Genuine Parker main hydraulic pump, the heart of the hydraulic system in JCB 4CX backhoe loaders (92HP & 100HP builds). This is a tandem (dual-section) gear pump with a displacement of 33cc/rev (33 L/min per 1000 rpm) for the main section and 29cc/rev (29 L/min per 1000 rpm) for the auxiliary section. This pump is suitable for machines with Manual, Powershift, and Servo (Precision Control) systems, making it highly versatile.
PARKER Hannifin is a global leader in motion and control technologies, supplying components for original equipment (OEM) to leading machine manufacturers, including JCB. By choosing a PARKER pump, you are receiving a product identical in quality and specification to the one your machine left the factory with.
| Brand | Type / Series / Model |
|---|---|
| JCB | Backhoe Loaders: 4CX, 4CXM, 4CN, 4CX SUPER, 4CXSM, 3CX (specific AWS models only) (Mainly 92HP & 100HP builds with Manual, Powershift, and Servo controls) |
The list above is for reference. Please verify the part number on your old pump's housing before purchasing.
Before removing the pump, ensure all pressure in the hydraulic system is fully released (e.g., by lowering attachments and moving joysticks with the engine off). Hydraulic oil under pressure can pierce the skin. Secure the machine against rolling.
The hydraulic pump is the heart of the machine, converting the engine's mechanical power into hydraulic oil pressure. Its failure immobilizes the entire machine. The most common cause of failure is contaminated oil or running "dry" (cavitation).
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It is a dual-section pump (two pumps in one housing, driven by a single shaft). The 33cc section (higher flow) supplies the main working hydraulics (backhoe arm, loader bucket). The 29cc section (lower flow) supplies the second circuit, e.g., the steering system or servo controls.
2. Why must I change the oil and filters when replacing the pump?Failure of the old pump almost always means that metal particles have entered the hydraulic system. Leaving the old oil and filters will cause these particles to be immediately sucked into the new pump, destroying it within minutes or hours. Replacing filters (e.g., REDX filters) and oil (e.g., HYPTRON oil) is absolutely crucial for the longevity of the new pump and is a condition of the warranty.
3. What is the difference between this 33/29cc pump and the 41/26cc pump?Both pumps are for similar JCB machines but have different section displacements. This model (33/29cc) has a lower flow on the main section (33cc vs 41cc) but a higher flow on the auxiliary section (29cc vs 26cc). The choice depends on the specific serial number and factory hydraulic configuration of your machine. Fitting the wrong pump can result in slower attachment speed or steering issues.
Have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you choose the right part to get your equipment back to work as soon as possible.
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