Hydraulic Pump Assembly 2437U191F2 2437U191F3 Fits for Kobelco K904 SK100 K904L 5285c96b 7f38 49d5 ab2f cbb2c5d7a819.jpg

2437U191F2 2437U191F3 Hydraulic Pump Assembly for Kobelco K904 SK100 K904L

Made for Kobelco K905, MD140BLC and K905LC-II, this aftermarket new hydraulic pump assembly (2437U188F1) feeds pressurized oil to the cylinders and motors so the machine can dig, lift and travel. It also appears under part number 2437U188F2.

Category: Hydraulic Pump Assembly

Description
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2437U188F1 Hydraulic Pump Assembly is an aftermarket replacement hydraulic pump assembly for Kobelco, including K905, MD140BLC, K905LC-II. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as new, aftermarket.

2437U188F1 Hydraulic Pump Assembly Specifications

Product Type: Hydraulic Pump Assembly
Part Number: 2437U188F1, 2437U188F2
Compatible Brand: Kobelco
Condition: new, aftermarket
Country of Origin: China

Kobelco Models Compatible with the 2437U188F1 Hydraulic Pump Assembly

Fitments: (K905) – MARK II EXCAVATOR BTW LP2401-LP3407 (1/00-12/03)
(K905LC) – MARK II EXCAVATOR ASN YPU00001 (1/87-12/03)
(K905LC) – MARK II EXCAVATOR BTW YP1001 – YP1281 (1/87-12/03)
(K905LC) – MARK II EXCAVATOR BTW YP1001 – YP1281. (4/89-12/03)
(MD140BLC) – EXCAVATOR BTW YP1001 – YP1281 (1/80-12/06)
(MD140BLC) – EXCAVATOR BTW YPU0001 – YPU0300 (1/80-12/06)
(K905LC) – EXCAVATOR ASN YP1282 (1/85-12/03)

Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.

What Does a Hydraulic Pump Do?

The main hydraulic pump converts engine power into pressurized oil flow. That oil moves the boom, arm, bucket, swing and travel functions, so every machine movement depends on it. Because it takes the most punishment, it is usually the first major hydraulic component to wear out.

Signs the Part Needs Replacing

Slow or weak movement on all functions: when everything is slow at once, not just one circuit, the pump is the most likely source.
Whining, knocking or grinding noise: internal wear or cavitation, especially on start-up or when the oil is cold.
Hydraulic oil running hot: internal bypass leakage turns pressure into heat.
Metal particles in the filter or case drain: a failing pump sheds metal and pushes out more case drain flow.
Erratic or spongy movement, foamy oil: air entering the suction line, or aeration, upsets pump flow.

These symptoms overlap with clogged filters, low oil, air in the suction line and worn valves, so check the filters and oil level before replacing the part.

How to Order and Install the 2437U188F1 Hydraulic Pump Assembly

Confirm your machine model, the part number and the pump model on your existing pump before ordering.
Send a photo of the old pump or the nameplate if you are not sure; LIONKITS will confirm fitment for you.
Change the hydraulic oil and the return filters before fitting the new pump; a new pump installed in contaminated oil will fail early.
If the old pump failed internally and shed metal, flush the tank, hoses and oil cooler and inspect the control valve and motors for contamination.
Fill the pump case with clean hydraulic oil and prime the pump as the service manual specifies before the first start.
Check the suction line, strainer and fittings for air leaks, and tighten bolts to the specified torque.
Run the machine at low speed first, then check pressure, noise and leaks.

Frequently Asked Questions

What is the 2437U188F1 Hydraulic Pump Assembly?

The 2437U188F1 Hydraulic Pump Assembly is an aftermarket replacement hydraulic pump assembly for Kobelco , supplied as new, aftermarket under part numbers 2437U188F1, 2437U188F2.

Which Kobelco models does the 2437U188F1 Hydraulic Pump Assembly fit?

It is listed for K905, MD140BLC, K905LC-II and other models in the compatibility list above. If you are unsure, send your machine nameplate to LIONKITS for confirmation.

How do I know my hydraulic pump is failing?

Typical signs are slow or weak movement on all functions, whining or knocking noise, hot hydraulic oil, metal particles in the filter or case drain and erratic or spongy movement.