Cassette question (1 Viewer)

[Nonna]

The large circular hatch on my cassette has decided to become immovable so I can't twist it off to get inside to thoroughly clean it

I don't want to force it & break the thing
What would be the best product (spray?) to ease it.
I'm a bit loathe to use WD40 or Vaseline as they can sometimes do strange things to certain materials

What do you suggest?

 

[JockandRita]

Nonna, as the old saying goes, ie, a photo speaks a thousand words.

What make and model of cassette do you have, and exactly which part are you looking to remove, eg, the plate which holds the rubber seal, or some other part?

Cheers,

Jock.

 

[David and Sally]

Does this help



Use the slide as a lever

 

[Landy Andy]

Silicon spray if you feel you need lubricants.
If you make a lever from a piece of wood that fits between the two channels that will give you a bit of leverage to open it. With silicon spray on the o ring when refitting will make it easy next time.

 

[Lenny HB]

If it's tight that doesn't work you need a length of timber.
Once out grease the seal with silicone grease to make it easier to remove in future.

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[Nonna]

Nonna, as the old saying goes, ie, a photo speaks a thousand words.

What make and model of cassette do you have, and exactly which part are you looking to remove, eg, the plate which holds the rubber seal, or some other part?

Cheers,

Jock.

Sorry
I realised too late that I should have said it's a Thetford
It's the plate which when removed leaves a, say, 6in opening

 

[Nonna]

Does this help



Use the slide as a lever

Thank you. I know that's what Thetford suggest. I tried it but it's stuck so fast I may well break the slide if I force it

 

[Nonna]

Silicon spray if you feel you need lubricants.
If you make a lever from a piece of wood that fits between the two channels that will give you a bit of leverage to open it. With silicon spray on the o ring when refitting will make it easy next time.

Thanks
I'll try to hunt down some suitable wood & some silicon spray

 

[JockandRita]

Silicon spray if you feel you need lubricants.
If you make a lever from a piece of wood that fits between the two channels that will give you a bit of leverage to open it. With silicon spray on the o ring when refitting will make it easy next time.

If it's tight that doesn't work you need a length of timber.
Once out grease the seal with silicone grease to make it easier to remove in future.

But we still haven't established what make and model of cassette yet. Never in my days of caravans and MHs, have I needed to apply a piece of timber to gain access to clean a cassette.

Which make and model are you both referring to?

Edited..... Just seen Nonna's reference to David"s video link, and all becomes clear.

Cheers,

Jock.

 

[Nonna]

If it's tight that doesn't work you need a length of timber.
Once out grease the seal with silicone grease to make it easier to remove in future.

Thanks. Grease as opposed to spray?

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[JockandRita]

Thanks. Grease as opposed to spray?

I use silicone spray for a multitude of jobs on the MH, and carry it all the time rather than silicone grease. It is much more versatile.

Jock.

 

[Landy Andy]

Spray or grease is ok once open, but spray around the joint before opening may help. Grease won’t until apart.

 

[Howard H]

Some times as I found out it just will not budge and even using spray and making a piece of wood to fit the runners . I had to butcher the whole ring to get it out but you can buy the whole round assembly including new seal for about £45.

 

[Lenny HB]

Thanks. Grease as opposed to spray?

yeas grease is far better.

 

[donkey]

Plastic responds well to heat, so try some boiling water dribbled round the seal, it should then turn .

Geoff

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[ChrisL]

On no account use Vaseline or any other petroleum based products, Thetford make a silicone spray specifically for use on the seals it's £7.00 on Amazon.

 

[JockandRita]

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Been using the stuff successfully for years, on toilet seals, awning assemblies, hydraulic levellers, electric steps, door hinges, locks, and latches, etc, etc.

There is nothing special about the Thetford product, just like their internal cleaning fluids, ie, I've had better results with a good soak using a citric acid solution to clean/descale the internals of the cassette, with no damage to the working parts, or seals.

Cheers,

Jock.

 

[Landy Andy]

Id fill the cassette with very hot water to get things to soften and expand. Before trying.

 

[David and Sally]

Just tried to open ours. Less than a year old. Wouldn’t budge even with a wooden lever.
As I don’t need to do anything I didn’t go any further and end up breaking something.