A8VO107 Rexroth Axial Piston Pump for CAT 320B 322B 325B Excavator

A8VO107 Hydraulic Main Pump for Excavator Hydraulic System

This A8VO107 hydraulic main pump is supplied for excavator and heavy equipment hydraulic system applications. Public pump references describe the A8VO107 as an axial piston variable displacement pump in the Rexroth / Bosch Rexroth A8VO series, commonly used in high-pressure mobile hydraulic systems.

The A8VO107 should not be described as a hydraulic gear pump. It is better identified as a hydraulic main pump, axial piston pump, or variable displacement piston pump. Final fitment depends on the full pump model code, rotation direction, shaft, ports, regulator or controller configuration, and machine serial number.

Application and Fitment Reference

• Primary Model: A8VO107

• Product Type: Hydraulic Main Pump / Axial Piston Pump

• Machine Category: Excavator / Heavy Equipment Hydraulic System

• Common Machine: CAT 320, 320B, 320L, E320BL, 322B, 322L, 325B, 325L, 325C, E300B

• Common Cross References: 123-2229, 153-9184, 0R-9633, 114-0602, 114-0604, 7Y-4002

• Supply Type: Genuine, OEM, rebuilt, or replacement options may be available depending on current stock.

Technical Reference

Public A8VO107 references list the pump as a high-pressure axial piston pump with 107 cm³ class displacement. Some supplier references list nominal pressure up to 400 bar and maximum pressure up to 450 bar, but the actual specification can vary by the complete model code and configuration. Please confirm the nameplate before ordering.

Common Symptoms That May Require Main Pump Inspection

• Slow hydraulic response: boom, arm, bucket, swing or travel functions respond slowly.

• Weak hydraulic power: the machine cannot maintain normal digging or travel force under load.

• Abnormal pump noise: whining, cavitation sound or vibration during operation.

• Hydraulic oil overheating: internal leakage, contamination or incorrect pressure control may increase oil temperature.

• Oil leakage: leakage appears around the pump body, shaft seal, ports or control valve area.

Fitment Check Before Ordering

Before ordering this A8VO107 hydraulic pump, please compare it with your original unit. Important confirmation points include the full pump nameplate, part number, rotation direction, shaft type, mounting face, port layout, controller or regulator type, hydraulic line connection and machine serial number.

For faster confirmation, please send clear photos of the original pump nameplate, shaft, ports, controller/regulator side, mounting face and machine model plate. This helps reduce wrong orders and confirms whether the A8VO107 pump is suitable for your excavator.

Installation and Maintenance Notes

• Clean the hydraulic tank, suction line and return line before installing the pump.

• Inspect or replace hydraulic filters if contamination is found.

• Protect all pump ports from dust, water and metal particles during installation.

• Fill and bleed the pump according to the machine service procedure before heavy-load operation.

• After installation, run the machine at low speed first and check for leakage, abnormal noise, pressure fluctuation and overheating.

Ordering Information

Topvelsun supplies hydraulic main pumps, axial piston pumps, gear pumps and pump assemblies for Caterpillar, Komatsu, Hitachi, Hyundai, Kobelco and other construction equipment. For this A8VO107 pump, please provide the machine model, serial number, original pump model code and photos before quotation.

FAQ

Is A8VO107 a hydraulic gear pump?

No. A8VO107 is generally described as an axial piston hydraulic pump or variable displacement piston pump. It should not be described mainly as a hydraulic gear pump.

Which machines commonly use A8VO107?

Public references commonly list A8VO107 for CAT 320, 320B, 320L, E320BL, 322B, 322L, 325B, 325L, 325C and E300B type applications. Final fitment must be confirmed by the full pump model code and machine serial number.

What cross reference numbers are associated with A8VO107?

Common public references include 123-2229, 153-9184, 0R-9633, 114-0602, 114-0604 and 7Y-4002, among others. Cross references should be verified against the original pump nameplate.

What should I send for fitment confirmation?

Please send the machine model, serial number, original pump nameplate, shaft photo, port layout photo, regulator/controller side photo and mounting face photo.