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brad miura 09-05-2018 12:58 PM

yanmar 2gm20f
hi all . new to this page. we recently installed a yanmar 2gm20f in our 31ft miura. i noticed that there is no plastic expansion tank. i would just like to understand the best position to mount one and why and also does the plastic tank have a pipe to the bottom of it?

aa3jy 09-05-2018 03:37 PM

Re: yanmar 2gm20f
Recovery bottles do not rely on gravity, which makes it unnecessary to mount them above the pressure cap. Instead, they should be installed so that the bottle’s cold-level mark is no higher than the pressure cap. With this approach it is possible to remove the pressure cap for inspection purposes without coolant flowing from the recovery bottle and out the pressure-cap filler neck.

Probably about an inch off the bottom of the recovery bottle will suffice for proper flow.

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