How to Remove the Waste Ink Pump Assembly on Epson WF-7620: A DIY Troubleshooting Guide

Question:

Hi, do you have a video or tutorial showing how to remove the waste ink pump assembly on an Epson WF-7620? I’m looking to service or replace that part.

Answer:

Locating Resources for Removing the Waste Ink Pump on Epson WF-7620

At the time of this writing, we do not have a dedicated video specifically showing the removal of the waste ink pump assembly for the Epson WF-7620. However, given the mechanical design similarities between Epson's WorkForce wide-format printers (WF-7610, WF-7620, WF-7621, etc.), you can often refer to related tutorials for printhead, capping station, or rear disassembly when preparing to remove the pump.

The waste ink pump (sometimes called the purge unit or pump motor assembly) is located beneath or near the capping station. Here's a general idea of what’s involved in removing it:

1. Disassemble the Printer’s Outer Housing

• Remove the back panel and side covers to access the internal frame.

• Take caution with ribbon cables and connectors—they’re fragile and often clipped into delicate sockets.

2. Access the Capping Station

• Slide the printhead to the far side and unplug the power.

• Unfasten the capping station assembly from the carriage rail and remove the flexible ink tubing that routes waste to the reservoir.

3. Locate and Remove the Pump Assembly

• The waste ink pump is typically a stepper motor attached to a rotary valve with tubing and gears.

• Unscrew the motor and gear housing from the frame.

• Be mindful of the alignment between the motor shaft and the cam arm that drives the suction mechanism.

4. Clean or Replace as Needed

• If cleaning, flush the tubes with warm distilled water or a printhead cleaning solution.

• If replacing, be sure to order the correct part number for the WF-7620 series—there are slight design differences across models.

How to Search for Related Video Guides

With over nine years of experience and more than 700 repair and maintenance videos on our channel, there’s a good chance we’ve covered similar Epson printer teardown procedures. That said, YouTube’s built-in search function is often more accurate than memory when it comes to finding specific content.

Here's how to search efficiently:

Method 1: YouTube Channel Search

• Go to our BCH Technologies YouTube Channel (https://youtube.com/@bchtechnologies).

• Click the magnifying glass icon (🔍) at the top right.

• Enter terms like:
  "WF-7620 pump", "Epson purge assembly", or "Epson capping station removal"

• This search will return only videos published on our channel.

Method 2: Google Site Search

Alternatively, type your keywords into Google followed by:
site:youtube.com/@bchtechnologies
For example:
remove Epson WF-7620 ink pump site:youtube.com/@bchtechnologies
Please note, this method often returns fewer results than searching directly on YouTube, but it can be useful if you're already familiar with using Google for more refined queries.

A quick note: Hands-on repairs like this involve dealing with tight spaces, fragile parts, and precise reassembly. Because of the nature of this work, we’re not able to offer remote repair advice or one-on-one support. However, we do offer in-person diagnostic and repair services at our printer service facility (https://bchtechnologies.com/printer-repair-service). Due to high demand, our intake process works on a first-come, first-served basis, and turnaround times may vary. Our services include both full-unit and part-specific repairs, with instructions and procedures outlined clearly. That said, we realize that our pricing may not suit every repair budget. For those who prefer DIY solutions, we strongly encourage exploring repair tutorials on our YouTube homepage (https://youtube.com/@bchtechnologies). Using the search bar next to the "About" tab will help you find the right content more quickly—and you may even find helpful walkthroughs from other experienced creators.

Thank you again for your question. Your engagement not only helps you but also aids others in the community. We’re glad to support you in keeping your printer running strong.