Disassemble Gun for Needle/Housing Replacement
At 3:13 in
How to clean & rebuild a Graco Contractor II gun. Graco Sprayer Tips.
What happens here
For a full rebuild, typically done every two years or if paint starts seeping from the needle, begin by attaching a crescent wrench to the front part of the gun. Before unscrewing anything, it's crucial to squeeze and hold the trigger down firmly. If the trigger is not held down, the needle can scar the new housing when reassembled. While holding the trigger, use the crescent wrench to unscrew the front part of the gun. This exposes the needle. Then, release the back of the gun where the spring is housed. Unscrew the back part using the crescent wrench to release the tension from the spring. Carefully remove the spring. At this point, the needle will be exposed from both sides.
Goal: Prepare the gun for replacing internal components like the needle and O-rings
Tools and materials
- Adjustable Crescent Wrench — Loosening and tightening the gun's housing parts
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