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#4572156 - 11/12/17 07:03 PM Subaru Crank Bolt
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Getting ready to do first timing belt on 2007 Outback 2.5 basic, non turbo @ 91k miles. Dealer replaced leaking head gaskets (under warranty) so I can't assume crank bolt is torqued to factory specs. I am expecting it may be a bear to remove as I do not have enough room between a/c condenser and pulley for my impact. Several folks on various Subaru forums say to insert a stout screw driver or socket extension in the flex plate inspection port to lock engine. I have heard about folks doing this on other engines too. My question/concern is overstressing or breaking the flex plate. What is the inspection port for? Is it there to allow someone to lock the engine? Can flex plate take the stress of removing a stubborn crank bolt?

Also, seems to be a lot of confusion about crank bolt torque. Some say 94, some say 130, some say oil threads, some say dry. Unfortunately, I do not have a FSM. Some of the confusion might be 2.2 vs 2.5 and/or SOHC vs DOHC. Anyone know for sure how to properly torque this crank bolt?

Thanks.

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#4572162 - 11/12/17 07:08 PM Re: Subaru Crank Bolt [Re: artbuc]
kschachn Offline


Registered: 12/26/05
Posts: 9380
Loc: Upper Midwest
Please don't take this as a snarky post, but I never, ever perform major maintenance on a car without the factory service manual, or a good substitute (Haynes or Alldata). There's just too much I can screw up and the questions you are asking would be answered with proper documentation. I would not trust anything else. You say you do not have anything but I would get it.
_________________________
1994 BMW 530i, 227K
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#4572181 - 11/12/17 07:23 PM Re: Subaru Crank Bolt [Re: artbuc]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Assenmacher SU7250 Crank Pulley Holder


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#4572192 - 11/12/17 07:29 PM Re: Subaru Crank Bolt [Re: artbuc]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
Use two breaker bars, one on the bolt and one on the pulley holder, and pull in opposite directions.

If the car is manual you can just shift into 5 and set the brake to keep the crank from turning.

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#4572213 - 11/12/17 07:51 PM Re: Subaru Crank Bolt [Re: artbuc]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA

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#4572257 - 11/12/17 08:29 PM Re: Subaru Crank Bolt [Re: artbuc]
SubLGT Offline


Registered: 01/31/06
Posts: 2646
Loc: Idaho
Originally Posted By: artbuc
Getting ready to do first timing belt on 2007 Outback 2.5 basic, non turbo @ 91k miles….Unfortunately, I do not have a FSM….


Download the manual:

https://techinfo.subaru.com/stis/#/login

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#4572311 - 11/12/17 10:26 PM Re: Subaru Crank Bolt [Re: artbuc]
14Accent Offline


Registered: 08/03/17
Posts: 390
Loc: MN
Easy peasy. Use a 22mm socket on a long breaker bar. Wedge the handle of the breaker bar on the ground, pointing towards the drivers side of the engine. Then, BRIEFLY engage the starter. You'll feel a slight jolt. Make sure and turn the key off immediately!

Works every time.
_________________________
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#4572358 - 11/13/17 03:36 AM Re: Subaru Crank Bolt [Re: artbuc]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Thanks for the responses but can anyone answer my question about the flex plate?

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#4572359 - 11/13/17 03:38 AM Re: Subaru Crank Bolt [Re: 14Accent]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Originally Posted By: 14Accent
Easy peasy. Use a 22mm socket on a long breaker bar. Wedge the handle of the breaker bar on the ground, pointing towards the drivers side of the engine. Then, BRIEFLY engage the starter. You'll feel a slight jolt. Make sure and turn the key off immediately!

Works every time.


Yes, have used this several times on my Toyota’s but am concerned to do this on my friend’s Subie cuz I have no confidence in how dealer reinstalled crank bolt when he did the head gasket job. Also, still need to hold crank pulley to torque.


Edited by artbuc (11/13/17 03:46 AM)

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#4572360 - 11/13/17 03:40 AM Re: Subaru Crank Bolt [Re: kschachn]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Originally Posted By: kschachn
Please don't take this as a snarky post, but I never, ever perform major maintenance on a car without the factory service manual, or a good substitute (Haynes or Alldata). There's just too much I can screw up and the questions you are asking would be answered with proper documentation. I would not trust anything else. You say you do not have anything but I would get it.


I agree. That is why I got the FSM before I did my wife’s MDX. However, after watching many excellent videos, this timing belt is not at all tricky...just want to confirm torque spec. Also, since Subaru makes service tools to hold the crank pulley, I am quite sure that is what the FSM would recommend. I believe the flex plate inspection port is there for one purpose, to inspect. However, if if can safely be used to lock engine, I would be willing to try it.


Edited by artbuc (11/13/17 03:42 AM)

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#4572361 - 11/13/17 03:44 AM Re: Subaru Crank Bolt [Re: Merkava_4]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Originally Posted By: Merkava_4


Have looked at that. Company23 also has a great video for this engine.

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#4572377 - 11/13/17 04:46 AM Re: Subaru Crank Bolt [Re: artbuc]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Just found this

https://www.gates.com/~/media/files/gates/automotive/resources/tech-tips-and-tsbs/subaru_loctite.pdf

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#4572473 - 11/13/17 07:55 AM Re: Subaru Crank Bolt [Re: 14Accent]
mk378 Offline


Registered: 09/27/15
Posts: 1414
Loc: USA
Originally Posted By: 14Accent
You'll feel a slight jolt. Make sure and turn the key off immediately!

You're serious?

I mean if you were to try what is described, you should at least disable the ignition system so there's not a chance the engine will start. Then there is the issue that the bolt can't be reinstalled and properly tightened this way.

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#4572480 - 11/13/17 08:06 AM Re: Subaru Crank Bolt [Re: artbuc]
Todari09 Offline


Registered: 01/19/16
Posts: 29
Loc: Bothell, WA
This is how I removed and reinstalled the crank bolt.
https://www.youtube.com/watch?v=JnkcnqF_S3c
Torque is 138.2 ft-lbs according to Service Manual page H4SO-42.

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#4572577 - 11/13/17 09:37 AM Re: Subaru Crank Bolt [Re: Todari09]
artbuc Offline


Registered: 12/02/05
Posts: 1154
Loc: West Chester, PA
Originally Posted By: Todari09
This is how I removed and reinstalled the crank bolt.
https://www.youtube.com/watch?v=JnkcnqF_S3c
Torque is 138.2 ft-lbs according to Service Manual page H4SO-42.


Yikes! Is your alternator bearing screaming yet? I saw that video and quickly concluded that is not for me. I think you mean 132.8.


Edited by artbuc (11/13/17 09:41 AM)

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