Seeking a reliable, cost-effective replacement for your original equipment manufacturer (OEM) part? Our domestic high-quality alternatives offer the same performance and durability.
As a source manufacturer with strong R&D capabilities, Honour Time Machinery Limited specializes in the custom development and factory direct sales of precision engine parts for foreign trade export. We can support the customization of various engine cylinder liner kits to meet specific material and tolerance requirements, ensuring a perfect fit and optimum performance for even the most demanding applications.
The proportional solenoid valve, specifically Part No. 4579878 (also known as 4579878), is a critical component in the hydraulic control system of heavy construction equipment, such as the Caterpillar 320D Excavator. This valve modulates fluid flow to ensure precise and proportional movement of actuators, directly impacting machine efficiency and control. Replacing a faulty valve is crucial to prevent hydraulic system sluggishness and potential engine overload. We provide an exact-fit, high-performance unit designed for longevity.
Use for Excavator or Construction Machinery: Designed specifically for heavy-duty applications.
High Precision Ratio Control: Ensures smooth, precise, and proportional operation of hydraulic functions.
Direct Replacement for Part No. 4579878 / 4579878: Guarantees hassle-free installation and compatibility.
Optimized Flow Stability: Maintains consistent hydraulic pressure, improving overall machine response.
Durable Construction: Built with robust materials to withstand high temperatures and pressures in harsh environments.
| Detail | Value |
|---|---|
| Model NO. (Part Number) | 4579878 |
| Product Name | Proportional Solenoid Valve GP - Control |
| Application | CATERPILLAR 320D/323D Excavator Hydraulic System |
| Certification | ISO 9001:2015, CE |
| Condition | New, High-Quality Aftermarket Replacement |
| Transport Package | Carton (Secure and Protected) |
| Specification (Voltage/Type) | 24V DC Proportional Solenoid |
| Trademark | HTMachinery |
| Origin | China (Source Manufacturer) |
| Production Capacity | 5000 PCS/Year |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express (DHL, Fedex, EMS, UPS) or by Air/Sea Freight |
Honour Time Machinery Limited is your expert partner for comprehensive engine solutions. We specialize in supplying complete engine assemblies and top-tier spare parts for major brands including CUMMINS, Komatsu, Caterpillar, ISUZU, Kubota, Yanmar, and Weichai. Our core product range covers everything needed for a full engine overhaul or precise repair: Liner Kits, Pistons, Piston Rings, Crankshaft Bearings (Main and Connecting Rod), Thrust Washers, Overhaul Gasket Kits, Diesel Fuel Pumps, Fuel Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
We are focused on supporting your business with the best products, whether you need a CUMMINS engine B5.9-C rebuild kit price, a Komatsu 6D105 excavator piston ring replacement, or a complete Kubota V2203 engine overhaul kit supplier. Our inventory includes parts to resolve issues like engine oil pump pressure issues excavator 320D, providing an effective fix for excessive engine oil consumption in 6D108, and sourcing the best aftermarket engine liner kit manufacturers. Look to us for reliable crankshaft bearing suppliers China, affordable flameout solenoid valve 12V 24V, and high-quality parts like ISUZU 4HK1 cylinder head gasket torque specs, Caterpillar 3116 valve guide installation guide, and a wide array of heavy duty construction equipment solenoid valve parts. We also stock components for Yanmar 4TNV98 turbocharger repair kit, Weichai WP10 main bearing set for sale, and specialized parts for diesel fuel pump repair and maintenance tips, including engine gasket kit material NBR Viton PTFE and advice on turbocharger failure symptoms and replacement cost.
Liner Kit
Piston
Piston Ring
Gasket Kit
Gasket Head
Crankshaft
Valve Guide
Nozzle
Bearing (Engine Bearing, Main Bearing, Connecting Rod Bearing)
Pressure Switch
Flameout Solenoid
Monitor
Radiator
Main Valve
Belt
Cylinder Block
Valve Seat
Accelerator Motor
Transmitter
Fan Cooling
Other Engine Parts
| Brand | Models Supported |
|---|---|
| Komatsu | 3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170 |
| KOBELCO | J05E, 6D34T, 6D16, J08E, 6D22T, 6D24T, 6D16T, 6D34 |
| CATERPILLAR | 3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13 |
| Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
| ISUZU | 3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1 |
| Yanmar | 4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106 |
| HINO | J05E, J08E, V25C, EF750, P11C, V21C, H06CT, H07D |
| CUMMINS | QSB6.7, QSM11-C, B5.9-C, B3.9-C, QSM11, C8.3-C |
| VOLVO | D6D, D6E, D9E, D12D, D7D, D7E, D12E, D16D |
Piston Ring: Installed in the cylinder grooves of the Komatsu 6D102 Excavator PC200-7 Engine, it seals combustion gases and controls oil consumption.
Connecting Rod Bearing (Con Rod Bearing): Mounted on the crankshaft journal in the CUMMINS QSB6.7 Wheel Loader Engine, it enables smooth rotational movement.
Flameout Solenoid: Typically situated on the fuel pump assembly of an ISUZU 4BG1 Skid Steer Engine, it controls the fuel flow to shut off the engine.
Valve Guide: Pressed into the cylinder head casting of a Caterpillar 3116 Backhoe Engine, it guides the movement of the intake and exhaust valves.
Thrust Washer: Installed around the crankshaft ends in the Yanmar 4TNV98 Mini-Excavator Engine, it prevents excessive axial movement (front-to-back movement).
Injector Nozzle: The terminal part of the injector, sitting in the combustion chamber/cylinder head of a HINO J05E Generator Set Engine, responsible for atomizing fuel.
Turbocharger: Mounted on the exhaust manifold of a Weichai WP10 Heavy Truck Engine, it increases engine power by forcing more air into the cylinders.
Water Pump: Attached to the engine front/timing cover of a Kubota V2403 Compact Tractor Engine, it circulates coolant to prevent overheating.
Oil Pump: Located in the oil pan or engine block of an Caterpillar C7 Motor Grader Engine, it circulates lubrication throughout the engine.
Main Valve (Hydraulic): Often located within the main control valve block of a Komatsu PC400-8 Hydraulic Excavator, it directs high-pressure fluid to various actuators.
Common Fault: Excessive White Smoke from the Exhaust of a Komatsu PC200-8 Excavator with a 6D107 Engine.
Solution: White smoke often indicates unburnt fuel or coolant entering the combustion chamber. If coolant is the issue, check the cylinder head gasket integrity for leaks, especially between the coolant passage and cylinder bore. A detailed analysis involves a cooling system pressure test and an engine oil analysis for coolant contamination.
Proactive Maintenance Tip: Always inspect the Caterpillar C13 Engine Belt tension and condition during every 250-hour service interval. A worn or loose belt can lead to failure of the alternator or water pump, resulting in total machine shutdown or severe engine overheating. Regular replacement according to the manufacturer's schedule is far cheaper than emergency repairs.
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Honour Time Machinery Limited is a trusted global supplier specializing in engine assemblies and high-quality replacement parts for CUMMINS, Komatsu, Caterpillar, and other top construction machinery brands. We prioritize precision engineering and competitive export pricing.
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