Guangzhou Kawo Construction Machinery Co.,Ltd.
| Product Name | Hydraulic Pump Assembly |
| MOQ | 1 Set |
| Delivery Time | 3-8 days |
| Packaging Details | Wooden Case / Cartonwith Foam Protection, or as Required |
| Applicable Model | PC50 PC55 PC56-7 |
| Payment Terms | Western Union, T/T, Assurance |
| Transportation Method | DHL, UPS, FedEx, Sea Freight |
| Part No | 708-3S-00961 708-3S-01850 |
| Supply Ability | 300pcs/day |
| Condition | New / Rebuilt |
| Warranty | 6 Months |
| Brand Name | CAVOYD |
| Model Number | PC50 PC55 PC56-7 |
| Place of Origin | China |
View Detail Information
Explore similar products
Komatsu PC300-8MO 350-8MO Excavator Spare Parts 708-2G-00180 708-2G-01181 708-2G
Hydraulic Main Piston Pump 708-2G-00024 708-2G-00022 708-2G-00023 For Komatsu
Hydraulic Main Piston Pump 708-2H-00026 708-2H-00022 708-2H-00450 For Komatsu
Komatsu PC400-6 PC450-6 PC300-6 PC350-6 Excavator Hydraulic Pump 708-2G-00191
Product Specification
| Product Name | Hydraulic Pump Assembly | MOQ | 1 Set |
| Delivery Time | 3-8 days | Packaging Details | Wooden Case / Cartonwith Foam Protection, or as Required |
| Applicable Model | PC50 PC55 PC56-7 | Payment Terms | Western Union, T/T, Assurance |
| Transportation Method | DHL, UPS, FedEx, Sea Freight | Part No | 708-3S-00961 708-3S-01850 |
| Supply Ability | 300pcs/day | Condition | New / Rebuilt |
| Warranty | 6 Months | Brand Name | CAVOYD |
| Model Number | PC50 PC55 PC56-7 | Place of Origin | China |
| High Light | Komatsu PC50 Main Piston Pump ，Komatsu PC50 Excavator Hydraulic Pump ，708-3S-01850 | ||
The main pump for Komatsu PC56-7, part No. 708-3S-00961, is a variable displacement piston pump integrated with a tandem pilot gear pump, equipped with PC-EPC electronic flow control solenoid valve. Primary failure causes include contaminated hydraulic fluid, suction-side air ingress, defective PC-EPC solenoid valve, and seized regulator spool.
Normal operation at no-load; pressure drops rapidly under loaded conditions, and movements become slower when hot.
Internal leakage induced by worn valve plates and piston shoes; faulty PC-EPC solenoid valve; seized regulator spool and fatigued springs.
Blocked suction filter, air leakage on suction pipeline, metallic particulates in hydraulic fluid.
Excessive pump case drain flow indicates internal pump wear.
Malfunctioning PC-EPC solenoid valve or seized power control spool. The pump remains at large displacement, and power consumption exceeds the engine rated output.
Cut off power supply to PC-EPC solenoid. If lugging disappears, the fault lies in solenoid or wiring circuit.
Fluid temperature rises rapidly after continuous operation, and actuator movement slows down gradually.
Severe internal pump leakage; blocked case drain circuit leading to elevated case pressure.
Degraded seal; high case pressure; seal lip scratched by misaligned coupling.
A damaged seal draws in air, inducing cavitation and accelerating pump deterioration.
Air trapped in hydraulic circuit; unstable regulator response; localized scoring on valve plate.
Unstable pilot pressure, abnormal main pump displacement modulation and weak joystick control.
Worn pilot gear, seal leakage and internal fluid bypass.
Company Details
Business Type:
Trading Company,Manufacturer
Year Established:
2017
Total Annual:
$1 Million -US$5 Million
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Guangzhou Kawo Construction Machinery Co., Ltd. Company Profile Professional Excavator Hydraulic Products Manufacturer & Service Provider Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ... Guangzhou Kawo Construction Machinery Co., Ltd. Company Profile Professional Excavator Hydraulic Products Manufacturer & Service Provider Founded in 2017, Guangzhou Kawo Construction Machinery Co., Ltd. is a professional manufacturer and service provider specializing in excavator hydraulic produ...
Get in touch with us
Leave a Message, we will call you back quickly!