Description
KSV160 708-2L-00040 Main Control Valve Assembly Overview
The KSV160 708-2L-00040 Main Control Valve assembly (OEM Part Numbers: 708-2L-00040, 708-2L-00041, 708-2L-00140, KSV160-8) manufactured by Tatan is a precision monoblock hydraulic distribution valve belonging to our Main Control Valve Assembly classification. Engineered specifically for Komatsu PC70-8, PC70-8E, PC78US-8, and PC88MR-8 7.0-to-8.5 ton midi excavators, replacing your worn control valve with a Tatan complete assembly eliminates hydraulic lag, attachment drifting, and internal pressure bypass instantly.
Built strictly according to original OEM specifications, this Kayaba KSV160-8 hydraulic distribution valve incorporates micro-lapped alloy steel spools and pre-calibrated main/overload relief valves, ensuring 100% direct bolt-on installation with hydraulic pump main lines, pilot hoses, and auxiliary attachment circuits.
Key Attributes & Parameters for KSV160 708-2L-00040 Main Control Valve
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | Kayaba KSV160-8 Control Valve Series | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC70-8 | PC78US-8 Excavator | OEM Part Number | 708-2L-00040 / KSV160 |
| Matched Engine Series | Komatsu SAA4D95LE-5 / Yanmar 4TNV98-E | Place of Origin | Guangdong, China |
| Max Main Relief Pressure | 26.5 MPa (265 bar / 3840 PSI) | Overload Relief Pressure | 28.4 MPa (284 bar / 4120 PSI) |
| Max System Flow Rate | 130 – 145 L/min Hydraulic Flow | Pilot Pressure Range | 3.5 – 3.9 MPa (35 – 39 bar) |
| Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance | Quality Status | 100% Brand New Monoblock Assembly |
| Machinery Test Report | Provided (100% Bench Tested) | Video Outgoing-Inspection | Provided Before Shipping |
Supported Machinery Brands & Main Valve Parts Coverage
In addition to Komatsu, Tatan manufactures replacement main control valves and hydraulic distribution components for major excavator brands:
Application Scenarios & Buyer Value
When upgrading or replacing your 7-ton excavator hydraulic distribution system with our KSV160 708-2L-00040 Main Control Valve, buyers achieve maximum operational uptime and precise flow distribution:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC70-8 Main Valve Replacement | 1:1 direct bolt-on replacement eliminates hydraulic cylinder drift and restores smooth compound digging movements. |
| Hydraulic Repair Workshops | Replaces complex internal spool honing; reduces labor hours and eliminates pressure bypass warranty callbacks. |
| Parts Dealers & Stockists | High-demand 7-ton excavator control valve ready for fast local sale to construction contractors and plant hire fleets. |
| Rental Fleet Maintenance | Extends excavator working hours and ensures smooth multi-function bucket and arm digging operations. |
Use this OEM manual hydraulic diagnostic guide to troubleshoot control valve symptoms on your Komatsu PC70-8 excavator:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom / Arm cylinder drifting downward during neutral position holding | Internal spool surface wear or overload relief valve poppet seat erosion causing high-pressure oil leakage to hydraulic tank. | Replace with Tatan 708-2L-00040 complete main control valve assembly or inspect main relief poppet seals. |
| 2. Slow hydraulic cylinder response & weak digging force | Main safety relief valve setting pressure drop (<26.5 MPa) or pilot spool sticking due to contaminated oil varnish. | Flush hydraulic oil lines, calibrate main relief valve pressure to 26.5 MPa, or install a new complete control valve. |
| 3. Extreme hydraulic oil overheating under compound digging operations | Internal oil bypass between spool galleries caused by housing bore scoring or damaged center section sealing O-rings. | Install Tatan new KSV160-8 main control valve assembly; flush hydraulic system and install 10μm oil return filter. |
| 4. Hydraulic oil leaking from pilot cap cover | Pilot pressure cap O-ring degradation or pilot spool return spring fatigue under continuous operation. | Replace pilot end cap seals or swap to Tatan factory pre-tested complete main control valve assembly. |
To ensure maximum service life and prevent instant contamination wear upon installing your new KSV160 708-2L-00040 Main Control Valve, follow these OEM installation procedures:
- System Flushing: Thoroughly drain and flush the hydraulic tank and cooler lines to eliminate metal shavings from old component failure.
- Filter Replacement: Replace the hydraulic return filter and pilot oil filter with fresh 10-micron rated filter elements before startup.
- Pilot Pressure Bleeding: Bleed trapped air from the pilot end cap ports before engaging full hydraulic pump load.
- Fluid Specification: Refill hydraulic oil tank with clean ISO VG 46 or VG 68 anti-wear hydraulic oil only.
To ensure 100% damage-free international transport, every Tatan KSV160 708-2L-00040 main control valve undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy hydraulic main control valves and bulk orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with thick shockproof foam lining for maximum safety.
Tatan hydraulic main control valves are manufactured under ISO 9001 quality management systems and strictly comply with CE safety standards.
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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