Need Custom-Built Parts? Growshine Delivers! (定制开发服务)

Beyond our standard inventory of Komatsu PC200-7 Stepping Throttle Motor and Caterpillar E320 Throttle Motor replacements, we specialize in custom development of various spare parts. If you have a unique specification for a throttle knob , electric motor , or any hydraulic component , our engineering team at Growshine International can manufacture high-quality, reliable alternatives to meet your exact requirements. We bridge the gap between design and delivery for your global sourcing needs.

Your Go-To Source for Premium Aftermarket Excavator Throttle Motors

Searching for high-quality, cost-effective replacement parts for your Komatsu , Caterpillar , or Hitachi equipment? Look no further. Growshine International is your trusted partner for premium aftermarket Construction Machinery Spare Parts and heavy truck brake pads . We offer a vast inventory of essential components, including the crucial Throttle Motor Assy , often referred to as the Excavator Part Throttle Knob Motor . Our focus on reliability ensures that machines like the PC200-7 , PC220-7 , PC300-6 , and PC200-8 maintain peak performance, even in demanding conditions. Our commitment is to provide China alternative parts export that match or exceed OEM specifications, making us a leading aftermarket sensors supplier for clients worldwide.

We understand the urgency of minimizing downtime. That's why we stock fast-moving items like the 6D102 Stepping Throttle Motor Assy for Komatsu excavators and various electric motor components for older models like the PC200-6 and EX200-5 . Explore our extensive catalog of aftermarket Komatsu parts , heavy duty clutch assemblies , and specialized excavator final drive components. We help you find the exact part you need for both modern and legacy fleets.

Detailed Product Listing: Throttle Motors and Knobs

The following table lists our core inventory of Excavator Throttle Motor and Throttle Knob assemblies. Each product is cross-referenced with its Chinese description and the critical part number (including both symbolized and non-symbolized versions for accurate searching). For immediate inquiry or pricing, click the contact link.

Expertise Across Machinery Sectors (格莳国际业务范围)

At Growshine International , our core business is the import and export of a comprehensive range of machinery parts. This includes specialized construction equipment hydraulic cylinders , rugged tractor transmission gears , precision turbocharger spare parts , and reliable auto engine control unit (ECU) replacements. We pride ourselves on being a premier China alternative parts export solution, serving both large-scale operations and individual contractors globally. We ensure all parts, from a simple fuel injector nozzles to a complex wiring harness assembly , meet rigorous quality standards.

You can find more detailed product information and contact us through our various corporate sites: ar-excel.com | ampleresiliencesoft.com | cgsc66.com | cgsc-equip.com | en.xinsheng2024.com | hi-part.cn

Component Glossary & Applications (配件名词解释与应用)

Understanding the function of your machinery parts is key to maintenance. Below are brief explanations of common components we supply, serving as your handy reference for parts like the Komatsu PC200-8 throttle knob and various loader bucket teeth .

• Throttle Motor (油门马达 / Мотор дросселя): An electric actuator that controls the engine speed (RPM) by adjusting the fuel pump governor or throttle valve. Application Example: Komatsu PC300-7 Throttle Motor.
• Final Drive (终传动 / Бортовой редуктор): The last stage of gearing that reduces speed and increases torque to the tracks or wheels. Application Example: Hitachi ZX330-3 Excavator Final Drive.
• Hydraulic Pump (液压泵 / Гидравлический насос): Converts mechanical power into hydraulic energy to operate actuators (cylinders/motors). Application Example: John Deere 9R Tractor Hydraulic Pump.
• Engine Control Unit (ECU) (发动机控制单元 / Блок управления двигателем): The brain of the engine, managing fuel mixture, ignition timing, and idle speed. Application Example: Volvo FM Truck ECU.
• Brake Pad (刹车片 / Тормозная колодка): The friction material used to slow or stop a wheel. Application Example: Freightliner Cascadia Heavy Truck Brake Pad.
• Water Pump Assembly (水泵总成 / Насос водяной в сборе): Circulates coolant through the engine block, radiator, and heater core. Application Example: Caterpillar 345D Water Pump Assembly.
• Steering Gear Box (转向器 / Рулевой редуктор): Converts the rotary motion of the steering wheel into the linear motion required to turn the wheels. Application Example: Ford F-150 Steering Gear Box.
• Track Link (履带节 / Звено гусеничное): Segments connected to form the continuous track of an excavator or bulldozer. Application Example: Caterpillar D8T Bulldozer Track Link.
• Turbocharger Spare Parts (涡轮增压器配件 / Запасные части турбокомпрессора): Components used to service the air compressor that forces more air into the engine. Application Example: Cummins ISX Turbocharger Spare Parts.
• Fuel Injector Nozzles (喷油嘴 / Форсунка топливной системы): Precisely spray fuel into the engine's combustion chamber. Application Example: Kubota V2403-M Fuel Injector Nozzles.

Expert Troubleshooting Guide: Komatsu PC200-7 Throttle Control

Symptom: Komatsu PC200-7 Engine Idles High or Low, Throttle Motor Non-Responsive

A faulty Komatsu PC200-7 Stepping Throttle Motor (Part No. 7834-41-2000) is a common cause for erratic engine speed. Here is a brief guide:

Problem Analysis: The stepping motor is controlled by the machine’s controller (ECU) and precisely adjusts the fuel rack position. Failure to respond usually indicates electrical issues or internal gear damage in the motor.

Step 1: Check Voltage (Electrical):
a. Locate the throttle motor connector.
b. With the key ON, measure the voltage supply to the motor. You should typically find a 24V supply (Komatsu PC200-7/PC300-7 runs on 24V system).
c. Check the signal wires. If the voltage is absent or fluctuates wildly, the problem may be the wiring harness assembly or the main controller (ECU), not the motor itself.

Step 2: Motor Resistance Test (Motor Integrity):
a. Turn the key OFF and disconnect the motor plug.
b. Measure the resistance between the motor's coil pins. A healthy stepping motor should show low, consistent resistance (e.g., 2-5 ohms) across the coil pairs.
c. A very high or infinite resistance indicates an open circuit (broken coil) inside the 7834-41-2000 Stepping Throttle Motor itself, requiring replacement with a reliable Growshine unit.

Step 3: Mechanical Check:
Ensure the throttle cable is not seized, bent, or obstructed. The motor must be able to move the cable freely. Sometimes, the issue is as simple as a rusted cable.