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Graco 600 - Troubleshooting Leakage; Leakage Issues

Graco 600
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307-37811
Troubleshooting
Problem Cause Solution
Fluid
packing nut leaking.
Loose needle packing nut (9).
Tighten.
W
orn needle packings (10).
Replace.
Air leakage from front of gun.
Air valve (12, 13) not seating properly
. Clean, service.
Fluid leakage from front of gun.
Needle (1) worn or damaged.
Replace.
W
orn needle and nozzle seat in fluid
nozzle (2).
Replace fluid nozzle and needle.
Needle packings (10) too tight.
Lubricate packings (10) and adjust
packing nut (9).

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