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Topic: 99 U320 part identification please (Read 941 times) previous topic - next topic

99 U320 part identification please

When I lift the engine cover.... there is a black metal box with a radiator like cap on it and what appears to be a glass viewing place near the bottom.... this box is just to the left of the plastic radiator overflow resevoir.

My question is:  What is it and what should it contain?  I'm hoping it is for radiator coolant as I just put some into it.. but then noticed that there is some wording about having a professional maintain something and a reference to what sounds like A/C refrigerant...
99 U320 40ft DGFE

Re: 99 U320 part identification please

Reply #1 –
That is the metal coolant reservoir - but it should plumb out to a white overflow that you put coolant into...
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: 99 U320 part identification please

Reply #2 –
Quote from: orrenb –
When I lift the engine cover.... there is a black metal box with a radiator like cap on it and what appears to be a glass viewing place near the bottom.... this box is just to the left of the plastic radiator overflow resevoir.

My question is:  What is it and what should it contain?  I'm hoping it is for radiator coolant as I just put some into it.. but then noticed that there is some wording about having a professional maintain something and a reference to what sounds like A/C refrigerant...

Dave is correct. 

I made the mistake of opening the pressure cap on this reservoir and it just kept on leaking after that -- even a new cap did not stop the leak.  It persisted until MOT worked their magic on it.  One of their techs used some very fine sandpaper and a flat sanding block to remove what were minute nicks in the brass top of the neck.  It has not leaked since then.  Hopefully, your results will be better.

I now add coolant to the white plastic overflow container.
George Stoltz.  Retired from full-time living in a great Foretravel and now are back to living in a traditional sticks and bricks in Florida.

Re: 99 U320 part identification please

Reply #3 –
Thanks... that makes me feel better... I thought I had put coolant into some kind of A/C reservoir .... The plastic overflow thing had coolant level right at the "cold" point which I thought would be correct... but my Silverleaf keeps reporting low coolant level.... and when I took the cap off the black metal box I couldn't feel any liquid in it... so I added about 3/4 gallon of 50/50 coolant...  I won't be starting the engine for a couple more days... so I won't know if the Silverleaf reports low coolant again for a while... It's a lot easier to add to the black box than the overflow container... but I'll start using the overflow container next time... 

Thanks again, OB
99 U320 40ft DGFE

Re: 99 U320 part identification please

Reply #4 –
Check the tube between the plastic overflow tank and the black tank....it may be plugged. The two tanks should work together to keep the coolant at the proper level.
Gary & Sharon Karnes
1999 295 WTFE 3600