98 s70. What is this coolant hose clamp and how do I remove it

[coop]

Going to replace the coolant expansion tank and hoses but confused at what type of clamp I’m looking at here and how to remove it

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[scot850]

I have never seen that style of clamp before, and definitely never on a Volvo. However, it looks like it may work the same way as most pipe clamps. The part facing downwards looks like a hex head. Try turning it with maybe a 7mm socket.

Neil.

[abscate]

Looks OEM and high quality. I would reuse that over junk from Lowes. I use oetiker clamps , dual, on those connections.

[coop]

It’s on both my old 97 850 and the 98 s70.
It’s the expansion tank hose that goes to the back of the engine.

[coop]

I need to get a better look at it but I could have sworn there was no nut. Which doesn’t make much sense with the rest of the clamp. But it looked like what you would turn is one piece. It might just be dirty and needs a little elbow grease.
But I’ve never seen this type of clamp elsewhere so it’s mystifying.

[MoVolvos]

I need to get a better look at it but I could have sworn there was no nut. Which doesn’t make much sense with the rest of the clamp. But it looked like what you would turn is one piece. It might just be dirty and needs a little elbow grease.
But I’ve never seen this type of clamp elsewhere so it’s mystifying.

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Looks like it take a regular socket. Just a fancy housing for the screw drive like any typical hose clamp.
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[volvolugnut]

Better than average clamp in the photo. It has grooves instead of slots. Slots can tear the hose.
volvolugnut

[coop]

I need to get a better look at it but I could have sworn there was no nut. Which doesn’t make much sense with the rest of the clamp. But it looked like what you would turn is one piece. It might just be dirty and needs a little elbow grease.
But I’ve never seen this type of clamp elsewhere so it’s mystifying.

.
Looks like it take a regular socket. Just a fancy housing for the screw drive like any typical hose clamp.
.
6 Point Socket.png
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I think you may be right. Just with the age it looks like It’s a bit worn with age but on the other car could see the screw drive at least. I gotta find my 7mm now lol

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[MoVolvos]

I need to get a better look at it but I could have sworn there was no nut. Which doesn’t make much sense with the rest of the clamp. But it looked like what you would turn is one piece. It might just be dirty and needs a little elbow grease.
But I’ve never seen this type of clamp elsewhere so it’s mystifying.

.
Looks like it take a regular socket. Just a fancy housing for the screw drive like any typical hose clamp.
.
6 Point Socket.png
.

I think you may be right. Just with the age it looks like It’s a bit worn with age but on the other car could see the screw drive at least. I gotta find my 7mm now lol

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That's an interesting one. Post a few nice photos like the current ones after removal so we can see how it functions.
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[coop]

So I guess it’s some sort of t post of fuel line type of no crimp hose clamp

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It’s nice the other end under the expansion tank is a more normal slotted type of hose clamp and then the smaller hose on the front of the tank has a T25 hose clamp on each end.