Your Trusted Global Source for Excavator Hydraulic and Engine Components
Honour Time Machinery Limited is a premier manufacturer and exporter specializing in high-precision engine assemblies and components. We provide cost-effective solutions for the world's leading brands, ensuring your equipment operates with maximum efficiency.
Chat via WhatsApp: +8613532379052 Email Us: [email protected]We solve common machinery failures such as hydraulic pressure drops, engine overheating, and abnormal oil consumption in models like Komatsu PC200-7, Caterpillar 320C, and Isuzu 6HK1.
Our Komatsu unloader valves are engineered to meet or exceed OEM specifications, providing a perfect fit for hydraulic systems. These components are essential for maintaining the correct relief pressure in your excavator's main valve assembly.
| Item No. | Product Name | Part Number (Standard) | Part Number (Clean Code) | Application Model |
|---|---|---|---|---|
| 1 | Komatsu Unloader Valve | 723-46-20502 | 7234620502 | PC200-6, PC220-7, PC240 |
| 2 | Komatsu Unloader Valve | 723-46-20500 | 7234620500 | PC200-5, PC120-6 |
| 3 | Komatsu Unloader Valve | 723-46-20501 | 7234620501 | PC300-7, PC400-7 |
| 4 | Komatsu Main Relief Valve | 723-40-56800 | 7234056800 | PC200-8, PC210-8 |
| 5 | Komatsu Float Switch | 7861-92-4800 | 7861924800 | PC200-7, PC300-8 |
Our core business involves high-performance engine parts for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. We supply full engine assemblies and critical internal components.
| Category | Products Provided |
|---|---|
| Cylinder Components | Cylinder Block, Cylinder Head, Cylinder Liner Kit, Piston, Piston Ring, Liner Kit |
| Internal Moving Parts | Crankshaft, Connecting Rod, Crankshaft Bearing, Main Bearing, Thrust Washer |
| Fuel & Turbo Systems | Fuel Injection Pump, Injector Nozzle, Turbocharger, Flameout Solenoid |
| Cooling & Lubrication | Water Pump, Oil Pump, Radiator, Fan Cooling, Belt, Oil Seal |
| Electrical & Control | Monitor, Pressure Switch, Accelerator Motor, Transmitter, Sensor |
| Brand | Compatible Engine Models |
|---|---|
| Komatsu | 3D82, 3D84, 4D105, 6D95, 6D108, 6D110, 4D84, 4D95, 6D102, 6D105, 6D114, 6D170 |
| Caterpillar | 3114, 3116, C4, C6, 3064T, S6K, C7, C-9, C13 |
| Isuzu | 3LD1, 4LE1, 4BG1, 4HK1, 6SD1, 6WG1, 4LE2, 4JB1, 6BG1, 6HK1, 6WF1 |
| Mitsubishi | 4D34, 4D24, K4M, S3Q2, 6D16, 6D24, S4KT, 6D40 |
| Yanmar | 4D88E, 4TNE84, 4TNV88, 4TNV94L, 4TNE88, 4TNE94, 4TNV98, 4TNV106 |
| Hino / Cummins | J05E, J08E, P11C, QSB6.7, QSM11-C, B5.9-C, B3.9-C |
Turbocharger: Installed on the engine exhaust manifold. Example: Cummins QSB6.7 Turbocharger for increased power in loaders.
Main Relief Valve: Located in the main control valve bank. Example: Komatsu PC200-8 Main Valve for hydraulic pressure control.
Piston Ring: Installed in the piston grooves inside the cylinder. Example: Caterpillar C7 Piston Ring for compression sealing.
Water Pump: Mounted on the front of the engine block. Example: Isuzu 6HK1 Water Pump for coolant circulation.
Fuel Injector: Located in the cylinder head. Example: Yanmar 4TNV98 Injector for precise fuel delivery.
Oil Pump: Located inside the engine crankcase. Example: Kubota V2403 Oil Pump for lubrication.
Gasket Head: Placed between the cylinder head and block. Example: Weichai WP10 Head Gasket to prevent leaks.
Connecting Rod: Connects the piston to the crankshaft. Example: Komatsu 6D102 Connecting Rod for motion transfer.
Radiator: Mounted at the front of the machine. Example: Caterpillar 320D Radiator for heat dissipation.
Solenoid Valve: Part of the fuel or hydraulic system. Example: Isuzu 4HK1 Flameout Solenoid for engine shutdown.
Machine Issue: Slow hydraulic movements and loss of power in Komatsu PC220-7.
Solution: Inspect the Unloader Valve (723-46-20502). Debris in the valve seat often prevents the system from reaching full pressure. Clean the valve components or replace with our high-quality alternative to restore hydraulic response.
Maintenance Tip: For Caterpillar 320D engines, always replace the Engine Bearing and Gasket Kit every 10,000 hours to prevent catastrophic crankshaft failure.
| Model NO. | 723-46-20502 / 7234620502 | Application | Excavator / Construction Machinery |
| Certification | ISO9001 / CE | Condition | 100% Brand New Replacement |
| Transport Package | Neutral Carton or Custom Box | Origin | Guangdong, China |
| Production Capacity | 5000 PCS/Year | Payment | T/T, Western Union, MoneyGram |
Delivery Methods: Express (DHL, Fedex, EMS, UPS), Air Freight, or Sea Cargo.
Click the button below to visit our Facebook profile and stay updated with the latest news and updates!
Visit Facebook Profile
English
English