Description
KMX32N 236-6424 Main Control Valve Assembly Overview
The KMX32N 236-6424 Main Control Valve Assembly manufactured by Tatan is a heavy-capacity multi-spool hydraulic directional control block belonging to our Main Control Valve Assembly classification. Engineered specifically for Caterpillar 330C, 330C L, and 330C LN 30-to-35 ton excavators, replacing your worn valve bank with this complete KMX32N 236-6424 Main Control Valve Assembly unit eliminates hydraulic cylinder drifting, compound motion hesitation, and high-pressure fluid overheating.
Constructed from high-density alloy nodular cast iron, this assembly houses precision-machined spools with tight 0.006 mm clearances to prevent internal oil bypass. Pre-installed with pilot-operated pressure relief valves, stick regeneration valves, and boom holding blocks, it ensures smooth flow division between dual main hydraulic pumps and high-tonnage digging cylinders.
Key Attributes & Parameters for KMX32N 236-6424 Main Control Valve Assembly
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KMX32N / KMX32 Directional Control Block | Brand Name | Tatan |
| Compatible Equipment | Caterpillar 330C | 330C L Excavator | OEM Part Number | 236-6424 / 258-0288 / 258-0291 |
| Main Relief Pressure | 34.3 MPa (343 Bar / 4975 PSI) | Heavy Lift Boost Pressure | 36.8 MPa (368 Bar / 5337 PSI) |
| Spool Bore Clearance | 0.005 – 0.008 mm Micro-Tolerance Ground | Integrated Circuit Logic | Boom Holding & Stick Regeneration |
| Machinery Test Report | Provided (100% Bench Pressure Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Valve Block Material | High-Strength Nodular Cast Iron (QT600) | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Control Valve Unit | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Hydraulic Valve Coverage
In addition to Caterpillar, Tatan manufactures replacement complete main control valves, hydraulic manifolds, and valve cartridges for leading machinery brands:
Application Scenarios & Buyer Value
When resolving hydraulic control and distribution failures with our KMX32N 236-6424 Main Control Valve Assembly, workshops and equipment owners gain immediate benefits:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| CAT 330C Valve Bank Replacement | Swapping to a complete KMX32N 236-6424 Main Control Valve Assembly eliminates repetitive downtime caused by internal spool leakage and micro-cracks in aging blocks. |
| Hydraulic Component Rebuild Centers | Avoids the high cost and unreliability of hand-lapping and oversize spool fitting on severely scored cast iron bores. |
| Heavy Quarry & Mining Contractors | Restores balanced flow division during compound operations, enabling simultaneous boom lift, swing, and arm crowd without hydraulic stalls. |
| International Machinery Stockists | Ready-to-ship replacement valve inventory for global fleets operating high-hour Caterpillar 330C machines. |
KMX32N 236-6424 Main Control Valve OEM Diagnostic Guide
Use this technical diagnostic guide to identify hydraulic valve faults on your Caterpillar 330C excavator:
| Hydraulic Circuit Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom drops or arm retracts automatically under load | Damaged boom drift reduction poppet valve seat or excessive spool-to-bore clearance (>0.015 mm), bleeding high-pressure oil back to tank. | Replace with a factory-tested complete KMX32N 236-6424 Main Control Valve Assembly. |
| 2. Stick crowding speed is slow while pump pressure is normal | Stick regeneration circuit check valve jammed by fluid debris or worn pilot pressure relief cartridge failing to open fully. | Inspect stick pilot line pressure (3.9 MPa), flush circuits, or swap to a pre-calibrated complete valve bank. |
| 3. Machine pulls to one side during simultaneous travel and digging | Straight travel spool sticking in neutral or contaminated load-check poppet failing to equalize dual pump outputs. | Flush hydraulic reservoir, replace return line filters, and install a brand-new calibrated Tatan valve unit. |
| 4. Hydraulic oil temperature spikes rapidly (>85°C) under light digging | Main relief valve poppet eroded or port relief spring fatigue causing continuous high-pressure throttling and oil friction. | Check relief pressure settings (34.3 MPa main, 36.8 MPa boost) and install a brand-new complete valve block. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan main control valve assembly is pre-flushed with preservation fluid, capped with steel threaded plugs, sealed in moisture-proof barrier film, and bolted inside an export-grade wooden crate.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for 3-7 day express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy hydraulic assemblies and bulk stock orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with custom high-density foam inserts to prevent shipping shock.
Quality Control & International Certificates
Tatan hydraulic components are manufactured under ISO 9001 certified quality control systems and strictly comply with international industrial pressure vessel safety standards.
KMX32N 236-6424 Main Control Valve FAQ & Related Categories
🔗 Frequently Purchased Together with CAT 330C Main Control Valve:
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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