Announcement

Collapse
No announcement yet.

What's wrong with my pressure washer?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • What's wrong with my pressure washer?

    I have a RD80746 with an Annovi RMV2.3G30 pump. I pulled it out of storage, started it, and used it about 30 minutes with no issue. It ran out of gas, so I refilled, but when I went to start, I could barely pull the cord. By pulling the gun trigger and pulling the cord a little at a time, it eventually freed up. Very little water coming out of gun when engine not running. When the engine started, no pump pressure, and the engine died/stalled within a few seconds.

    So, following the guides here, I took the pump off, and noted the engine ran fine without the pump. I disassembled parts 3-11 and 37-42 on this drawing (unloader, and jet). Found one o-ring with some minor tears, and some very light scale, but didn't have replacement parts/orings so I just cleaned and oiled things up and reassembled. After reassembly, I got a LOT more water through the pump when not running. When I started, pressure was fine, when I released the trigger, I could feel the motor struggle again, but eventually some valve freed up and it sounded fine. Repeated 2-3 times and all seemed well. But after shutting down the engine and letting it set 2-3 minutes, then restarting, I was back to having plenty of flow through the pump when engine was off, but no additional pressure when the engine was running. Also, after just a few minutes of running, the pump housing was very hot to the touch (as it was before I did the rebuild).

    Sorry for the novella - What's wrong with my pressure washer? Thanks for any help.


  • #2
    Typically when the cord is hard to pull, the unloader valve is not unloading and causing the pressure to build up.

    Didn’t look at the parts diagram, but is your unloader separate from the pump or is it incorporated into the pump?

    Rick
    phoebe it is

    Comment


    • #3
      Thanks for the reply, Rick. I guess you'd say it's part of the pump. Below is a picture - that's not exactly my pump, but it's pretty close. Also, since the 'rebuild', it's not hard to pull, the only problem is that there's no pressure at all coming from the pump - just whatever pressure is coming in from the inlet water. The unloader is parts 1-15 in this diagram.

      Click image for larger version

Name:	pump.jpg
Views:	132
Size:	60.2 KB
ID:	753431

      Comment


      • #4
        I'm also concerned about how hot the pump casing is getting, after just a few minutes of running... what would cause this?

        Comment


        • #5
          When did you last check the pump oil level?
          "It's a table saw, do you know where your fingers are?" ? Bob D. 2006
          "?ǝɹɐ sɹǝƃuıɟ ɹnoʎ ǝɹǝɥʍ ʍouʞ noʎ op `ʍɐs ǝlqɐʇ ɐ s,ʇı"

          https://www.youtube.com/user/PowerToolInstitute
          http://www.cordlessworkshop.net
          https://www.youtube.com/channel/UC1p...qcZKHyrqKhikFA
          ----

          Comment


          • #6
            I know one thing, the manual is worthless. Has only the most basic information, and barely talks about the pump at all.
            Tried to attach a copy to this post but the file size exceeds the limit.

            So for anyone looking for a PDF copy, here is a link to it on TTI's website. Get a copy while it's available if you have this machine.

            https://manuals.ttigroupna.com/syste...4_eng.pdf?2017
            Last edited by Bob D.; 08-02-2022, 10:50 AM.
            "It's a table saw, do you know where your fingers are?" ? Bob D. 2006
            "?ǝɹɐ sɹǝƃuıɟ ɹnoʎ ǝɹǝɥʍ ʍouʞ noʎ op `ʍɐs ǝlqɐʇ ɐ s,ʇı"

            https://www.youtube.com/user/PowerToolInstitute
            http://www.cordlessworkshop.net
            https://www.youtube.com/channel/UC1p...qcZKHyrqKhikFA
            ----

            Comment


            • #7
              SOrry for my delayed responses - for some reason I'm not getting notifications, and I have a lot of irons in the fire right now.

              I wasn't aware it was necessary to add/change oil on the pump - there doesn't seem to be any obvious place to do that, and the manual for the pressure washer says nothing about this.

              Comment


              • #8
                That may be the case. My pump in my pressure washer which is not a RIDGID has oil.
                I thought they all did. What lubricates the pump then just water flowing through the pump?
                "It's a table saw, do you know where your fingers are?" ? Bob D. 2006
                "?ǝɹɐ sɹǝƃuıɟ ɹnoʎ ǝɹǝɥʍ ʍouʞ noʎ op `ʍɐs ǝlqɐʇ ɐ s,ʇı"

                https://www.youtube.com/user/PowerToolInstitute
                http://www.cordlessworkshop.net
                https://www.youtube.com/channel/UC1p...qcZKHyrqKhikFA
                ----

                Comment


                • #9
                  Originally posted by Bob D. View Post
                  That may be the case. My pump in my pressure washer which is not a RIDGID has oil.
                  I thought they all did. What lubricates the pump then just water flowing through the pump?
                  Maybe. Don't they usually recommend that you not run them dry?

                  Comment

                  Working...
                  X