Question about GRACO INC Paint Sprayer. ProX7 Airless Paint Sprayer 261815

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Paint sprayer leaking out bottom. Paint all inside casing. What is leaking?

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This is a semi-professional piston pump airless paint sprayer. Inside the paint pump there are 2 sets of packings, one set seals the piston where it comes out of the pump (the top) where you put a drop of TSL (throat seal lube) to lube them each day you spray; the other set is inside the pump cylinder where they are lubed by the paint or water. When the packings wear (because paint is abrasive), the paint starts to leak out at this point, then it can fill the TSL cup and overflow. The sprayer needs a regular service to change the packings and maybe the piston rod if it is scored, otherwise a damaged rod will wear out the new packings fast.

Posted on Jan 03, 2015

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Same thing happening

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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I cannot find model 834
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dc008a3.jpg

To post a photo of your paint sprayer so I can see it:
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