Volvo sterngland hot

whiteoaks7

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29 Nov 2002
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570
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South Wales, UK
My brand new Volvo sterngland runs at about 50c measured with an ir thermometer on the outside surface. Greased and burped as required. Is this normal? I didn't expect it to get hot at all. Previous gland was stuffing box.
 

RivalRedwing

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9 Nov 2004
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Rochester, UK, boat in SYH
sounds hot to me - do you mean the shaft or the rubber sterngland? Assuming you have sized it correctly then I wonder about alignment of the rubber 'cutless' bearing inside the sterngland with the shaft..
 

jakeroyd

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26 Jul 2004
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I have one which i have never checked with IR but i have felt it after a long spell of motoring.
It was warm. Difficult to say if it was 50c.
Just a shot in the dark , are you sure it's the correct size , ie. not a s5mm gland with a 1" (25.4) shaft ?
No excessive vibration or shaft missalingment ?

Otherwsie if it's working Ok and not leaking just keep an eye on it............
 

jakeroyd

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26 Jul 2004
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1,480
Are you sure it was burped properly , did you get all the air out and only spurts of water left ?
The seal has 2 lip seals and a comparatively long 'guide section'.
Can't see the seal lips generating too much heat but the guide section , maybe.

See this cross section

20150314_095627_zpsxr9f6pdc.jpg
 

Spyro

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18 Jan 2003
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Clyde
I don't have a Volvo seal but I would say 50c is hot to the touch. With all that cold water up to the lip seals on the inside I would think something is wrong if it's 50c on the outside.
 

bikesherpa

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5 Dec 2013
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18
Location
Italy
Hi,
I have a 30mm volvo seal on my sailboat and frequently check its temperature with an IR meter.
The temperature of the seal is typically 33-35C in summer when motor cruising at about 1200 shaft rpm (2500 engine rpm) for many hours with a near perfect shaft alignment.
Sometimes back I cruised with a gross misalignment in the shaft (about 0.6mm) and the seal temperature was hotter at about 42-45C. I also accidentally ran for about 15 minutes with air trapped in the seal and in that case the temperature went up to about 55C.
 
Last edited:

Heckler

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24 Feb 2003
Messages
15,820
My brand new Volvo sterngland runs at about 50c measured with an ir thermometer on the outside surface. Greased and burped as required. Is this normal? I didn't expect it to get hot at all. Previous gland was stuffing box.
Not normal. Mine runs just a touch warm and that after a few hours running! I changed it 18 months ago before coming to Portugal. Crossing Biscay, the first day and night we sailed then the wind changed to on the nose, I put the donk on. It was on for two days and nights. After the first 24 hrs there was a noise, I checked the seal,it was hot, like yours. i greased it and burped it, there was a lot of air in it! It then worked fine all the rest of the way to La Coruna. Going down the Spanish and Portugueses coast I did this a couple of times. Even though Bene have a water bleed pipe in it it seems to have an issue with needing burping if running for a long time. i checked the alignment of the engine whilst in the water. It is ok
S
 
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