4120002731 SDLG LG978 L978F L975F Tandem Hydraulic Gear Pump

4120002731 SDLG Wheel Loader Tandem Hydraulic Gear Pump

Olive Branch Hydraulics offers an aftermarket replacement enquiry for the 4120002731 tandem hydraulic gear pump used in SDLG wheel-loader applications. Customers may search for this pump as a 4120002731 gear pump, SDLG LG978 duplex pump, 100/11 tandem pump or P76-F31-1511-0012 hydraulic pump. Use the equipment part number together with the complete pump identification when requesting a quotation.

Part number and model cross-reference

The model endings 0012, 001L and 0011 are retained separately. A search result containing the same material number is useful for identifying a candidate pump, but does not prove that shaft, rotation, ports and internal configuration are identical. These references are not additional independent OEM material numbers.

SDLG equipment applications

Supplier records associate 4120002731 with SDLG LG978 / L978 wheel loaders. Other supplier listings identify L978F and L975F applications. These are equipment references for replacement checking rather than a guarantee covering every production year or machine serial number. Some suppliers describe the assembly as a steering pump; confirm the hydraulic circuit and section assignment on the actual machine.

Before ordering, send the loader model, machine serial number, old-pump nameplate and photographs of the shaft, mounting flange and all ports. Include the complete printed model suffix. We can then check the proposed replacement configuration against your original pump and the required hydraulic circuit.

Technical parameters and selection

The catalogue describes this product as a 100/11 duplex pump. Exact section displacement, continuous pressure, peak pressure, minimum speed, permitted inlet conditions and temperature limits must be checked for the ordered assembly. The technical table separates product identification from the wider 7600-family reference data to prevent a series maximum being presented as a tested rating for this particular pump.

The official 7600 series sheet covers multiple gear widths and lists different pressure limits by size. It describes a cast-iron roller-bearing pump design with pressure-balanced wear plates. Its family displacement range and speed ceiling help identify the series, but they do not establish the complete tandem assembly specifications. Ask for the confirmed drawing and test data for the selected supply configuration.

Installation dimensions to confirm

Check flange pilot diameter, mounting-hole centres, shaft spline count and profile, shaft projection, inlet and outlet connection dimensions, port position, overall length and mounting clearance. Confirm rotation viewed from the shaft end and the order of the two pump sections. Do not select a pump solely because its appearance or body colour resembles the old unit.

Product photographs

The gallery includes an Olive Branch Hydraulics product photograph and two different external supplier reference views. Reference-photo watermarks are retained. They illustrate candidate assembly shapes and port arrangements; the supplied configuration must be agreed using the drawing and original sample.

Reference records

Meppon catalogue: 4120002731 gear pump P76-F31-1511-0012 SDLG.

Linyi Liwo supplier catalogue: duplex pump 100/11, 4120002731, P76-F31-1511-0012 for LG978; listed weight 43 kg.

Wheel-loader parts supplier catalogue: 4120002731, P76-F31-1511-001L for LG978 and L975F.

L978F loader-parts supplier listing: 4120002731, 100/11 designation.

Permco official 7600 series technical sheet: family specifications only.

Request a replacement quotation

For a 4120002731 SDLG tandem gear pump quotation, provide quantity, destination and the identification details above. Specify whether the request concerns an LG978 / L978, L978F or L975F wheel loader. Olive Branch Hydraulics will confirm the offered model, dimensions and technical conditions before supply.