Author Topic: coolant overflow tank question  (Read 2913 times)

Jeff Wheless

  • Guest
coolant overflow tank question
« on: June 07, 2018, 09:05:21 PM »
I am replacing my coolant expansion tank on a 1999 Beaver Marquis.   

Upon inspection of the installation, it does not look like I have a coolant overflow tank.     My understanding is that the non-pressurized overflow tank should be connected to the line that is coming off the radiator cap throat.   If so, that line is just dumping to the ground.

Much appreciated if someone can confirm that the overflow tank should be connected to the line coming off the radiator cap throat.

By the way, the expansion tank replacement from Brassworks is amazing.   Great piece of kit that is priced between the plastic and metal tank options.   The plastic tanks are rather spendy these days and as well not sure if they are NOS or new manufacture.

Frank Bergamo

  • BAC Member
  • *
  • Posts: 283
  • Thanked: 73 times
Re: coolant overflow tank question
« Reply #1 on: June 07, 2018, 10:38:34 PM »
Jeff, yes, the overflow line connects to the recovery tank. Here is a link that may help.http://beaveramb.org/forum/index.php/topic,1170.msg7503.html#msg7503 Hope this helps.
Frank & Paulette Bergamo
2019-       : 2007 Marquis Topaz IV  C-15 600 HP Allison 4000
2014-2019: 2002 Marquis Emerald C-12 505 HP Allison 4000
2004-2014: 1986 Executive Diplomat 3208 250 HP Allison MT-643
Grand Junction, CO.

Jeff Wheless

  • Guest
Re: coolant overflow tank question
« Reply #2 on: June 07, 2018, 11:35:15 PM »
Thank you very much!

Pat Long

  • Guest
Re: coolant overflow tank question
« Reply #3 on: June 08, 2018, 01:54:38 AM »
My 2000 Marquis Amethyst did not have one so I had to install one