Removing exhaust hose

[Mikenda]

I am just about to replace the exhaust on my Volvo 2020. Has anyone experience of removing the exhaust hose from the original stainless steel pipe ends? Knowing how difficult it can be replacing 1-1/2” heads hose I fear this will not be an easy task.

 

[Bodach na mara]

Exhaust hose is (or should be) a different beast from toilet waste hose. It is usually of a rubber material and while it may bind on to fittings, I have not had much trouble in releasing it from either stainless steel fittings, tubing or cast iron exhaust elbows.

 

[Tranona]

Sometimes a struggle in a confined space because some older types with heavy wire reinforcing are not very flexible. Presumably you are replacing the Volvo water trap silencer if you are talking about stainless ends. Should be relatively easy as there are usually longish runs of hose either end so you can manipulate it easily.

 

[MM5AHO]

I had occasion to replace a short piece recently, between exhaust elbow and vetus water trap. Length about 300mm. At the exhaust elbow end it was solidly attached and had to be cut off. Partly due to corrosion on the elbow (cast iron) and partly paint breakdown. The water trap end cam off easily by comparison.

For the replacement hose I fitted, I smeared a little engine oil on the inside of the hose so that it slipped onto the elbow and trap easily, and the clamps set it firmly in place. The sizing was comfortable that I didn't have to much trouble to fit, and though it was a confined space, the oil just made it that much easier.

 

[LadyInBed]

When I replaced a blown exhaust hose it was a bugger to get the hose off the aluminium elbow, a hacksaw job.
The hose was about 3 mtrs and very expensive so I put a ss connector in the hose a meter from the elbow so I would only have to replace 1 mtr of hose rather than 3.

 

[LittleSister]

Having failed in my attempts to pull off the exhaust hose between the engine and the water trap, my next plan is to try cutting through a few of the rings of the wire reinforcement either end of the hose using a Dremel type tool with cutting disc. (The working space and angle of attack available would make hacksawing very difficult.)

I've not yet attempted it so can't claim it works, but it might be an idea for someone else who's similarly 'stuck'.

 

[Scotty_Tradewind]

could you get a Fein type tool / oscillating cutter in there?

https://www.google.co.uk/search?sit....0....0...1c.1.64.hp..2.18.1067.0.28IAvkhO3XI

S.

 

[MM5AHO]

Another option is to und whatever the hose is attached to, at each end, and remove an assembly of say exhaust elbow - hose - watertrap inlet.
These parts might be more easily removable?

 

[savageseadog]

Make a hose removal tool from an old flat blade screwdriver. Simply heat the tip up with a blowlamp and bend it back in a right angle or a U (or make two).

 

[Ruffles]

I am just about to replace the exhaust on my Volvo 2020. Has anyone experience of removing the exhaust hose from the original stainless steel pipe ends? Knowing how difficult it can be replacing 1-1/2” heads hose I fear this will not be an easy task.

I always pull the hose off the manifold for winterising. And it can be a real sod. Lots of vigorous waggling and skinned knuckles.
Mind the end of the reinforcing wire as it can stick out and get you. Actually, if you're fitting new hose, cut the reinforcing wire with side cutters so that it doesn't stick out.

 

[Bav32]

I remove mine every couple of years (same engine) to check the exhaust elbow. try unbolting to exhaust elbow from the engine and pull back to clear the studs and twist the whole lot off the water trap.
Works for me. Refit is reverse, but take advantage of the natural bend in the coiled pipe.
Like lots of jobs it depends on access etc

 

[Sailfree]

Mine is 10yrs old now. I assume you replace it only once it gives problems?

Mind you I will need to remove mine soon to inspect the exhaust elbow now that I received the spare from USA.

I also intend to fit an exhaust temperature alarm.

 

[alahol2]

Rather than pulling the exhaust hose off the fitting I found it more effective to 'push' it off. I used various bits of wood and a hammer to work around the perimeter. Took a while but it worked.

 

[Mrnotming]

Has anybody uprooted the stainless steel silencer box to see if there is muck in there?

 

[LittleSister]

Another option is to und whatever the hose is attached to, at each end, and remove an assembly of say exhaust elbow - hose - watertrap inlet.
These parts might be more easily removable?

Mmmm. Cunning!

In fact so, cunning it almost counts as cheating! I think I'll give it try. (Will also mean I can check the elbow at the same time.)

 

[Malish]

Long thin screwdriver slid between hose and fitting then worked round to ease, in the gap created by the screwdriver add some plusgas or WD40 to act as a lubricant. then apply lots of jiggling and wiggling to remove hose.