Flexiable Hose Removal

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swifty

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Started to take off Raw Water Pump to-day, the inlet and outlet hoses are proving to be a pain to remove and will twist but do not give enough to to pass over raised flange. I wish to reuse hoses.

Any ideas would be most welcome.
 
Sometimes a screwdriver blade can be inserted under the hose and twisted to break the seal. Slowly work you way around the hose. Another alternative is a hot air gun, but hose is cheap and is usually better replaced.
 
Try heat, e.g. boiling water but if the hoses are so badly necked that they won't come off, you would be better off renewing them or cutting an inch or two off the end. Why? Because if they are now deformed and they probably won't seal unless you realy tighten them hard, which may break the hose clip or crush the hosetail they are on.
 
Having tried
1. Soap
2. heat from a gas lighter
3. Hot Water
4. Brute force
5. A borrowed heat gun

I can say that my top three preferred methods are: -
1. Heat gun
2. Heat gun
3. Heat gun

Its controllable and effective and it takes ALL the pain out of it.

I was so impressed I went and bought one myself!!

Do not delay....I have struggled for years and now feel downright stupid that I did. If you own a boat with hoses on board you NEED a heatgun.

Put it on Santa's list now. /forums/images/graemlins/grin.gif
 
[ QUOTE ]
I find that a strap wrench - the type with a cam that tightens against the strap works really well as you can twist and pull at the same time!

[/ QUOTE ]Is this the nipple thread?
 
I take it that these hoses have the pre crimped ends as opposed to the clear re-enforced plastic pipe held on with jub clips,which is cheap to replace? What engine are you dealing with out of interest please?
 
Depending on what you want to do, you could try taking the elbow off with the pipe attached.
When I had to replace my exhaust elbow, I tried using a screwdriver to get the pipe off and only succeeded in putting the screwdriver through the hose /forums/images/graemlins/blush.gif I ended up cutting the end of the hose off.
I was then going to use a stainless inner sleeve and a foot of new hose to connect to the new elbow, but the new elbow was longer than the old one so the shorter hose fitted ok. The bonus was that the new elbow didn't have a flange on.
 
I've dealt with a number of engines from Volvo MD 2022 to Yanmar 3YM30's and in each case it's always best practice to replace the pipes from the sea cocks because when you do them up the fitting "cuts" into the pipe to form a watertight seal. Even after a couple of seasons use the pipe starts to harden which makes it difficult to get a nice solid watertight seal again.

It can be done and I bet a number of posters will tell you that they have successfully re-used pipes that are far older, but IMHO for the cost of a couple of metres of pipe it's good practice to replace them.

Peter.
 
PBO Dick Everitt recommends moving the jubilee clip to the part of the pipe before the flange and then tighten the clip. I guess this pulls the end of the pipe over the flange somehow.
 
I removed the hoses to-day with the use of a heat gun. I gently heated the hoses until they were more pliable and they came off with ease. So Silver-Fox is totally correct heat is the answer.

I totally agree with the logic of replacing the hoses, but these are in excellent condition and are from a Volvo Penta TAMD31B. The replacement costs for both hoses because of their intricate shapes is £120.

Thank you all for your replies and suggestions.
 
[ QUOTE ]
The replacement costs for both hoses because of their intricate shapes is £120.

Thank you all for your replies and suggestions.

[/ QUOTE ]

That sounds like one hell of a lot to pay for a hose. Do they really need to be of an intricate shape? Can you not re-route them using plain hose?
 
Glad to be of service Swifty /forums/images/graemlins/grin.gif

The even better news is that a heat gun not only assists with refitting the hose, it also helps the hose mould well to the fitting and give a good seal.

I agree with the comments about replacing old hose when it hardens, but not to the extent that I would replace hose every time I had to remove it for routine maintenance.

IMHO this is not necessary .... and this sailor can't afford it anyway /forums/images/graemlins/frown.gif Too many other defined projects that need money throwing at them!!
 
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