TheSamba.com :: View topic - Air conditioning tunnel reassembly problem

Mon Nov 01, 2021 8:50 am

Hello,
on a Syncro which is in Europe, I have to reassemble the air conditioning tunnel which is on the ceiling of the bus.

I had the bus with the tunnel dismantled, I have no idea how it should be reassembled.

Is there any documentation that explains this in detail?

Answers in French from our Canadian friends are also welcome, because my mother tongue is French.

Thank you all for your help.

Fred.

Mon Nov 01, 2021 2:22 pm

sorry to be "that guy", but it is covered the Bentley service manual.
good luck :)

Mon Nov 01, 2021 3:35 pm

These ducts are famous for broken plastic bits.
VW had a recall on them but the recall was a failure.

Many in frustration have removed the duct work to the front and declare ithat the airflow is "better without it".

I've found it to be quite the opposite!
My A/C comfort level improved dramatically once I installed the ducts.

I made a thread on how I fixed the duct work for good!

I'll locate it and post a link.

Dave

Mon Nov 01, 2021 4:07 pm

Link

https://www.thesamba.com/vw/forum/viewtopic.php?p=9687091&highlight=#9687091

Mon Nov 01, 2021 10:08 pm

Many thanks Dave !

Mon Nov 01, 2021 10:29 pm

borninabus wrote: sorry to be "that guy", but it is covered the Bentley service manual.
good luck :)

Hello,
i have bentley, but not very comfortable with english, and in this book i have not had the answers to my questions.

Thanks.

Mon Nov 01, 2021 10:31 pm

djkeev wrote: Link

https://www.thesamba.com/vw/forum/viewtopic.php?p=9687091&highlight=#9687091

Hello Dave,
your link is great, very well explained.

Another question, what year is the bus? Have you found the electrical diagram of this air conditioning model?

Thanks.

Mon Nov 01, 2021 11:31 pm

You have a syncro which for Europe is 1985-1992? The States 1986-1991

If you have an 85 or 86 you won't find a wiring diagram.
I made one the best I could and it is in the A/C system rebuild thread.

For late 86-91 they are in the Bentley but are not 100% accurate.
There are threads on the inaccuracy in this forum.

What year is your Syncro?

Mon Nov 01, 2021 11:42 pm

Hello Dave,
my syncro is from 1989, but no diagrams found match my vehicle.

However, some photos of the technical part which is on the rear left correspond to my bus.

But no diagrams match, it's surprising.

I also have the air conditioning controls which are on the dashboard and not on the upper part.

Thanks.

Mon Nov 01, 2021 11:51 pm

The older units had controls on the upper air distribution but the Evaporator was also on the ceiling behind the front seats.

Any of the newer systems have dash controls. Very early new are to the left of the steering wheel (left hand drive) newer ones to the right of the heater controls (again Left hand drive)

Newer VW A/C has the evaporator above the rear window.

Keep in mind that VW wasn't the only provider of A/C units, Behr was also a major provider.

Some photos of your A/C system would be helpful to help you.

It seems like VW changed their A/C wiring almost yearly and paid little attention to model year breaks while making the changes.

Dave

Mon Nov 01, 2021 11:55 pm

Hello Dave,
here is the syncro overhaul web page which had an engine fire, there are pictures of the air conditioning system.

https://www.type17.net/type17_infos/selection_T3_K_004_074.html

Thank you.

Tue Nov 02, 2021 12:01 am

Tue Nov 02, 2021 12:09 am

You have VW's A/C

You might consider rewiring it because of fire potential.......

https://www.thesamba.com/vw/forum/viewtopic.php?t=757441

But except for proper wire color indication that wiring diagram is in your Bentley.

The A/C has its own separate pages for A/C wiring.
The A/C is a stand alone system.

Tue Nov 02, 2021 12:25 am

Here is my thread on my 90.

It is essentially the same as your 89.

https://www.thesamba.com/vw/forum/viewtopic.php?t=748346

Dave

Tue Nov 02, 2021 12:39 am

Hello Dave,
yes, I am reading everything, and also the pages indicated in links.

Thank you.

Wed Nov 03, 2021 11:35 pm

Here are some news.

After repair of the elements, the tunnel was reassembled

Use of Gowesty backing plates.

Front part repair

Reassembly at all.

Adding washers to reinforce

The final

But I have a problem to connect to the compressor, the pipe which comes from the evaporator.
Here is the end of the hose.

Here is what I need to mount on the compressor

Here is the intermediate part that I ordered, but not possible to make the connection

And this is how it looks on the engine

Someone can help me ?

Thanks.

Thu Nov 04, 2021 2:25 am

Sorry but I don't see your problem.

Both pipes are held onto the compressor by the one clamp you show.

I don't have any photo of the connection for I changed my compressor, hoses and hose ends abandoning VW's original design.

Dave

Thu Nov 04, 2021 2:30 am

Hello,
very difficult to explain like that, especially since my English is bad and I especially have to use an internet translator.

Thank you.

Thu Nov 04, 2021 3:21 am

Who has an 87 or newer 2.1 with A/C they can take photos of the A/C connections at the compressor?

That should be helpful.

Dave

Thu Nov 04, 2021 6:43 am

Here you go.

These are from my '87 syncro. You got me just as I am removing the engine so one of the a/c fittings is unscrewed.