator (1.7-Ton Class) |
| Caterpillar | 320GC | Medium Hydraulic Excavator (20-Ton Class) |
| Caterpillar | 336G | Large Hydraulic Excavator (36-Ton Class) |
Complete Foot Pedal Valve Assembly (1 unit): The fully assembled valve, including the valve body, internal spool, return springs, pedal pivot mechanism, foot pedal with non-slip rubber surface, and all hydraulic port fittings.
Pre-Installed O-Rings and Seals: All external sealing elements required for leak-free installation, including port O-rings and mounting face seals.
Protective Port Plugs: Plastic or metal caps installed on all hydraulic ports to prevent contamination ingress during shipping and handling.
Mounting Hardware Kit: OEM-specification bolts and washers for mounting the valve assembly to the cab floor.
PP Bag Inner Packing and Export Carton: The valve is sealed in a PP bag with anti-static protection and packed in a rigid, double-wall corrugated carton with custom-cut protective foam.
Note: The following descriptions provide a detailed technical walkthrough of accompanying high-resolution product photographs.
Image 1: Complete Valve Assembly — Isometric View
A high-resolution studio photograph of the foot pedal valve shown from a three-quarter isometric angle. The image clearly displays the valve body with its hydraulic port fittings, the pedal pivot mechanism, and the foot pedal with its non-slip rubber surface.
Image 2: Hydraulic Port Interface — Detail
A close-up view of the valve body's hydraulic port interface, showing the inlet, outlet, and tank ports with their O-ring face seal grooves. The port identification markings are clearly visible.
Image 3: Pedal Pivot and Return Mechanism — Detail
A detailed image of the pedal pivot mechanism, showing the bronze bushings, the return springs, and the spool actuation plunger. The precision construction of the linkage is evident.
Image 4: Foot Pedal Surface — Non-Slip Detail
A close-up view of the foot pedal surface, showing the molded non-slip rubber texture pattern designed for secure operation in all conditions.
Image 5: Identification Markings
A photograph showing the valve's identification plate or laser-etched markings, including the part numbers 307-3993, 309-5808, 247-5275, 520-1347, and the COGENG brand logo.
Multiple Part Number Coverage: The part numbers 307-3993, 309-5808, 247-5275, and 520-1347 represent related foot pedal valve configurations used across the specified Caterpillar excavator models. The correct part number for your specific machine depends on the machine model, serial number prefix, and whether the valve controls travel, auxiliary, or both functions. Our technical team will verify the correct part number based on your machine's PIN.
Travel vs. Auxiliary Function: Foot pedal valves in excavators may be configured for travel control, auxiliary attachment control, or both. Verify which function your machine requires before ordering. The part number and pedal configuration differ between these applications.
Pedal Configuration: Some applications use a single foot pedal, while others use dual foot pedals (left and right) for independent track control. The pedal may also be fixed or folding. Verify your machine's specific configuration.
Hydraulic System Depressurization Required: Before replacing the foot pedal valve, the hydraulic system must be fully depressurized. The pilot circuit retains pressure after engine shutdown.
Professional Installation Required: Foot pedal valve replacement involves working with the hydraulic pilot circuit and the operator control system. Installation should be performed by a qualified heavy equipment technician with access to Caterpillar Electronic Technician (ET) for post-installation system verification.
Note: This is a summarized procedural guide. Always follow the Caterpillar service manual for your specific model.
Step 1: Safety Lockout and System Depressurization
Park the machine on level ground. Lower all attachments to the ground. Stop the engine. Disconnect battery cables. Operate all hydraulic control levers and pedals repeatedly to release stored pilot pressure. Wait for the hydraulic system to fully depressurize.
Step 2: Old Valve Removal
Remove the cab floor mat and access panel to expose the foot pedal valve. Thoroughly clean the area around the valve. Label and disconnect all hydraulic lines from the valve, immediately capping or plugging all open line ends. Remove the mounting bolts securing the valve assembly to the cab floor. Carefully lift the old valve out.
Step 3: New Valve Preparation
Remove the protective port plugs from the new COGENG valve. Compare the new valve's port configuration, pedal type, and mounting bolt pattern to the old valve to confirm correct fitment.
Step 4: New Valve Installation
Position the new valve assembly onto the cab floor mounting location. Install and hand-tighten all mounting bolts. Torque mounting bolts to OEM specifications. Reconnect all hydraulic lines using new, lubricated O-rings. Torque all fittings to OEM specifications.
