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Discouraged Dennis sings the blues!

Monday, April 1, 2013

Recently I received a request from Dennis for information regarding a Tennant Model 8410. The rear squeegee holder is all “bent-up” and mis-aligned. Dennis asked me to tell him what all of his options were.

He sounded very discouraged but I encouraged him not to be. “We will get your sweeper/scrubber fixed-up in a jiffy.”

First of all, the Tennant Model 8410 is among the largest sweeper/scrubbers in the cleaning industry. It was first introduced in 2003. Its forerunner was the 8400, which went in production in 1998. These machines have been around for some time. It weighs in at a hefty 6,900 pounds and has a length of about 10 feet. So, the point is that sometimes when the machine is cornered into a tight place the rear squeegee can get easily caught onto something and get substantially damaged.

To determine the damage, it must be removed from the machine. Once removed, a better evaluation can be made. So, let’s go ahead and remove the entire squeegee assembly.

To remove the rear squeegee assembly:

  1. Start the engine and lower the rear squeegee. Shut off the engine. Set the parking brake.
  2. Raise the rear of the machine using a floor jack. Now set blocks to raise the machine. These will not slip or slide as a jack stand may.
  3. Remove all the hardware (i.e. screws, nuts, spacers, etc.) from the rear squeegee lift cable where it attaches to the center of the squeegee frame.
  4. Remove the vacuum hose from the pipe on the frame.
  5. Remove the two tension springs on either side where the link rods connect to each side of the frame.
  6. Remove all the hardware from the four link rods (two on each side) where they connect to the squeegee pivot brackets.
  7. The squeegee assembly can now be removed from the machine.

As long as the squeegee frame is not bent-up too severely, it can be straightened. The squeegee assembly must be completely dismantled removing all hardware, squeegee blades, bushings, etc. Many times I have seen frames heated up with a torch and hammered back. This works sometimes and sometimes it does not.

Here is your second option: If straightening isn’t working, it is time to buy a new frame. When you get the new frame all of the parts from your old frame have to be transferred to the new frame. At this point, you should have already determined if other parts needed to be replaced as well (i.e. the front and rear squeegee blades). Remember to replace in pairs. You will want to look at the squeegee bands that hold on the blades too.

If the squeegee frame is bent up to a point of no return and a frame is not for you. Then the entire squeegee assembly can always be purchased. The squeegee assembly comes pre-assembled and ready-to-go. All that needs to be done is installed and adjusted. One has to level the assembly as well so the machine operates properly without streaks.

Email me if there is a squeegee assembly in your future. There are after-market assemblies that can save you a bunch of money. I will need your machine model number at best and perhaps your serial number.

Read next month and find out what Dennis decides to do.

As always, I thank you for reading.

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