IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy anything with this and it helps MVS!

Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

cn90
Posts: 6724
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Has thanked: 0
Been thanked: 133 times
United States of America
cn90

Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by cn90 » Sun Jun 14, 2020 1:31 pm

Hi guys,

Since the 2.5T engine is common to S60, S80, and XC90, I am posting it here bc this forum has more traffic than XC90.

My 2005 XC90 2.5T with 120K develops an oil leak at the right subframe area, very classic for cam seal leak.

My plan is to replace both cam seals (I have the cam lock tool), and both rear plastic plugs.

My question is about the crank seal (oil pump seal): I rarely see this leak before 200K.
So I can leave this crank seal alone bc I hate removing the crank pulley and oil pump if I don't have too!
Please advise...
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

firstv70volvo
Posts: 90
Joined: Sat Mar 06, 2010 8:37 am
Year and Model: V70 T5 2001
Location: Sacramento, CA
Has thanked: 10 times
Been thanked: 9 times
United States of America
firstv70volvo

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by firstv70volvo » Sun Jun 14, 2020 6:45 pm

Just my two cents worth. Not long ago I replaced the front crankshaft seal while replacing all the camshaft seals. At 20 years and 200K miles on my car the front crankshaft seal had no evidence of any leakage at all but I replaced anyway since I already had the pulley off. If you see no evidence of the front crankshaft seal leaking then I'd say leave it alone because it's not something that's going to fail all of a sudden and leave you stranded somewhere. That's my critera for preventive replacement of parts, if the part can fail and leave you stranded (radiator hose, serpentine belt...) or do severe damage (timing belt) then I replace the part but if I think the part will provide a warning before failing catastrophically then I tend to wait on the replacement, especially is there's a high cost in terms of dollars or time to replace the part. This assumes your PCV system is in good shape and won't blow out any of the seals, which would be a catastrophic type of failure.

User avatar
SuperHerman
Posts: 1496
Joined: Mon Dec 01, 2014 1:28 pm
Year and Model: 2004 & 2016 XC90
Location: Minnesota
Has thanked: 0
Been thanked: 158 times
United States of America
SuperHerman

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by SuperHerman » Sun Jun 14, 2020 8:50 pm

I would look at your PCV system - check it for positive pressure. You may replace the seals only to have another seal start to leak b/c many times the problem is the PCV systerm is restricted.

jonesg
Posts: 974
Joined: Wed Jan 16, 2008 3:25 pm
Year and Model: 2004 V70
Location: Northern maine.
Has thanked: 2 times
Been thanked: 24 times
Wales
jonesg

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by jonesg » Sun Jun 14, 2020 10:39 pm

I did both cam seals front and rear of cams but the crank seal was dry so I left it in place.
Still dry 3 years later....220k miles.

User avatar
- Pete -
Posts: 671
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
Has thanked: 56 times
Been thanked: 90 times
United States of America
- Pete -

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by - Pete - » Mon Jun 15, 2020 9:38 pm

The problem is you really don’t know for certain unless you pull that timing gear off the nose of the crank. I guess I don’t see an issue with a 10 minute crank timing gear/pulley removal. Once the serp pulley is off it just takes a puller & the timing gear is off as well. Then you can verify that the crank seal is good or bad. On my last one, a 2001 V70XC 2.4T, I got lucky & didn’t need to replace the crank seal (et.al) after removing the timing gear.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold

jonesg
Posts: 974
Joined: Wed Jan 16, 2008 3:25 pm
Year and Model: 2004 V70
Location: Northern maine.
Has thanked: 2 times
Been thanked: 24 times
Wales
jonesg

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by jonesg » Tue Jun 16, 2020 9:37 am

its a matter of tools, Getting stuff loose isn't the same as having a puller on hand and a counterhold to tighten up the center nut again.
Unless you have a trick method for torquing the crank nut again?
Thats where I am now, debating whether to splash $50 on the pulley holder or pound it with the ugga dugga.
I wouldn't go in there unless I had the tools to get out again, on mine the center nut went missing, volvo says that nut is single use,
I can attest to that.

User avatar
- Pete -
Posts: 671
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
Has thanked: 56 times
Been thanked: 90 times
United States of America
- Pete -

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by - Pete - » Tue Jun 16, 2020 11:12 am

Impact on & off is the way to go. I’ve reused the crank nut on my 288k XC70 many times. I marked it long ago with a white paint marker & also the face of the serp pulley so I know how far to impact it back on. I’ve never used a crank counterhold & have had a dozen or more P2 timings to show for it.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold

jonesg
Posts: 974
Joined: Wed Jan 16, 2008 3:25 pm
Year and Model: 2004 V70
Location: Northern maine.
Has thanked: 2 times
Been thanked: 24 times
Wales
jonesg

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by jonesg » Tue Jun 16, 2020 1:02 pm

- Pete - wrote:
Tue Jun 16, 2020 11:12 am
Impact on & off is the way to go. I’ve reused the crank nut on my 288k XC70 many times. I marked it long ago with a white paint marker & also the face of the serp pulley so I know how far to impact it back on. I’ve never used a crank counterhold & have had a dozen or more P2 timings to show for it.
Thanks, thats the way I am leaning too, I've never had a fastener work loose when hammered home.
did that on my old 740 and it was never a problem.
I don't know the previous history of my current V70, so who knows what someone did prior.

cn90
Posts: 6724
Joined: Wed Mar 31, 2010 9:54 am
Year and Model: 2004 V70 2.5T
Location: Omaha NE
Has thanked: 0
Been thanked: 133 times
United States of America
cn90

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by cn90 » Tue Jun 16, 2020 6:14 pm

I am buying parts for the job, so RELATED question:

- Looking at my 2005 XC90 2.5T (dual VVT setup), there are 2 cam sensors. Each sensor is housing is held by 2 Torx bolts.

- So, the question is: for the REAR side, any seal, plastic plug to buy? Is it just simply remove the cam sensor housing, install locking tool, do the job and re-install the cam sensor housing?

PS: I don't see any REAR plastic plug in my car....
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

User avatar
- Pete -
Posts: 671
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
Has thanked: 56 times
Been thanked: 90 times
United States of America
- Pete -

Re: Cam Seals leaking at 120K, leave Oil Pump Seal alone?

Post by - Pete - » Tue Jun 16, 2020 7:22 pm

Dual VVT engines do not have the large plastic plug on the rear of the cams. They do have seals, however. I have a thread with the part numbers and comparison notes of seals available.

Remove the cam sensor (black plastic housings), then remove 10mm bolt which secures hall effect sensor pickup. You can’t mess these up, they only fit on in one orientation. Then you can replace the rear can seals or lock the cams & do the front seals first, makes no difference in ease. I like to tap a hole in the old seal with a sharp pick, then screw a drywall screw into the hole & pull the old seal out. Install for rears is easy, just push them in until they stop.
2001 V70XC 146k
2004 V70 AWD 141k
2004 V70R M66 144k
2004 XC70 287k
2006 XC70 155k Sold

Post Reply
  • Similar Topics
    Replies
    Views
    Last post