Leaking coolant where heater pipe meets water pump

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Spepper24
Posts: 22
Joined: 25 Jul 2016 08:46 am

Leaking coolant where heater pipe meets water pump

Post by Spepper24 » 10 Nov 2016 07:21 pm

Hey guys,

I've sprung a leak. It's coming from a joint where the heater return meets the water pump. The pipe is steel and I can't tell whether it's a threaded connection or a solder or possibly push in and o-ring seal?? Any ideas? Stop leak has stopped it leaking on idle and low revs but still leaks at higher rpm. Anybody pulled one off before and know what connection it is? It's my daily so would like to know so I can be prepared. The water pump gasket looks ok it is definitely coming from the steel pipe in the photo
Attachments
IMG_6152.JPG
1989 Volvo 360 GLT

benji1985
Posts: 503
Joined: 30 Oct 2015 06:58 pm
Location: Helston

Re: Leaking coolant where heater pipe meets water pump

Post by benji1985 » 10 Nov 2016 07:49 pm

hey, cant see what you mean, can you point to it on the picture

Ben

Ride_on
Posts: 2262
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Leaking coolant where heater pipe meets water pump

Post by Ride_on » 10 Nov 2016 08:25 pm

Its a push-in, oval or square section O-ring. The pipe might be rusted.

It bolts to the block down below somewhere on a welded flap thing, undo that, maybe remove from the heater pipe at the back and it should pull out.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

Spepper24
Posts: 22
Joined: 25 Jul 2016 08:46 am

Re: Leaking coolant where heater pipe meets water pump

Post by Spepper24 » 10 Nov 2016 09:49 pm

Thanks RideOn, I suspected that. Will give it a go, cheers
1989 Volvo 360 GLT

Spepper24
Posts: 22
Joined: 25 Jul 2016 08:46 am

Re: Leaking coolant where heater pipe meets water pump

Post by Spepper24 » 11 Nov 2016 01:15 am

Got it out, making repairs will post updates. Like Ride_on said push fit with oring. Pipe section oring sits on has worn away
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IMG_6159.JPG (146.29 KiB) Viewed 8086 times
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IMG_6160.JPG (153.53 KiB) Viewed 8086 times
1989 Volvo 360 GLT

Spepper24
Posts: 22
Joined: 25 Jul 2016 08:46 am

Re: Leaking coolant where heater pipe meets water pump

Post by Spepper24 » 11 Nov 2016 05:51 am

All fixed. Machines a new end peice and welded it to the existing pipe. O-rings were ok, could have replaced but didn't have any that section, seals fine, mission to get on again behind the exhaust manifold but managed.
Attachments
IMG_6166.JPG
IMG_6164.JPG
IMG_6165.JPG
1989 Volvo 360 GLT

benji1985
Posts: 503
Joined: 30 Oct 2015 06:58 pm
Location: Helston

Re: Leaking coolant where heater pipe meets water pump

Post by benji1985 » 11 Nov 2016 09:10 am

well done and very nice. :D

Ben

Ride_on
Posts: 2262
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Leaking coolant where heater pipe meets water pump

Post by Ride_on » 11 Nov 2016 08:24 pm

Nice job
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

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