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Old 17-09-2014, 19:59   #1
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Engine Hose Connections

Is it recommended to use any bonding material when attaching the engine water hoses to the engine/heat exchanger, etc? Or just the hose clamps will suffice?
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Old 17-09-2014, 20:07   #2
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Re: Engine Hose Connections

Just hose clamps. I prefer the awab style and be sure you are properly deciding between single or double clamped.


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Old 17-09-2014, 21:11   #3
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Re: Engine Hose Connections

Use some sort of lube. Anything to keep the hose from sticking. I like silicone grease. It's a fallacy to think that something like silicone will cause the hose to slip off under pressure. Hoses that are stuck on suck when repair time comes.
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Old 17-09-2014, 22:56   #4
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Re: Engine Hose Connections

Best practice is to install, dry, wherever possible. When absolutely necessary, a small amount of dish washing liquid. Clamping heavy duty hose requires Awab-style non-pierced in small sizes, and T-bolt for larger exhaust hoses. Double clamp all critical connections.


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Old 20-09-2014, 13:16   #5
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Re: Engine Hose Connections

Reason you don't want to use any kind of grease is possible is that grease will deteriorate most kinds of rubber, making removal especially difficult.
Just me, but I usually cut hoses off with a razor knife, keeps me from busting what they are connected to.
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Old 20-09-2014, 14:04   #6
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Re: Engine Hose Connections

When I rebuilt my Volvo, which had a compressor and turbo, so pipes going every where and some not in the most ex


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Old 20-09-2014, 14:16   #7
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Re: Engine Hose Connections

Sorry ... Dame ipad !

Accessible areas, I had to lube some to get them on. Used a high grade silicon liquid that is used for dry suit zips. It did make some a bit prone to slipping off until the jubilee clips were tight, all doubled up. I also used it to bring the rubber oxidised appearance 'back to new look' after checking for any crazing. After a couple of seasons they still looked like new and it seemed to condition the rubber. Never had any leaks , I will be doing the same again on any rebuild. But that's just me


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Old 20-09-2014, 17:01   #8
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Re: Engine Hose Connections

I prefer to use a small amount of silicone grease (Dow Corning 4) just on the threads of the hose clamp and nothing between the clamp and the hose.

No saying it's best practice, just what I got used to doing.

Not that the above grease ever really gets onto the hose but if it does, I've found DC4 is perfectly safe of all hoses I've encountered.
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Old 20-09-2014, 17:10   #9
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Re: Engine Hose Connections

my diesel mechanic uses dish soap to lube hioses
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Old 20-09-2014, 17:39   #10
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Re: Engine Hose Connections

Leave the hose a couple of inches too long when installing new,then you can cut down and reuse if needed.
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Old 20-09-2014, 18:48   #11
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Re: Engine Hose Connections

Spraying the clamp with a good anticorrosion product will extend their life.

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Old 20-09-2014, 19:02   #12
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Re: Engine Hose Connections

K-Y, all kidding aside. Originally formulated as a surgical lube. Many hoses are EPDM, which is quite intolerance of oil and grease. Glycerine is also a good Choice. Dish washing liquid is 3rd, too thin to be as effective.
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Old 20-09-2014, 20:32   #13
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Re: Engine Hose Connections

Silicone spray or K-Y is all I ever use on hoses. After working in machine shops and repairing heavy hydraulic equipment for 45 years, I found those two are the best all around hose starters. Soaps, you never know what kind of acids/alkali are in them.

BTW a surveyor will tell you "double hose clamp every exhaust joint".
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Old 21-09-2014, 07:37   #14
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Re: Engine Hose Connections

Thank you all for your the good responses. The hoses are all in good shape. I had to remove most of them to service (clean, etc) my heat exchanger, and it was a bi#*&# to remove them, but because they were almost new I had to make an effort to save them.
Now I want to make it easier for the next time, so K-Y it is.
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Old 21-09-2014, 07:53   #15
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Re: Engine Hose Connections

Quote:
Originally Posted by SVTatia View Post
Thank you all for your the good responses. The hoses are all in good shape. I had to remove most of them to service (clean, etc) my heat exchanger, and it was a bi#*&# to remove them, but because they were almost new I had to make an effort to save them.
Now I want to make it easier for the next time, so K-Y it is.
Putting her back together Marcello ??
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