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Scim · 08-30-2022, 04:15 PM

Anyone have a vacuum diagram for a 2013 32CA with a F53 chassis? I found a back vacuum hose disconnected after removing the dog house. The hose originates forward of the right passenger tire on a canister and runs up the right side of the engine head area, where it is disconnected. The is also a red vacuum hose that originates at the same canister and terminates into the rear side of the intake manifold. Both the red and black vacuum hoses were hitting the engine fan blade and is what made me remove the dog house initially. I've contacted both Ford and Tiffin with no success in locating a vacuum diagram or a good lead on where the line goes. Any help is appreciated, I've spent many hours looking for where the hose should run.

F4Gary · 08-30-2022, 05:40 PM

Vacuum hose to the HVAC controls maybe?

Argosy · 08-30-2022, 06:37 PM

What's the canister look like?

luvlabs · 08-31-2022, 06:52 AM

This is chassis part and it is better answered by Ford. Sounds like the gas tank evaporative canister.

Sweetbriar · 08-31-2022, 07:47 AM

I'm pretty sure what you are dealing with is the dash HVAC control vacuum lines. The red line (Ford installed) is the feed to vacuum reservoir on the passenger side and the black hose (Tiffin installed) leads from it to the dash HVAC controls. Where the hose enters or passes thru the firewall to reach the control panel is anyone's guess as Tiffin cut the hole on the assembly line. My coach has one house builder cut hole for all the stuff they installed that goes to the back side of the dash which includes the vacuum line.

If the lines are cut easy to tell as your dash vents will fail safe to windshield defrost position.

Scim · 08-31-2022, 10:21 AM

Ford originally stated it ran to the HVAC controls, but later said I needed to speak with Tiffin about it since each manufacture routes them differently. The Tiffin HVAC tech then said the HVAC controls are all cable driven for this year model and sent me back to Ford. Ford then recommend I go to a local dealership to see if they could print the diagram from a service manual. My local Ford dealer service departments have all stated they don't work on F53's.

Scim · 08-31-2022, 10:29 AM

The HVAC controls are operating normally and changes from floor, vent, defrost without issue (not stuck in defrost mode).

F4Gary · 08-31-2022, 10:53 AM

https://fordcommercialvehiclecenter.com/

Maybe one of these places will email you a copy.

Scim · 08-31-2022, 12:49 PM

Thanks for the feedback everyone. I'm going to contact Ford Commercial and give that a try.

Scim · 08-31-2022, 12:52 PM

Quote:

Originally Posted by Argosy

What's the canister look like?

It's about 4 x 8 and somewhat round. It may be more of an vacuum accumulator/revisor. It mounts to the chassis bumper just forward of the right front tire. Only has a red and black vacuum lines attached.

code2e · 08-31-2022, 01:24 PM

There should be a label on the side of your engine valve cover that has your vacuum diagram on it. Usually on the driver's side. Visible above the left front tire towards the rear of the valve cover. Take a rag to wipe it clean and your phone to take a picture of it to use inside later.

Scim · 09-01-2022, 04:34 AM

Quote:

Originally Posted by code2e

There should be a label on the side of your engine valve cover that has your vacuum diagram on it. Usually on the driver's side. Visible above the left front tire towards the rear of the valve cover. Take a rag to wipe it clean and your phone to take a picture of it to use inside later.

Thanks, I'll double check that valve cover

Daltongang · 02-03-2023, 09:11 PM

I found the black vacuum lines protective cover hanging from under the chassis near the vacuum canister reservoir. Problem is only a short 1 inch piece of vacuum line is attached to the canister. I will need to get new line but I have no idea where this black vacuum line attaches at the other end. Any help would be greatly appreciated.

153stars · 02-06-2023, 09:39 AM

I tried to Google it and hit a dead end too many results not even f53 but went beyond time I go down the rabbit hole. If I remember right AutoZone has lots of diagrams if you sign up not sure if F53 is in database.