Introduction
Follow this guide to disassemble and rebuild a leaky, clogged, or otherwise improperly-working spray gun for the Graco Paint Sprayer, model 17C325.
As you disassemble the spray gun, take the time to clean all the parts with soap, water, and a brush before reassembly, and replace any worn-out parts as needed, which are provided in the gun repair kit (part # 288817).
The filter is not included in the repair kit, but it may be a good idea to clean or replace it during the rebuild process.
What you need
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Pull the spray tip straight up and out of its housing near the front of the spray gun.
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Use a 5/16" socket and socket wrench to remove the lock nut securing the end cap on the back of the spray gun.
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Push up on the trigger guard to unseat it from its clip at the bottom of the handle.
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Use a 5/8" wrench to remove the valve seat from the front of the spray gun.
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Grab the front tip of the gun needle and pull it straight out of the housing.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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6 Comments
Hi YURIY,
To help us improve the guide, can you please elaborate what would break? Any specific steps? Any extra detail would help. Thanks!
I can't break the tip loose. The piece that u screw the tip on to. I can't break it loose.
From factory, or after use, they are screwed in incredibaly tight. I coulnd't get the valve seat to budge. I'd avoid using an adjustable wrench since those sometimes come loose and strip the nut. The gun repair kit is about $70-$100. HD sells the entire gun for $150, which includes a 515 tip, orange spray tip guard, and new filter inside. Probably better to buy. Great guide though. If the needle can be cleaned to stop the post-release leak, then its probably OK to keep it. Else new gun may be a better option.