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I had a coolant leak recently, leaking out of the bottom of the hose that connects the expansion tank to the radiator. On inspection I found this rubber part with the right hand side hole over the tank outlet and between it and the hose, and the left hand side just freely moving about somewhat under the tank. Some prodding about for a closer look made the tear in the right hand side and the part came free.

With the part free, I could move the hose tight against the tank and the leak has gone away BUT this part is clearly there for a reason - what is it? How should it be installed?

Figure 75-13 on page 16 of 75-00-00 suggests that it goes over the hose but (what's left of) my part doesn't look much like the diagram.

Any help identifying what this part is, and how to install it (and do I need it) appreciated,

Thanks,

Paul

 

7836_1_IMG_20200315_095832.jpg (You do not have access to download this file.)
  • Re: Expansion tank rubber part question

    by » 5 months ago


    Paul

    This is part # 860 826 and is called '' rubber plate ''. It is there to prevent the bottom of the expansion tank  from rubbing on crankcase . The big hole goes AROUND the 1'' hose going to the rad ( not between the hose and the tank)

    The small  hole will fit the same on the opposite side.(smaller hose)

    Often, the expansion  tank is well above the crankcase and the 'rubber plate' is not usefull or needed

     

     


    Thank you said by: RotaxOwner Admin

  • Re: Expansion tank rubber part question

    by » 5 months ago


    Ah, thank you so much for the reply, now it makes sense. From the diagram I was interpreting it as being on the hose but this makes much more sense. I'll order a replacement for the weekend and then I can see if I need it or not.

     

    Paul


  • Re: Expansion tank rubber part question

    by » 4 months ago


    My "rubber plate" broke off at the larger attachment point.  Looking under my tank, I realized that the hoses hold it up so that the bottom of tank is not close to rubbing on anything.  I then just cut the rubber thing off at the back and removed it entirely.


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