Vacuum Filling Coolant (1993 7.3 IDI)....possible Concerns??

[OkieDieselMan]

I just finished installing a Baldwin Coolant Filter Set-Up on my 1993 F250HD with the 7.3 N/A (non-Turbo) Engine and am getting ready to "fill" the Cooling System with Coolant and "purge" any trapped air, etc. I am planning to use an AirLift 550000 Vacuum Fill Tool to fill the Cooling System.....This will be my 1st time using this type of Tool and and have some "concerns" / Questions.:

1) As I understand, I will be pulling a 25psi "vacuum" on the System (i.e., which "collapses" the Hoses...and "other" things" in the System) and am wondering how the Baldwin Coolant Filter will handle this vacuum level? I can see the Filter being tested at the Factory for "burst Pressure," but didn't know if a 25psi (negative Pressure) will damage, or collapse the Coolant Filter's internal media, etc.?

2) My Lower Radiator Hose is a Gates # 21405 (with a Steel inner Coil Spring inside of it). Will this 25psi (negative Pressure) possibly damage, or collapse the "Spring" inside of the Hose? I realize that the Hose (after being "collapsed") will rebound back to it's original Shape, but the Spring (once collapsed) will stay collapsed - causing issues.....Any worries/comments here about the Spring?

3) Any overall concerns about a 1993 7.3 IDI Engine & Cooling System handling a 25psi negative pressure (Vacuum) for this type of Coolant Fill Procedure? Didn't know if this is a "no-no" for this year of 7.3 (i.e., for Gaskets, Seals, etc.), or if there are no worries??

Since I've never used a Vacuum Fill System before, I would really appreciate any Comments from other 7.3 IDI Owners that have experience with Vacuum Filling the Coolant System.

Thanks in advance.

Harold

 

[Clb]

Seems like alot of effort to go through when these usually purge rather easily..

 

[Black dawg]

It will be fine. Just remember that it still might not be completely full, but usually very close to.

 

[DirtyWood]

I installed a flush tee in one of the lines to the heater core and it's very handy for burping air from the system.

 

[IDIBRONCO]

Since you're concerned, can you use less vacuum? Say maybe 15" or even 10"?

 

[DougBoy66]

I used a very similar system to fill mine. The vacuum helps to avoid air pockets being trapped anywhere in the coolant system. I works really well

 

[DougBoy66]

You must be registered for see images attach

Here is where I was at before I started pulling in the antifreeze

 

[mf7lakes]

It worked great -- no air burping after refill -- lower hose with coil spring was A-OK

 

[OkieDieselMan]

Thanks for all of the great info.!

 

[OkieDieselMan]

I installed a flush tee in one of the lines to the heater core and it's very handy for burping air from the system.

Great idea!!!!! Thanks!

 

[yARIC008]

Not sure how you plan on pulling a 25 psi vacuum when on earth, lol. But let us know how it goes… I’ve always had luck just filling it normally. Maybe I got trapped air but engine has been running for 20 years with no noticeable issues.

 

[Nero]

I just did a coolant flush on a 6.9 recently. Took about 6 gallons between engine and overflow. I got 5 in, drove it around the block to open the thermostat, then put the last gallon in.

 

[IDIBRONCO]

Not sure how you plan on pulling a 25 psi vacuum when on earth, lol.

Or anywhere for that matter!

 

[Indadesert]

The things people do to complicate life. The cooling system works just fine stock form. Heck I can run mine 1/2 empty in 120deg head with thread on towing 10k up hill and it only hits 220. Full of coolant in the winter I have a hard time hitting 160.

 

[Nero]

The things people do to complicate life. The cooling system works just fine stock form. Heck I can run mine 1/2 empty in 120deg head with thread on towing 10k up hill and it only hits 220. Full of coolant in the winter I have a hard time hitting 160.

I'm gonna call major bullsh*it.