Power Angle Rams
Over the years Meyer has used a few different PA Ram (Power Angle) designs. In the beginning, the port in the PA Ram exited on the top of the PA Ram. This allowed the hose to pass through the Hose Guard (it just looks like a handle) and protect it from getting pinched when the blade was raised, or when it rode up the pile when stacking snow. The Hose Guard also makes contact on some EZ Classic Lift Frames, acting as a stop so the blade cannot go any higher. You can see the paint rubbed off in the pic below.
In the beginning, Meyer also used a 90 degree swivel fitting at each PA Ram and at the pump as well. The swivel fittings were eliminated in 1991 when the E-60 came out. Meyer switched to rigid 90 degree elbows on the PA Rams ("Tall" Elbows). On the pump, they used a Short, and a Tall rigid 90 degree Elbow. This eliminated the eminent fact that sooner or later the 90 degree swivel fittings would leak, and they served no real purpose. The rigid 90 degree fittings are more durable as well.
You can see the Short and Tall elbows on the PA Block on the left side of the E-60 above. They have Dust Caps/Dust Plugs on the Couplers to protect them when the hoses are not connected.
When the MDII Mount came out, Meyer went to a side exit port on the PA Rams. We still see side exit port PA Rams on Classic A Frames. This presents a new problem. The hoses must be routed through the Hose Guards, and it put serious kinks in the hoses as seen below.
The above A Frame should have top exit ports on the PA Rams to allow the hoses to be routed through the Hose Guards.
Meyer came out with the answer that would allow them to stock one less of each size (10" and 12") PA Rams. Cross Drilling.
The above PA Ram is a 10" PA Ram on a Meyer Drive Pro 6'8" plow A Frame. You can see the end of the PA Ram has been cross drilled so it will fit the Classic A Frames properly, as well as the EZ Plus/MDII A Frames. There is one catch, the new design has a port for SAE threads, so an adapter is necessary to connect it to older hoses with NPT threads. The above 10" PA Ram has a List Price of $189.53, and Meyer switched to 10" PA Rams on all units. For many years, all C Series plows used 12" PA Rams. The 12" PA Ram has a List Price of $175.09.
It did not take long for the aftermarket to step in and make a replacement.
Above is an aftermarket 10" PA Ram that is cross drilled, and has SAE threads just like the Genuine Meyer ones do. Adapter included.
We sell far more aftermarket PA Rams than we do Genuine Meyer. Is the Genuine Meyer "better" than aftermarket? Yes, in our opinion it is. It is also more expensive, which is why we sell far more aftermarket PA Rams.
So when it is time to replace your PA Rams, choose one that fits properly.
To measure your PA Ram, you
measure from weld to weld on the cylinder. The measurement may not be exact.
They are either close to 10" or close to 12", there is no other size used on Meyer plows.
IF you have a leaking PA Ram
and want to change the Packing Set, we recommend you try and get the Gland Nut
loose first. They often shatter when you try to loosen them. So before you spend
money on the Packing Set, get them apart, or make sure you can get them apart!
THIS is the best way to hold the PA Ram when trying to get the Gland (Packing) Nut loose.
More info on how to remove and replace Packing Sets
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