front crank seal leak...help - Subaru Forester Owners Forum
User Tag List

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 29 (permalink) Old 05-05-2009, 04:32 AM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
front crank seal leak...help

Had cam seals, front crank seal and rocker gaskets (both sides) replaced last week with a new belt, tensioner and cogs. All was looking well except that the front crank was leaking worse after being replaced. Mechanic said that they put some silicon seal around the seal as it didn't seem a very good fit, but still leaked. So i bought a new front crank seal which was re fitted this a.m, and the problem is worse than ever.

All the mechanic can suggest is putting more high temp sealant around the seal to try and stop the oil seeping through, but this sounds very DIY to me and doesn't fill me with confidence.

I wasn't aware of any common issues with the re-fitting of the front crank seal and would be grateful for any comments, tips, views.

Thanks in advance

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto
shroud is offline  
Sponsored Links
Advertisement
 
post #2 of 29 (permalink) Old 05-05-2009, 05:03 AM
 
BAC5.2's Avatar
 
Join Date: May 2006
Location: Gaithersburg, MD
Posts: 10,482
Car Year: 2009
Car Model: Outback XT-B
Transmission: 5MT
Are you sure you are using the correct part?

09 SWP Outback 2.5XT 5MT 263whp, 337 lb-ft
BAC5.2 is offline  
post #3 of 29 (permalink) Old 05-05-2009, 05:20 AM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
sensible question, but have used two front crank seals now (the latest genuine subaru part), bought at different times and checked by supplying the chassis number, so as far as i can tell i can only assume yes. I am going to cross reference this again with the supplier.

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto
shroud is offline  
post #4 of 29 (permalink) Old 05-05-2009, 05:49 AM
Yorkshireman, not a DUDE!
 
Brian Lacey's Avatar
 
Join Date: Jan 2006
Location: Rutland UK
Posts: 2,965
Car Year: 2011
Car Model: Mitsi RA Sportback
Transmission: SST
Red face

Doesn't exactly help but the seal was replaced on the T/tb at the 90k service and no problem. Bought it on e-bay from a Bristol based outfit I seem to recall. Is the mechanic who does the work OK with Subaru, because if two have failed then it might be poor fitting rather than poor part. But if it is the correct bit according to Subaru then could there be another problem with the oil pressure being too great and forcing the seal out. A sympton of another problem perhaps related to the oil pump. I was reading something about this months back either on SF or SN where a seal was being forced out but can't remember the details now.
Good Luck

Brian

1998 T/tb Scrapped ! Ralliart Sportback & Almera.
Brian Lacey is offline  
post #5 of 29 (permalink) Old 05-05-2009, 06:07 AM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
Thanks Brian,

Chap seems to know his Subarus and his view is that the front crank is a really easy replacement on the Forester once the rad and belt is off, so it's not as though he's making out it is a really tricky job or anything. I'm kinda hoping that Jap import car parts have messed up (as both seals i have supplied came from them), but as you have said they are normally spot on, but have asked the question just in case.

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto
shroud is offline  
post #6 of 29 (permalink) Old 05-05-2009, 06:41 AM
Contributing Member
 
Nich B's Avatar
 
Join Date: Jan 2006
Location: Thaxted
Posts: 3,422
Car Year: 98
Car Model: JDM Stb
Transmission: Manual
Would suggest that either
1 Seal fitted incorrectly, are they not faced ie inside outside
2 wrong seal
3 dried out seal ( ie one thats been clubbed to death and left to dessicate )

Mapped by Simon JGM. I supplied the bits he provided the magic
Nich B is offline  
post #7 of 29 (permalink) Old 05-05-2009, 08:26 AM
Contributing Member
 
Nich B's Avatar
 
Join Date: Jan 2006
Location: Thaxted
Posts: 3,422
Car Year: 98
Car Model: JDM Stb
Transmission: Manual
Brian

Shroud was saying that he is having a crisis about Forester ownership and leaking seals

Mapped by Simon JGM. I supplied the bits he provided the magic
Nich B is offline  
post #8 of 29 (permalink) Old 05-05-2009, 08:58 AM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
Definitely the right part (cross referenced by importcarparts). Both seals i supplied were in good condition (new). I can't really comment on incorrect fitting, and can only assume that third time of asking the chap manages to get it to seal properly. Not sure about the inside out point. All the cam seals fit face in. Nich B - Are you saying the crank seal should sit face out ? Mechanic didn't think this was right at all. To avoid getting into trouble, could i also suggest replies are posted to the thread on this topic under 2.0 turbo engine. My post on this thread was more about dispair at the car at present and the desire for a simple car that just worked.

