Reassemble Gun Components

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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 (large end first) from the new packing kit into the gun, followed by the new spring. Screw the spring housing back onto the gun and tighten it securely with the 5/8 inch box wrench. Next, place the new knuckle guard onto the gun. Then, attach the new diffuser (from the kit) through the knuckle guard onto the gun's front. It is critically important to pull and hold the trigger down while screwing on the diffuser to prevent the threads from scoring the end of the needle, which could cause paint leaks during operation.

Tools and materials

5/8 inch Box Wrench
Graco Contractor Gun
New Diffuser
New Knuckle Guard
New Spring
New Top Hat Component

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 packing kit. Chris, how to replace a packing kit on a Graco contractor gun.

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