Meyer Snow Plow Pump Coil & Valve Assemblies
Updated 8-28-09


Since I am asked often, and for the Forums, it will be helpful to have this here, I am adding this picture of a Meyer snow plow pump coil and valve assembly. Pictured below is a B Coil, and an A Valve. Further down the page we discuss Meyer C Valves.

When troubleshooting Meyer snowplows it is often said to "check the O rings" on the valve. It is the O rings on the end and journals of the valve. The other O ring closest to the hex nut is to seal the valve when it is installed. Which by the way, makes the seal. No reason to try and tighten the valve too much. It won't help.

Here is a Meyer Snow Plow Pump (E-47, E-57, E-60) C Valve taken apart. Most do come apart. The snap ring is hard to get off sometimes, but it is possible. I had to make my own tips for the pliers to get this apart. The tolerance inside the bore of the valve (with the stud on top) is very close to the diameter of  the piston that rides up and down inside of it, to open and close the valve. When the C Valve gets "swollen" (see below), it allows the piston to tilt in the bore as it rides up and down. Sometimes it sticks, sometimes it is fine, for a while at least. It will fail, sooner or later, but it is usually sooner. I should add that none of these parts are available, so taking it apart is usually a waste of time unless it is just gummed up.

Why do C Valves swell? Good question, but you might not like the answer.

How does the C Valve get swollen? Only one way, hitting something way to hard, way too fast. The fluid in the extended Angle Cylinder goes through the Crossover Relief Valve and then travels to the other Angle Ram, extending it. It helps absorb the hit. The orifices in the Crossover Valve are small, and the fluid can't get through fast enough on a hard, fast hit, so the fluid spikes up into the C Valve, swelling it. It only takes one time to do it. There is no other way for it to happen. It is a pretty common problem with commercial use plows that have numerous drivers, or drivers in a hurry to get the job done, or drivers that ram frozen snow banks trying to move them. Speed + Plowing = Failure/Damage. It's that simple. Below are two photos of some swollen C Valves. The Red Arrows are pointing to the bases, where you can see the bulge starting. The Valve in the center is an new aftermarket one, but you can see how uniform the diameter of it is. You can click on either photo for a close up look. The Purple arrows is pointing to the small orifices in the Crossover Relief Valve that the fluid must flow through to get from one Angle Ram to the other.



Meyer C Valve fits E-47, E-57, and E-60 Meyer plow pumps

Buy a NEW

Meyer C Valve $64.99

Made in the USA. Replaces OEM Part#15381

Ships Priority Mail from New Jersey

Meyer plow pump C Coil fits E-47, E-57, and E-60 plow pumps

Buy a NEW

Meyer C Coil $24.99

Made in the USA.

Ships Priority Mail from New Jersey


                    Rebuilding A Meyer E-47 - Step By Step DVD


Rebuilding A Meyer E-47 - Step By Step DVD

We chose to put these videos on a DATA DVD. It MUST be played on a computer. It will not play in a conventional DVD player hooked up to a TV. The reason we chose this route is because at just over 5.5 hours in length, it would require 3 DVDs to fit it all...


Manufacturer: Smith Brothers Services, LLC


More info on Meyer Plows:

Changing Hydraulic Fluid Plow Pins
Meyer® E-47 Wiring Diagram Plow Tech
Meyer Plow Pivot Pin Repair Adding a 3rd Trip Spring
Meyer Plow Pumps Coil And Valve
Meyer E-47 Pump Pics Meyer Plow A Frame & Sector Repair


Additional Reading


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Changing Hydraulic Fluid  JC Whitney - Truck parts & accessories, etc.
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