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto
shroud is offline  
post #9 of 29 (permalink) Old 05-05-2009, 01:00 PM
Contributing Member
 
Nich B's Avatar
 
Join Date: Jan 2006
Location: Thaxted
Posts: 3,422
Car Year: 98
Car Model: JDM Stb
Transmission: Manual
as much as it erks me I shall respond here as requested

Not you shroud

I suggested they might be faced because if you have fitted two and they are still leaking something must be wrong, or as suggested they are the wrong part, try one from Subaru

Mapped by Simon JGM. I supplied the bits he provided the magic
Nich B is offline  
post #10 of 29 (permalink) Old 05-05-2009, 01:11 PM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
Cheers. I've calmed down now a bit. I was close to trading the car in for my wifes 2006Zafira we've just bought as the garage are offering a 2000 part ex on any car, and the way i was feeling 2000 seemed like a decent offer.

The last seal was a genuine subaru part, which is also referenced in a couple of places on this forum. Hopefully the mechanic for some reason has just done a poor job (twice) of fitting it and has it overnight to try for a third time and intends to link the rad up with long hoses and run the engine hoping it will not leak, so we'll have to wait and see (and hope). Would a faulty oil pump cause this kind of issue or am i talking myself into spending more 60's unnecessarily?

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto
shroud is offline  
post #11 of 29 (permalink) Old 05-05-2009, 02:43 PM
Yorkshireman, not a DUDE!
 
Brian Lacey's Avatar
 
Join Date: Jan 2006
Location: Rutland UK
Posts: 2,965
Car Year: 2011
Car Model: Mitsi RA Sportback
Transmission: SST
Wink

This was the post I was referring to .....

Front crank shaft seal keeps coming out - ScoobyNet

Cheers

Brian

1998 T/tb Scrapped ! Ralliart Sportback & Almera.
Brian Lacey is offline  
post #12 of 29 (permalink) Old 05-05-2009, 03:48 PM
Super Moderator
 
flstffxe's Avatar
 
Join Date: Dec 2007
Location: Coon Rapids, MN
Posts: 7,723
Car Year: 2008
Car Model: Forester X Premium
Transmission: 5MT
Another thing to look at is if the old seal has worn a groove in the crank shaft. If it has and a new seal is put in and rides on top of this groove, it will leak.

Not many options to cure this, if this is the cause. A Speedy sleeve(sleeve that presses over the shaft and provides a fresh surface for the seal to ride on), common for diff repairs involving a leaky pinion seal. I do not know if there is one available for the crank seal however. The other one is to simply drive the new seal in farther or not as far so that it rides on a different spot on the crank.

I agree with not wanting to use a high temp rtv to bond the seal in place. If it does come down to this I have had really good results with Permetex Aviation Sealer. I have used it to retain seals in a couple of high pressure hydrolic units that were repeatedly pushed out(it was not designed for the pressure we needed to run).

His - 08 X Prem 5mt
Hers - 08 X 4EAT
flstffxe is offline  
post #13 of 29 (permalink) Old 05-05-2009, 09:36 PM
Simply the best
Contributing Member
 
The Rookie's Avatar
 
Join Date: Mar 2006
Location: Warwickshire, UK
Posts: 8,588
Car Year: 99
Car Model: UK S-turbo
They should face in, but maybe your mechanic is fiiting them face out! The scroll is designed tpo pump oil back into the engine away from the lip.

When fitting a new seal, if the crank is owrn, you shouldn't drive it the whole way in so it runs on an undamaged part of the crank, also its easy to 'nick' a seal on the nose of the cank, if so it will never leak.

Simon

98 s-turbo now breaking for spares :icon_cry:, now driving a BMW 320D M-sport :raspberry:
The Rookie is offline  
post #14 of 29 (permalink) Old 05-05-2009, 11:46 PM
Simply the best
Contributing Member
 
The Rookie's Avatar
 
Join Date: Mar 2006
Location: Warwickshire, UK
Posts: 8,588
Car Year: 99
Car Model: UK S-turbo
Answered on your other thread (naughty boy)...

Simon

98 s-turbo now breaking for spares :icon_cry:, now driving a BMW 320D M-sport :raspberry:
The Rookie is offline  
post #15 of 29 (permalink) Old 05-06-2009, 10:38 AM Thread Starter
Forum Member
 
shroud's Avatar
 
Join Date: Feb 2008
Location: Kent
Posts: 1,189
Car Year: 1999
Car Model: STB
Transmission: Automatic
Third seal bought and fitted and same issue, and this time the seating of the seal was counter checked by another mechanic.

Now can we post to the 2.0 turbo thread on this issue (many thanks in advance)

99 SF JDM JGM S/TB Auto
03 SG 2.0XT Auto

Last edited by shroud; 05-25-2009 at 02:22 AM.
shroud is offline  
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Engine and Exhaust > EJ20 - 2.0L Turbocharged

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Subaru Forester Owners Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome