Leaking Pump Dewalt 3750psi 4gpm

Machine Repairs
1

To start out, I am 1 month into my pressure washing journey.

I just bought a Dewalt 3750 PSI 4gpm Pressure washer (used) on Facebook Marketplace. I just cranked it up for the first time.

I immediately noticed there is a slight leak coming from the pump. Could this be a blown out O-ring? Or possibly something more serious? Am I able to use this pressure washer effectively with this leak? Or should the repair be done immediately?

Also does anyone have a suggestion on where to find replacement parts or a water seal repair kit?

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2

Don’t bother repairing, just let 'er drip and upgrade to a belt drive soon as you can. You can check the bolts for tightness, just don’t over torque.

3

AllPartsInc has a website that has been helpful for my “DeWalt” washer.

4

I know they used several pumps. The manifold and case look GP. What’s the model number on the pump itself?

If it’s a tx1510a then it uses a K160 packing kit. Pull the manifold and see if you have a cracked plunger before you order in parts.

1 Like
5

I had two of these at one point. They’re very poorly made. One was actually faulty from the manufacturer. The shaft didn’t fit the hole and it seized immediately.

6

if we can identify the pump i can get you what you need - 800-233-3873 ext 224