Your Premier Source for Heavy-Duty Machinery Parts

As a leading supplier of high-quality aftermarket machinery parts from China, Growshine International specializes in providing reliable replacement components for a vast array of equipment. Our core business includes excavator components , heavy truck spare parts , agricultural machinery parts , and vehicle accessories . We ensure that your machinery runs efficiently and reliably, minimizing costly downtime.

We source and supply parts for major brands, offering you the best value for your investment. From a simple affordable Komatsu PC200-8 hydraulic pump to a complex reliable Caterpillar C15 turbocharger supplier, we have your needs covered. We are committed to being your most trusted partner for all your China replacement parts needs.

Check out our comprehensive range of Volvo excavator relays below, which are essential for managing critical electrical functions like starting and preheating.

Essential Technical Knowledge & Diagnostics

Part Nomenclature Explained:

1. Turbocharger (涡轮增压器, Турбокомпрессор): Installed in the exhaust system to increase engine power by forcing compressed air into the combustion chamber.
   Example: Caterpillar 345D Turbocharger (卡特彼勒 345D 的涡轮增压器, Турбокомпрессор для Caterpillar 345D)
2. Hydraulic Pump (液压泵, Гидравлический насос): Located in the main hydraulic system, converting mechanical energy into hydraulic energy (flow and pressure).
   Example: Komatsu PC200-8 Hydraulic Pump (小松PC200-8 液压泵, Гидравлический насос Komatsu PC200-8)
3. Solenoid Valve (电磁阀, Электромагнитный клапан): Found in hydraulic control circuits, used to control the flow of fluid or air based on electrical signals.
   Example: Volvo EC210 Solenoid Valve (沃尔沃EC210 电磁阀, Электромагнитный клапан Volvo EC210)
4. Fuel Injector (喷油器, Форсунка): Sits on the engine cylinder head, atomizing fuel into the combustion chamber.
   Example: Cummins QSB6.7 Fuel Injector (康明斯 QSB6.7 喷油器, Форсунка Cummins QSB6.7)
5. Alternator (发电机, Генератор): Mounted on the engine, generates electrical power to charge the battery and power the machine's electrical systems.
   Example: Hyundai R220LC-9 Alternator (现代 R220LC-9 发电机, Генератор Hyundai R220LC-9)
6. Relay (继电器, Реле): An electrical switch found in the fuse/relay box, used to control a high-power circuit with a low-power signal.
   Example: Volvo EC290B Preheat Relay (沃尔沃EC290B 预热继电器, Реле подогрева Volvo EC290B)
7. Sensor (传感器, Датчик): Located various places (engine, hydraulic lines, boom), measures a physical quantity (pressure, temperature) and converts it into an electrical signal.
   Example: Caterpillar 320D Pressure Sensor (卡特彼勒 320D 压力传感器, Датчик давления Caterpillar 320D)
8. Track Shoe (履带板, Башмак гусеницы): Part of the undercarriage, bolted to the track chain to provide traction.
   Example: Doosan DX300LC Track Shoe (斗山DX300LC 履带板, Башмак гусеницы Doosan DX300LC)
9. Seal Kit (油封修理包, Комплект уплотнений): Used inside hydraulic cylinders and pumps to prevent oil leakage.
   Example: Sany SY75 Hydraulic Cylinder Seal Kit (三一SY75 液压油缸修理包, Комплект уплотнений Sany SY75)
10. Control Valve (控制阀, Распределитель): Located in the main control block, directs hydraulic fluid flow to various actuators (cylinders, motors).
    Example: XCMG XE335C Control Valve (徐工 XE335C 控制阀, Распределитель XCMG XE335C)

Quick Tips for Operators:

• How to identify a failing hydraulic pump in a Komatsu excavator? Look for slow machine response, abnormal noises (whining/grinding), and excessively hot hydraulic oil.
• What is the typical lifespan for heavy-duty truck brake pads? It varies greatly, but for severe service, inspecting every 25,000 miles is recommended to ensure optimum performance heavy truck braking system parts.
• How to extend the service life of an engine air filter? Regularly clean the pre-cleaner (if applicable) and strictly adhere to the manufacturer's recommended replacement intervals, especially in dusty environments like mining or construction sites, to maintain high-quality Cummins engine filter replacement.

Detailed Troubleshooting: Komatsu PC200-7 Excavator Travel Weakness Diagnosis

Symptom: The Komatsu PC200-7 excavator experiences weak travel, especially uphill or when turning.

Solution Steps:

1. Check Pilot Pressure: Ensure the pilot control pressure (typically around 40 Bar) is correct. Low pilot pressure can prevent the main travel control valve spool from fully shifting. Replace a faulty Komatsu PC200-7 travel pilot valve solenoid if necessary.
2. Diagnose Swivel Joint: The swivel joint allows hydraulic fluid to pass from the upper body to the travel motors in the lower body. Leaking internal seals in the swivel joint are a common cause of travel weakness. Check for oil contamination in the travel motor gearbox oil.
3. Inspect Travel Motor Relief Valves: Each travel motor has two relief valves. If one fails (stuck open), hydraulic pressure will bypass, causing weakness on that side. Swap the relief valves between the left and right sides to confirm the faulty valve. Search for affordable Komatsu travel motor relief valve parts.
4. Main Pump Pressure Test: Finally, verify the maximum pressure output of the main hydraulic pump feeding the travel circuit (typically around 350 Bar). Low main pressure indicates a pump or main relief valve issue. Seek out reliable construction equipment pressure testing kits.

Partner with Growshine International

Growshine International (格莳国际) is dedicated to being your one-stop solution for high-value aftermarket replacement parts . We understand the importance of quality and speed in the heavy-duty machinery industry. We ship premium quality excavator hydraulic cylinder seals to Malaysia and durable mining truck suspension parts to Indonesia. Our business spans construction equipment , heavy-duty trucks , agricultural machinery , and vehicle electrical components .

Our commitment to quality means offering parts that meet or exceed OE specifications, whether you need a simple Volvo EC360B main control valve rebuild kit or a complex fast delivery of Cummins engine overhaul parts. Explore our full range of offerings:

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Contact us today for a quote on your Komatsu PC400-7 fuel pump replacement price, Caterpillar 330D final drive seal kit, or any other affordable Sany excavator parts China supplier.