Question about GRACO INC GMAX II 5900 Airless Paint Sprayer Gas powered with gun & hose

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How to replace packing on a 5900 graco

Replacing packing how to get ball out

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There are two balls in your paint sprayer: One is in the piston and can be removed after you take the piston valve out to get the piston packings off. Be careful of the smooth surfaces of the piston where it contacts the packings. The other is in the intake valve (foot) and held in place by the ball guide or cage. The cage can get stuck because paint gets between it and the foot. DO NOT put something in the back of the foot and try to pound the ball and cage out. The cage is hard steel, read brittle and the tabs on the cage can/will break off. I usually clean out the foot as best I can then use needle nose pliers in the holes in the top of the cage and twist it back and forth until it gets free enough to come out. Clean all surfaces and it'll go in much easier than it came out.

Posted on Jan 23, 2013

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Posted on Jan 02, 2017

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