Type: Aftermarket, dual-section gear pump
Rotation Direction: Right (clockwise)
Mounting Flange: SAE B, 2 holes
Flow Rate Section 1: 36 cc/rev
Flow Rate Section 2: 29 cc/rev
Max Pressure Section 1: 250 bar
Max Pressure Section 2: 275 bar
Max Shaft Torque: 460 Nm
Suction Port: Single SAE 2” flange
Pressure Port Section 1: 1 1/16”-12 UNF
Pressure Port Section 2: 7/8”-14 UNF
Note: The aftermarket pump has a slightly larger housing. Ensure the rear drive shaft universal joint size (106.4 x 34.9 mm) allows proper fit before installation.
Function and Fault Diagnosis:
The hydraulic pump is the heart of the hydraulic system, converting engine mechanical power into oil pressure to drive all machine functions. Failure of the pump completely immobilizes the backhoe loader. Common causes of problems include contaminated oil or running dry (cavitation).
Common signs of wear or failure:
Application in machines
|
Brand
|
Type / Series / Model
|
|
JCB |
Backhoe Loaders: 3CX, 4CX (including Super, Contractor, Sideshift, Centremount models) equipped with servo steering (Precision Control), especially 92HP & 100HP builds. |
The list above is for reference. This pump is dedicated to models with Precision Control (PC), produced from serial number M953913 and for builds 9812/XXXX and 9802/XXXX.
Data sheet
Specific References
Manufacturer
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The hydraulic pump is the heart of the hydraulic system, converting engine mechanical power into oil pressure to drive all machine functions. Failure of the pump completely immobilizes the backhoe loader. Common causes of problems include contaminated oil or running dry (cavitation).

















