AP2D36 Uchida Rexroth Hydraulic Pump is a replacement uchida rexroth hydraulic pump for Hyundai Daewoo excavators, including R80, DH80. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as original new.
AP2D36 Uchida Rexroth Hydraulic Pump Specifications
- Product Type: Uchida Rexroth Hydraulic Pump
- Part Number: AP2D36
- Compatible Brand: Hyundai Daewoo
- Machine Type: Excavator
- Condition: Original New
- Country of Origin: China
Hyundai Daewoo Models Compatible with the AP2D36 Uchida Rexroth Hydraulic Pump
- Excavator: Hyundai R80, Daewoo DH80
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 AP2D36 Uchida Rexroth 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.
Frequently Asked Questions
What is the AP2D36 Uchida Rexroth Hydraulic Pump?
The AP2D36 Uchida Rexroth Hydraulic Pump is a replacement uchida rexroth hydraulic pump for Hyundai Daewoo excavators, supplied as original new under part number AP2D36.
Which Hyundai Daewoo models does the AP2D36 Uchida Rexroth Hydraulic Pump fit?
It is listed for R80, DH80. 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.



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