CAC Air Pipe Connector

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CAC Air Pipe Connector

January 27, 2019, 05:12:36 pm

I was checking for potential leaks in my charged air cooler system and discovered that this connector is close to failing. It's the one that connects the CAC to the air pipe (then to engine intake). One of the automotive A/C hoses has been rubbing on it. Has anyone replaced one of these? I was thinking I would just get a properly sized (3.5") section of silicone hose and call it a day. This one, however, is reinforced with a coiled spring. Thanks.

Re: CAC Air Pipe Connector

Reply #1 – January 27, 2019, 05:36:24 pm

Pretty common hose you should be bake to get a suitable replacement from any heavy duty truck shop. Just dont say it's on a motorhome.

Re: CAC Air Pipe Connector

Reply #2 – January 27, 2019, 05:37:54 pm

Quote from: its toby – January 27, 2019, 05:36:24 pm

Pretty common hose you should be bake to get a suitable replacement from any heavy duty truck shop. Just dont say it's on a motorhome.

Bada Bing, a winner!!

Re: CAC Air Pipe Connector

Reply #3 – January 27, 2019, 06:13:18 pm

Try silicone hose.com.

Re: CAC Air Pipe Connector

Reply #4 – January 27, 2019, 06:26:33 pm

Those are made by Flexfab the one for the M-11 is 7728 but ours is 4" X 7 1/2" Check there site for a 3 1/2"

Mike

Re: CAC Air Pipe Connector

Reply #5 – January 27, 2019, 06:36:17 pm

Check the bottom mounting tabs on the CAC,they are aluminum and easily break,had to have mine rewelded.

Re: CAC Air Pipe Connector

Reply #6 – January 27, 2019, 07:32:37 pm

You can put a length of duct tape around the holes to get you by till new ones found. Use a clamp to hold tape over holes, does not need to be tightened too much

Pressure is only up to 35lbs.
JohnH

Re: CAC Air Pipe Connector

Reply #7 – January 27, 2019, 07:40:56 pm

Thanks for the replies. I'm going to try and find the exact flexfab replacement. I'm at home so no emergent condition. FFR, the CAC end is 4" bu the end I need is actually the intake end which is 3.5". I'll check those tabs; thanks for the tip.
jort

Re: CAC Air Pipe Connector

Reply #8 – January 27, 2019, 08:16:44 pm

Quote from: joodyo – January 27, 2019, 05:12:36 pm

I was checking for potential leaks in my charged air cooler system and discovered that this connector is close to failing. It's the one that connects the CAC to the air pipe (then to engine intake). One of the automotive A/C hoses has been rubbing on it. Has anyone replaced one of these? I was thinking I would just get a properly sized (3.5") section of silicone hose and call it a day. This one, however, is reinforced with a coiled spring. Thanks.

Hard to find. I got one at Summit racing.com
Cheap,and fast delivery.
Chris

Re: CAC Air Pipe Connector

Reply #9 – January 28, 2019, 08:55:11 am

joodyo, while you have the hose off you may want to pressure up the CAC to check for holes. I put 15 lb of pressure on mine and it reminded me of DW colander. Just my 2c worth
Atlas radiator has them for a small measly sum not wither mentioning but 8 week lead time!
Chris

Re: CAC Air Pipe Connector

Reply #10 – January 28, 2019, 09:21:08 am

Grace, do you happen to have the number for the Summit product? I was on their site yesterday and didn't see thiis size. thanks.

Re: CAC Air Pipe Connector

Reply #11 – January 28, 2019, 10:30:44 am

Quote

you may want to pressure up the CAC to check for holes

How would I do that? Chris. Some kind of fitting on the pipe? Thanks.

Re: CAC Air Pipe Connector

Reply #12 – January 28, 2019, 12:17:23 pm

I'm sure Foretravel has them in stock.

Re: CAC Air Pipe Connector

Reply #13 – January 28, 2019, 12:28:36 pm

John, when I had my CAC off years ago to repair holes in it I tested mine to 45 lbs over night and it was solid. I used 2 pieces of 3/4"plywood with a hole in centre of each one, I put a gauge at one end and air fitting on other then pumped air in till reading 45.The ply pieces were held in place with large c clamps, and forgot to say I put a piece of thin rubber gasket against faces of CAC. It worked great.
Rudimentary set up but worked fine.
Any hole can be filled with Devcon aluminum ,but the hole has to be cleaned well and to make sure NO putty goes into galleries, I flushed the CAC out with a hose for over an hour to remove as much Carbon deposit as possible and hopefully flush out any crap inside.It has been I think 5 yrs since I did mine and boost is still 100%leak free. I get up to 32lbs pressure due to having the Banks Stinger, the coach flies up hills and good mpg.
JohnH

Re: CAC Air Pipe Connector

Reply #14 – January 28, 2019, 12:38:15 pm

Quote from: joodyo – January 28, 2019, 09:21:08 am

Grace, do you happen to have the number for the Summit product? I was on their site yesterday and didn't see thiis size. thanks.

In Maui.Don't have info with. Just call them. High quality made in Australia.I also found one on ebay. Was $80.00 so I passed.
Chris

Re: CAC Air Pipe Connector

Reply #15 – January 28, 2019, 09:48:20 pm

It is called a charge air cooler connector

CAC Hoses for Diesel - Charge Air Cooler Hose | Global Hose & Industrial...
Truckpro, Fleetpride. Try a local hose rubber products supplier.. common item

Re: CAC Air Pipe Connector

Reply #16 – January 28, 2019, 10:08:51 pm

I bought some for Foretravel for mine and I didn't think they were that expensive, of course I am used to buying/selling aircraft parts. I bought enough to replace all of mine, but only replaced the one that was damaged to get home. The one on the turbo was hard and fractured.

Re: CAC Air Pipe Connector

Reply #17 – January 28, 2019, 10:26:41 pm

Joodyo, I used the rubber 4" plumbing connectors attached to 4"pvc with cap glued on drilled and tapped cap to fit pipe thread
screwed in pipe with gauge and air fitting. If you find holes you can also use J B Weld. I bought some of the Davcon product but wound up using JB weld. I just found too many holed and the bottom vane was deteriorated on one end beyond repair so I bit the bullet and bought a new one.
If I was doing it again I would see if Atlas would sell me the core and I would cut the ends off the old one and weld (have welded) to the new core or see if Atlas would use my old ends for a little less money. They told me they molded the ends and welded them on to the new core. Just a thought!
Hope yours is good
On another note- I purchased 2-4" CAC hosed with clamps from Hosewarehouse.com they were 68 and change for the 2 hoses and 4 spring clamps including shipping --local parts store was 60 and change each without clamps

Re: CAC Air Pipe Connector

Reply #18 – January 28, 2019, 11:33:06 pm

www.intakehoses.com

Re: CAC Air Pipe Connector

Reply #19 – January 29, 2019, 05:53:40 am

What size connectors do your coaches use,?
If they are 4" Any Freightliner dealer will stock them as Detroit diesel uses that size.

Re: CAC Air Pipe Connector

Reply #20 – February 08, 2019, 06:59:08 pm

I ended up getting the hose from the place David recommended - Intake Hoses. It was about $35 versus $80 and up elsewhere. It turns out this size (3.5") is not common. All the hose from the turbo and through the CAC is 4" but the air pipe is reduced to 3.5" to match the intake manifold. The stock piece was 7.5" long but I could not find that size so I got an 8" which is fine. Good to go.
jor (using joodyo's account by mistake)

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