KFP3236-20CFESE Gear Pump for Komatsu GD405 GD505 Grader

KFP3236-20CFESE Hydraulic Gear Pump for Komatsu GD405 GD505 Grader

The KFP3236-20CFESE hydraulic gear pump is supplied for Komatsu motor grader hydraulic system repair, especially GD405-1 and GD505-2 grader references. It is commonly requested as a gear pump, pump ass'y or hydraulic pump replacement for grader working and steering hydraulic functions.

This page focuses on KFP3236-20CFESE as the main part number. KFP3236-20, KRP4-27-17CBM, KFP3245CFMSS and KFP3232CFMSS can be used as checking references, but final fitment should be confirmed by the old pump number, shaft type, mounting face, port layout, rotation direction and machine information before ordering.

Part Number and Cross Reference Notes

Common reference numbers for this pump direction may include KFP3236-20CFESE, KFP3236-20, KRP4-27-17CBM, KFP3245CFMSS and KFP3232CFMSS. Some broader market references may also mention KFP2233CVKRJ, KFP3250CFMSS, KFP3260-KP1005AK or 23B-60-11102, but those numbers should be treated as extended checking references only.

Hydraulic gear pumps with similar reference numbers can still differ in shaft spline, shaft length, mounting flange, pilot diameter, port size, port direction, pump body section and rotation. For this reason, the old pump photos and machine details are more reliable than a cross number alone.

Application Reference for Komatsu GD405 and GD505 Graders

This product page should focus on Komatsu GD405-1 and GD505-2 motor grader references. Komatsu GD series graders are used for road construction, grading, site leveling, snow removal and maintenance work, so hydraulic pump performance is important for stable blade control and steering response.

Broader public listings may associate similar Komatsu grader pump numbers with other GD series models, but those models should not be treated as confirmed fitment for this page unless the old pump and machine details match.

For older graders, previous repair history can change the hydraulic pump fitted on the machine. The safest method is to compare the removed pump label, shaft, mounting face, port layout and rotation direction before quotation.

How to Confirm the Correct KFP3236-20CFESE Gear Pump

Before ordering, check the removed pump carefully. Small differences in a grader gear pump may cause installation failure or hydraulic performance problems.

• Confirm whether the old pump number is KFP3236-20CFESE or a listed checking reference.

• Compare the shaft type, shaft length, spline or keyway design.

• Check the mounting face, pilot diameter and mounting hole pattern.

• Compare inlet and outlet port size, thread type and port direction.

• Confirm pump body section, rear cover, flange shape and rotation direction.

• Send machine model, serial number, old pump photos and nameplate photos before quotation if you are not sure.

Common Failure Symptoms

A Komatsu grader hydraulic gear pump may need replacement when the machine shows slow blade movement, weak steering response, unstable hydraulic pressure, abnormal pump noise, oil leakage, hydraulic oil overheating or metal particles in the hydraulic filter.

These symptoms are not always caused by the pump itself. Blocked filters, dirty oil, air entry, suction hose restriction, relief valve faults, control valve problems and worn cylinders can produce similar symptoms.

If metal particles are found in the hydraulic circuit, clean the tank, lines and filters before installing a replacement pump. A new gear pump can fail quickly if installed into a contaminated hydraulic system.

Troubleshooting Before Replacement

Before replacing the KFP3236-20CFESE pump, inspect the hydraulic system to avoid unnecessary replacement or repeated failure after installation.

• Check hydraulic oil level, oil viscosity and oil contamination.

• Inspect suction lines, return lines, fittings and hydraulic filters.

• Check for air entry, loose connections or collapsed hoses.

• Measure hydraulic pressure and flow according to the machine service procedure.

• Inspect relief valves, control valves, steering circuit and blade control components.

• Confirm whether the fault is caused by the pump itself or another hydraulic component.

Installation and Maintenance Notes

Clean the pump mounting area and hydraulic line connections before removal. Cap all open hydraulic ports to prevent dust, water and metal particles from entering the hydraulic system.

Before installation, compare the replacement pump with the removed unit. Check shaft alignment, mounting face, port direction, hose routing and rotation direction before tightening hydraulic lines.

Inspect or replace hydraulic filters, and lubricate or pre-fill the pump according to the service procedure before first startup. Do not run the pump dry.

After installation, start the machine at low speed first. Check for leakage, abnormal noise, unstable pressure, steering response, blade movement and oil temperature before operating under heavy load.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this KFP3236-20CFESE hydraulic gear pump is suitable for Komatsu grader hydraulic system repair when the original pump is worn, leaking or unable to maintain stable oil flow. For parts distributors, it can be supplied as a replacement pump reference for Komatsu GD series grader service demand.

Topvelsun supports small repair orders and bulk inquiries. To improve quotation accuracy, please send the required quantity, old pump nameplate, machine model, serial number and photos of the shaft, mounting face and hydraulic ports.

FAQ

What is the main product on this page?

This page is for the KFP3236-20CFESE hydraulic gear pump used for Komatsu GD405-1 and GD505-2 motor grader hydraulic system references.

Which Komatsu models are the main references?

The main model references for this page are Komatsu GD405-1 and GD505-2 motor graders. Other GD series applications should be checked by old pump number, shaft, mounting face, ports and machine serial number.

What cross references can be checked?

Common checking references may include KFP3236-20, KRP4-27-17CBM, KFP3245CFMSS and KFP3232CFMSS. Broader market references should be confirmed by physical pump comparison before ordering.

Is this pump for Komatsu excavators?

This page should be positioned for Komatsu motor grader applications, not as a primary excavator pump page. If the pump is used on another machine, confirm by the old pump label and physical configuration.

What should I check before ordering?

Please check the old pump number, shaft type, mounting hole pattern, hydraulic port direction, pump body shape, rotation direction and machine serial number. Clear photos of the removed pump are recommended.

What can cause repeated gear pump failure?

Repeated failure may be caused by contaminated hydraulic oil, blocked filters, air entry, restricted suction lines, relief valve problems, incorrect installation or metal particles left in the hydraulic system.