Precision Engineered 31M9-13100 Replacement - High-Quality Chinese Alternative Solves Hydraulic Pressure Faults
Source Factory - Direct Export - OEM & ODM Development Supported
At Honour Time Machinery Limited, we specialize in the development and manufacturing of high-durability engine liners for heavy machinery. Whether you need standard dimensions or custom specifications for specialized engine rebuilds, our factory provides precision-fit solutions that ensure optimal heat dissipation and wear resistance.
To ensure 100% compatibility, we provide both standard and simplified part numbers for easy database searching.
| No. | Brand | Machine Model | Primary Part Number | Secondary Part Number | Product Name |
|---|---|---|---|---|---|
| 1 | Hyundai | R55 / R55-7 | 31M9-13100 | 31M913100 | Main Relief Valve |
| 2 | Komatsu | PC56 / PC60 | 7861-92-4800 | 7861924800 | Float Switch / Level Sensor |
Optimized for Excavators: Specifically designed for Hyundai R55 and Komatsu series to restore hydraulic and electrical system stability.
OEM Performance Standards: Manufactured to meet or exceed original specifications for pressure relief and fluid monitoring.
Enhanced Durability: Built with high-grade steel and corrosion-resistant components for harsh construction environments.
Plug-and-Play Installation: Precision matching of threads and electrical connectors ensures no-hassle replacement.
Cost-Effective Solution: Our high-quality Chinese alternatives offer premium reliability at a fraction of the original cost.
Honour Time Machinery Limited is your one-stop shop for Cummins engine assembly, Komatsu hydraulic parts, and Caterpillar repair kits. We supply Isuzu 4HK1 overhaul gaskets, Yanmar 4TNV94 pistons, and Kubota V2403 crankshafts.
| Category | Available Components |
|---|---|
| Engine Core | Cylinder Block, Cylinder Head, Crankshaft, Camshaft, Connecting Rod |
| Repair Kits | Full Gasket Kit, Head Gasket, Liner Kit, Piston Ring Set, Bearing Bushing |
| Fuel System | Injection Pump, Fuel Injectors, Nozzles, Transfer Pump |
| Cooling & Lubrication | Radiator, Oil Pump, Water Pump, Fan Cooling, Oil Cooler |
| Electrical & Control | Accelerator Motor, Monitor, Pressure Switch, Flameout Solenoid, Transmitter |
| Hydraulics | Main Relief Valve, Pilot Valve, Hydraulic Pump Parts, Seal Kits |
We provide parts for the following engine models across major international brands:
| Brand | Supported Engine Models | |||
|---|---|---|---|---|
| Komatsu | 3D82 / 3D84 | 4D105 / 6D95 | 6D108 / 6D110 | 4D84 / 4D95 / 6D102 |
| Kobelco/Mitsubishi | J05E / J08E | 6D34T / 6D16 | 4D34 / S4KT | 6D22T / 6D24T |
| Caterpillar | 3114 / 3116 | C4 / C6 | 3064T / S6K | C7 / C9 / C13 |
| Isuzu | 3LD1 / 4LE1 | 4BG1 / 4HK1 | 6SD1 / 6WG1 | 4JB1 / 6BG1 / 6HK1 |
| Yanmar/Hino | 4D88E / 4TNV88 | 4TNV94L / 4TNV98 | J05E / J08E | P11C / H07D |
Equipment: Hyundai R55 Excavator
Issue: Weak hydraulic movement and slow boom lifting response.
Diagnosis: The Main Relief Valve (31M9-13100) was found to have internal spring fatigue, causing pressure leakage below the rated 210 bar.
Solution: Replaced with our high-quality 31M913100 relief valve. System pressure restored to factory standards, resolving the power loss.
Caterpillar 320D Turbocharger: Installed on the engine exhaust manifold to increase air intake. Example: CAT C6.4 engine.
Komatsu PC200-8 Injector: Delivers high-pressure fuel into the combustion chamber. Installed in the cylinder head.
Cummins QSB6.7 Water Pump: Circulates coolant throughout the block to prevent overheating.
Isuzu 4HK1 Oil Pump: Located in the oil pan/sump area, it provides lubrication to the crankshaft and bearings.
Yanmar 4TNV98 Alternator: Mounted on the front of the engine, it charges the battery and powers the electrical system.
Kubota V2203 Glow Plug: Pre-heats the combustion chamber for easier cold starts.
Weichai WD615 Fuel Filter: Removes impurities from diesel to protect the injection system.
Caterpillar C9 Thermostat: Regulates engine temperature by controlling coolant flow to the radiator.
Komatsu D65 Dozer Starter Motor: Engages the flywheel to initiate engine rotation.
Isuzu 6WG1 Valve Guide: Precise tubes in the cylinder head that ensure valve stems move linearly without gas leakage.
| Application | Excavator / Construction Machinery / Industrial Engine |
| Certification | ISO9001 / CE Compliance |
| Condition | 100% Brand New High Performance Replacement |
| Transport Package | Heavy Duty Carton / Neutral Packing / Wooden Case |
| Origin | China (Source Factory) |
| Production Capacity | 5,000 PCS / Year |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | DHL, Fedex, EMS, UPS, Air Cargo, Sea Freight |
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