Torquing Rocker fulcrums and studs - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-22-2012, 07:19 AM
Glow Plugs Only
 

Join Date: Mar 2011
Location: Ontario, Canada
Posts: 1,439
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Question Torquing Rocker fulcrums and studs

In 303-01C-9 It says the following, CAUTION: Rotate the crankshaft until the damper locating dowel notch is in the 6 position or engine damage can occur.

Do I have to do this since I have not rotated the engine at all before I torque the Rocker fulcrum bolts and Head studs? If I do where can I view the dowel in question. Everything is back in and ready to torque.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-22-2012, 07:52 AM
Compression Ignition Addict
 

Join Date: Nov 2011
Location: Concord, NC
Posts: 1,035
Thanks: 0
Thanked 15 Times in 13 Posts
Feedback Score: 0 reviews
I believe that some have bent push rods before by not following that step. I'm sure others will chime in soon but I believe that you should.
Reply With Quote Quick reply to this message
  #3  
Old 03-22-2012, 09:21 AM
Glow Plugs Only
 

Join Date: Mar 2011
Location: Ontario, Canada
Posts: 1,439
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
On the front of what would be the harmonic balancer on a gas engine there is an orange dot. No notches that I can see. The orange dot is in the 9 oclock position right now. Is this what is being referred to? Is it also called a hormonic balancer on the 6.0? Can't seem to find it in the 6.0 bible, pictures of it but no description.

Last edited by dee004; 03-22-2012 at 09:33 AM.
Reply With Quote Quick reply to this message
  #4  
Old 03-22-2012, 10:09 AM
Premium Member
 

Join Date: Oct 2010
Posts: 1,863
Thanks: 0
Thanked 12 Times in 11 Posts
Feedback Score: 0 reviews
I have never really understood that procedure.

I have seen and done heads on 6.0L and never set the crankshaft in any real specific spot... Havent had any problems to date, so not sure how applicable that step is?
Reply With Quote Quick reply to this message
  #5  
Old 03-22-2012, 10:40 AM
Glow Plugs Only
 

Join Date: Mar 2011
Location: Ontario, Canada
Posts: 1,439
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by a2elvis View Post
I have never really understood that procedure.

I have seen and done heads on 6.0L and never set the crankshaft in any real specific spot... Havent had any problems to date, so not sure how applicable that step is?
If you just torqued them down slowly. Would the push rods not just do their thing and open the valves accordingly or am I missing the boat on this one?
Reply With Quote Quick reply to this message
  #6  
Old 03-22-2012, 10:52 AM
Compression Ignition Addict
 

Join Date: Jul 2009
Location: Jefferson, Ga
Posts: 673
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
The dowel hole is located between 2 of the harmonic balancer bolts. Use a mirror and look in between the bolts and you will see the dowel hole. I always set it to 6 oclock.
Reply With Quote Quick reply to this message
  #7  
Old 03-22-2012, 11:06 AM
Glow Plugs Only
 

Join Date: Mar 2011
Location: Ontario, Canada
Posts: 1,439
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by ajpu1983 View Post
The dowel hole is located between 2 of the harmonic balancer bolts. Use a mirror and look in between the bolts and you will see the dowel hole. I always set it to 6 oclock.
Beauty thanks. That would be dowel on the bottom correct? I have to turned the engine to 6 oclock and everything on the fulcrums loosened up from finger tight.

Last edited by dee004; 03-22-2012 at 11:12 AM.
Reply With Quote Quick reply to this message
  #8  
Old 03-22-2012, 05:27 PM
Powerstroke Techie

 

Join Date: Jun 2008
Location: Brampton, Ontario, Canada
Posts: 2,584
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
The main purpose of having the dowel on the crank in this position is to ensure that no pistons are at, or near TDC. This is so that you don't have any valves kissing pistons, just in case you have some sticky lifters that don't compress from being in the "relaxed" position, once you happen to torque down a rocker arm/pushtube assembly that happens to be in the partially open position.
Reply With Quote Quick reply to this message
  #9  
Old 03-22-2012, 05:50 PM
Glow Plugs Only
 

Join Date: Mar 2011
Location: Ontario, Canada
Posts: 1,439
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by m-chan68 View Post
The main purpose of having the dowel on the crank in this position is to ensure that no pistons are at, or near TDC. This is so that you don't have any valves kissing pistons, just in case you have some sticky lifters that don't compress from being in the "relaxed" position, once you happen to torque down a rocker arm/pushtube assembly that happens to be in the partially open position.
Thanks Mike. I did turn it to 6 oclock and torqued everything to specs. It's great to know why it's required. Cheers,
Reply With Quote Quick reply to this message
  #10  
Old 04-07-2012, 04:28 AM
Powerstroke.org Rookie
 

Join Date: Mar 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
How did you manage to rotate it with it back together not much room in there. I'm at that spot right now on mine, after tearing it back down to do the #5 cyl pushrod now have a bent one on #4 cyl.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel 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
Display Modes

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



All times are GMT -8. The time now is 05:35 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors