Annovi Reverberi North America | When Quality Matters
Annovi Reverberi AR RGX series repair and maintenance video the on models RGX2250HN and RGX1550HN piston triplex plunger pumps. In this video, the AR North America technical team will be showing you do repair and maintenance step by step.
0:20 Discharge Valves
1:57 Inlet Valves
3:49 Water Seals & Piston Guides
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This video will cover how to replace the Inlet and discharge valves along with the pistons, guides and seals on any Annovi Reverberi AR RGX series pump.
These are the tools used in the video to repair the machine
Here are the kits and their parts numbers needed to service the pump
To replace the 3 discharge valves on the top of this pump, remove the valve caps on the manifold with a 24mm socket
There are 6 valves in total, the other 3 require the head bolts to be taken off
Next, using a pair of needle nose or valve pliers remove the valves by grabbing the plastic valve cage while twisting and pulling straight out
Make sure to clean the thread sealer off of the plugs and the ports for your valves to prevent damage when reassembling it
Put in the new valves and use something that will not damage the inside of your pump to properly seat them
Apply a thin layer of thread sealer all the way around the threads when reinstalling the valve caps
Make sure to torque the caps to 531 Inch pounds or 44 foot pounds before the adhesive dries
Never use the airgun when re-assembling your machine because this can lead to injury to you or damage to your pump
To access the remaining valves, pistons, guides and their seals start by removing the 8 head bolts with a 8 MM allen socket.
The inlet manifold should come off with the head bolts
There are several ways to remove the inlet valves with the first being a 12MM bolt, whos threads match up with the valves
Next is a pair of valve pliers
Third is the reverse pliers, where you twist and pull to take the valve out.
Use a pick to take out the old o rings near the bottoms of the valves
Watch out for this small o ring that may fall out, without it. Your pump will end up leaking.
Put in the new o rings, followed by the new inlet valve
To get to the pistons, seals and their guides, we need to remove the head of the pump
The best way to remove the it is to support the bottom while tapping the top with a soft face mallet.
Do this until there is enough room to evenly pry off the head with 2 screwdrivers on opposite side of the pump
Be careful not to apply too much pressure to one side of the head because this can crack the ceramic pistons
Once the manifold is off there will be parts either on the pistons or still in the head of the machine.
To take out parts still in the head you can use a rear piston guide extractor, which we sell on our website.
After that, Take out the front piston guide by hand
A small flathead screwdriver can be used to pry out the high pressure seal if it can’t be taken out with your fingers.
To remove parts off of the pistons start by using a wrench or your hand to rotate the crankshaft, this will push the parts towards the end of the piston making them easier to twist off.
The first item to go into the manifold will be the head rings with the flat side facing down
Next comes the high pressure seal, its concave side should fit over the support ring
New seals are tough to fit in, make sure to work them in at an angle and to only use your hands
The brown backup ring should then fit on top of that
The front piston guide comes next with the angled side going into the head
To put the rear piston guide in start by replacing the o ring on the outside, then place in the low pressure seal with the flat side first into the guide
Put a small amount of grease onto the support ring so that it stays in the seal when putting in the head
When properly seated it should click into place
To replace the pistons, remove the piston bolt using a 10mm socket.
Again, make sure to clean off any thread sealant from the bolts before putting them back in
Now you can replace the brass plate, followed by the new piston
Add the copper washer to the piston bolt along with applying a thin layer of thread sealer all the way around the threads before retightening them
Torque the piston bolt to 62 inch pounds
Now we can place the manifold back onto the pistons and reapply the head bolts
To properly put on the manifold turn the crankshaft so that the outer pistons are even
This helps with pushing the head back on squarely
New seals may be tight, so you can use a soft faced hammer to evenly tap it into place while supporting it
These head bolts should be torqued to 442 inch pounds or 37 foot pounds