Description
C0070 456-1837 Control Valve Assembly Overview
The C0070 456-1837 Control Valve assembly manufactured by Tatan is a 9-spool sectional multiple hydraulic distribution unit belonging to our Main Control Valve Assembly classification. Engineered specifically for Caterpillar CAT 306, 306E, and 306E2 6-ton compact excavators, replacing your worn valve with a Tatan complete assembly eliminates boom sinking, restores dozer blade holding stability, and cures internal pressure bypass across demanding utility trenching and civil construction applications.
Powered by the machine’s main hydraulic pump and matched with the Cat C2.4 diesel engine platform, this C0070 456-1837 Control Valve integrates micro-lapped alloy spools, load-check poppets, auxiliary thumb/breaker circuits, and a dedicated dozer blade section, ensuring 100% direct bolt-on installation with chassis hydraulic hard lines and pilot control hoses.
Key Attributes & Technical Parameters for C0070 456-1837 Control Valve
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KYB C0070 Series Sectional Multi-Spool Valve | Brand Name | Tatan |
| Compatible Equipment | Caterpillar CAT 306 | 306E | 306E2 | 305.5E2 | OEM Part Number | 456-1837 / 471-5697 / 455-7947 |
| Matched Engine Series | Cat C2.4 Direct Injection Diesel (36.5 – 38 kW) | Place of Origin | Guangdong, China |
| Max Relief Pressure | 24.5 MPa (245 bar / 3553 PSI) | Port Overload Pressure | 27.5 MPa (275 bar / 3988 PSI) |
| Pilot Control Pressure | 3.9 MPa (39 bar Standard Pilot Line) | Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance |
| Machinery Test Report | Provided (100% Bench Pressure Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Hydraulic Fluid Spec | ISO VG 46 Anti-Wear Hydraulic Oil | Packaging | Export Wooden Box Packaging |
Comprehensive Hydraulic Valve & Pump Support
Tatan maintains extensive stock of complete multi-spool control valves, main pumps, regulators, pilot gear pumps, and internal seal kits across global excavator lines:
Supported Excavator Machinery Brands & Global Coverage
In addition to Caterpillar compact excavators, Tatan manufactures and supplies replacement main control valves, hydraulic pumps, and final drives across major equipment brands:
Application Scenarios & Buyer Value
When contractors search to compare Caterpillar 306 control valve replacement cost and upgrade their machine with our C0070 456-1837 Control Valve, they secure measurable field reliability and lower cost per hour:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Caterpillar 306 Valve Replacement | 1:1 direct bolt-on installation eliminates cylinder settling and restores simultaneous boom, arm, and swing speeds. |
| Compact Machinery Repair Workshops | Avoids the labor of disassembling valve slices and resealing tie-rods; installs as a pre-tested complete unit. |
| Civil Trenching & Landscaping Fleets | Maintains stable 24.5 MPa working pressure during continuous auxiliary breaker hammering and auger drilling. |
| Equipment Parts Stockists | High-demand 6-ton valve assembly ready for immediate global air or ocean dispatch to minimize customer machine downtime. |
C0070 456-1837 Control Valve Diagnostic & Troubleshooting Guide
Use this technical guide to diagnose common hydraulic control valve issues on Caterpillar 306 series mini excavators:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom drops or drifts downward during neutral hold | Boom holding check valve poppet seat wear or port relief valve O-ring leakage allowing pressurized fluid to pass to tank. | Replace with Tatan complete C0070 456-1837 Control Valve assembly with factory pre-seated holding check poppets. |
| 2. Machine veers off course when traveling and blading together | Flow-splitter spool sticking or internal load check poppet seat wear causing unequal flow distribution to travel motors. | Inspect straight travel pilot pressure; install Tatan pre-calibrated replacement valve to restore balanced flow. |
| 3. Auxiliary attachment weak (breaker / auger stalls) | Auxiliary section port relief valve spring fatigue or foot-pedal pilot actuator shuttle spool contamination. | Clean pilot passages, verify 24.5 MPa relief setting, or bolt on brand-new complete control valve assembly. |
| 4. External fluid seepage between valve sections | Tie-rod bolt elongation or inter-section fluororubber O-rings degraded from continuous oil temperatures over 80°C. | Install new Tatan sectional valve pre-torqued with industrial O-rings and calibrated tie-rod fasteners. |
Transport Packaging & Certified Quality Assurance
Every Tatan control valve undergoes anti-rust oiling, port capping, plastic sealing, and solid export wooden box packaging before international shipment:
✈️ Express Air Courier
Partnered with DHL, FedEx, and UPS for 3-7 day priority delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL container ocean freight for bulk equipment parts replenishment.
📦 Export Wooden Crates
Solid fumigated timber cases lined with thick shockproof foam to prevent transit damage.
C0070 456-1837 Control Valve FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
Reviews
There are no reviews yet.