708-2G-00700 Main Hydraulic Pump for Komatsu PC300 / PC350 Excavators

708-2G-00700 identifies the main hydraulic pump used as an application reference for Komatsu crawler excavators. Driven from the engine, the pump supplies hydraulic flow for implement, swing and travel functions. Pump configurations may differ in shaft, mounting flange, port layout, regulator and attached sections even when the housings appear similar. VTS reviews the machine ID, old-pump nameplate and interface photos before defining the quotation.

● Replacement or planned overhaul of the main hydraulic pump after related system faults have been separated

● Slow hydraulic response after suction, pilot pressure, relief and downstream leakage conditions have been checked

● Quotations that must state whether the regulator or attached pump sections are included

708-2G-00700 is the reference part number used to identify and review this product. Komatsu identifies the equipment application and does not automatically define the brand of every quoted unit. The formal quotation states the supplied brand, condition, assembly scope and included or excluded components.

The application references for this page are the Komatsu PC300 and PC350 crawler excavators. Final fitment must be checked against the complete machine identification, old-unit identification and relevant interfaces. Do not order by appearance or reference part number alone.

● Complete machine serial number and ID plate

● Original pump nameplate and visible markings

● Drive shaft or coupling profile

● Mounting flange and bolt-hole pattern

● Suction, delivery, drain and pilot-port layout

● Regulator, control and attached pump-section configuration

Main pumps may differ in shaft or spline profile, flange depth, port direction, regulator configuration and attached pump sections. These interfaces must match the removed unit. Before replacement, also review suction restriction, air ingress, pilot pressure, oil contamination, relief control and internal leakage in the main valve or actuators; installation should follow the machine service procedure and avoid dry start.

Verified genuine option when available, branded or aftermarket replacement, remanufactured or used. Confirmed for each enquiry. The quotation will define the actual supplied brand, condition and assembly scope for this product.

● Actual supplied brand and product condition

● Exact assembly scope and included or excluded components

● Order quantity, applicable warranty terms and lead time

● Packing, Incoterms and payment terms

For quotation, send the PC300 machine identification, old-unit identification and the clearest interface photos.

● Match the shaft, flange, ports, regulator and attached sections.

● Confirm bare-pump, regulator-inclusive or wider assembly scope.

● Check suction, pilot, relief and downstream leakage conditions.

● Clean affected circuits, renew applicable filters and prefill as required by the service procedure.

Open hydraulic ports, the drive shaft, mounting flange, regulator and external controls will be protected against impact and contamination. The heavy pump will be supported and secured, with moisture protection suited to the chosen shipping method.

The shipping method, freight and estimated transit time will be confirmed according to the quantity, packed dimensions, weight and destination.

Warranty terms depend on the selected supply option and will be stated in the formal quotation. Actual pre-shipment photos can be provided.

Based in Xuzhou, China, VTS focuses on construction machinery parts supply and fitment support for international buyers.

● Fitment support focuses on the machine serial number, shaft, flange, ports, regulator and attached pump sections.

● The quotation distinguishes the supplied brand, condition, included components and assembly scope.

● Confirmed related excavator parts can be consolidated, with international shipping coordinated for the actual order.

How is 708-2G-00700 fitment confirmed?

Send the complete machine serial number, old pump nameplate and shaft, flange, port and regulator photos.

Does the quotation include the regulator?

Only when the quotation states that the regulator or other control parts are included.

Can a similar-looking main pump be used?

Not without reviewing the shaft, flange, ports, regulator and attached pump sections.

Does slow hydraulic operation prove pump failure?

No. Suction, pilot, relief, valve and actuator leakage can create similar symptoms.

What should be checked before installation?

Follow the service procedure, clean affected circuits, renew applicable filters and avoid dry start.

Can the main hydraulic pump ship with other excavator parts?

Yes, where practical, with the pump sealed, supported and protected separately.

For quotation, send the PC300 machine identification, old-unit identification and the clearest interface photos.