HP2D36-G2SP-21.0/11-XR Hydraulic Main Pump Assembly

HP2D36-G2SP-21.0/11-XR Hydraulic Main Pump Assembly

The HP2D36-G2SP-21.0/11-XR hydraulic main pump assembly is supplied for excavator hydraulic system repair. It is commonly searched as HP2D36-G2SP-21.0/11-XR, HP2D36-G2SP-21/11-XR, 07407, hydraulic main pump, hydraulic pump assy, piston pump assembly or excavator main pump for 14-ton class machine references.

This page focuses on HP2D36-G2SP-21.0/11-XR as the main pump model. Final fitment should be confirmed by the old pump nameplate, shaft type, tooth count, front flange, rear flange, gear pump configuration, regulator position, oil port layout and machine information before ordering.

Equipment Reference and Fitment Notes

This hydraulic pump is positioned for 14-ton class excavator hydraulic system repair. Some market references may connect HP2D36 series pumps with compact and small excavator applications, but the exact pump model should always be checked against the old pump nameplate before confirming machine fitment.

If the machine is Hyundai R80 series, please confirm the old pump model first. Machine model alone is not enough for hydraulic pump selection because the same machine series may use different pump configurations by production version, hydraulic layout, shaft specification and regulator setting.

For accurate ordering, compare the removed pump with the replacement pump carefully. Photos of the old pump nameplate, shaft side, mounting flange, gear pump side, regulator side, oil ports and complete pump body are useful for confirmation.

Pump Model and Reference Notes

HP2D36-G2SP-21.0/11-XR is the main model number of this product page. It should stay visible in the SEO Title, H1, top parameters, first paragraph, product body and image ALT text.

07407 can be used as a checking reference for this hydraulic pump direction. The simplified writing format HP2D36-G2SP-21/11-XR may also be used by buyers when searching, but the full model HP2D36-G2SP-21.0/11-XR should remain the primary page signal.

Do not mix nearby pump models such as HP2D36-G1SP-9.00/XXX-XR, HP2D36-G2SP-18.8/6.0-SR, HP2D25-G2SP-21.0/11-XR or HP2D28-G2SP-16.8/6.5-SR into the top parameter area unless the old pump nameplate and physical configuration confirm interchange. Similar HP2D series pumps can vary by displacement, shaft, gear pump, regulator and oil port layout.

How to Confirm the Correct Hydraulic Pump

Hydraulic pumps can look similar from the outside, but small differences in shaft type, tooth count, flange size, port direction and regulator structure may affect installation and working pressure. Please compare the removed pump before ordering.

• Confirm whether the old pump model is HP2D36-G2SP-21.0/11-XR or HP2D36-G2SP-21/11-XR.

• Check whether the old pump has reference number 07407 on the nameplate or supplier record.

• Compare the shaft type, tooth count, shaft length and rotation direction.

• Check the front flange, rear flange, mounting hole position and gear pump configuration.

• Confirm the main oil port size, pilot port position, drain port layout and regulator position.

• Send photos of the old pump nameplate, shaft side, port side, regulator side and machine nameplate before quotation if you are not sure.

Common Hydraulic Pump Failure Symptoms

A hydraulic main pump may need inspection or replacement when the machine has weak hydraulic power, slow operation, abnormal pump noise, unstable pressure, oil overheating, heavy internal leakage, poor combined movement, pressure drop under load or metal particles in hydraulic oil.

Before replacing the pump, check hydraulic oil level, oil cleanliness, suction line, return filter, pilot pressure, relief valve setting, regulator control and related hydraulic components. Some hydraulic problems may be caused by system contamination, control valve leakage or pilot signal issues rather than the pump itself.

If the old pump failed because of contaminated oil, blocked filter, air suction, poor lubrication or incorrect pressure setting, the root cause should be corrected before installing the replacement pump. Otherwise, the new pump assembly may fail again.

Installation and Testing Notes

Before installation, clean the hydraulic system and inspect the oil tank, suction hose, return filter and pilot lines. Do not install the replacement pump into a contaminated hydraulic system.

After installation, fill and bleed the pump according to the repair procedure. Do not run the pump dry. Check oil leakage, abnormal noise, pilot pressure, main pressure and machine movement before full-load operation.

If the pump starts normally but the machine movement is still weak or unstable, inspect the regulator control, pilot circuit, relief valve, control valve and hydraulic motor load before assuming the new pump is defective.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this HP2D36-G2SP-21.0/11-XR hydraulic main pump is suitable for hydraulic system repair when the old pump is worn, noisy, leaking internally or unable to maintain working pressure.

For parts distributors, it can be supplied as an HP2D36-G2SP-21.0/11-XR hydraulic pump assembly reference for 14-ton class excavator repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old pump model, machine model, serial number and photos of the old pump from multiple angles.

FAQ

What is the main product on this page?

This page is for the HP2D36-G2SP-21.0/11-XR hydraulic main pump assembly used for excavator hydraulic system repair.

Is HP2D36-G2SP-21/11-XR the same search format?

HP2D36-G2SP-21/11-XR is a simplified writing format of HP2D36-G2SP-21.0/11-XR. The full model should be used for final confirmation.

Can this pump be confirmed only by Hyundai R80 model name?

No. Hyundai R80 series can be used only as a machine reference after old pump confirmation. The old pump nameplate, shaft, flange, gear pump configuration and port layout should be checked before ordering.

Can nearby HP2D36 pump models be used as replacements?

Nearby HP2D36 models should not be treated as automatic replacements. Similar model names may have different shaft, displacement, regulator, gear pump and oil port configurations.

What photos should I send before ordering?

Please send photos of the old pump nameplate, shaft side, front flange, rear side, oil ports, regulator side, gear pump side and machine nameplate. These photos help confirm whether HP2D36-G2SP-21.0/11-XR is the correct pump assembly.