PVD-0B-16S PVD0B16S Hydraulic Pump Assembly

1686765M91 is an aftermarket new hydraulic pump for Massey Ferguson 1080, 1085, 4800 and 4900. It feeds pressurized oil to the cylinders and motors so the machine can dig, lift and travel. It also appears under part number 1686766M91. Unit weight is about 5 kg.

Category: Hydraulic Pump Assembly

Description
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1686765M91 Hydraulic Pump is an aftermarket replacement hydraulic pump for Massey Ferguson, including 1080, 1085, 4800, 4900, 135. The main hydraulic pump converts engine power into pressurized oil flow. Supplied by LIONKITS as aftermarket new with a 6-month warranty.

1686765M91 Hydraulic Pump Specifications

Product Type: Hydraulic Pump
Part Number: 1686765M91, 1686766M91
Compatible Brand: Massey Ferguson
Condition: Aftermarket new
Product Weight: 5.000 kg/11.02 pounds(1 piece)
Package Dimensions: 10.24 inch(L) x 7.87 inch(W) x6.30 inch(H)
Warranty: 6 months
Brand: LIONKITS
Country of Origin: China

Massey Ferguson Models Compatible with the 1686765M91 Hydraulic Pump

Massey Ferguson 1080 1085 4800 4900 135 165 180 230 275 362 670 690

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 1686765M91 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

Dispatch and delivery: Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country
Payment methods: Credit Card, PayPal, T/T, Western Union
Returns and refunds: If you encounter any issues with the product, please contact us promptly and provide detailed feedback. We will handle the return or exchange promptly

Frequently Asked Questions

What is the 1686765M91 Hydraulic Pump?

The 1686765M91 Hydraulic Pump is an aftermarket replacement hydraulic pump for Massey Ferguson , supplied as aftermarket new under part numbers 1686765M91, 1686766M91.

Which Massey Ferguson models does the 1686765M91 Hydraulic Pump fit?

It is listed for 1080, 1085, 4800, 4900, 135, 165, 180, 230 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.