07431-11400 Gear Pump for Komatsu GD37-6H GD31-3H Grader

07431-11400 Gear Pump Ass'y for Komatsu GD37-6H GD31-3H Grader

This aftermarket 07431-11400 gear pump ass'y is supplied for Komatsu GD-Series motor grader applications. Public parts references list this pump for Komatsu GD31-3H, GD31RC-3A, GD37-5H and GD37-6H, with engine references including the S4D102E series.

This product should not be treated as a general excavator pilot pump. The GD model prefix is associated with Komatsu grader applications, so buyers should verify the original pump number, mounting structure, shaft, port position and machine serial number before ordering.

Application and Fitment Reference

• Primary Part Number: 07431-11400

• Product Type: Gear Pump Ass'y / Main Clutch Booster Pump

• Machine Category: Komatsu Motor Grader / Road Construction Equipment

• Compatible Models: GD31-3H, GD31RC-3A, GD37-5H, GD37-6H

• Engine Reference: S4D102E Series

Common Symptoms That May Require Pump Inspection

• Hydraulic response delay: the related hydraulic function responds slowly or inconsistently.

• Weak pressure assistance: the system cannot maintain stable assist pressure under operation.

• Oil leakage: visible leakage around the pump body, ports or mounting area.

• Abnormal pump noise: whining, vibration or cavitation-like sound during operation.

• Overheating or contamination: dirty hydraulic oil may accelerate internal pump wear.

Fitment Check Before Ordering

Before ordering this 07431-11400 Komatsu grader pump, please compare it with your original unit. Important confirmation points include the original part number, pump body shape, shaft type, mounting flange, port layout, hydraulic line connection and machine serial number.

For faster confirmation, send clear photos of the old pump nameplate, mounting face, shaft, ports and machine model plate. This helps reduce wrong orders and confirms whether the 07431-11400 pump is suitable for your Komatsu GD-Series grader.

Ordering Information

Topvelsun supplies aftermarket hydraulic gear pumps, pilot pumps and pump assemblies for Komatsu, Caterpillar, Hitachi, Hyundai, Kobelco and other construction equipment. For this 07431-11400 pump, please provide your machine model, serial number and pump photos before quotation.

FAQ

Is 07431-11400 an excavator pilot pump?

It should not be described mainly as an excavator pilot pump. Public parts references list 07431-11400 for Komatsu GD-Series motor grader applications such as GD31-3H and GD37-6H. Please verify by original part number and machine serial number.

Which Komatsu models use 07431-11400?

Common public references include Komatsu GD31-3H, GD31RC-3A, GD37-5H and GD37-6H motor graders. Final fitment should be confirmed by the original pump, mounting and serial number.

What should I check before buying this pump?

Check the original part number, shaft, mounting flange, oil ports, hydraulic line connection, pump body shape and machine serial number.

Can you confirm fitment from photos?

Yes. Please send photos of the original pump nameplate, shaft, ports, mounting face and the machine model plate. Our team can help compare the pump before quotation.