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Reassemble Spring Housing, Diffuser, and Knuckle Guard

2:57
4:28
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At 2:57 in

How to Repack or Repair A Graco Airless Spray Gun. Graco airless gun repairs.

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What happens here

First, drop the small, 'top hat'-shaped component (seat retainer) onto the back of the newly installed needle assembly, ensuring it sits correctly. Then, place the new spring from the packing kit into the spring housing. Screw the spring housing back onto the gun, tightening it firmly with the 5/8 inch box wrench. Next, slide the new diffuser (from the kit) through the new knuckle guard. As you begin to screw the diffuser onto the gun, it is crucial to pull and hold the trigger down. This prevents the diffuser from scoring the tip of the needle assembly, which could lead to leaks. Once the diffuser is fully screwed on, reattach the knuckle guard to its proper position.

Goal: Complete the reassembly of the Graco Contractor Gun with new packing kit components.

Tools and materials

  • 5/8 inch Box Wrench — Tightening the spring housing and diffuser
  • New Diffuser Graco — Replacing the old diffuser and ensuring proper spray pattern
  • New Knuckle Guard Graco — Protecting the operator's knuckles and holding the diffuser
  • New Seat Retainer — Proper functioning of the needle assembly and spring
  • New Spring Graco — Providing tension for the needle assembly

What they say

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Now that new nut is tightened down, needle assembly is installed. We're going to drop this little, it looks like kind of a top hat. We're going to drop that down. So, the hole is going to drop right on the back. Going to drop our new spring in. the housing to the spring is going to screw right back on the back using our 5/8 inch wrench. We're going to tighten that down. Now the needle assembly is in there tight. You can check the trigger nice and tight. We're going to put our new diffuser on. Got our new knuckle guard. The old knuckle guard. We're going to stick our diffuser right through the knuckle guard. we begin screwing on our diffuser. You want to pull your trigger down. You got to make sure that trigger is pulled down. Otherwise, while you're screwing on the diffuser, you could end up scoring the end of your needle and it could leak. So, make sure your trigger is pulled down. Screw the diffuser on. And now put our knuckle guard back intact. Now our gun has got a brand new

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