Camshaft oil seal.

Steve940estate · Jul 16th, 2009, 16:06

I noticed I have a bit of a leak again. The bit of the head that connects to the water pump is oily. I changed this just after fitting the engine but only used a pattern oil seal. Has anyone else had problems with non Volvo ones ? 99% sure it's coming out here, I took took the bolts out of the cambelt cover and moved it and oil just below the camshaft.

I don't think there is pressure build up breather problem as it was all cleaned and seemed ok whan I last checked so I am hoping it's just a bad seal.

BlueBrickSte · Jul 16th, 2009, 20:55

Just a thought Steve but can the seal be pushed in any further than it already is? Not done mine yet but on replacing various seals on bikes there is usually a tiny groove worn by the seal which lets the oil past. Even if its just a mil or two further in should make a difference.

Steve940estate · Jul 16th, 2009, 23:00

Hi
Thats a good point. I didn't notice a groove but I might have been unlucky enought to put the seal back in the same place as the old one. I'm going to take it apart tomorrow if the weather lets me. I bought another Volvo seal in case I had problems after last time.

RollingThunder · Jul 17th, 2009, 10:53

When I had my B230FK cylinderhead overhauled a few years ago (new guides, seats etc) it came back with an unbranded camshaft oil seal... Unfortunately, I had to refit the seal 2 weeks later as it had developed a leak. After fitting a Volvo one it was perfect - so I'd say Volvo OEM is best in this case.

TonyS9 · Jul 17th, 2009, 17:44

Mine is always oily dispite a new seal, havn't gone to the full trouble of removing the pulley + plastic to change the seal to a Volvo one (have use pattern mostly from seal kit). I didn't seal the cam bearing cap though and have only noticed that this should be done (its not in my 360 manual where I learnt most of it).

Will hopefully recheck it soon.

Steve940estate · Jul 17th, 2009, 19:13

Numpty alert !

I took it all apart this morning and noticed straight away that the seal wasn't fitted very straight. When I changed it last time it was dark and cold and I couldn't see what I was doing very well. Pretty sure that this is the cause of the leak. I have probably done about 2,000 miles since fitting it so it hasn't done bad really !

Looking at the front of the head it isn't flat across the hole where the seal fits, there is a small step. If you line the seal up with the chamfer on the hole it looks right but isn't. I couldn't find anything very good to push the new seal in and ended up using a big socket and a bolt into the puley bolt hole to fit it. It looks ok now, just need to put it back together and check the cam belt, rain halted play earlier.

BlueBrickSte · Jul 17th, 2009, 19:27

I think we've all been there at some point in time Steve. Like the time I attached the battery leads back to front on my BMW R60/6 and went to do something else. Expensive!

Jul 16th, 2009, 16:06	#1
Steve940estate Steam Driven PC Owner. Last Online: Jun 11th, 2024 15:05 Join Date: Dec 2004 Location: Not sure.	Camshaft oil seal. I noticed I have a bit of a leak again. The bit of the head that connects to the water pump is oily. I changed this just after fitting the engine but only used a pattern oil seal. Has anyone else had problems with non Volvo ones ? 99% sure it's coming out here, I took took the bolts out of the cambelt cover and moved it and oil just below the camshaft. I don't think there is pressure build up breather problem as it was all cleaned and seemed ok whan I last checked so I am hoping it's just a bad seal.

Jul 17th, 2009, 10:53	#4
RollingThunder Grumpy Old Git Last Online: Jun 14th, 2024 15:52 Join Date: Dec 2004 Location: South Yorkshire View Photos By: RollingThunder	When I had my B230FK cylinderhead overhauled a few years ago (new guides, seats etc) it came back with an unbranded camshaft oil seal... Unfortunately, I had to refit the seal 2 weeks later as it had developed a leak. After fitting a Volvo one it was perfect - so I'd say Volvo OEM is best in this case. __________________ S40 2.4i '07 Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071

Jul 16th, 2009, 20:55	#2
BlueBrickSte Premier Member Last Online: May 8th, 2016 20:48 Join Date: Mar 2009 Location: near Wigan View Photos By: BlueBrickSte	Just a thought Steve but can the seal be pushed in any further than it already is? Not done mine yet but on replacing various seals on bikes there is usually a tiny groove worn by the seal which lets the oil past. Even if its just a mil or two further in should make a difference.

Jul 16th, 2009, 23:00	#3
Steve940estate Steam Driven PC Owner. Last Online: Jun 11th, 2024 15:05 Join Date: Dec 2004 Location: Not sure.	Hi Thats a good point. I didn't notice a groove but I might have been unlucky enought to put the seal back in the same place as the old one. I'm going to take it apart tomorrow if the weather lets me. I bought another Volvo seal in case I had problems after last time.

Jul 17th, 2009, 17:44	#5
TonyS9 Premier Member Last Online: Yesterday 19:56 Join Date: Jul 2009 Location: Holywood	Mine is always oily dispite a new seal, havn't gone to the full trouble of removing the pulley + plastic to change the seal to a Volvo one (have use pattern mostly from seal kit). I didn't seal the cam bearing cap though and have only noticed that this should be done (its not in my 360 manual where I learnt most of it). Will hopefully recheck it soon.

Jul 17th, 2009, 19:13	#6
Steve940estate Steam Driven PC Owner. Last Online: Jun 11th, 2024 15:05 Join Date: Dec 2004 Location: Not sure.	Numpty alert ! I took it all apart this morning and noticed straight away that the seal wasn't fitted very straight. When I changed it last time it was dark and cold and I couldn't see what I was doing very well. Pretty sure that this is the cause of the leak. I have probably done about 2,000 miles since fitting it so it hasn't done bad really ! Looking at the front of the head it isn't flat across the hole where the seal fits, there is a small step. If you line the seal up with the chamfer on the hole it looks right but isn't. I couldn't find anything very good to push the new seal in and ended up using a big socket and a bolt into the puley bolt hole to fit it. It looks ok now, just need to put it back together and check the cam belt, rain halted play earlier.

Jul 17th, 2009, 19:27	#7
BlueBrickSte Premier Member Last Online: May 8th, 2016 20:48 Join Date: Mar 2009 Location: near Wigan View Photos By: BlueBrickSte	I think we've all been there at some point in time Steve. Like the time I attached the battery leads back to front on my BMW R60/6 and went to do something else. Expensive!

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