A4VSO71DR/10R-PPB13N00 Hydraulic Piston Pump 71cc 350 Bar Modified DR Valve Bidirectional Adjustable for Excavator

A4VSO71DR/10R-PPB13N00 Hydraulic Piston Pump with Modified Bidirectional DR Valve

This A4VSO71DR/10R-PPB13N00 is a swashplate type axial piston variable displacement pump with a modified DR pressure control valve that can be adjusted in both directions. Compared with the standard DR control, the modified valve gives a wider usable pressure tuning range, which is useful when the same pump has to serve machines running at different working pressures, or when the relief setting has to be corrected on site without changing the control block.

Product Specifications

Why the Modified Bidirectional Valve Matters

• Wider tuning range: the pressure setting can be adjusted in both directions instead of one, so one pump model covers more machine variants and reduces your stock keeping units.
• On site correction: if the machine works at a pressure different from the original specification, the setting can be brought in range without swapping the control block.
• Stable cut off: the modified control keeps the cut off point repeatable after adjustment, so flow drops cleanly at the set pressure instead of drifting.
• Swashplate axial piston design: high volumetric efficiency at 350 bar nominal, suitable for continuous main pump duty.
• Bench tested: every unit is run on a test bench for pressure holding, control response and external leakage before packing.

Application and Fitment

Used as a main pump or as a stand alone variable pump on excavators and other construction machinery with a 71 cc open circuit requirement. Fitment depends on shaft type, mounting flange, port configuration and rotation - the code after the slash defines these options. Send us the nameplate photo of your old pump, including the full type code and the machine model, and our engineers will confirm whether PPB13N00 is the correct option for your unit within 24 hours.

Packing and Delivery

Each pump is protected with anti-rust oil, sealed in a moisture barrier bag with shock absorbing foam, then packed in an export grade carton or plywood case. Ports and shaft are capped to keep contamination out during transport. Stock items ship in 3 to 7 working days; production orders ship in 15 to 30 days after confirmation. Export documents available on request: commercial invoice, packing list, certificate of origin.

Company Profile

Guangzhou Xingfan Precision Hydraulic Co., Ltd. supplies aftermarket hydraulic components for construction machinery, covering hydraulic pumps, travel motors, final drives, swing motors, control valves, gear pumps, gearboxes, relief valves and solenoid valves. Established in 2022, with 80% to 90% of output exported to distributors and repair workshops worldwide.

FAQ (by market)

Q1: Is this an original pump or an aftermarket replacement?
A: It is an aftermarket replacement built to the original specification. The type code A4VSO71DR/10R-PPB13N00 is referenced only to describe compatibility and configuration.

Q2: What does the modified bidirectional valve change for me?
A: The standard DR control adjusts pressure in one direction only. The modified valve allows adjustment in both directions, so you can set a higher or lower working pressure on the same pump and cover more machine models with one part number.

Q3: How do I confirm the type code is correct for my machine?
A: Send the full nameplate photo of the old pump (all characters after the slash matter) plus your machine model. We confirm the shaft, flange, port and rotation match within 24 hours, and we will tell you honestly if the option code is wrong.

Q4: What is the MOQ and lead time?
A: 1 unit for stock items, quantity discounts apply on full cartons. Stock ships in 3 to 7 working days, production in 15 to 30 days after confirmation.

Q5: Can I buy one sample before a bulk order?
A: Yes. A sample order is welcome so your workshop can check the control response, mounting fit and pressure cut off before committing to a container.

Q6: What about pricing, payment terms and warranty?
A: Payment terms are L/C, D/A, D/P, T/T and Western Union. Pricing, warranty terms and volume discounts are quoted privately per order - contact our sales team with your target quantity and destination port.

Q7: For buyers in North America and Europe - do you supply test reports or certification?
A: We do not currently hold third party product certification for this pump. We can provide an internal inspection report with key dimensions and the bench test record for pressure holding and control response. If your company requires SGS, BV or TUV inspection, we can arrange it at buyer's cost before shipment.

Q8: For buyers in the Middle East - will the pump hold up in high ambient temperature and dust?
A: At 350 bar continuous duty the pump runs hot, so oil cooling and filtration matter more than the pump itself. Keep the oil at the viscosity grade recommended for your ambient temperature and service the filter regularly. In dusty sites we can add an extra dust protection wrap and port caps to the packing on request.

Q9: For buyers in Southeast Asia - how do you prevent rust during sea freight?
A: Exterior surfaces are coated with anti-rust oil, the pump is sealed in a moisture barrier bag and ports are capped. For LCL shipments through humid ports, we recommend the plywood case option, which we quote on request.

Q10: For buyers in Russia and CIS - is cold climate operation an issue?
A: The pump itself is fine, but cold starts need a low temperature hydraulic oil grade and a warm up period before full load. Tell us your lowest ambient temperature and we will advise the oil grade and any start up precautions.

Q11: For buyers in Africa and South America - can you consolidate with other parts and are repair parts available?
A: Mixed containers are welcome: order pumps, travel motors, final drives or valves together and we consolidate into one shipment with a single set of documents. Repair parts such as seal kits, pistons, shoes and control valve components can be added to the same order to keep your workshop stocked.

Q12: What documents come with the shipment?
A: Commercial invoice, packing list and, on request, certificate of origin. Please tell us the exact document set your customs broker requires before booking, as extra documents may need lead time.

Q13: What if there is a problem after installation?
A: Send photos or a video of the fault together with oil cleanliness, working pressure and running hours. Our engineers will judge whether the cause is the pump, contamination or installation, and the terms are settled according to the warranty agreed with your sales manager.