Rear Camshaft Seal Replacement.

Post by **lewismug** » 22 Feb 2008, 08:54

I would have ordered from FCP, but I took the car apart before ordering the seal, so time was of the essence. I ordered my seal from Advance Auto Parts. I'm not sure about the differences in the 95 and my 99. Several of the other guys have experience with those year model cars and could be of a lot more assistance than me. Maybe one of them will chime in shortly.

Post by **Ozark Lee** » 22 Feb 2008, 09:38

Do all 850s have one seal? It seems that there are distinctions between engines manufactured for the '95 model year.

On your '95 there are two, one behind the cam position sensor (exhaust side) and the other is behind the distributor (intake side). They don't necessarily both go bad together.

On your turbo model there are oil lines to and from the turbo in that general area as well.

...Lee

Post by **precopster** » 30 Oct 2010, 07:48

Great job on showing us we can do it and save.

Even 10 valve versions have two seals. One is behind the distributor and the other is behind the cam sensor. I should know, I have two of them!! The B5252S has "Volvo" only on the valve cover.

In my experience, on the 10 valve the seal that plays up the most is the one where the lean of the motor is; the front one, or inlet. The 10 valve rear cam seals are totally different from the 20 valve 5s or 24 valve 6s rear cam seals. They are cupped, like a bowl and very expensive at the dealer. Fortunately, you can land a head gasket set from an eBay UK seller with both front & rear seals made in Germany for the cost of both of them from the dealer.

Post by **cn90** » 20 Jan 2011, 12:03

I have a 1998 V70 NA.

Eeuroparts says that there are two (2) REAR Camshaft Seals.
I only see 1 removed here.
Does anyone know for sure 1 or 2 seals needed?

http://www.eeuroparts.com/Main/PartDeta ... id=9443310

Description: Rear camshaft seal for any 850 (2 per car), 98 S/V/C 70(2 per car), 960(2 per car), S/V 90(2 per car), S/V/C/70 99-03, S/V 40, S60, S80, XC 90. Also balance shaft seal for any b234 740/940 89-91. Volvo original Elring

Post by **jblackburn** » 20 Jan 2011, 12:33

It's a DOHC engine - there are 2 - one behind the distributor; one behind the cam sensor. Same for the other (front) side of the engine.

Post by **cn90** » 20 Jan 2011, 12:47

Thanks!

I was thinking about the Distributor ONLY!

Post by **jimmy57** » 20 Jan 2011, 13:31

One side uses the cap seal instead of cam seal on the ones with single CVVT. The same arrangement as used on 960/s90/v90.
You can use the seal on the cam and leave the end of cam exposed or I suppose use a cam seal and re-use the cap seal with silicone sealing the hole for removal on those.

MPLSJEFF · Post by **MPLSJEFF** » 27 Nov 2012, 20:47

This post saved my bacon! I thought it was the rear main. One evening and the cam seals were done. Nary a drop on the driveway now. Thank you, thank you, thank you!

Post by **songzunhuang** » 25 Jul 2015, 18:44

I'm doing the rear cam seal on my V70 now. Like you, I was freaking when the dealer told me that it was the rear main seal. After replacing this cam seal, I am hoping that all will be well. One thing that was different on my car (a 98 V70 T5) was that the exhaust cam was near the firewall on the driver side. All the tutorials said it was going to be easy to get to. Well, mine had a metal bracket in front of it with a bunch of vacuum lines that were being held in place by the bracket. It wasn't so easy to get to.

: Mess of lines in front of the lower bolt of the sensor!

In the end, I am waiting for the new seal to arrive after ordered it. I hope this is the root cause of my leak. We will see.

brunom · Post by **brunom** » 26 Feb 2017, 18:39

Regarding the one bolt in the center of the trigger wheel.
When I try to take it out it rotates the cams and brings them out of timing. Did you use any locking device in the cam pulleys or something?