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If you are sure you do not need to replace your entire pump, but can simply replace the Outlet Valve Manifold on your Himore pressure washer pump, then this tutorial is for you. Follow these easy step-by-step instructions and The ROP Shop's Rugged U will show you how to complete the install. Let's get started! If you are sure you do not need to replace your entire pump, but can simply replace the Outlet Valve Manifold on your Himore pressure washer pump, then this tutorial is for you. Follow these easy step-by-step instructions and The ROP Shop's Rugged U will show you how to complete the install. Let's get started!
How-To Installation Product & Troubleshooting Problems Pressure Power Washer and Pump Maintenance
August 3, 2021

HOW TO REPLACE AN OUTLET VALVE MANIFOLD KIT ON YOUR HIMORE PRESSURE WASHER PUMP BRAND

If you are sure you do not need to replace your entire pump, but can simply replace the outlet valve manifold on your Himore pressure washer pump, then this tutorial is for you. Follow these easy step-by-step instructions and The ROP Shop's Rugged U will show you how to complete the install. Due to the fact that The ROP Shop's outlet valve manifold comes equipped with a new unloader valve and outlet tube, you do not need to remove yours for installation as described below. So you may be able to skip to Step 5. However, in the event you do ever need to replace either of these parts, the following instructions will prove invaluable. Let's get started!

STEP 1: Collect the needed tools

  • Mallet
  • Crescent Wrench
  • Allen Wrench
  • Flathead Screwdriver or Small Pry Bar

STEP 2: Remove the pin (also known as the U-clip) securing the unloader in place using the flathead screwdriver.

STEP 3: Next, use the screwdriver as a lever against the manifold casing to dislodge the unloader from its location.

STEP 4: Use the crescent wrench to remove the outlet tube fitting.

STEP 5: Take the manifold off next by removing the bolts holding it in place. Using the 4mm Allen wrench, remove the bolts and take care to keep them someplace where they will not get lost.

STEP 6: With the bolts gone, the manifold should come off easily. Examine the inside of the manifold. You’ll see four o-ring groups.

Diagram and labeled parts of Outlet Valve Manifold and pump Diagram and labeled parts of Outlet Valve Manifold and pump

STEP 7: The ROP Shop o-ring seal kit comes with four o-rings, but one will be smaller than the other three. Place the smaller o-ring in the slot closest to the unloader port. The larger o-rings will go in the other three open places.

STEP 8: During replacement, ensure the o-rings don’t fall out of the grooves or get pinched between the manifold. This prevents a water-tight seal. Not only can this cause a leak or loss of pressure, but it will also ruin the o-ring completely, requiring you to replace it again.

STEP 9: With the manifold in place, replace the bolts and tighten them by hand to hold the manifold tight against the pump. Then, tighten down the bolts with the Allen wrench, being careful to not over-tighten them (which could break the heads off of the bolts or strip the aluminum threads inside the pump wall).

Outlet Valve Manifold Kit

STEP 10: Before reinstalling the unloader and outlet tube, grease the o-rings at the base of the unloader and outlet tube to help prevent catching or tears while reinserting it into the manifold. Tighten the outlet tube back into place with a crescent wrench. You won’t need to over-tighten it since it has an o-ring at the base to prevent leakage.

STEP 11: Be sure that the unloader is fully seated inside of the manifold so that the U-clip that holds it in place can reinstall. A gentle tap from a mallet may be required to get the valve to move into its correct seating.

STEP 12: Reinstall the clip once the unloader is in place.

With your manifold replacement complete, it’s time to test it out. Make sure you only test the unit with water running through the system.

Replacement Outlet Valve Manifold SKU - 101355

Replacement unloader valve SKU - 100940

Replacement outlet tube fitting SKU - 101354

Associated Models - 308653003, 308653025, 308653052, 308653007, 308653045, 308653006, 308418003, 308418007, APW25/2.3L, PWV25/2.3, PWV(R)27/2.3

RUGGED U:
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