215-2876 Hydraulic Pump for Caterpillar CAT 3054 420D 430D Engine Loader

Part 9T-0290 is an aftermarket new hydraulic pump covering CAT 4, 4A, 4P and 4S crawler bulldozers. In service it feeds pressurized oil to the cylinders and motors so the machine can dig, lift and travel. Unit weight is about 23 kg.

Category: Hydraulic Pump Assembly

Description
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9T-0290 Hydraulic Pump is an aftermarket replacement hydraulic pump for CAT crawler bulldozers, including 4, 4A, 4P, 4S, 54. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as aftermarket new with a 12-month warranty.

9T-0290 Hydraulic Pump Specifications

Product Type: Hydraulic Pump
Part Number: 9T-0290, 9T0290
Compatible Brand: CAT
Machine Type: Crawler Bulldozer
Condition: Aftermarket new
Product Weight: 23kg/50.7pounds (1 piece)
Warranty: 1-12 months
Brand: LIONKITS
Country of Origin: China

CAT Models Compatible with the 9T-0290 Hydraulic Pump

Caterpillar CAT Crawler Bulldozer 4 4A 4P 4S 54 55 D4H D4H III

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 9T-0290 Hydraulic Pump

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.

Shipping, Payment and Support

Lead time: 6-8 working days
Delivery time: 5-12 days by air, 35-45 days by sea, Notes, We will give you a reply within 12 hours
Payment methods: Credit Card, PayPal, T/T, Western Union

Frequently Asked Questions

What is the 9T-0290 Hydraulic Pump?

The 9T-0290 Hydraulic Pump is an aftermarket replacement hydraulic pump for CAT crawler bulldozers, supplied as aftermarket new under part numbers 9T-0290, 9T0290.

Which CAT models does the 9T-0290 Hydraulic Pump fit?

It is listed for 4, 4A, 4P, 4S, 54, 55, D4H, D4H 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.