77 vac diagram
Senior User
Joined: Oct 2003
Posts: 191
Likes: 0
From: Portland Oregon
These vacuum diagrams are very difficult to find and almost impossible
to read. This was transition years for emissions stuff and engineering
was a little dicey.
There should be some links in the archives ...and if my memory serves me
right there is a website somewhere devoted to old vacuum systems.
The problem you run into is two fold: What passed as vac info was just
a "picture" of the different interconnected parts and not a schematic
indicating the purpose of the parts. Secondly there were a lot a changes for
different markets that may or may not have been incorporated in your truck
when new.
to read. This was transition years for emissions stuff and engineering
was a little dicey.
There should be some links in the archives ...and if my memory serves me
right there is a website somewhere devoted to old vacuum systems.
The problem you run into is two fold: What passed as vac info was just
a "picture" of the different interconnected parts and not a schematic
indicating the purpose of the parts. Secondly there were a lot a changes for
different markets that may or may not have been incorporated in your truck
when new.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by jj22ee
I am looking for a vac diagram for a 77 f25 with ac and 400 motor. thanks.
Here is the diagram:
http://i54.photobucket.com/albums/g9...cuum/77Vac.gif
New User
Joined: Jan 2008
Posts: 0
Likes: 24
To the users of posts #1,2 & 3.
Please read Post #20 of this thread in the FAQ thread fixed to the top of the forum.
https://www.ford-trucks.com/forums/1...ease-read.html
Please read Post #20 of this thread in the FAQ thread fixed to the top of the forum.
https://www.ford-trucks.com/forums/1...ease-read.html
New User
Joined: Jan 2008
Posts: 0
Likes: 24
JJ,
you didn't provide enough info in your post for me to send you a diagram.
I always need:
Engine
Transmission
Rear Axle
w/ or w/o AC
Location of Operation ( Canada/49 state/California
White Calibration sticker info if available. (located on passenger side valve cover)
you didn't provide enough info in your post for me to send you a diagram.
I always need:
Engine
Transmission
Rear Axle
w/ or w/o AC
Location of Operation ( Canada/49 state/California
White Calibration sticker info if available. (located on passenger side valve cover)
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by Mil1ion
To the users of posts #1,2 & 3.
Please read Post #20 of this thread in the FAQ thread fixed to the top of the forum.
https://www.ford-trucks.com/forums/1...ease-read.html
Please read Post #20 of this thread in the FAQ thread fixed to the top of the forum.
https://www.ford-trucks.com/forums/1...ease-read.html
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New User
Joined: Jan 2008
Posts: 0
Likes: 24
He never asked for an Air Conditioning vacuum diagram.
He asked for an engine related vacuum diagram for a truck that has AC.
He asked for an engine related vacuum diagram for a truck that has AC.
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