& Spray Doc& Poly Tank Sprayer Pump Assembly

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

You can pump up the tank okay, but it won’t hold the pressure. Solution: Check the pump gasket at the top of the pump cylinder (tank); it may be cracked or damaged and not forming a seal with the tank cap. Replace the pump cylinder gasket and make sure that it fits tightly around the top of the pump cylinder.
Backpack Sprayer Lever Is Hard To “Pump”

The most common cause of plugs is chemical residue buildup inside the sprayer. Herbicides and pesticides can gum things up if not thoroughly rinsed. Clean out any gunk and rinse out the pump assembly. Also, ensure the check valves are opening and closing freely.

Check for an airlock in the line & pump.

Air can get locked in between the tank and the trigger, but there is an easy fix for this. Simply turn the pump on and hold the trigger at a level lower than the tank, squeeze and hold. What this will accomplish is the sprayer will force the air down and out of the wand.

If no pressure is felt then the sprayer isn`t getting pressure in the first place so the most probable cause is a faulty/missing/dry plunger O ring or leaking non return valve. Replace or lubricate as necessary.
This can be caused by the air pressure being too weak, which can stop the liquid from atomizing, or due to the liquid being of a type that quickly hardens once in contact with the air. The second form of clogging is due to spray pressure being too high.
Chances are there is dirt or debris somewhere in the discharge line. Most likely the nozzle is plugged. RELEASE THE PRESSURE by SLOWLY opening and removing the pump. Then, unscrew the nozzle cap and check to see that it`s clear (see diagram below).
Piston Pumps

The pressure can reach up to 90 psi. The high pressure results in smaller droplets that can reach further. Piston pumps can be used with low abrasive and low viscosity spray liquids like insecticides and herbicides.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Won't hold air & pump up/ – Gilmour & Spray Doc& Poly Tank Sprayer Pump Assembly
ANSWER : I loss pressure, read the manual, took the slide out and saw that the o-ring was crimped out of shape, thus the loss of seal and no pressure! Popped it back to position and it spray is now powerful as day 1…patience is rewarded!

How to fill gilmour spray-doc
ANSWER : All sprayers have a cap that turns anti-clockwise. With all of these you push the handle down and turn firmly.

Lawn Garden Gilmour Garden Watering

Tank will not pressurize after pushing the pump handle down multiple times.
ANSWER : The reason it might not pressurize is there might be a hole in your tank or hose to the spraier itself if it has holes in the hose get a new one put it on the tank and handle. if hole in the tank duct tape it or seal it with a sealent. but it wont pressurize with a hole because the air comes in and out of the hole. hope this helps you

Won't seal and hold pressure – Ace Hardware Acer Spray and Go Sprayer
ANSWER : Try smearing some Vaseline on the gasket that goes around the pump shaft at the top.

I have a fimco pump on a 25 gallon sprayer. It is a 2.1 gallon per min. pump. I took it out yesterday to use and it would not pump up, no pressure. Worked fine last year. I checked and the motor is running. Any suggestions as to what to try. Thanks I have a fimco pump for a 25 gallon sprayer, worked fine last year and now won’t pump. I took it apart and everything looks good? The motor runs fine, just wont pump. It did for a little this morning and then quit?

please help

ANSWER : At the end of the pump little square box with one pillpes head ,take it off and there is another screw in there turn it until it works,

How do you get the top off? – Roundup 2 Gallon Pro Garden Poly Tank Pump Sprayer (Roundup)
ANSWER : Howdy chloebuckski,This is a question that I get quite often. Here is the answer; with some pressure push the handle inward while turning counterclockwise. When you feel the handle sink in, keep turning and you’ve got it.Hope this helps,Coach Davecommunity.homedepot

Pump wont suction. Handle snaps back when pulled up
ANSWER : Top has a lock shaped like an X. It is difficult to turn but once the small protrusions at end of each arm of X snap out of locking holes the pump handle can be removed and the O-ring that produces the seal can be replaced into the grooved seat it fell off. To help keep it from happening again, just spray some water into the space around the handle shaft when the pumping action seems a bit strained due to the O-ring drying out.

I have a fimco pump on a 25 gallon sprayer. It is a 2.1 gallon per min. pump. I took it out yesterday to use and it would not pump up, no pressure. Worked fine last year. I checked and the motor is running. Any suggestions as to what to try. Thanks
ANSWER : Open up the pump, take out the check valve. wash in dish soap/hot water solution, scrub with old toothbrush, rinse off, reinstall & see if that makes a difference…