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Make sure no cavitation before replacing the HP, LP seals. https://www.catpumps.com/310-service-videos < watch the videos.

I have never seen this before on a 530 cat pump, where the plunger rod is discolored like that, it was a little difficult to get the plunger off, where as they usually just slide right off. The plunger retainer o-ring and backup ring were in good shape, but it is obvious it looks like water was...

Randy, Do you have a link to the Mars/MEI Talos validator?

TSB from cat pumps about what oil to use, found it interesting that it says "In standard water applications lubrication is not required".

Check your hp, lp seals, your oil looks a little milky, could be water in the crankcase, bad seals can cause that, and also wouldn't allow you to adjust your pressure higher, check the valves also. If the pump is allowed to run after the low-pressure seals and high-pressure seals have become...

The seals in the pump head, looks like a 310 or 530 cat pump, go to catpumps.com, service and training if you never changed them before. Also check the head for cavitation.

Randy, on this forum, PM him, he will take care of you.

Is it all the LP functions? On all bays or just one?

Ferrule first, then the fitting. You can see how there used on youtube. I have a parkrimp 1, and a hose cutoff machine since 2000, always kept 500ft of 3/8 hp hose around also. I think that setup cost around $3500.00 back then, probably double that now. Also use the pushlock assembly tool thats...

And they are very heavy for low pressure hose that you would use for the foam brush, it's way overkill. Use something like https://www.kleen-ritecorp.com/search.aspx?searchterm=PLF204 < fittings https://www.kleen-ritecorp.com/search.aspx?searchterm=GYI06BL < hose You don't even have to crimp...

You won't be able to crimp that fitting with a ferrule crimper.

It's easy to login to, but if you don't do it every 25 days your account will become inactive, thats when it is a pita, you have to call them, and sometime it can be a process just to get logged back in.

There is no way to fix that, so yes replace it.

I know the vinyl tubing gets hard after a short period of time, does the excelon tubing stay soft? Do you drill holes in the conduit?

I PM'd you, check your mail.

A picture would help, don't know why there would be 3-20 amp fuses for one motor?

Are you talking about at the main panel box?

I use the dema 0473P.3 and have had it stick both open and closed, it is mounted vertically though, and I believe they are supposed to be mounted horizontally only.

How many bays?, what functions will you have to the bays? Pictures of the meter boxes in the bays, The more information you give, the easier it may be for others to help if they know exactly what you asking for.

Where do you think the metal shavings came from?, I would look into that. Always keep a new head ready to go.