Step 5: System Verification and Functional Test
Reconnect batteries. Start the engine and allow it to idle. Check for hydraulic oil leakage at all connections. Operate the foot pedal through its full range and verify smooth, proportional response of the travel or auxiliary function. Verify that the pedal returns fully to the neutral position when released. Confirm no active diagnostic trouble codes before releasing the machine to service.
| Detail | Description |
|---|---|
| Shipping Methods | By Air: Cost-effective for medium-weight orders. By Sea: Most economical for bulk orders. By Express (FedEx, UPS, DHL, TNT): Fastest door-to-door service for machine-down emergencies. Method optimized based on cargo situation and destination. |
| Estimated Delivery Time | Express: 3-5 business days. Air Freight: 8-15 days. Sea Freight: 30-45 days. Transit times are carrier-dependent. Tracking provided within one business day of dispatch. |
| Packing | Inner: PP bag with anti-static protection. Outer: Heavy-duty export-grade corrugated carton box with custom-cut protective foam. |
| Payment Terms | Western Union, L/C, T/T, MoneyGram, D/A, D/P. Standard terms: 30% T/T deposit, 70% balance before shipment. |
| Minimum Order Quantity | Acceptable Trial Order — Single unit orders welcomed. |
| Policy Point | Terms |
|---|---|
| Merchant Return Policy | All sales are final. No returns or exchanges. A hydraulic valve cannot be restocked once departed from our controlled environment. |
| DOA Quality Guarantee | Full replacement for manufacturing defects reported within 7 days of delivery. Valve must be in original, uninstalled condition with protective port plugs in place. |
| Pre-Shipment Confirmation | We send high-resolution photos of your exact valve for written approval before dispatch. |
Q1: What are the symptoms of a failing foot pedal valve?
A: Common symptoms include: sluggish or delayed response when operating the travel or auxiliary function, the pedal failing to return fully to the neutral position when released, excessive free play in the pedal, machine creeping or drifting when the pedal is in neutral (indicating internal leakage), hydraulic oil leakage from the valve, and jerky or non-proportional control response.
Q2: Which part number do I need for my machine?
A: The correct part number depends on your machine model, serial number prefix, and whether the valve controls travel, auxiliary, or both functions. Provide your machine's complete PIN and our technical team will verify the correct part number for your specific application.
Q3: Do I need to bleed the hydraulic system after installation?
A: The pilot circuit is largely self-bleeding. After installation, start the engine and operate the foot pedal slowly through its full range several times to purge any air from the circuit. Check the hydraulic oil level and top up if necessary.
Q4: Can I replace just the pedal, or do I need the complete valve assembly?
A: The COGENG product is a complete valve assembly including the pedal. If only the pedal or a pedal component is damaged, individual parts may be available. Contact our sales team for specific component availability.
Q5: How do I know if my foot pedal valve is leaking internally?
A: Internal leakage is indicated by machine creep or drift when the foot pedal is in the neutral position and the engine is running. If the machine travels slowly without pedal input, or if the auxiliary function drifts under load, the valve likely has internal leakage and requires replacement.
For pricing, machine-down emergency support, trial orders, bulk quantity discounts, or pre-purchase compatibility verification, contact your COGENG supplier today.
Sales Price: Contact COGENG sales customer service directly for the most current competitive pricing. Trial orders welcome.
Shipping Method & Cost: We will quote the optimal shipping solution based on your location and urgency.
Estimated Delivery Time: Based on the selected carrier. Tracking provided within one business day of dispatch.
✅ Direct OEM Replacement — 100% Function Tested and Pressure Verified.
✅ Caterpillar Compatible — Validated for 301.7, 320GC, and 336G Excavators.
✅ Precision Manufacturing — Hardened Steel Spool, Bronze Bushings, Non-Slip Pedal.
✅ ISO 9001 Certified — 100% Bench Tested, 300 Pieces Monthly Supply.
✅ Trial Orders Welcome — Single Unit Orders Accepted.
✅ In Stock & Ready to Ship — Minimize Excavator Downtime with Immediate Worldwide Dispatch.
Critical Action: To ensure 100% compatibility, please provide your machine's complete PIN and serial number, and confirm whether the foot pedal valve controls travel, auxiliary, or both functions. Our technical team will cross-reference your machine's exact configuration and provide written confirmation before you order.
Merchant Return Policy: All products shipped are not returnable or exchangeable. Please complete all compatibility checks before purchase.
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