Question about Gilmour No 2pgt Green Thumb 2 Gal Ld Tank Sprayer

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When I pump up the Green Thumb two gallon sprayer, air escapes from the top in the center by the pump handle. Also why must I add oil to the holes in the top?

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You add oil in the two holes to lubricate the seals around the pump shaft. Maybe the seals have dried up now and that is why the air leaks by.

Posted on May 26, 2010

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There is a one way rubber valve at the bottom of the pump. Gently remove it, clean both surfaces and reinstall. That should stop 99% of the leak.

Posted on Aug 01, 2012

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2 Answers

Why does my Green thumb .5 gallon sprayer leaks when pressurized?


sounds like your your rubber seals have worn out,or one has broken fully or you have not put it back on properly

Jul 18, 2014 | Green Thumb HD Hudson 79142GT Gt 2L Hand...

1 Answer

I buy air compressor but how I put the oil


Of course, if this came with a manual.....it should clearly indicate the fill orifice. If it is like the one pictured, The end opposite the handle, where the metal end of the pump is exposed on top of the tank, has a filler hole with a filler cap pushed or threaded into it. Twist this off and add the oil until you see it rise to the half-way point on the sight glass. On brand new units, the filler cap will be taped with a small caution tag, warning you not to start the unit without first adding oil. Most units use a high performance, non-foaming, full synthetic 20-50w oil. If there is no sight glass, the filler cap will have a fill level indicator. Do not overfill!

Oct 21, 2012 | Tool Shop 6 Gallon Air Compressor

2 Answers

Lid does not seal---very loose


If sprayer doesnt seal against pressure, I suggest check cover gasket A (image 1). Check pump cylinder gasket B (image 2) and additionally, check the procedure if pump dont build pressure. on how to remoce pump cylinder on follow lines.

zjlimited_2012.jpg

If pump doesnt build pressure... in most instances, failure of the pumo to build air pressure in the sprayer is due to dry or worm plunger cul leather. To work on cup leather, always remove plunger from pumo cylinder. Do not attempt to oil cup leather through breather hole in **** cap.

First, unthread pumo cap A (image 1). If cap is too tight, and if pumo will build even slight temporary pressure, pressurizing the tnak will make it easier to loosen cap. Once cap is lossened, release tank pressure. Hold pump cylinder by inserting hand through tank filler openning (image 2), and unscrew cap all the way. Pull plunger from cylinder, and remove cylinder from inside the tank.

zjlimited_2013.jpg

Place a few drops of clea oil (not heavier than SAE 30) on leather, and massage into leather until it is soft. Replace plunger cup leather if damaged (image 3). to remove plunger leather assembly, use coin rather than screw driver in the slot of the plunger cup retainer. To reassemble, hold pump cylinder in tank openning, with squared edge of flange, at top of cylinder, toward tank wall.

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Hope this helps to solve it.

Sep 17, 2011 | Chapin Industrial 3.5 Gallon Viton...

1 Answer

I've just been given a roundup 2 gallon sprayer. It seems to me the top should be removable to add the liquids but I can't figure it out and don't want to experiment to the point that I damage...


Howdy MMis971,The sprayer just needs to be pushed down by the handle as you turn counter clockwise. This can be made a little easier by unscrewing the nozzle where it connects to the tank to release any pressure built up by pumping.
Happy Gardening,Coach Dave

Sep 10, 2011 | Roundup 2 Gallon Pro Garden Poly Tank Pump...

3 Answers

The sprayer nozzle is stopped up, i have tried cleaning it out and it still won't spray.


Round up 1.33 Gal Spray can have a bad pump or a clogged filter or both.
Test pump: pump the handle, does it get harder to pump after 10-15 pumps, when you open the cap does air rush out? If yes, pump is good, if not, wear rubber gloves, remove pump/cap assembly, remove inner tube from cap, the handle\ pump plunger will remair with the cap. if the o ring is dry, wipe it clean, put a little petroleum jelly on the plunger o ring To Lubricate it and prevent o ring wear and helps it seal air tight so the pump will work correctly. reassemble handle\cap make sure the Black inner black plastic hose aligns with the white spray hose .
If your pump passed the pump test, lool inside tank at the chemical fluid clean or does the fluid look like it has lumpy white clumps in the fluid, if so, empty fluid in tank into a clean throw away container look at rinse the tank out with water, strain the clumps out with a paper towl draped over the tank opening inserted about 2 inches into tank opening then when you slowly pour the fluid back in hold both end of the paper towel so it does;nt fall in tank the clumps will remain on top of the paper towel , Then your ready to clean the filter in the cap. Remove the black plactic tube from the pump, remove the white out side hose(squeeze the black connector to unlock the white hose , Then look in the hole the the black tube was inserted into, look for clumps (looks like lint from a clothes dryer, about the size of cotton ball, ) in that hole, to clean the clogged filter,I used low pressure air from an air tank, Blown into the hole where the white discharge hose was mounted. The clog should fall out of the opposite hole where the black tubs mounts. Reassemble and test, Also, the white spray tip turns out to change from spray to stream. Wash Hands good the chemicals can soak into your skin, some people are very allergic to the fluid

Jul 11, 2011 | Roundup 2 Gallon Pro Garden Poly Tank Pump...

1 Answer

I am not getting pressure in the sprayer. Any suggestions?


Generally, the problem is either a leak or a bad pump. If you listen carefully and you hear air escaping try making sure the top is on tight (don't go nuts because you will never get it off again) Also many tanks have a gasket or O-ring under the lid. This is often lost or gets out of place, and then crushed by the lip. There is also a gasket or stopper thing at the bottom of the pump cylinder, sometimes this gets loose or gets a piece of stuff in it. It also could be the pump piston itself. HERE is the manual with a section on troubleshooting.
Be careful if you have used hazardous chemicals in it before.
Hope this helps, If it does please rate it.

Jun 18, 2011 | Gilmour Group #Xp20gt Green Thumb 2 Gallon...

1 Answer

Will not pressurize


Typically in small pumps and compressors if there is no belt then it is an oiless system. Your particular one is oilless, so there is no need to oil the pump.

Jul 08, 2010 | Gilmour Bp4 4.5 Gallon Back Pack Sprayer

1 Answer

Replace 0-ring


all I want to know is how I can get a replacement o-ring ASAP without paying to discuss my needphone number and person to call would be helpful.

Mar 23, 2009 | Gilmour & Spray Doc& Poly Tank Sprayer...

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