22B-43-13130 22B4313130 Motor Assy Excavator Electric Parts For KOMATSU PC128US PC138

• 22B-43-13130 22B4313130 Motor Assy Excavator Electric Parts For KOMATSU PC128US PC138

• Specification

• Function and Application

1. Cooling System Circulation
The primary function of this motor assembly is to drive the cooling fan or a coolant circulation pump within the equipment’s cooling system. It converts electrical energy (from the machine’s battery or alternator) into mechanical rotational force, which powers the fan or pump to circulate air or coolant through the radiator, oil cooler, or other heat-exchanging components. This circulation is critical for dissipating excess heat generated by the engine, hydraulic system, or transmission during operation.

2. Temperature Regulation
By controlling the speed and operation of the cooling fan or pump, the motor assembly helps maintain optimal operating temperatures for key systems. Many such motor assemblies are integrated with the equipment’s electronic control unit (ECU), which adjusts the motor’s output based on real-time temperature readings (e.g., from coolant or hydraulic oil sensors). This ensures efficient cooling—speeding up when temperatures rise (e.g., under heavy loads) and slowing down when cooling demands decrease, optimizing energy usage.

• Compatible models

• More motor parts fit for KOMATSU machinery

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .

• Product Warranty

1. Warranty Period: 3 Months' warranty from the date of arrival. Longer period of 6 months' warranty could be offered with higher price level.

2. Warranty type: replacement of the parts that have quality problem.

3. Warranty is not valid for below s

* Cutomer give wrong information about the order

* Force Majeure

* Wrong installation and operation

* Rust because of wrong stock & maintenance