4120001392 JHP2080/2040 LGMG MT86 MT86H MT95 Tandem Gear Pump

4120001392 JHP2080/2040 tandem hydraulic gear pump

Olive Branch Hydraulics supplies aftermarket tandem gear pumps selected for the original machine configuration. The reference nameplate clearly pairs material code 4120001392 with model JHP 2080/2040. This page brings the part number, model spellings, equipment references and installation requirements together so buyers can identify the correct pump before requesting a quotation.

The double pump has two coupled gear sections driven by one input shaft. Each circuit must be checked individually: the pressure required by one section does not establish the allowable pressure of the other, and the total model code does not replace a hydraulic performance sheet.

Part number and model identification

Equipment and application references

A machine-family name alone is insufficient for replacement selection. Trucks can use different hydraulic layouts across production dates or configurations. Send the equipment model, serial number, existing pump material code and full model suffix. If the nameplate is unreadable, provide clear photos of the complete pump, shaft end, mounting flange and every oil connection.

Connection dimensions and technical checks

The technical table includes Haizhuo JHP2/2 series drawing references for JHP2080/2040. A, B, C and D are drawing symbols, rather than independently measured dimensions of the photographed LGMG pump. Confirm the corresponding outline drawing before using any listed value for installation. Flange-port diameters, bolt pitches and thread sizes also require comparison with the original unit.

Measure the shaft spline profile, number of teeth, outside diameter and usable engagement length. Check the locating pilot and mounting bolt centres. Record inlet and outlet locations from a consistent shaft-end viewpoint. Confirm rotation from the original direction arrow or manufacturer documentation; do not select rotation from the position of a single port.

Pressure, speed, fluid-temperature limits and actual weight require the exact supplied configuration data. Once displacement is verified, theoretical section flow in L/min equals displacement in cm³/rev multiplied by pump rpm and divided by 1000. Actual delivered flow also depends on volumetric efficiency, oil condition and operating pressure. This calculation is a selection aid, not a certified performance test.

Reference photographs

The gallery shows the port side, rear body and readable original nameplate. The physical nameplate remains visible for identification. These are configuration reference photographs; the shipped aftermarket pump branding, paint and identification plate are confirmed with the quotation.

Quotation and replacement support

For a 4120001392 JHP2080/2040 quotation, send quantity, destination, equipment details and original-pump photos. Olive Branch Hydraulics can review the mounting arrangement and oil connections and discuss sample matching or OEM/ODM requirements. Request the final drawing and agreed performance data before purchase. Pre-shipment inspection and configuration confirmation can be included in the order requirements.

Frequently asked questions

Is 4120001392001 the same pump? No. That reference is listed as an oil seal and should be ordered separately after dimensional confirmation.

Does JHP2080/2040 fit every MT86 or MT95? Fitment depends on the serial-number configuration, shaft, flange, ports and rotation. A matching model text is a starting point for verification.

Can I search by the material number? Yes. Identification text includes 4120001392, JHP2080/2040, JHP2080-2040 and the relevant machine names in readable page content.